Weed Dynamics in Rice (Oryza sativa L.) as Influenced by Different Establishment Methods and Nutrient Management Practices
Author: Rakesh Kumar, D.K. Singh, Gangadhar Nanda and Anupama Rawat
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Abstract
Weed flora in rice is affected by establishment methods and nutrient management practices. Effective weed management is the key to get higher rice yield which needs thorough investigation of weed flora. Therefore, a field experiment was conducted at Pantnagar, Uttarakhand during Kharif, 2018 and 2019 to study the effect of different establishment methods and nutrient management practices on weed dynamics of rice (Oryza sativa L.). Four establishment methods (transplanting, system of rice intensification, direct seeded rice and wet-direct seeded rice) and five nutrient management practices (100 % RDF, 75 % RDF + FYM (equiv. to 25 % N), 150 % RDF, RDF (LCC based N application) and RDF + 5 t FYM) were tested in split plot design with three replication using rice variety PR-121 as test crop. An area of 5 m2 out of 20 m2 was earmarked in each plot for studying weed dynamics and weed dry matter as influenced by different establishment methods and nutrient management practices. Results showed
Keywords
Rice, Establishment methods, Nutrient management practices, weed dry matter and weed density
Conclusion
From the results of the present investigation, it was concluded that among the establishment methods, system of rice intensification and among the nutrient management practices, 75 % RDF + FYM (equiv. to 25 % N) recorded the lowest weed density and dry weight of weeds. There is also a need to further study the weed dynamics under different establishment methods and nutrient management practices under different agro-ecological conditions
References
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How to cite this article
Kumar, R., Singh, D.K., Nanda, G. and Rawat, A. (2021). Weed Dynamics in Rice (Oryza sativa L.) as Influenced by Different Establishment Methods and Nutrient Management Practices. Biological Forum – An International Journal, 13(2): 680-687.