1Department of Plant Pathology, Narendra Deva University of Agriculture & Technology, Kumarganj, Faizabad-224 229, Uttar Pradesh, India
2Krishi Vigyan Kendra, C. S. Azad University of Agriculture & Technology, Daleepnagar, Kanpur Dehat-209204, Uttar Pradesh, India
3Department of Mycology & Plant Pathology, Krishi Vigyan Kendra, Institute of Agricultural Sciences, Banaras Hindu University, Rajiv Gandhi South Campus, Varanasi-231001, Uttar Pradesh, India
*Email: ajkumar87@rediffmail.com
Online published on 15 December, 2016.
Most economical schedule was T3 i.e., spray with Fenamidone @ 0.2% at disease initiation stage and 2nd spray of Mancozeb @ 0.25% followed by Mancozeb @ 0.25% at 15 days intervals was found most effective in controlling the severity of early blight and increasing tuber yield in comparison to other treatments and proved to be most economical with higher benefit cost ratio of 1: 6.59 and1: 6.85 in year 2012–2013 and 2013–14, respectively. The highest benefit cost ratio was recorded in the plots treated with Fenamidone @ 0.2% at disease initiation followed by two more spray of Mancozeb @0.25% at 15 days intervals. It was found superior with same fungicidal schedules in both years. All other treatments with alteration were also found beneficial in respective order of both years.
Fungicides, BC ratio, Yield, Economical
