After five kinds of highly toxic pesticides such as methamidophos were banned, experts recommended 17 pesticides, such as fipronil, that had undergone indoor screening, field trials, and large-scale demonstration as the first batch of alternative varieties, which could be classified into control based on crop classification. Rice, wheat, cotton, vegetable pests:
1. Control of rice stem borer, the varieties that can act:
(1) fipronil. The recommended dosage is 1.5-2.5 g active ingredient/mu. The technical points to be used are: spray application during the hatching period of the eggs, and keep the water layer or water-free layer in the field. Since fipronil is highly toxic to bees and aquatic organisms, it is highly toxic to particular shrimps and crabs. Therefore, it should not be used in bee culture areas and shrimp and crab breeding areas. If it is to be used, it is recommended that fipronil be used after drainage. After using fipronil, rice fields should not be discharged into fish ponds and river channels.
(2) fipronil + trichlorfon (1:49). The recommended dosage is 50 grams of active ingredient/mu. The technical point of use is: spraying the pesticide during the hatching period of the eggs, and it is better to keep the water layer in the field. Do not use it in shrimp and crab farming areas.
(3) Triazophos. The recommended dosage is 30 to 40 grams of active ingredient/mu. The technical point of use is: spray application during the hatching period of the eggs. Due to the long residual period of triazophos, it has a stimulating effect on growth of rice brown planthopper. Therefore, it should be used before the heading stage of rice, and it is recommended to use it in early rice or in the first half of the year. It should not be used in areas where Scarabae is highly resistant to triazophos.
2. The rice stem borer can be used in the following varieties:
Chlorpyrifos. The recommended dosage is 40-50 g active ingredient/mu. The use of technology should be as follows: in the incubation period of Sanhua larvae hatching.
3. The following varieties can be used to control rice leaf roller:
Avermectin. The recommended dosage is 0.72 to 0.9 g active ingredient/mu. The use of technology should be as follows: spray application of the rice leaffolder larvae before the second instar, preferably in the egg hatching period.
4. Controlling rice brown planthoppers. The varieties that can be used are:
Buprofezin. The recommended dose is 7.5 to 12.5 grams of active ingredient/mu. The use of technology should be as follows: spray application at the initial stage of the brown planthopper, and it is best to keep the water layer in the field when spraying.
5, the control of rice white backed planthopper, can use the varieties are:
(1) buprofezin. The recommended dose is 7.5 to 12.5 grams of active ingredient/mu. The use of technology should be as follows: spray application at the initial stage of the brown planthopper, and it is best to keep the water layer in the field when spraying.
(2) Imidacloprid. The recommended dosage is 1 to 2 grams of active ingredient/mu. The use of technology should be as follows: spray application at the initial stage of brown planthopper.
Wheat Pest Control Alternative Medicine
For the control of wheat aphids, the following species can be used:
(1) Acetamiprid. The recommended dosage is 0.6-0.9 g active ingredient/mu. The technical point of use is: spray application at the early stage of the aphid in the wheat ear stage.
(2) Resistance to Wei Wei. The recommended dosage is 5.0 to 7.5 grams of active ingredient/mu. The technical point of use is: spray application at the beginning of the wheat seedling or ear blast.
(3) Cyhalothrin vinegar. The recommended dosage is 0.5-0.6 g effective ingredient/mu. The technical point of use is: spray application at the beginning of wheat seedlings. Because the chrysanthemum vinegar pesticides have a greater lethal effect on the natural enemies, it is not appropriate to use chloroacetal pesticides for controlling aphids at the ear stage.
Cotton Pest Control Alternative Medicine
1. For controlling cotton aphid, the varieties that can be used are:
(1) Imidacloprid. The recommended dosage is 1 to 2 grams of active ingredient/mu. The technical points for use are: spray application at the initial stage of cotton aphid, once for about 10 days.
(2) Acetamiprid. The recommended dose is 0.45 to 0.6 grams of active ingredient per mus. The technical points for use are: spray application at the initial stage of cotton aphid, once for about 10 days.
(3) Carbofuran. The recommended dosage is 6-9 grams of active ingredient per mu. The technical points for use are: spray application at the initial stage of cotton aphid, once for about 10 days.
2, control of cotton red spider, can use the varieties are:
(1) Anthrone. The recommended dosage is 2.25 to 3 grams of active ingredient/mu. The use of technical points for: cotton spider spider spray application.
(2) Abamectin. The recommended dosage is 0.27 to 0.36 g effective ingredient/mu. The use of technical points for: cotton spider spider spray application.
3, the control of cotton bollworm, can use the varieties are:
(1) Insecticide. The recommended concentration is 40 ppm. The technical point of use is: spray application of H. armigera eggs in the hatching period.
(2) Emamectin. It is recommended to use a dose of 0.4 to 0.6 grams of active ingredient per acre. The technical point of use is: spray application of H. armigera eggs in the hatching period.
Vegetable Pest Control Alternative Medicine
1. The following varieties can be used to prevent vegetable worms:
(1) Imidacloprid. The recommended dosage is 1.0 to 2.0 grams of active ingredient per acre. The technical point of use is: spray application at the beginning of the locust period.
(2) Acetamiprid. The recommended dose is 0.45 to 0.6 grams of active ingredient per mus. The technical point of use is: spray application at the beginning of the locust period.
2. To control vegetables and tobacco, the varieties that can be used are:
(1) Imidacloprid. The recommended dosage is 2.0g active ingredient/mu. The technical point of use is: spray application at the onset of tobacco powder.
(2) Bifenthrin. The recommended dosage is 0.75g active ingredient/mu. The technical point of use is: spray application at the onset of tobacco powder.
3, control Spodoptera exigua, the varieties that can be used are:
(1) Bromonitrile. The recommended dosage is 5.0g active ingredient/mu. The technical point of use is: spray application of Spodoptera exigua before 2nd instar.
(2) Furanofuranoate. The recommended dosage is 6.0 g active ingredient/mu. The technical point of use is: spray application of Spodoptera exigua before 2nd instar.
4. For the control of diamondback moth, the following species can be used:
(1) Methyl avidin. The recommended dosage is 0.15 to 0.25 g of active ingredient per mu. The technical point of use is to spray the pesticide before the hatching of the diamondback moth to the second instar larvae.
(2) fipronil. It is recommended to use a dose of 1.0 to 2.0 g of active ingredient per mu. The technical point of use is to spray the pesticide before the hatching of the small egg to the second larvae.
(3) Bromonitrile. The recommended dosage is 3.35 to 5.0g effective ingredient/mu. The technical point of use is to spray the pesticide before the hatching of the small egg to the second larvae.
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