Effect of weather parameters on disease development of root and stem rot of sesame caused by Sesamum indicum L.

Abstract

Sesame (Sesamum indicum L.) is an ancient oilseed crops cultivated in semi-arid Tropics and sub tropics regions in India. It play an important role in the oilseed economy throughout the world. The fungal disease root and stem rot caused by M. phaseolina (Tassi) Goid is the most important disease and is widely, distributed in sesame growing region. The pathogen attacks plant at all growth stages. Due to soil borne nature practically no effective field control and no source of resistant is available. So for the presented investigation entitled field experiment was also conducted with three date of sowing using susceptible cultivars VRI-1.Root and stem rot intensity was higher in all the three date of sowing. Correlation of disease with the weather parameter indicate that root and stem rot disease was negatively relationship with all weather parameter viz, maximum temperature, minimum temperature, rain fall (mm), no of rainy days, relative humidity (morning and evening).