Blast in paddy crop is a fungal disease that affects rice plants during the reproductive stage, reducing both the quality and quantity of the yield. This disease is caused by the fungus Magnaporthe oryzae and is commonly found in areas with high humidity and temperatures. To avoid losses due to this disease, it is essential to implement appropriate control measures. In this article, we will discuss some control measures for blast in paddy crop.
1. Use resistant varieties: The first step in controlling blast in paddy crop is to plant resistant cultivars. There are many rice varieties that show resistance to blast disease. Cultivation of these varieties is necessary to minimize the risk of blast infection.
2. Avoiding high seeding density: Planting at a higher density can increase the risk of blast infection. High seeding density leads to the creation of a suitable microclimate for the pathogen, promoting the spread of the disease. Therefore, planting at lower densities can reduce the prevalence of blast disease.
3. Crop rotation: Crop rotation is also an effective measure to prevent blast disease. Planting different crops in the same area can reduce the number of pathogens in the soil, thus lowering the risk of blast infection. Growing legumes or vegetables can also improve soil fertility and reduce the risk of blast disease.
4. Timely sowing: Sowing rice crops on time is also crucial for controlling blast disease. Late sowing can increase the risk of infection since the plants are at their most vulnerable stage when the fungus is at its peak. Therefore, timely sowing can reduce the risk of blast disease.
5. Fungicides: In the case of a severe blast outbreak, it may be necessary to use a fungicide to control the spread of the disease. Some effective fungicides include Propiconazole, Difenoconazole, among others. However, this should be done only after consulting with experts, and its application should be according to the standard protocol.
6. Proper field management: Good field management can prevent severe outbreaks of blast disease. Practices like removing rice debris, avoiding soil compacting, and timely weeding can significantly reduce the risk of blast infection. Proper sanitation of the farm is essential as well.
Conclusion:
Blast disease is a severe problem for rice growers, causing a significant reduction in the yield of rice crops. However, implementing simple control measures can minimize the risk of the disease. A combination of cultural, biological, and chemical control methods are the most effective measures for controlling blast disease in paddy crop. We encourage farmers to follow the recommendations mentioned above and to consult experts if the severity of the disease is high.