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Phytosociological studies of weeds associated with rice in Ri-Bhoi district of Meghalaya

Indian Agricultural Research Journals

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Title Phytosociological studies of weeds associated with rice in Ri-Bhoi district of Meghalaya
 
Creator John, Chris
Ram, Vishram
Panda, Sushree
Pusparani, Ngangbam
 
Subject Paddy weed communities
phytosociology
importance value index
density
diversity
species richness
 
Description Rice-based cropping systems are predominant in Meghalaya, India, comprising rice-potato, rice-mustard, rice-pea and rice monocropping systems. In areas that have shifted to cultivating cash crops, rice has supplanted the consumption of millet and maize as the principal staple. Thus, paddy-based weed assemblages are of significant importance in maximizing grain yields. Characterization and descriptive analysis of weed communities in crops can be brought about by phytosociological studies. Knowledge of the relative importance of spatial and temporal variables, environmental conditions and management practices as filters for weed assemblages will prove to be useful in putting together an effective decision support system for their management. Through this comparative survey of 66 paddy fields, distributed homogenously throughout Jirang, Umling and Umsning blocks of Ri-Bhoi, an attempt has been made to study the weed vegetation associated with paddy in the Ri-Bhoi district of Meghalaya, in order to assess the effects of agricultural intensification on the diversity, structure and composition of weed communities. Jirang block recorded the maximum weed diversity, followed by Umsning and Umling blocks. Understanding the connections between weed species and landscape elements is necessary for developing alternative weed management strategies.
 
Publisher Association of Rice Research Workers
 
Date 2023-12-30
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Identifier https://epubs.icar.org.in/index.php/OIJR/article/view/146935
 
Source ORYZA-An International Journal of Rice; Vol. 60 No. 04 (2023): October-December; 603-614
2249-5266
0474-7615
 
Rights Copyright (c) 2023 Association of Rice Research Workers
http://creativecommons.org/licenses/by/4.0