Weed Management in Clusterbean under the Application of Different Agrochemicals and Phosphorus Levels

Krishna Kanwar *

Department of Agronomy, Sri Karan Narendra Agriculture University, Jobner, Rajasthan- 303329, India.

S. S. Yadav

Department of Agronomy, Sri Karan Narendra Agriculture University, Jobner, Rajasthan- 303329, India.

*Author to whom correspondence should be addressed.


Abstract

Among the Kharif legumes clusterbean (Cyamopsis tetragonoloba L. Taub) is important crop and popularly known as “Guar” in India. A field experiment was conducted during Kharif 2013 at Agronomy Farm, S.K.N. College of Agriculture, Jobner, Jaipur (Rajasthan) to evaluate the weed management in clusterbean under the application of different agrochemicals and phosphorus levels. The treatments comprising 6 weed control treatments (Weedy check, one hand weeding at 20 DAS, two hand weeding at 20 and 40 DAS, pendimethalin at 0.75 kg/ha, imazethapyr at 100 g/ha and fenoxoprop-p-ethyl at 70 g/ha and four levels of phosphorus (0, 20, 40 and 60 kg/ha) assigned to main and sub plots of spilt plot design, respectively and replicated thrice. Results showed that HW twice at 20 and 40 DAS and pre emergence application of imazethapyr at 100 g/ha resulted significant reduction in weed density and weed dry matter in comparison to most of the treatments. Results further indicated that application of 60 kg P2O5/ha in clusterbean recorded the highest density and dry weight of weeds at all the stages. Maximum weed control efficiency was recorded under two hand weeding at 20 & 40 DAS.

Keywords: Hand weeding, pre emergence, phosphorus, weed density and dry weight


How to Cite

Kanwar , K., & Yadav , S. S. (2023). Weed Management in Clusterbean under the Application of Different Agrochemicals and Phosphorus Levels. International Journal of Environment and Climate Change, 13(8), 537–543. https://doi.org/10.9734/ijecc/2023/v13i81981

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