Abstract
Daily contributions to the final yields were estimated by means of a second order response surface model. The combination of an energy, a temperature and a water state term showed the greatest coefficient of determination. The particular effect on the seed yield of insolation expressed as hours of bright sunshine, was positive from emergence to the ripening period, when no water stress was present. By water stress increasing hours of bright sunshine affected the seed yield negatively. The effect of night temperature was negative though small during the whole life cycle. The haulm yield was negatively affected by increasing insolation during the flowering phase. During the ripening phase a curvilinear effect with an optimum about 8 to 9 hours of bright sunshine was evident. From emergence to first flowering rising night temperature increased yield. During flowering and ripening a curvilinear effect with optimum from 12 to 15°C appeared.
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Skjelvåg, A.O. A crop-weather analysis model applied to field bean. Int J Biometeorol 24, 301–313 (1980). https://doi.org/10.1007/BF02250572
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DOI: https://doi.org/10.1007/BF02250572