Attached please find a copy of the latest CAMASE newsletter. I am sorry for
those who might have already received this copy directly, but the newsletter
gives a good overview of current activities in the crop modeling area.
Thanks,
Gerrit
>Return-Path: <[log in to unmask]>
>Received: from hearnnt.nic.surfnet.nl by bae.griffin.peachnet.edu
(SMI-8.6/SMI-SVR4)
> id DAA04314; Wed, 7 May 1997 03:29:05 -0400
>Received: from hearnnt (192.87.5.133) by hearnnt.nic.surfnet.nl (LSMTP for
Windows NT v1.1a) with SMTP id <[log in to unmask]>; Wed, 7
May 1997 9:21:45 +0200
>Received: from NIC.SURFNET.NL by NIC.SURFNET.NL (LISTSERV release 1.8c) with
> NJE id 8075 for [log in to unmask]; Wed, 7 May 1997 09:24:56
> +0200
>Received: from HEARN (NJE origin SMTP@HEARN) by HEARN.NIC.SURFNET.NL (LMail
> V1.2c/1.8c) with BSMTP id 5939; Wed, 7 May 1997 09:24:54 +0200
>Received: from gatekeeper.agro.nl by HEARN.nic.SURFnet.nl (IBM VM SMTP V2R2)
> with TCP; Wed, 07 May 97 09:24:50 +0200
>Received: by gatekeeper.agro.nl id AA16865; Wed, 7 May 1997 09:24:49 +0200
>Received: from ABW1 (ABW1) by AGRO.NL (PMDF V5.0-7 #12026) id
> <[log in to unmask]> for [log in to unmask]; Wed, 07 May
> 1997 09:22:01 +0000 (MED)
>Received: from AB.DLO.NL by AB.DLO.NL (PMDF V4.3-7 #7552) id
> <[log in to unmask]>; Wed, 07 May 1997 09:19:28 +0000 (GMT)
>X-Vms-To: CAMASE-L
>X-Vms-Cc: PLENTING
>Mime-Version: 1.0
>Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
>Content-Transfer-Encoding: 7BIT
>Approved-By: "Ing. M.C. PLentinger, AB-DLO, The Netherlands."
> <[log in to unmask]>
>Message-ID: <[log in to unmask]>
>Date: Wed, 7 May 1997 09:19:27 +0000
>Reply-To: Quantitative Methods of Research on Agricultural Systems and the
> Environment <[log in to unmask]>
>Sender: Quantitative Methods of Research on Agricultural Systems and the
> Environment <[log in to unmask]>
>From: "Ing. M.C. PLentinger, AB-DLO, The Netherlands."
> <[log in to unmask]>
>Subject: CAMASE_NEWS No. 12, May 1997
>To: [log in to unmask]
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> N E W S L E T T E R
>
> O F
>
> A G R O - E C O S Y S T E M S
>
> M O D E L L I N G
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> Published by AB-DLO May 1997, No.12
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> \==================================================================\
> \ \
> \ CONTENTS \
> \ \
> \ ANNOUNCEMENTS \
> \ The Euro Weather Generator evaluated \
> \ \
> \ FORTHCOMING MEETINGS \
> \ The International Conference on Mathematical Biology (ICMB) \
> \ \
> \ Lectures of Prof. C.O. Stockle \
> \ \
> \ Wind erosion: an international symposium/workshop \
> \ \
> \ Workshop "Modern problems in agro-ecosystem modeling" \
> \ \
> \ \
> \ NEW BOOKS \
> \ 9 new books, 3 PhD theses and 1 Journal \
> \ \
> \ THE MARKET PLACE, WITH: \
> \ ICASA \
> \ International Consortium for Application of Systems approaches \
> \ to Agriculture \
> \ \
> \ PhD projects (wanted) \
> \ \
> \==================================================================\
>
> ====================================================================
> EDITORIAL
>
> Dear Readers,
>
> Many of you inquired whether they missed a CAMASE_NEWS edition, and
> whether they were still on the mailing list. Answers: 'no', and
> 'yes'. The contract of one of us (Marja) ended in October, and
> indeed: we could not produce a newsletter issue since the end of
> October 1996, even though there was plenty of material. Fortunately,
> she is back, at least for a while, and we intend to arrange for a
> proper continuation in the electronic form and to ensure an
> interesting series of newsletters to come. For the time being, the
> name CAMASE is still used, but we are exploring linkage with ICASA.
>
> Thank you for remaining interested in the newsletter. We do
> encourage you (again) to submit information on important books,
> meetings, ideas.
> Your many questions about CAMASE_NEWS in recent months indicated
> to us that it really serves a communication purpose.
>
> The WWW site with the CAMASE Register of Agro-ecosystem Models has
> also deteriorated somewhat, but we are indeed looking for means to
> get it back.
>
> On to the June issue of the CAMASE_NEWS!
>
> Frits Penning de Vries
> Marja Plentinger
> ====================================================================
>
>
>
> * * *
>
> ANNOUNCEMENTS
>
> k e y w o r d s:
> E U R O W e a t h e r G e n e r a t o r e v a l u a t e d
>
>
> * EURO WEATHER GENERATOR EVALUATED
>
> The DLO-Winand Staring Centre in Wageningen recently launched the
> Euro Weather Generator; an implementation of the WGEN model by
> Richardson. This package for analysis and generation of daily
> weather data comes with a set of model parameters compiled from 355
> main meteorological stations in Europe. The work was part of a
> research study to develop a Crop Growth Monitoring System (CGMS) for
> the Joint Research Centre of the European Union. One of the goals of
> the research was to evaluate the suitability of the WGEN model to
> approximate, from a certain point in the growing season, future
> weather conditions. Although the interest in synthetic weather
> generators is increasing, their usefulness is sometimes subject for
> debate. Parameter derivation for weather generators requires for a
> certain location a record of at least 20 to 30 years of accurate
> data. The additional value of synthetic weather generation, if such
> record exists, is doubtful. Contrary, when there is shortness of
> real data, there is a demand for generated weather, but the
> confidence in the derived parameter values may be overvalued.
