Potential yield of wheat in the United Kingdom: How to reach 20 t ha−1

Given the need for increased yields in wheat, new cultivars will be wanted with higher potential yield (in optimal physical environment, without weeds, pests or diseases). The aim in the United Kingdom is 20 t ha−1. Potential yield can be predicted from the annual total solar radiation incident on the crop, the fraction of incident photosynthetically active radiation (PAR) which is intercepted, radiation use efficiency (RUE), and harvest index....