Rhizoctonia

Anton HaverkortIn December last year – among other countries – Wageningen colleagues and I visited India and were confronted with – for me that is – almost unprecedented occurrence of black scurf causing considerable damage to potato crops.

Anton Haverkort In December last year – among other countries – Wageningen colleagues and I visited India and were confronted with – for me that is – almost unprecedented occurrence of black scurf causing considerable damage to potato crops. In Punjab the seed potato state in North-Western India we were shown fields with foliar symptoms as shown in the picture below. Some fields had severe symptoms and clearly had reduced yields as the foliage did not fully cover the soil so not all solar radiation was intercepted. The farmers had no clue as to what caused this phenomenon. Upon further inspection many basal parts of the stem showed brown lesions and when digging up the tubers many were deformed as shown in the picture.

 

anton.haverkort@wur.nl