>
> The Euro Weather Generator consist of three components: WANAL
> (Weather ANALyzer), WTHGEN (WeaTHer GENerator) and a grid-based
> database with parameter values. WANAL calculates parameter values of
> the Richardson model on basis of 20 to 30 years of daily weather
> data. WTHGEN reads these parameter values from file and generates
> synthetic weather, either in binary or ASCII format. The nice thing
> of the Euro Weather Generator is that it covers all meteorological
> data needed to apply crop growth simulation models; global
> radiation, temperature, vapour pressure, wind speed and
> precipitation. The Winand Staring Centre tested sets of synthetic
> weather data against real data for some sites. This was done with
> first and with second order parameter values. First order parameter
> values are those that are calculated from real data while second
> order parameter values are derived from synthetic weather data. They
> concluded that generated weather data could well be compared with
> real data for temperature and radiation, but that the accuracy was
> less with respect to daily rainfall.
>
> We generated a set of 30 years of synthetic weather data based on
> the daily weather data of 1961-1990 of the department of Meteorology
> of Wageningen Agricultural University. A model of winter wheat was
> used to calculate total biomass production on basis of the generated
> and the real data set. Model output of both sets was evaluated by
> means of probability curves. Results show that the data generated by
> the Euro weather generator behave well both for the potential and
> the water-limited production situation. The absolute level and the
> variance of biomass production for real and synthetic weather data
> show reasonable agreement.
>
> I concluded that the Euro Weather Generator is a good starting point
> to study weather generation, however, validity of the assumptions in
> the WGEN model remains a prerequisite.
>
> References
> Voet, P. van der, K. Kramer & C.A. van Diepen, 1996. Parametrization
> of the Richardson weather generator within the European Union.
> Wageningen (The Netherlands), DLO-Winand Staring Centre. Report 92.
> 73 pp.; 26 Figs; 2 Tables; 26 Refs; 20 Annexes
>
> Ing. W. Stol
> Research Institute for Agrobiology and Soil Fertility (AB-DLO)
> Department of Grassland and Agrosystems Research
> P.O.Box 14
> 6700 AA Wageningen
> The Netherlands.
> Telephone: +31.317.475937
> Telefax: +31.317.423110
> Internet: [log in to unmask]
>
>
>
> * * *
>
> FORTHCOMING MEETINGS
>
>
> * THE INTERNATIONAL CONFERENCE ON MATHEMATICAL BIOLOGY (ICMB)
> Hangzhou, China
> 26-29 May, 1997
>
> The International Conference on Mathematical Biology (ICMB) will be
> held on 26-29 May, 1997, in Hangzhou which is one of the most
> beautiful cities of China.
> ICMB'97 is jointly sponsored by the Chinese Mathematical Society,
> the Chinese Society of Biophysics, the Chinese Society of
> Biomathematics, and Zhejiang Agriculture University. The organizing
> committee is chaired by Lansun Chen (Chairman of the Chinese Society
> of Biomathematics), and the program committee is chaired by Lansun
> Chen and Simon A. Levin (professor at Department of Ecology and
> Evolutionary Biology, Princeton University, United States).
> English is the official language during the conference and for the
> submitted abstract.
>
> The scientific program of ICMB'97 has five sessions which cover the
> following topics:
> 1. Mathematical Ecology.
> 2. Environmental Resource and Sustainable Agriculture.
> 3. Genetics and Evolution.
> 4. Neural Computing.
> 5. Biomedical Information Processing.
> Each session will contain contributed papers of 20 minutes each.
>
> Contact
> Professor Jun Zhu
> Zhejiang Agriculture University
> Research Center of Biomathematics
> Hangzhou 310029
> People's Republic of China.
> Telephone: +571.604 1733 ext. 2871
> Telefax: +571.604 9815
> Internet: [log in to unmask]
>
>
> * LECTURES OF PROF. C.O. STOCKLE
> 26-30 May, 1997
>
> In the period 1997, May 26-30 (from Monday till Friday)
> Prof. C.O. Stockle will hold 5 lectures at Pisa. Three of them will
> be held at the Department of Agronomy and Agro-Ecosystem Management
> and two at the "Sant'Anna" Advanced School of University Studies and
> Doctoral Research.
>
> The lectures will be focused around the following topics:
> 1. The role played by simulation models in cropping systems analysis
> with particular reference to Cropsyst.
> 2. General description of Cropsyst and its applications.
> 3. Detailed presentation of some specific modules included in the
> Cropsyst programme (i.e. water and nitrogen simulations).
> 4. Description of supporting tools (i.e. weather generators, GIS,
> risk analyzers), their coupling to Cropsyst and applicability for
> sustainable agriculture studies on territorial scale.
>
> All the lectures will be held in English.
>
> Contact
> Prof. F.M. Martorana
> Dept. Agronomy & Agro-ecosystems
> V.S. Michele degli Scalzi 2
> 56124 Pisa
> Italy.
