Assessment of Annual Leguminous Forage Varieties in Cotton Inter cropping: Evaluating Green Fodder Yield and Dry Matter Production

Abstract

Intercropping is an agronomic technique and is considered to be an effective and potential mean of increasing crop production per unit area and time (Ahmad and Anwar 2001). Legume intercrops are included in cropping system due to their ability to reduce soil erosion, improving land productivity through soil amelioration, suppress weeds and fix nitrogen. Intercropping cotton is significant because of higher profit and stabilized yield advantage, especially under adverse climatic conditions (Aladakatti et al., 2011). In this aspect, intercropping of short duration legumes in cotton has no adverse effect on cotton performance but an additional yield of legume makes the system more profitable. Rochester et al. (2001) studied the contribution of legume crops such as faba bean (Vicia faba), field pea (Pisum sativaum) and lab-lab (Lablab purpureus) on nitrogen fertility of cotton cropping system. The present study was undertaken in order to develop a compatible, short duration legume fodder and to assess the feasibility of different annual legume fodders for higher green fodder production. The field experiments were conducted in Krishi Vigyan Kendra, Veterinary College and Research Institute Campus, Namakkal, under irrigated condition, during July-August of 2021-22 and 2022-23. Experimental procedures were adopted to analyze the effects of various fertilizer levels on green fodder yield of various leguminous fodder crops viz., fodder cowpea (var. CO (FC)-8), mothbean (var. TMV (mb)-1), horse gram (var. Paiyur-2) and pillipesera. The results indicated that green fodder yield recorded at harvest stage (55 Days After Sowing (DAS)) was influenced by various fertilizer levels of Bt cotton. With respect to green fodder yield fodder cowpea (17407 and 14431 kg ha-1), horse gram (4439 and 4662 kg ha-1), moth bean (10041 and 10010 kg ha-1) and pillipesera (3066 and 2720 kg ha-1) recorded higher yield with application of 150% RDF and it was followed by 125% RDF and 100 RDF during first- and second -year study. Similarly, application of 150% RDF (F3) recorded more dry matter production (DMP) value, for all leguminous fodder crops during first (184.8, 305.6 and 452.7 kg ha-1) and second year study (169.9, 291.2, 450.2 kg ha-1) at all growth stages viz., 20, 40 DAS and at harvest stage, respectively.