Hai Duong recommends farmers to prevent rice pests and diseases in rainy weather

thong-nhat-phún-thuoc.jpg — Farmers in Thong Nhat commune (Gia Loc) spray pesticides on rice using machines.

Recently, farmers in Hai Duong have focused on spraying pesticides on rice leaf rollers. However, because the density of this worm is higher than the average of the same period in many years, in some areas of very good rice, young rice, near villages, near high-pressure lamps... the density of leaf rollers is still quite high and there is a risk of reducing rice yield.

Meanwhile, since the night of May 1st, the province has been experiencing frequent rains and high humidity. These are favorable conditions for leaf rollers, brown planthoppers, white-backed planthoppers, rice blast, bacterial leaf blight, and bacterial stripe disease to continue to increase and cause damage to rice plants.

To limit damage caused by pests to rice plants, the Department of Crop Production and Plant Protection (Department of Agriculture and Rural Development of Hai Duong) requested localities to direct farmers to strengthen monitoring and pest control.

For small leaf rollers, urgently spray rice areas with high density of worms (20 worms/m2 or more) with pesticides containing active ingredients such as Isocycloseram, Indoxacarb, a mixture of Indoxacarb with Emamectin benzoate or Chlorfenapyr.

For brown planthoppers and white-backed planthoppers, spray areas with a density of 2,000 planthoppers/m2 for unflowered rice areas and 1,000 planthoppers/m2 for flowered rice areas with pesticides containing the active ingredients Nitenpyram, Dinotefuran, Imidacloprid, or a mixture of Nitenpyram and Pymetrozine. It is necessary to maintain water in the field when spraying to control planthoppers.

For rice blast disease, when the rice has reached about 5% of the flowering stage, spray the areas planted with susceptible rice varieties (glutinous rice, fragrant rice, BC 15, TBR225) with pesticides containing the active ingredients Fenoxanil, Tricyclazole, or a mixture of Fenoxanil and Kasugamycin. Do not use pesticides containing the active ingredient Isoprothiolane, especially those in the form of oil emulsion (EC), to spray to prevent neck blast disease.

For bacterial leaf blight and bacterial streak disease, spray pesticides promptly on rice fields that have begun to be infected (disease rate 5%) or proactively spray immediately after thunderstorms on areas planted with susceptible rice varieties (Bac Thom No. 7, TBR225, Dai Thom). It is recommended to use pesticides containing the active ingredients Bronopol, Streptomycin sulfate, Kasugamycin, Bismerthiazol for preventive spraying.

Farmers need to follow the "4 rights" principle and safety measures when spraying pesticides. On hot days, spraying pesticides should be done in the late afternoon. If it rains after spraying, spray again immediately after the weather clears up to ensure safety. Collect pesticide packaging after spraying and store it in the designated place.

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