Dear DSSAT users,

My name is Carlos Berná and I am doing a PhD research in Cranfield University (UK). The topic of my research is climate change impacts on agriculture water management on potato crop in UK.

Currently I am on the process of calibrating/validating DSSAT model for my study area.
The issue I am facing is that I am getting not very 'real' numbers coming out from the model comparing to the average 'normal' year for UK potato growers (40-50t/ha)... I am getting double Tuber fresh weight than that (110 t/ha). I am applying 400 kg/ha of N in 4 application along the growing season. Irrigation scheduling is set as 'automatic when required' (applying 30mm every time % of max water availability is down to 60% - this seems to work well). It is true that it might be a bit high levels of fertilizer, but if I put them down I get N stress... it is also true that I am not considering diseases or pests, and the plant is not water stressed.

Maybe I am missing something or doing something wrong... Any idea or comment will be welcome.

Please, feel free to comment on it.

Best regards,
Carlos