Nitrogen Uptake and Quality Parameters in Groundnut [Arachis hypogaea (L.)] Influenced by Different Weed Management Practices under Arid Zone of Rajasthan, India
Priyanka *
Department of Agronomy, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur-313001, Rajasthan, India.
M. L. Mehriya
Department of Agronomy, Agricultural Research Station, Mandor, Agriculture University, Jodhpur, Rajasthan-342304, India.
L. Netajit Singh
Department of Agricultural Statistics, Agriculture University, Jodhpur, Rajasthan-342304, India.
Mamata
Department of Agronomy, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur-313001, Rajasthan, India.
*Author to whom correspondence should be addressed.
Abstract
The field experiment was conducted at Agricultural Research station, Mandor, Agriculture University, Jodhpur during kharif, 2019 to evaluate nitrogen uptake and quality parameters as influenced by different weed management practices in kharif groundnut. The experiment was laid out in randomized block design (RBD) with thirteen treatments of replicated thrice. Results revealed that weed-free treatment found significantly higher total nitrogen uptake by crop, protein content in kernel, oil out-turn and lowest amount of nitrogen removal by weeds compared to weedy check. Among the herbicidal treatments, application of pendimethalin + imazethapyr at 1.0 kg/ha + one manual weeding at 30 DAS recorded significantly higher total nitrogen uptake by crop (240.8 kg/ha), protein content in kernel (25.8%), oil out-turn (1214.7 kg/ha) and lowest amount of nitrogen removal by weeds (0.4 kg/ha) which was closely followed by pendimethalin at 1.0 kg/ha (PE) + imazethapyr at 75 g/ha 20 DAS, pendimethalin at 1.0 kg/ha (PE) + one manual weeding at 30 DAS and pendimethalin + imazethapyr at 1.0 kg/ha (PE) + quizalofop-p-ethyl at 50 g/ha at 20 DAS.
Keywords: Groundnut, herbicides, uptake, quality parameters, weed management