> Internet: [log in to unmask]
>
>
> * WIND EROSION: AN INTERNATIONAL SYMPOSIUM/WORKSHOP
> Commemorating the 50th anniversary of the USDA's Wind Erosion
> Research at Kansas State University
> Manhattan, Kansas, United States
> 3-5 June, 1997
>
> Background
> This symposium is held in commemoration of the 50th anniversary of
> the USDA's Wind Erosion Research at Kansas State University.
>
> The purpose is to bring together leading scientists,
> conservationists, and policy makers to: identify the present and
> future wind erosion threat to sustainability; summarize current
> understanding of wind erosion processes, prediction, and control;
> identify societal needs and develop strategies for sustaining
> agriculture, protecting the environment, and conserving the natural
> resource against the ravages of wind erosion.
>
> Program
> Scientists, engineers and conservationists are invited to present
> papers and/or attend sessions related to the occurrence,
> measurement, and prediction and control of wind erosion and related
> processes and consequences. Plenary, concurrent, and poster sessions
> are planned.
> Keynote addresses will feature various aspects of wind erosion.
>
> Additional information (e-mail preferred)
> USDA-ARS, NPA, Wind Erosion Research Unit
> Throckmorton Hall, Kansas State University
> Manhattan
> KS 66506 United States.
> Telephone: +1.913.532 6528
> Telefax: +1.913.532 6495
> Internet: [log in to unmask]
> World Wide Web URL: http://www.weru.ksu.edu/
>
>
> * WORKSHOP "MODERN PROBLEMS IN AGRO-ECOSYSTEM MODELING"
> Laboratory of Agro-ecosystem Simulation
> Agrophysical Research Institute
> St.-Petersburg, Russia
> June 21-26, 1997
>
> In 1997 will be fulfilled the 30th anniversary of the Laboratory of
> Agro-ecosystem Simulation, Agrophysical Research Institute,
> St.-Petersburg. During the last two decades the Laboratory deals
> with the development of mathematical models in agriculture and
> agro-ecology as well as the theoretical investigation of related
> phenomena in ecology, physics and biology. The Laboratory staff
> plans to organize the Jubilee International Workshop: "The Modern
> Problems in Agro-ecosystem Modeling". The workshop will be held at
> the end of June, 1997 in Agrophysical Research Institute,
> St.-Petersburg, Russia.
>
> Areas of interest
> New approaches to mathematical description of processes taking place
> in the soil, atmosphere and plant canopy.
> Modern tendencies and non-traditional applications of ecosystem
> simulation models (Ecological Monitoring, Climate Change Impact onto
> Agro-ecosystems, Energy Crops, Agriculture on Contaminated Areas,
> Sustainable Agriculture etc.).
> The competition of the models on the base of previously adjusted set
> of experimental data is planned.
>
> For more details contact
> Prof. R.A. Poluektov
> Agrophysical Research Institute
> 14 Grazhdansky prospect
> 195220 St.-Petersburg
> Russia.
> Telephone: +7.812.534 4640
> Telefax: +7.812.535 5220
> Internet: [log in to unmask]
>
>
>
> * * *
>
> NEW BOOKS
>
>
> * Bakkes, J.A. & J.W. van Woerden (eds.), 1997. The future of the
> global environment: A model-based analysis supporting UNEP's first
> global environment outlook. RIVM 402001007 and UNEP/DEIA/TR.97-1.
> 154 pp.
>
> Content
> 1. Social and economic development and protection of environmental
> resources: the core questions and how to address them.
> 2. Environmental pressure: socio-economic driving forces and derived
> demands.
> 3. Interaction between land, water and the atmosphere.
> 4. Use of land and water.
> 5. Nature and its diversity.
> 6. Effects on human health.
> 7. Responses: priorities and strategies for making progress in
> implementing Agenda 21.
> Introducing the appendices: The forecasting process.
> Appendix 1. Core data sets for integrated environment assessment and
> modelling.
> Appendix 2. Scenario interpretation.
> Appendix 3. Model descriptions.
> The IMAGE 2 model.
> The TARGETS 1.0 model.
> The TARGETS Population and Health model.
> The RAINS model.
> The water demand satisfaction model.
> The pressure index for non-domesticated areas.
>
> Contact
> Mr. J.A. Bakkes
> National Institute of Public Health & Environmental Protection
> (RIVM)
> P.O.Box 1
> 3720 BA Bilthoven
> The Netherlands.
> Telefax: +31.30.2744435
> Internet: [log in to unmask]
>
>
> * Elseviers Science B.V. Explore the diverse world of simulation.
> ISSN: 0928-4869
>
> Aims and scope
> New in the field of simulation, this journal publishes original
> high-quality applied, research and tutorial papers across all facets
> of the discipline. Emphasis is on providing a diverse combination of
> studies on different applications of simulation - from biology and
> medicine to earthquake and civil engineering.
>
> Contact
> Full details of Simulation Practice and Theory (aims & scope,
> editorial board, submission information) can be found in the
> journal's home page on the web:
> http://www.elsevier.nl/locate/simpra
> To order please contact the Customer Support Department at the
> Regional Sales Office:
> Elsevier Science
> P.O.Box 211
> 1000 AE Amsterdam
> The Netherlands.
> Telephone: +31.20.4853757
> Telefax: +31.20.4853432
> Internet: [log in to unmask]
>
>
> * Heinen, M., 1997. Dynamics of water and nutrients in closed,
> recirculating cropping systems in glasshouse horticulture: with
> special attention to lettuce grown in irrigated sand beds. PhD
> Thesis Wageningen Agricultural University. 270 pp.
> ISBN: 90-5485-667-x
>
> Contents
> 1. Introduction.
> 2. Water movement, nutrient transport and root uptake: theory.
> 3. Water movement, nutrient transport and root uptake: numerical
> implementation.
