Plant Disease Research

Pea rust (Uromyces pisi) is an important constraint to pea production in the region. An experiment was conducted at Regional Research Station, Gurdaspur during Rabi, 2010–11 to control the pea rust disease with foliar sprays of new strobilurin fungicides viz. Amistar and triazoles viz. Score (difenoconazole) and Tilt (propiconazole) in different combinations. In the present studies, a very significant disease control of 81.8% was obtained when two sprays of Score @0.1% were given at 20 days interval followed by Score @0.05% (66.5%). The minimum disease severity of 15.05% was observed with Score @0.1% over control plots. The disease severity was 58.8% when three sprays of Indofil-M-45 @0.2% were given at 10 days interval. There was a significant effect on the grain yield also and the highest 1000 grain weight of 174.0 g was obtained with Score @0.1% as compared to 12.3g in the control plots, resulting in an increase of 41.3% in grain weight over the control. In addition, the green pods were available for about more than 15 days over control plots.