Weed Control Studies in Chickpea (Cicer Arietinum L.)

Abstract

An experiment entitled "Weed control studies in chickpea (Cicer arietinum L.)" was carried out to evaluate the efficacy of some post emergence herbicide in chickpea at Crop Research Center of S.V.P. University of Agriculture & Technology, Meerut (U.P.), during rabi season of 2009-10. Twelve treatments consisted three dose of Quizalopfop ethyl 5 EC (30, 40, 50 and 60 g ai.ha-1 ) and Imazethapyr 10 % SL (50, 75 and 100 g ai.ha-1 ) were compared with Pendimethalin 30 EC 1000 g.ai.ha-1 , Isoproturon 75 WP I 000 g.ai.ha-1 , Clodinafop I 5 WP 40 g.ai.ha-1 , two hand weeding and weedy check in Randomized Block Design with three replications. The soil of the experimental field was sandy loam in texture, neutral in reaction, low in organic carbon and nitrogen and medium in phosphorus and potassium. Objective of the study were: 1. To study the effect of herbicide on weeds as well as on chickpea. 2. To access the performance of chickpea under different treatments. 3. To assess the economic viability of treatments. The herbicide was applied at 20 DAS \Vith knapsack sprayer fitted with flat fen nozzle using 600 liter of \\'ater per ha. All the herbicide had marked influenced on weed density, dry weight, nutrient uptake by weeds, yield and yield attributes of crop along with growth indicators and quality of chickpea, except the lower dose of Quizalopfop ethyl 5 EC (30 and 40 g.ai.ha-1 ). Quizalopfop ethyl 5 EC@ 50 & 60 g ai.ha-1 and Imazethapyr 10% SL@ 75 &100 g ai.ha-1 were produced significantly higher yield than weedy and it was statistically at par to check Pendimithalin 30 EC I 000 g ai.ha-1 PE as well as two hand weeding. At this dose of these herbicides were more effective against grassy weed as compared to broad leave weeds. These treatment were also expressed superiority in weed reduction, nutrient utilization by crop, gross income, net return and B:C ratio. On the basis of experimental finding it can be concluded that post-emergence application of Quizalopfop ethyl 5 EC@ 50 & 60 g ai.ha-1 and Imazethapyr 10% SL@ 75 &100 g ai.ha- 1 can be used to control weeds in chickpea. These observation are based on the data, to get more precise information, it is suggested that the experiment should be repeated further on the same condition.