> 4. Hysteretic hydraulic properties of the coarse and substrate.
> 5. Description of sand bed system and experiments.
> 6. Growth, rooting characteristics, and water and nutrient balances
> of lettuce grown in irrigated sand beds.
> 7. Root zone conditions: measurements and simulation.
> 8. Application of the model in case studies.
> Appendix 1. On the function P.
> Appendix 2. Simultaneous fit of drying and wetting data using
> Mathematica.
> Appendix 3. Description of note numbers occurring in Chapter 5.
> Appendix 4. Background information about dimensioning the TDR probe.
> Appendix 5. Parameter optimization of the logistic growth function
> with Genstat 5.
> Appendix 6. Input data in the simulation model for all simulation
> runs.
> Appendix 7. Computation of 0/.
> Appendix 8. Computation of EC of a solution.
>
> Contact
> Dr. M. Heinen
> Research Institute for Agrobiology and Soil Fertility (AB-DLO)
> P.O.Box 129
> 9750 AC Haren (Gr.)
> The Netherlands.
> Telephone: +31.50.5337353
> Telefax: +31.50.5337291
> Internet: [log in to unmask]
>
>
> * Ittersum, M.K. van, N. de Ridder, T. van Rheenen, E.J. Bakker,
> M.S.M. Toure & K. Sissoko, 1997. Land use analysis using multiple
> goal linear programming. A course manual. Production
> Soudano-Sahelienne (PSS). Exploitation optimale des elements
> nutritifs en elevage. Projet de cooperation scientifique. Rapports
> PSS No. 31. 148 pp.
>
> Contents
> 1. Introduction to the course.
> 2. Why explorative land use studies?
> 3. Linear programming and multiple criteria analysis.
> 4. Methodology for explorative land use studies.
> 5. The European Community case study.
> 6. The PSS study of the Sudano Sahelian zone of Mali.
>
> Contact
> Dr.ir. M.K. van Ittersum
> Wageningen Agricultural University
> Dept. Theoretical Production Ecology
> P.O.Box 430
> 6700 AK Wageningen
> The Netherlands.
> Telephone: +31.317.482382
> Telefax: +31.317.484892
> Internet: [log in to unmask]
>
>
> * Kraker, J. de, 1996. The potential of natural enemies to suppress
> rice leaffolder populations. Thesis Landbouwuniversiteit Wageningen.
> 257 pp.
> ISBN: 90-5485-601-7
>
> Contents
> 1. Population dynamics of rice leaffolders and their natural enemies
> in irrigated rice in the Philippines.
> 2. Impact of N-fertilization on the population dynamics and natural
> control of rice leaffolders.
> 3. Rice leaffolder egg mortality in irrigated rice fields.
> 4. Identification of major predators of rice leaffolder eggs in
> laboratory.
> 5. Predation of rice leaffolder eggs by crickets (Orthoptera:
> Gryllidae): 1. Effect of prey and predator density.
> 6. Predation of rice leaffolder eggs by crickets (Orthoptera:
> Gryllidae): 2. Searching behaviour and time budgets.
> 7. A model of predation of rice leaffolder eggs in the field.
> 8. Do natural enemies prevent rice leaffolder damage?
> Appendix
>
> Contact
> Dr. J. de Kraker
> Wageningen Agricultural University
> Dept. Theoretical Production Ecology
> P.O.Box 430
> 6700 AK Wageningen
> The Netherlands.
> Telephone: +31.317.482728
> Telefax: +31.317.484892
> Internet: [log in to unmask]
>
>
> * Kraalingen, D.W.G. van & W. Stol, 1997. Evapotranspiration modules
> for crop growth simulation. Implementation of the algorithms from
> Penman, Makkink and Priestley-Taylor / Wageningen : DLO Research
> Institute for Agrobiology and Soil Fertility ; Wageningen : The C.T.
> de Wit Graduate School for Production Ecology. - Quantitative
> approaches in systems analysis ; no. 11, 29 pp.; 10 Figs.; 5 Tables,
> 35 Refs.; 4 Annexes
>
> New AB-DLO publication: Evapotranspiration modules for crop growth
> simulation
>
> Volume no. 11 of the series Quantitative Approaches in Systems
> Analysis (QASA) is on standard modules for evapotranspiration.
> Calculation of evapotranspiration is essential for the estimation of
> crop water use or for studying the effect of drought stress on crop
> performance with simulation models. Several methods are available
> for calculation of evapotranspiration. This report describes three
> different methods: the Penman method and the approaches of Makkink
> and Priestley-Taylor. The modules described in this report are
> developed for use in general crop growth models for water-limited
> conditions. The application of these modules, however, is not
> limited to crop growth models.
>
> The Penman method is important for the general understanding of
> evapotranspiration from surfaces both in more advanced models (such
> as greenhouse models) and in more simple approaches. When considered
> over longer periods of time (> 10 days), the Penman method
> calculates crop water loss with a reasonable degree of accuracy. It
> can be considered the best among the simple approaches. All three
> methods have in common that they estimate evapotranspiration of
> short, well-watered crops. However, they differ in their data
> requirements. Makkink and Priestley-Taylor require fewer
> meteorological observations because they are based on the
> observation that in many climates, the radiation-driven part of
> evapotranspiration is much more important than the part driven by
> vapour pressure deficit and wind speed. In the Priestley-Taylor
> equation, evapotranspiration is proportional to net radiation, while
> Makkink evapotranspiration is proportional to short-wave radiation.
> The Penman method requires daily values of radiation, temperature,
> vapour pressure and wind speed. The Makkink and Priestley-Taylor
> equations require only radiation and temperature.
