Record Details

Rice Weed Management in the Asian-Pacific Region: An Overview

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/10210/
 
Title Rice Weed Management in the Asian-Pacific Region: An Overview
 
Creator Rao, A N
Chandrasena, N
Matsumoto, H
 
Subject Cereals
Rice
Weed Science
Asia
 
Description Rice yields increased several folds in many areas of the Asian-Pacific region, since
the mid-1960s, due to introduction and adoption of new rice cultivars and associated
improved production methods including weed management. The most commonly
used weed control methods in rice include manual weeding, land preparation, cultural
methods, such as manipulating the cultivar grown and planting density, water level
management, herbicide application, crop rotations, crop residues use and
management. Over the years, these methods have been integrated with preventative
weed control (such as clean seeds and clean equipment) and where possible,
biological control. Herbicide resistance in rice weeds, shifts in weed floras and
climate change pose new and major challenges in the Asian-Pacific region for
increasing rice productivity further in a sustainable manner. Despite the research,
allelopathic rice accessions or cultivars are yet to make a major impact in rice weed
management in on-farm situations. Over the past 50-60 years, a large corpus of
knowledge has been developed in Asian-Pacific region on both constraints and
opportunities in rice cultivation, including those posed by weeds. Direct-seeding
of rice is now favoured over transplanting by farmers in many countries. To sustain
productivity and increase rice yields, weed scientists in the region must build on
the existing knowledge of ecological and biological attributes of rice weeds and
apply well established principles of weed management. Whilst herbicides may
continue to play an important role, particularly, in managing specific and serious
problems, such as ‘weedy rice’, over-reliance on herbicides is not likely to be
beneficial to the Asian-Pacific region in the long run. Instead, attention should be
on developing holistic, country-specific, or region-specific rice weed management
packages, integrated with cultivar-specific recommendations. The success of better
management of weeds in rice-field will depend on recognizing that weeds are but
only one major constraint to increasing rice yields and on applying natural resource
management principles, with appreciation of the broader socio-economic factors
that influence farmers decision making.
 
Publisher Asian-Pacific Weed Science Society (APWSS)
 
Contributor Rao, A N
Matsumoto, H
 
Date 2017
 
Type Book Section
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/10210/1/AN%20Rao%20AP%20Region%20Chapter%201.pdf
Rao, A N and Chandrasena, N and Matsumoto, H (2017) Rice Weed Management in the Asian-Pacific Region: An Overview. In: Weed management in rice in the Asian-Pacific region. Asian-Pacific Weed Science Society (APWSS), Hyderabad, pp. 1-41. ISBN 978-81-931978-4-4