(BLC) - Recently, rice pests have tended to develop strongly, and the development of pests and diseases has hidden complex factors. Authorities at all levels, professional agencies and farmers in Lai Chau city have implemented many measures to promptly prevent the emergence and development of rice pests and diseases.
This year’s crop, communes and wards in Lai Chau city planted about 510 hectares of rice, mainly mixed and aromatic varieties. The rice is in the stage of heading and flowering.
According to statistics from the City Agricultural Service Center, the rice area infected with pests is about 10 hectares (of which the heavily infected area is 7 hectares). Small leaf rollers cause damage scattered over the entire area, with an average damage density of 8-10 individuals/m2; high 20-25 individuals/m2, locally 30-40 individuals/m2. It is forecasted that new larvae will cause damage from mid-late July to early August. For bacterial stripe disease, the average damage rate is 2.5%, high 8.5% of leaves, locally 15-20%. Leaf blast disease, which mainly causes damage to Nghi Huong 305 varieties and non-straw rice, has an average damage rate of 3.5%, high 10.5%, locally 15%.
Rice fields are silvered by leaf rollers.
Pests and diseases appeared in Sung Phai and San Thang communes and Doan Ket and Dong Phong wards. The cause was determined to be the complicated weather with alternating rain and sunshine, high humidity, which are favorable conditions for pests to grow and develop. In addition, people sprayed pesticides slowly and inconsistently, making it difficult to control the spread of pests and diseases.
In previous years, Ms. Vang Thi May's family in Thanh Lap village (Doan Ket ward) planted high-quality hybrid rice, the rice grew well, Ms. May was happy, hoping for a good harvest to compensate for the hardships of working in the sun and rain. But recently, the entire rice area has been infected with diseases, making her worried and unable to sleep. Ms. May shared: Currently, the rice plants are forming ears but pests and diseases are developing rapidly, if we do not prevent them in time, it is difficult to avoid the risk of crop failure. Therefore, my family urgently sprayed pesticides with the hope that the results would be better.
Officers of the City Agricultural Service Center guide people on how to spray pesticides properly.
This season, Sung Phai commune planted about 400 hectares of rice, currently all the rice fields have formed ears; but the rate of disease infection is high. Taking advantage of the time when the weather had just cleared up after the rainy days, Ms. Ma Thi Ganh in Gia Khau 2 village (Sung Phai commune) went to the field to check the development of the rice plants. Ms. Ganh confided: Rice is the main source of income for my family, when the rice area was infected with pests, I was very worried. After being informed by the local government, a few days ago my family sprayed pesticides, but it rained continuously, so I went to the field to check again to have a timely solution.
Mr. Dao Manh Son - Deputy Director of the City Agricultural Service Center said: In order to promptly prevent the emergence and development of pests and diseases, avoid widespread spread and minimize damage caused by pests and diseases on the 2023 winter-spring rice area, we have propagated and instructed farmers on measures to prevent and control small leaf rollers, bacterial stripe disease, and rice blast disease such as checking field hygiene, clearing weeds around the banks, and applying fertilizer in a balanced and correct growth stage. Strengthen propaganda on wireless loudspeakers.
Farmers actively prevent rice pests and diseases.
Instruct farmers to use pesticides to prevent leaf roller disease such as: Cydansuper 250EC; Abagent 500WP; G8-thôn trang 96WG; Emacarb 75EC; Map Permethrin 50EC; Chlorferan 240SC; Pompom 11.6WG. For bacterial stripe disease, use pesticides such as: Rorai 21WP, Basu 250WP, Atanil 250WP, physan 20SL, Avalon 8WP, Totan 200WP. For leaf blast disease, use pesticides such as Bump650wp, FamycinUSA100WP, Daconil 75WP, Frothane 80WP.
Accompanying people in fighting the epidemic, the City Agricultural Service Center recommends that people do not fertilize too much nitrogen so that the leaves are green and soft, attracting worms to lay eggs and cause more damage. In addition, it is necessary to pay attention to the diseases of leaf blight and brown stripe that will arise and cause damage in the coming time. If the disease is found to be harmful in favorable environmental conditions, with showers, high humidity or a disease rate of 10% of leaves and branches, it is necessary to use chemicals for prevention.
Hopefully, with the efforts of the government, people and professional agencies, the work of preventing and controlling pests and diseases on rice plants will achieve high results, and the 2023 crop will yield the expected yield and output.
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