>
> The Priestley-Taylor equation is used world-wide, e.g. in the IBSNAT
> network, but regional calibration can be necessary since it is based
> on the assumption that a constant relation exists between the
> evaporative demand by radiation and by wind. The same holds for the
> Makkink equation which is calibrated for use during the growing
> season in The Netherlands. In The Netherlands, Makkink and
> Priestley-Taylor should be used only during the growing season. An
> important finding is that the Makkink and Priestley-Tailor methods
> are valid for a larger part of the year in areas closer to the
> equator. This more or less justifies the use of these simple methods
> in agro-ecological zonation studies in these areas.
>
> The Penman formula calculates evapotranspiration by assuming that
> the surface temperature is not very different from the air
> temperature. Under normal circumstances this is indeed the case, but
> under extreme conditions surface temperatures can differ much from
> air temperatures, resulting in unwanted errors. To avoid this
> situation, the Penman module, as described here, can iteratively
> search for the equilibrium surface temperature and give an improved
> estimate of surface water loss.
>
> This report and the software-code are available against handling
> costs (Dfl 110,-) from:
> AB-DLO, Software Product Support
> c/o P.W.J. Uithol
> P.O.Box 14
> 6700 AA Wageningen
> The Netherlands.
> Internet: [log in to unmask]
>
>
> * Kropff, M.J., P.S. Teng, P.K. Aggerwal, J. Bouma, B.A.M. Bouman,
> J.W. Jones & H.H. van Laar (Eds.), 1997. Applications of systems
> approaches at the farm and regional levels. Volume 2. Proceedings of
> the Second International Symposium on System Approaches for
> Agricultural Development, held at IRRI, Los Banos, Philippines, 6-8
> December 1995. Systems approaches for sustainable agricultural
> development, v. 6. Kluwer Academic Publishers in co-operation with
> International Rice Research Institute (IRRI) & International
> Consortium for Agricultural System Applications. SAAD 6. 465 pp.
> ISBN: 0-7923-4286-0 (vol. 2); 0-7923-4287-9 (set)
>
> Abstract
> Systems approaches for agricultural development are needed to
> determine rational strategies for the role of agriculture in
> national development. Mathematical models and computer simulation
> provide objective tools for applying science to determine and
> evaluate options for resource management at field, farm and regional
> scales. However, these tools would not by fully utilizable without
> incorporating social and economic dimensions into their application.
> The second international symposium, Systems Approaches for
> Agricultural Development, held in Los Banos, 6-8 December 1995,
> fostered this link between the bio-physical sciences and the social
> sciences in the selection of keynote papers and oral presentations,
> a selection of which are included in these books. The contents
> further reflect how systems approaches have definitely moved beyond
> the research mode into the application mode. The large number and
> high quality of interdisciplinary research projects reported from
> different parts of the globe, to determine land use options that
> will meet multiple goals and yet sustain natural resource bases, is
> a key indicator of this 'coming to age'. A the farm level, where
> trade-off decisions between processes and products (commodities)
> feature strongly, much progress is also evident in the development
> of systems-based tools for decision making. At the field level
> optimization of resource use and minimizing environmental effects
> has become a major concern, for which systems approaches are
> indispensable.
> This book, of which Volume 1 deals with regional and farm studies
> level and Volume 2 with field level studies, will be of particular
> interest to all agricultural scientists and planners, as well as
> students interested in multidisciplinary and holistic approaches to
> agricultural development.
>
> Sold and distributed
> In the U.S.A. and Canada by Kluwer Academic Publishers, 101 Philip
> Drive, Norwell, MA 02061, United States.
> In all other countries, sold and distributed by Kluwer Academic
> Publishers Group, P.O.Box 322, 3300 AH Dordrecht, The Netherlands.
>
>
> * Muehle, H. & S. Claus (eds), 1996. Reaktionsverhalten von
> agrarischen Oekosystemen homogener Areale - Methoden der
> Beschreibung, Messung und Quantifizierung. B.G. Teubner
> Verlagsgesellschaft Stuttgart-Leipzig.
> ISBN 3-8154-3529-3
>
> Content
> 1. Stabilitaet und Belastbarkeit von Oecosystemen
> (H. Muehle, S. Claus).
> 2. Entwicklung modular aufgebauter dynamischer mathematischer
> Modelle zur Charakterisierung und Quantifizierung von Prozessen
> in agrarischen Oekosystemen auf homogenen Arealen.
> 2.1 Modell fuer Wachstum und Entwicklung von Kulturpflanzen unter
> Beruecksichtigung wesentlicher Zustandsgroessen des C- und N-
> Haushaltes der Pflanzen (S. Claus, P. Wernecke).
> 2.2 Das Bodenprozessmodell CANDY (U. Franko, B. Oelschlaegel).
> 2.3 Modell zum Energie- und Wasseraustausch von
> Pflanzenbestaenden (U. Pigla, P. Wernecke).
> 2.4 Modell des CO2-Gasaustausches von Pflanzenbestaenden
> (J. Mueller, P. Wernecke).
> 2.5 Modelle der Ontogenese fuer die Kulturarten Winterweizen,
> Wintergerste und Winterraps (P. Wernecke, S. Claus).
> 2.6 Populationsmodelle fuer Schaedlinge und Nuetzlinge
> (B. Freier, H. Triltsch, D. Rossberg, T. Kreuter, T. Wetzel).
> 2.7 Kopplung der Modelle zu einem Komplexmodell (S. Claus,
> U. Franko, P. Wernecke, G. Dubksy, D. Rossberg).
