Weeds remain one of the biggest challenges for rice farmers. They compete with paddy plants for water, nutrients, sunlight and space. Farmers often spend significant time and money on manual weeding, especially when labour is difficult to find during the crop season. A recent ICAR-supported training programme in West Bengal focused on herbicide-tolerant rice, scientific weed management and quality paddy seed production as possible ways to address these challenges.
The programme was organised on August 29 at Sasya Shyamala Krishi Vigyan Kendra in Narendrapur. It brought together researchers from ICAR-Central Rice Research Institute, Cuttack, and ICAR-Agricultural Technology Application Research Institute, Kolkata. Scientists discussed how farmers can manage weeds scientifically while also improving their understanding of quality paddy seed production.
Why weeds can reduce rice production
Weeds begin competing with rice plants soon after crop establishment. If farmers do not manage them at the right stage, they can affect plant growth and reduce the resources available to the crop. Manual weeding can control the problem, but it requires labour at a time when many farmers may already face pressure from other agricultural activities.
The challenge has become more important as the availability and cost of farm labour change. Some farmers struggle to find workers during the critical weeding period. This creates interest in methods that can reduce dependence on manual work. The recent training focused on scientific weed management because farmers need to control weeds without creating new problems through the incorrect use of herbicides.
Herbicide-tolerant rice is designed to tolerate a specific herbicide treatment that would otherwise damage ordinary rice plants. This allows farmers to control certain weeds in the field without harming the crop when they follow the recommended method.
But farmers should not treat herbicide-tolerant rice as a simple solution for every weed problem. The technology needs careful management. The herbicide must match the approved rice technology, and farmers must follow the recommended dose and timing. Using the wrong product or repeatedly relying on the same method can create management problems.
The ICAR-supported programme aimed to improve farmers’ knowledge of herbicide-tolerant rice technology and scientific weed management. The focus was not only on using a new crop technology but also on understanding how the technology should be managed in the field.
Herbicides cannot replace field monitoring
Farmers still need to visit their fields regularly.
Different weeds can grow at different stages of the rice crop. Their growth may also depend on rainfall, soil conditions and water management. A farmer needs to identify the weed problem before deciding what action to take.
Repeated use of the same herbicide can also create pressure that favours weeds able to survive the treatment. This is why weed management should not depend on one practice alone.
Farmers can combine suitable approaches based on local recommendations. These may include proper land preparation, timely crop establishment, water management, manual removal where needed and approved herbicide use. The aim should be to manage weeds effectively rather than relying automatically on repeated spraying.
Quality seed also affects the crop from the beginning
The West Bengal programme also focused on paddy seed production.
Seed quality can affect crop establishment and the uniformity of plants in the field. Farmers producing seed need to follow recommended practices because seed meant for planting must meet different quality requirements from grain grown only for consumption.
Quality seed production can also create opportunities for farmers who have access to technical support and organised markets. But seed production requires planning.
Farmers need to maintain crop purity, follow recommended isolation and management practices where required, and ensure proper handling after harvest. The training aimed to build farmer knowledge on these aspects of paddy production.
A new rice technology should be judged by more than its expected yield.
Farmers need to calculate the full cost of production.
Before adopting herbicide-tolerant rice or changing their weed-management system, farmers should consider:
- Seed cost
- Herbicide cost
- Labour savings
- Application cost
- Local weed pressure
- Water availability
- Expected market for the crop
A technology that reduces labour needs may still increase other costs. The final decision should depend on whether the overall farm economics improve under local conditions.
Farm demonstrations can help farmers compare a new practice with their existing method before using it across their entire land.
Farmers should follow local recommendations
Rice farming practices can vary between regions. A method suitable for one district may not work in the same way elsewhere. Soil type, rainfall, irrigation and the weed species present in a field can all affect the results.
Farmers interested in herbicide-tolerant rice should therefore seek advice from agricultural scientists, Krishi Vigyan Kendras or their state agriculture department before adopting the technology. They should also avoid purchasing seed or herbicides from unreliable sources.
The August 29 programme in Narendrapur shows growing interest in technologies that can reduce farm labour pressure while helping farmers manage crop problems more scientifically. For rice farmers, the key question is not whether a new technology exists. The more important question is whether it suits their field.
Herbicide-tolerant rice may offer an option for some farmers, but good results will depend on correct seed choice, proper weed identification and careful use of the recommended management practices.