Effect of integrated nutrient management and weed control practices on weeds, growth and yield in groundnut
*1G. Mohanraj, 1R. Krishnamoorthy, 2R. Raman and 2S. Kandasamy
Department of Agronomy, Faculty of Agriculture, Annamalai University, Annamalai Nagar – 608002 (India) *1Corresponding Author: uzhavanmohan@gmail.com
ABSTRACT
The field experiments were made in irrigated groundnut to optimize the integrated nutrient and weed management practices for augmenting groundnut productivity at farmers field Sananandal village, Tiruvannamalai District, Tamilnadu, India. The soil of the experimental site was sandy clay loam in texture with pH of 7.11, organic carbon of 0.37% having available soil nitrogen, phosphorus and potassium of 214.4 kg ha-1, 8.28 kg ha-1 and 306.8 kg ha-1 respectively. Groundnut crop (var. JL-24) was sowing in kharif season taking four levels of nutrient management practice and seven level of weed management. The experiment was laid out in split plot design with three replications. The pooled data revealed that growth of groundnut and yield parameter were significantly higher in treatment of RDF + vermicompost @5 t ha-1 with pre emergence application of herbicide Diclosulam followed hand weeding at 30 DAS (M2S5) which recorded higher plant height (51.57 cm), LAI (4.61), dry matter accumulation (7909 kg ha-1), pod yield (2474 kg ha-1) and haulm yield (5168 kg ha-1)as an agronomically efficient , eco- friendly and economically viable technology for improving groundnut growth and yield parameter. This treatment (M2S5) combination registered lowest values for weed density, weed biomass and maximum weed control index and maximum values for growth, yield parameter and yield of groundnut.