Efficacy Assessment of Treatment Methods against Powdery Mildew Disease of Pea (Pisum sativum L.) Caused by Erysiphe pisi var. pisi

Ateet Maharjan^1, , Bhupendra Bhatta², Raju Prasad Acharya², Sagar G. C.² and Swati Shrestha²

¹Tribhuwan University (T. U.), Nepal

²Institute of Agriculture and Animal Science (IAAS)

Cite this paper

Ateet Maharjan, Bhupendra Bhatta, Raju Prasad Acharya, Sagar G. C. and Swati Shrestha. Efficacy Assessment of Treatment Methods against Powdery Mildew Disease of Pea (Pisum sativum L.) Caused by Erysiphe pisi var. pisi. World Journal of Agricultural Research. 2015; 3(6):185-191. doi: 10.12691/WJAR-3-6-1

Abstract

The experiment was conducted to find out the efficacy of different treatments against powdery mildew of pea (Erysiphepisi var. pisi) in Rampur, Chitwan, Nepal during Dec. 2014 to April 2015. Four treatments viz. Skimmed cow milk (250 ml/plot), Karathane (2 ml/L), Trichoderma (10⁷condia/ml) and Control (distilled water) were used as foliar spray on plants. Considering Disease severity (%), Disease control (%) and Total Area under Disease Progress Curve, Trichoderma was found to be effective than Skimmed cow milk and Control but was at par with Karathane, in controlling over Powdery mildew disease. Number of pods/plant and weight of grains/plant were observed highest in Trichodermawhich was followed by Karathane. There was no significant difference between treatments in case of weight of pods/plant and dry weight/plant. AUDPC/day value increased in control in different sprayings but AUDPC value/day initially increased and later decreased for Trichoderma, Karathane and skimmed cow milk. All the yield and yield attributing characters were negatively correlated with AUDPC but number of pods/plant and weight of pods/plant were positively correlated. Reduction in yield was also caused by infection of Rust (Uromycespisi) in field. Four foliar sprays of Trichoderma (10⁷condia/ml) or Karathane@ 0.2% at interval of 7 days may be the option for the management of powdery mildew in severe condition. Trichoderma can be alternative method for farmers to have eco-friendly management of Powdery mildew as Karathane has negative impact on human and plant health.

Keywords

pea, powdery mildew, Trichoderma, disease control

Copyright

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