As an AI language model, I do not have personal experience, opinion, or view. However, I can provide you with an article on asking about control attack of wilt on onion crop.
Onion crop is a significant source of livelihood for millions of smallholder farmers worldwide. However, the crop is often threatened by the attack of fungal and bacterial diseases that can cause severe damage and loss to yield. Wilt is one such disease that attacks the onion crop, and it can be quite devastating if not managed early and effectively.
Wilt disease is caused by soil-borne fungal pathogens like Fusarium oxysporum, which can survive in the soil for several years even without the presence of a host plant. The fungus attacks the roots of the onion plant, depriving it of essential nutrients and water, leading to wilting, yellowing, and eventually death of the plant.
To control the attack of wilt disease on onion crop, it is essential to take proactive measures, such as:
1. Crop rotation: Crop rotation is a powerful strategy to combat soil-borne diseases like wilt. Farmers should avoid cultivating onions in the same field for more than a year. Instead, they should alternate onion crop with other unrelated crops like legumes, Brassica, maize, or sorghum, among others.
2. Pre-planting treatment: Farmers can treat their onion seeds with hot water at a temperature of 52°C for 25 minutes to eliminate fungal contamination. Seed treatment with Trichoderma harzianum can also be effective in suppressing fungal pathogens.
3. Soil sterilization: Farmers can sterilize the soil to eliminate the fungal population using different methods like solarization, fumigation, or steam sterilization.
4. Fungicides: In severe cases of wilt disease, farmers can apply fungicides like Carbendazim, Thiophanate-methyl, or Tridemorph, among others. However, farmers should follow the recommended application rate and adhere to safety guidelines.
5. Cultural practices: Farmers can adopt good cultural practices like proper drainage, spacing, weeding, and irrigation regimes that promote a healthy onion crop and reduce the risk of wilt disease.
In conclusion, wilt disease can be a significant setback to onion farmers, but with proactive measures and proper crop management practices, farmers can control the attack of the disease and safeguard their onion crop.