Updated Jun 10, 2019

Integrated weed management (IWM) for complex weed flora in rice, maize, and wheat

Part of CIMMYT

Integrated weed management (IWM) solutions for sustainability and drudgery reduction


Timothy j. Krupnik

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Stage 4: Transition to Scale

CSISA plays a targeted and catalytic role to support initial capacity and market development for IWM through training of trainers for agricultural input dealers and through social marketing campaigns.

Focus Areas:

Cultivation & Tools

Cultivation & ToolsSEE LESS

Implemented In:

Nepal, Bangladesh and India

Nepal, Bangladesh and IndiaSEE LESS

Countries Implemented In
Verified Funding


High yield losses and drudgery associated with manual weed control



Multiple tactics for efficiently reducing weed competition

Target Beneficiaries

Cereal crop farmers in South Asia

Innovation Description

Weed competition poses a binding constraint to yield and profitability for many farmers across South Asia. CSISA has worked to identify, improve, and validate integrative solutions including crop rotation, competitive cultivars and mechanical control along with safe and effective herbicides for complex weed flora.

Competitive Advantage

Multiple weed control tactics give improved options for different farmer types and reduce dependencies on single solutions that inadvertently increase weed problems
New Implemented CountriesCambodia, Laos, Myanmar

The Team Behind the Innovation

The Cereal Systems Initiative for South Asia (CSISA) is led by the International Maize and Wheat Improvement Center (CIMMYT) and implemented by a team of scientists and change-makers with the International Food Policy Research Institute (IFPRI) and the International Rice Research Institute (IRRI). Operating across South Asia, CSISA works to increase the adoption of resource-conserving and climate-resilient technologies and improves farmers’ access to markets and enterprise development.



Apr 2017
In The News
TITLEWeeding Out Yield Losses in South Asia
Nov 2015
New Country Implemented In
Oct 2014
New Country Implemented In
Oct 2014
New Country Implemented In

Supporting Materials