In Gujarat, farmers face a significant threat to their maize crops from the four-spotted army worm (Mythimma separata). This pest has caused major damage to crops across India, particularly during the Kharif and Rabi seasons. The state government is committed to assisting farmers in managing this pest to ensure good yield and income.
To combat the four-spotted army worm effectively, the Directorate of Agriculture has recommended several integrated pest management strategies. These steps are crucial for farmers to protect their crops from this destructive pest.
Here are the recommended actions:
1. **Light Traps**: Set up one light trap per hectare to attract and kill adult worms. This will help reduce their population significantly.
2. **Pheromone Traps**: Install 50 pheromone traps per hectare or 20 traps per acre. Change the lures every 40 days to ensure they remain effective.
3. **Manual Collection**: Handpick and destroy eggs and worms of different stages to reduce their numbers on crops.
4. **Non-Chemical Control**: Apply 5 grams of soil or sand around the base of plants 30 to 45 days after sowing to minimize damage from the pests.
5. **Powder Treatments**: At the onset of infestation, use 20 grams of Bacillus thuringiensis powder or 40 grams of Beauveria bassiana fungus powder mixed with 10 litres of water to spray on the plants.
6. **Natural Ingredients**: Use 500 grams of lime juice extract (5% solution) or 30 ml of neem oil mixed with water and a detergent powder to spray on the plants for effective control.
7. **Organic Insecticides**: Farmers practicing organic farming can use non-chemical insecticides like Brahmastra in a dilution of 1 to 1.5 litres per 100 litres of water.
8. **Pest Baits**: Mix 25 kg of pearl millet flour, 1 kg of jaggery, and 250 grams of Thiodicarb as bait. Apply this mixture at the first sight of pests and again 15 days later.
9. **Immediate Harvest**: If infestations are severe in fodder maize, it is advised to cut and feed to cattle. If pesticides have been used, wait for 30 days before feeding cattle.
10. **Local Pest Management**: If local pests are also an issue, use recommended chemical insecticides as advised by the agricultural university in the area.
It is crucial for farmers to follow the dosage instructions provided on the pesticide labels to ensure effective and safe pest management. The Directorate of Agriculture emphasizes that a systematic approach is key to overcoming the challenges posed by the army worm.
The army worm has a lifecycle that allows it to reproduce quickly, leading to rapid infestations. They lay eggs on leaves, which hatch into larvae that feed on the crops, causing significant damage. Farmers are urged to monitor their fields closely and take action at the first signs of infestation.
The government continues to support farmers with resources and information to combat these pests. By following the suggested management strategies, farmers in Gujarat can protect their maize crops and secure their livelihoods. With the right measures in place, they can reduce the impact of the army worm and achieve better yields this season.