Beet growers to benefit from cercospora warnings

摘要

Anew early warning system for cer-cospora is being used by the British Beet Research Organisation (BBRO) following last season's outbreak, which exacerbated the impact of virus yellows on sugar beet yields.The model, developed in the US and road tested in Spain, predicts when conditions are conducive to rapid development of cercospora based on temperature and humidity, by calculating a daily infection value. When the sum of the preceding two days' daily infection values is seven or more, risk is high.