> 2.8 Die Simulationsumgebung ESS (G. Dubksy, S. Claus, U. Franko).
> 3. Modellrelevante Experimente und Untersuchungen.
> 3.1 Modellrelevanz der Experimente (H. Muehle, H. Brinkmann,
> M. Strutz).
> 3.2 Charakterisierung des Versuchsstandortes Quedlinburg
> (P. Wernecke, H. Brinkmann, M. Strutz, U. Pigla).
> 3.3 Zeitlicher Verlauf wesentlicher Inhaltsstoffe von Boden und
> Pflanzen (M. Strutz, H. Brinkmann).
> 3.4 Oekophysiologische Wechselbeziehungen zwischen Pflanze und
> Boden (W. Merbach, G. Knof, J. Augustin, H.-J. Jacob,
> R. Jaeger, V. Toussaint).
> 4. Oekosystem-Monitoring.
> 4.1 Anforderungen an Messsysteme fuer das Oekosystem-Monitoring
> zur Untersuchung agrarischer Oekosysteme (H. Muehle,
> W. Liedecke, S. Claus).
> 4.2 Automatisierte Erfassung von Umweltgroessen (W. Liedecke).
> 4.3 Thermovisionsmessungen an Pflanzenbestaenden (W. Liedecke).
> 4.4 Messtechnische Voraussetzungen fuer die Erfassung des CO2-
> Gasaustausches "Pflanzenbestand - Atmosphaere" (W. Liedecke,
> J. Mueller).
> 5. Reaktion von agrarischen Oekosystemen ausgewaehlter Standorte auf
> Witterungsbedingungen und Stickstoffversorgung (H. Muehle,
> P. Wernecke, S. Claus, G. Dubksy).
> 6. Zusammenfassung und Ausblick (H. Muehle, S. Claus).
> Literatur.
> Summary.
> Verzeichnis der Autoren.
> Sachregister.
>
> Contact
> If you are interested in the book, please send a message to
> [log in to unmask]
>
>
> * Plentinger, M.C. & F.W.T. Penning de Vries (Eds.), 1996. Rotation
> models for ecological farming. CAMASE/PE workshop report.
> Wageningen: DLO Research Institute for Agrobiology and Soil
> Fertility; Wageningen: The C.T. de Wit Graduate School for
> Production Ecology (Quantitative Approaches in Systems Analysis; no.
> 10). 138 pp.
> ISBN: 90-73384-50-8
> NUGI: 835
>
> Summary
> CAMASE and PE (C.T. De Wit Graduate School for Production Ecology)
> organised together the workshop "Rotation models for ecological
> farming" in May 1996.
> During this workshop, ecologists and modellers met to seek mutually
> acceptable starting points for the use of dynamic simulation models
> in crop rotations. On one hand, ecologists pointed out specific
> questions in their discipline, related to crop rotations. Modellers
> presented the current status of their models in the field of
> ecological farming systems, especially crop rotations. Strong issues
> and strong processes in models were stressed, while other demanding
> issues were placed on a priority list for further investigation.
> Ecologists reviewed the possibilities for the use of dynamic
> simulation models in monitoring their field experiments.
> This document describes the models, their evaluation and
> applications.
>
> Content
> 1. Introduction
> I. Themes for the workshop.
> 2. Designing a multifunctional crop rotation and laying it out in
> an agro-ecologically appropriate way (P.H. Vereijken).
> 3. The modeller's perspective (F.W.T. Penning de Vries).
> II. Crop rotation models.
> 4. APSIM, and its use in cropping systems analysis (H. Meinke,
> P.S. Carberry, B.A. Keating, D.M. Freebairn, J. Turpin &
> J. Dimes).
> 5. The CropSyst Model: A brief description (C.O. Sockle &
> M. Donatelli).
> 6. The soil-plant-atmosphere model DAISY (H. Svendsen &
> N.E. Nielsen).
> 7. Simulation of crop rotation using the DSSAT 3 crop models
> (W.T. Bowen, P.K. Thornton, P.W. Wilkens & G. Hoogenboom).
> 8. The EPIC-based models for simulating cropping systems
> (Ph. Debaeke & M. Cabelguenne).
> 9. NDICEA: Modelling nitrogen dynamics in crop rotations in
> ecological agriculture (A.S.J. Habets & G.J.M. Oomen).
> 10. ROTASK 1.0 (R.E.E. Jongschaap).
> 11. Simulation of nitrogen turnover in crop rotations: Application
> of the SUNDIAL model (J.U. Smits, N.J. Bradbury,
> M.J. Glendining & P.E. Smith).
> 12. The modified WAVE model (H.W.G. Booltink, P. Droogers &
> J. Verhagen).
> III. The ecologist's perspective.
> 13. Needs, development and experiences with an interactive tools
> for planning of manure allocation and feed supply on organic
> dairy farms (J.P. Hansen & I. Sillebak Kristensen).
> 14. Lovinkhoeve: a research facility for organic farming
> (J.J. Schroder).
> 15. An approach to a place for models in designing alternative
> cropping system (T. Dore & J.M. Meynard).
> IV. Model evaluations and plans for future experiments, data and
> model sharing, model development.
> 16. Suggestions for priority issues and future cooperation.
> 17. The models by themes.
>
> Address for ordering copies of volumes in the series:
> Secretariat
> TPE-WAU
> Bornsesteeg 47
> 6708 PD Wageningen
> The Netherlands.
> Telephone: +31.317.482141
> Telefax: +31.317.484892
> Internet: [log in to unmask]
>
>
> * Ridder, N. de, 1997. Hierarchical levels in agro-ecosystems:
> selective case studies on water and nitrogen. Thesis Agricultural
> University Wageningen. 193 pp.
