Optimizing Productivity and Economics of Maize + Legumes Intercropping: A Study on the Impact of Natural and Organic Farming Practices

Abstract

Background: Excessive use of chemical fertilizers in a cropping system adversely affects the soil health and crop productivity. To ensure food security, nutritional balance and environmental sustainability, a shift towards eco-friendly organic farming based agricultural systems was imperative. But it also poses challenges for small farmers who owe a small number of animals and they need to purchase bulk organic manures. Zero Budget Natural Farming (ZBNF) emerges as an alternate and advocate for low-input, climate-resilient practices which include beejamrit, jeevamrit, achhadana and whapasa. With the aim of increasing the production of the crops per unit area in the present study, different intervals (14, 21 and 28 days) of jeevamrit under natural farming plots and matka khad (30 days interval) under organic farming plots were tested in different maize based intercropping systems. Methods: A field experiment was conducted during kharif 2020 and 2021 at the Zero Budget Natural Farm (ZBNF), Department of Organic Agriculture and Natural Farming, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur. The experiment was comprised of thirteen treatments which were tested in randomized block design with three replications. Result: Among different treatments significantly higher values of yield attributes and yield of maize were recorded under maize + lobia and jeevamrit spray at 14 days interval during kharif 2020 and maize + soybean and jeevamrit spray at 14 days interval during kharif 2021. In case of economics, higher gross returns, net returns and benefit cost ratio were recorded under maize + soybean and jeevamrit spray at 14 days interval during kharif 2020, whereas during kharif 2021, maize + soybean and matka khad spray at 30 days interval resulted in the highest returns.