Scheduling of fungicidal sprays for the management of powdery mildew of cumin

Abstract

An experiment was conducted during rabi season in 2007-08 and 2008-09 to find out appropriate
Scheduling of fungicidal sprays for the management of powdery mildew of cumin. Significant differences
were observed amongst various fungicidal spray schedules for disease intensity, yield, volatile oil and
1000-seed weight. The treatments with two sprays of difenaconazole @ 0.05 per cent and two sprays
of wettable sulphur @ 0.2 per cent were at par with three sprays of difenaconazole @ 0.05 per cent and
wettable sulphur @ 0.2 per cent with respect to per cent disease intensity, seed and oil yield and 1000-
seed weight. Thus, two sprays of difenaconazole (0.05 %) proved most effective in reducing disease
and recorded 19.05 per cent disease intensity with higher reduction in disease (67.24 %) over control
and also gave higher yield (522.8 kg h -1), volatile oil (4.11 %) and 1000-seed weight (2.62 g). But on the
basis of economic analysis, two sprays of wettable sulphur @ 0.2 per cent from disease onset and
thereafter at an interval of 17 days with the higher profit (Net ICBR 1:10.86) was observed best to two
sprays difenaconazole @ 0.05 per cent (Net ICBR 1:0.57) with respect to disease intensity (21.02 %) and
overall yield followed by three sprays of of wettable sulphur @ 0.2 per cent (Net ICBR 1:7.18), two
sprays of hexaconazole @ 0.05 per cent (Net ICBR 1:6.64), two dusting of sulphur (Net ICBR 1:6.06) and
mancozeb 0.25 per cent.