Evaluation of different organic nutrient solutions on the growth and yield of blackgram (Vigna mungo L.) under irrigated condition

Abstract

Organic cultivation eliminates the use of synthetic products to maximize the yields that can be produced rather sustains yield and enhances the soil health. Moreover, enhancing the productivity under organic cultivation is highly essential. Therefore, a trial was conducted at the backyard of the Department of Agronomy, PAJANCOA & RI, Karaikal to study the growth and yield of irrigated blackgram in coastal deltaic region, nutrient is supplied through foliar spray of different organic nutrient solutions. From the present pot culture experiment, it could be concluded that black gram can be grown organically by following the organic nutrient management practice of either applying Farm Yard Manure @12.5 t/ha in combination with foliar spraying of coconut butter milk solution @5% on 15, 30 and 45 DAS of Black gram or spraying of 5% coconut butter milk solution alone or spraying of 0.5% fish extract alone on 15, 30 and 45 DAS of black gram for increased productivity in the coastal region of Karaikal. However, owing to the additional cost involved in the basal application of farmyard manure recommended level @ 12.5 t/ha it is suggested that foliar spraying of either 5% coconut butter milk solution or 0.5% fish extract on 15, 30 and 45 DAS of Black gram may be followed as the best organic nutrient management practices for increased productivity of Black gram in the central region of Karaikal, Pondicherry, India.