> ISBN: 90-5485-657-2
>
> Table of contents
> 1. General introduction.
> 2. Analysis of environment and species effects on the magnitude of
> biomass investment in the reproductive effort of annual pasture
> plants.
> 3. Energy and protein balances in traditional livestock systems and
> ranching in eastern Botswana.
> 4. Some aspects of the role of organic matter in sustainable
> intensified arable framing systems in the West-African
> semi-arid-tropics (SAT).
> 5. Estimating biomass through transfer functions based on simulation
> model results: a case study for the Sahel.
> 6. Computed evapotranspiration of annual and perennial crops at
> different temporal and spatial scales using published parameter
> values.
> 7. "Mimicking" scale dependency of run-off coefficients: a
> multi-scale water balance model with reference to West Africa.
> 8. Effects of land use changes on water and nitrogen flows at the
> scale of West African inland valleys: a conceptual model.
> 9. General discussion.
>
> Contact
> Drs. N. de Ridder
> Wageningen Agricultural University
> Dept. Agronomy
> P.O.Box 341
> 6700 AH Wageningen
> The Netherlands.
> Telephone: +31.317.483037
> Telefax: +31.317.484575
> Internet: [log in to unmask]
>
>
> * Smith, P., J.U. Smith & D.S. Powlson, 1996. GCTE Task 3.3.1. Soil
> Organic Matter Network (SOMNET): 1996 Model and Experimental
> Metadata. Global Change and Terrestrial Ecosystems Report No. 7.
> Soil Science Department, IACR-Rothamsted, Harpenden, Herts, UK.
> Published by the GCTE Focus 3 Office, Wallingford, UK. 255 pp.
>
> Table of Contents
> Overview of GCTE Focus 3 "Global Change Impact on Agriculture,
> Forestry and Soils"
> Task 3.3.1: Global Change Impact on Soil Organic Matter.
> Objectives.
> Rationale and Scope.
> Task 3.3.1 Core Research Projects.
> The GCTE Soil Organic Matter Network (SOMNET).
> I. Formal GCTE SOMNET members.
> IA - Metadata on 30 models.
> IB - Experimental Metadata on over 60 sites.
>
> More information
> Much more detail on the models and database, and other information
> can be found at
> http://yacorba.res.bbsrc.ac.uk/cgi-bin/somnet
>
> Dr. P.E. Smith
> IACR Rothamsted
> Soil Science Department
> Harpenden
> Herts AL5 2JQ
> United Kingdom.
> Telephone: +44.1582.763 133 ext. 2228
> Telefax: +44.1582.760 981
> Internet: [log in to unmask]
>
>
> * Sterk, G., 1997. Wind erosion in the Sahelian zone of Niger:
> Processes, models, and Control Techniques. Documents sur la Gestion
> des Ressouces Tropicales Tropical Resource Management Papers no. 15.
> Also published as thesis Wageningen Agricultural University. 151 pp.
> ISSN: 0926-9495
>
> Contents
> 1. Introduction.
> 2. The effect of turbulent flow structures on saltation sand
> transport in the atmospheric boundary layer.
> 3. Comparison of models describing the vertical distribution of
> wind-eroded sediment.
> 4. Mapping wind-blown mass transport by modeling variability in
> space and time.
> 5. Wind-blown nutrient transport and soil productivity changes in
> southwest Niger.
> 6. Wind erosion control with crop residues in the Sahel.
> 7. Farmers' knowledge of wind erosion processes and control methods
> in Niger.
> 8. Towards a regional mass budget of eolian transported material in
> a Sahelian environment.
> 9. Summary and conclusions
>
> Correspondence on this particular publication
> Wageningen Agricultural University
> Liaison Office
> P.O.Box 9101
> 6700 HB Wageningen
> Telephone: +31.317.484293
> Telefax: +31.317.484292
>
>
> * Teng, P.S. , M.J. Kropff, H.F.M. ten Berge, J.B. Dent,
> F.P. Lansigan & H.H. van Laar (Eds.), 1997. Applications of systems
> approaches at the farm and regional levels. Volume 1. Proceedings of
> the Second International Symposium on System Approaches for
> Agricultural Development, held at IRRI, Los Banos, Philippines, 6-8
> December 1995. Systems approaches for sustainable agricultural
> development, v. 5. Kluwer Academic Publishers in co-operation with
> International Rice Research Institute (IRRI) & International
> Consortium for Agricultural System Applications. SAAD 5. 468 pp.
> ISBN: 0-7923-4285-2 (vol. 1); 07923-4287-9 (set 1 & 2)
>
> Abstract
> Systems approaches for agricultural development are needed to
> determine rational strategies for the role of agriculture in
> national development. Mathematical models and computer simulation
> provide objective tools for applying science to determine and
> evaluate options for resource management at field, farm and regional
> scales.
> However, these tools would not by fully utilizable without
> incorporating social and economic dimensions into their application.
> The second international symposium, Systems Approaches for
> Agricultural Development, held in Los Banos, 6-8 December 1995,
> fostered this link between the bio-physical sciences and the social
> sciences in the choice of keynote papers and oral presentations, a
> selection of which is included in this book. The book's contents
> further reflect how systems approaches have definitely moved beyond
> the research mode into the application mode. The large number and
> high quality of interdisciplinary research projects reported from
> different parts of the globe, to determine land use options that
> will meet multiple goals and yet sustain natural resource bases, is
> a key indicator of this 'coming to age'. A the farm level, where
> trade-off decisions between processes and products (commodities)
> feature strongly, much progress is also evident in the development
> of systems-based tools for decision making.
