A new disease of onion caused by Aphelenchoides besseyi is reported from Sri Lanka. Symptoms are similar to those of the White tip disease of rice, caused by the same nematode: distortion, twisting of stems and discoloration of the leaf apical portion. Chemical treatments increased quantitative and qualitative yields of onion bulbs. Correlation between final nematode populations in the stem tissues with percentage of plants with symptoms or with yields indicate that A. besseyi is a major factor of the disease.
Aphelenchoides besseyi on onion in Sri Lanka
Sasanelli N;
1996
Abstract
A new disease of onion caused by Aphelenchoides besseyi is reported from Sri Lanka. Symptoms are similar to those of the White tip disease of rice, caused by the same nematode: distortion, twisting of stems and discoloration of the leaf apical portion. Chemical treatments increased quantitative and qualitative yields of onion bulbs. Correlation between final nematode populations in the stem tissues with percentage of plants with symptoms or with yields indicate that A. besseyi is a major factor of the disease.File in questo prodotto:
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