Yen Thanh: Many summer-autumn rice areas are damaged by leaf rollers
(Baonghean.vn) - Through actual inspections in the fields of Yen Thanh district, many communes discovered that the third generation of leaf rollers was in the adult stage, about to grow into the fourth generation. The common density of leaf rollers was over 50 individuals/m2 of rice, in some places it was from 100 to 200 individuals/m2, in some places the density of leaf rollers was very high from 250 to 300 individuals/m2.
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| Leaf rollers eat all the chlorophyll causing white burn on rice leaves. |
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| Common density is 50 individuals/m2, in high places from 200-300 individuals/m2 |
In Hong Thanh commune, leaf rollers have spread over 310 hectares of summer-autumn rice. According to Mr. Phan Van Son - Vice Chairman of the Commune People's Committee, although previously, people had sprayed pesticides, including specific types such as Ammate 150SC, 30WDG, Takumi 20WG, Vitako 40WG... according to the recommended dosage of the agricultural sector. However, because this type of worm rolls the rice leaves and lies inside, it cannot be completely eradicated. Up to now, the third generation of worms is preparing to grow, the commune is actively monitoring closely with farmers to effectively prevent it. The most worrying thing is in mid-July, when the rice is forming panicles, if the leaf rollers grow strongly, it will significantly affect the yield of summer-autumn rice.
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| Farmers spray pesticides on leaf rollers. |
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| Agricultural extension officers in communes increase field visits and promptly advise people on pest control methods. |
Statistics of Yen Thanh District Agriculture Department, currently available¼The summer-autumn rice area (equivalent to more than 3,000 hectares) is threatened by leaf rollers. This type of worm eats all the chlorophyll, causing the rice leaves to burn white, affecting the photosynthesis and growth of summer-autumn rice. In addition, some areas are also damaged by brown planthoppers and white-backed planthoppers. In this situation, the Department of Agriculture sent staff to coordinate with communes to increase field visits, monitor weather and pest developments to have effective prevention solutions, and protect the crop.
Nguyen Son