> This book will be of particular interest to all agricultural
> scientists and planners, as well as students interested in
> multidisciplinary and holistic approaches for agricultural
> development.
>
> Sold and distributed
> In the U.S.A. and Canada by Kluwer Academic Publishers, 101 Philip
> Drive, Norwell, MA 02061, United States.
> In all other countries, sold and distributed by Kluwer Academic
> Publishers Group, P.O.Box 322, 3300 AH Dordrecht, The Netherlands.
>
>
>
> * * *
>
> THE MARKET PLACE
>
> Do you feel that the research of your team is insufficiently
> known? In this section, we welcome a short description of your
> systems research group. We will also welcome offers of
> specific expertise or data, and calls for the same.
>
>
> * ICASA - INTERNATIONAL CONSORTIUM FOR APPLICATION OF SYSTEMS
> APPROACHES TO AGRICULTURE
>
> The still growing world population requires increased food
> production under conditions of heavy competition between agriculture
> and other sectors for limited resources. Quantification of
> potentials and limitations of agricultural production systems is
> necessary to improve use of scarce resources and to make land use
> sustainable.
>
> Several system-analytical tools can help us. Crop simulation models
> are used to predict effects of changes in environmental conditions,
> management practices and new plant-type designs. Decision support
> and expert systems aid in strategic and tactical decision-making at
> the farm level. Multiple goal linear programming allows us to
> compare results of alternative policies with different goals at a
> national and regional level.
>
> ICASA provides NARC's (NARC: National research centre or University
> for agriculture, particularly those in developing countries) and
> IARC's (IARC: International Agricultural Research Centre) with
> system-analytical tools for integrated thinking and research, and
> for practical applications aimed at optimal and sustainable
> agricultural production systems, resource management and rural
> development. Target groups include policy makers, extension
> services, and researchers in developing and developed countries.
> ICASA draws together systems scientists from six to nine
> organizations: NARC's are both participant and target group; ARO
> (ARO: Organization advanced in systems research) systems research
> groups continue to enhance the technologies and produce training
> programs; IARC's contribute eco-regional experience, research and
> contacts.
>
> Key points
> The problem
> - growing demand for food from sustainable agriculture
> - competition between agriculture and other sectors for limited
> resources
> - land erosion, degradation and climate change
> - determining optimal strategies by experimentation is not possible
>
> Transfer
> - standard models and methods must be tailored to local situations
> - technology transfer by training, workshops, advanced degree
> programs
> - research centres begin to develop a capacity for systems research
>
> ICASA
> - draws together systems scientists from several organizations
> - unique expertise in research on agricultural systems
> - tool for integrated thinking and research
> - applications for agricultural production systems, resource
> management and rural development
>
> Tools
> - system-analytical tools include
> - crop, soil and pest models
> - decision support and expert systems
> - geographic information systems
> - multiple goal linear programming
> - systems approaches can
> - enhance research efficacy
> - help to operationalize interdisciplinary research
> - provide tools for planning agricultural research
>
> Information
> Prof.dr. J. Bouma
> Wageningen Agricultural University
> Dept. Soil Science and Geology
> P.O.Box 37
> 6700 AA Wageningen
> The Netherlands.
> Telephone: +31.317.484438
> Telefax: +31.317.482419
> Internet: [log in to unmask]
>
> Dr. J. Jones
> University of Florida
> Dept. of Agricultural Engineering
> P.O.Box 110570
> Gainesville
> Florida 32611
> United States.
> Telephone: +1.352.392.8694
> Telefax: +1.352.392.4092
> Internet: [log in to unmask]
>
>
> * PHD PROJECTS (WANTED)
> In this section we would like to make some room for PhD project
> topics of students around the world. Just send us your name, the
> PhD project topic, the supervisor, the finish date, and Internet
> address.
>
>
> ====================================================================
> CAMASE: A CONCERTED ACTION FOR THE DEVELOPMENT AND TESTING OF
> QUANTITATIVE METHODS FOR RESEARCH 0N AGRICULTURAL SYSTEMS AND THE
> ENVIRONMENT.
>
> CAMASE was financially supported by the European Community Specific
> Programme for Research, Technological Development and Demonstration
> in the Field of Agriculture and Agro-industry, including Fisheries.
>
> The objectives of CAMASE were to advance quantitative research on
> agricultural systems and their environment in the EU-countries, by
> improving systems research in participating institutes through
> exchange and standardization of concepts, approaches, knowledge,
> computer programs and data.
> With CAMASE_NEWS, we aim to improve communication among scientists
> working in agro-ecosystem modelling and interested in better access
> to appropriate models, data, and related tools, instruction
> materials. People can contribute spontaneously or will be invited to
> contribute. Responsibility for the opinions expressed rests with the
> authors.
> CAMASE_NEWS will appear four times per year. Please submit news
> items for CAMASE_NEWS and requests for new subscriptions to:
>
> F.W.T. Penning de Vries
> DLO Research Institute for Agrobiology and Soil Fertility (AB-DLO)
> P.O.Box 14
> 6700 AA Wageningen
> The Netherlands.
> Telephone: +31.317.475960
> Telefax: +31.317.423110
> Internet: [log in to unmask]
> ====================================================================
>
=======================================================================
Gerrit Hoogenboom
Associate Professor
Department of Biological and Agricultural Engineering
The University of Georgia
Griffin, Georgia 30223-1797, USA
Phone: 770-229-3438 (New !)
FAX: 770-228-7218
E-mail: [log in to unmask]
=======================================================================
|
