INFLUENCE OF SOWING TIME AND SPACINGS ON THE SEVERITY OF IMPORTANT DISEASES OF RAPESEED-MUSTARD

MANMOHAN

Department of Plant Pathology

CCS, Haryana Agricultural University, Hisar-125004 (Haryana), India

(Email: mmbaghel@gmail.com)

(Received: 9 August, 2013 Accepted: 25 September, 2013)

SUMMARY

White rust, Alternaria blight and powdery mildew are major diseases which are seriously affecting foliage and pods in the Indian mustard. The present investigation was carried out in field to investigate the effects of dates of sowing and spacings on the diseases development in two cultivars varuna and RH-9801 of Indian mustard. The disease intensity of white rust on leaves in relation to both varieties (Varuna, RH-9801), both spacing and four dates of sowing increased with delay in dates of sowing. Alternaria bight intensity on leaves and pods decreased with delay in dates of sowing. However the powdery mildew intensity on leaves and pods increased with delay in dates of sowing.

Key words : White rust, Alternaria blight, powdery mildew, sowing time, spacing, rapeseed-mustard

Forage Res. 38 (4) March 221-224