​Vermiwash Prepared from Different Combination of Organic Sources to Improve Growth and Yield of Blackgram [Vigna mungo (L.) Hepper] for Organic Agriculture

Abstract

Background: Black gram (Vigna mungo) is one of the most important pulse crops grown throughout the country. It is hardy crop and fixes nitrogen in soil. Organic black gram fetch higher price in market i.e., Rs. 175 whereas other receive Rs. 120. Vermiwash, is one among the organic manures which has high potential to increase the crop growth and yield. Thus, present study aims to evaluate the influence of vermiwash prepared from different combination of organic sources on growth and yield of black gram. Methods: The field experiment was conducted during kharif, 2018 at Organic Farming Unit, Rajasthan College of Agriculture, Udaipur, with nine treatments [T1= vermiwash from 100% cow dung, T2= vermiwash from 100% buffalo dung, T3= vermiwash from 50% cow dung + 25% dry farm waste + 25% green farm waste, T4= vermiwash from 50% buffalo dung + 25% dry farm waste + 25% green farm waste, T5= vermiwash from 90% green waste incubated with 10% cow dung, T6= vermiwash from 90% green waste incubated with 10% buffalo dung, T7= vermiwash from 90% dry waste incubated with 10% cow dung, T8= vermiwash from 90% dry waste incubated with 10% buffalo dung and T9= water spray (control)] and were replicated thrice in Randomize Block Design. Result: The result of experiment revealed that the application of vermiwash from 100% cow dung significant influence towards growth parameters and yield attributes thus achieved maximum seed yield, haulm yield and B:C ratio (2.3). On the basis of field performance, it may be concluded that the treatment T1(top dressing in two equal split application at the rate of 10% at initiation of flowering and 15 days after 1st spray) may be recommended as a better organic package of blackgram.