After the state banned highly toxic pesticides, how do we deal with pest and disease control?

General News Jan 1, 1970By Sophie Bennett 0 views

Highly toxic pesticides refer to the toxicity of a pesticide, that is, the degree of its toxic effect on humans and livestock. In response, the state has banned quite a few highly toxic pesticides, but this has led many farming friends to ask: what about pest and disease control? In fact, after highly toxic pesticides are banned, there are still

Highly toxic pesticides refer to the toxicity of a pesticide, that is, the degree of its toxic effect on humans and livestock. In response, the state has banned quite a few highly toxic pesticides, but this has led many farming friends to ask: what about pest and disease control?

In fact, after highly toxic pesticides are banned, there are still alternative pesticides, for example:

(1) Rice pests

1. To control the rice striped stem borer, the varieties that can be used include:

(1) Chlorantraniliprole (Kangkuan). Apply once each 3-7 days before rice transplanting, at the suitable control period for the first generation of stem borers, at the suitable control period for the second generation of stem borers, and at the suitable control period for the third generation of stem borers; the control effect on the rice striped stem borer is good. For the pesticide concentration, either 20% Kangkuan at 10 mL/mu or 15 mL/mu can be used, with 15 mL/mu giving the best effect; the water volume is 50 liters/mu, with uniform spraying over the whole plant.

(2) Chlorantraniliprole? Thiamethoxam (Fuge). The recommended dosage is 8-12 grams per mu, sprayed for control at the peak hatching period of rice striped stem borer eggs and before the 3rd-instar peak of the rice leaf roller; the effect is remarkable, and it also has an obvious effect on the rice planthopper, making it the best pesticide for integrated control of rice stem borers and rice planthoppers.

(3) Triazophos. The recommended dosage is 30-40 g active ingredient/mu. The main technical points for use are: spray and apply at the peak hatching period of rice striped stem borer eggs. Because triazophos has a relatively long residual period and can stimulate the increase of the rice brown planthopper, it should be used before the rice heading stage, and is recommended for early rice or use in the first half of the year. It should not be used in areas where the rice striped stem borer has developed high resistance to triazophos.

2. To control the rice yellow stem borer, the varieties that can be used include:

(1) Chlorantraniliprole (Kangkuan). For the recommended pesticide concentration, either 20% Kangkuan at 10 mL/mu or 15 mL/mu can be used, with 15 mL/mu giving the best effect; the water volume is 50 liters/mu, with uniform spraying over the whole plant.

(2) Chlorantraniliprole? Thiamethoxam (Fuge). The dosage is 8-12 grams per mu, sprayed for control at the peak hatching period of rice striped stem borer eggs and before the 3rd-instar peak of the rice leaf roller; the effect is remarkable, and it also has an obvious effect on the rice planthopper, making it the best pesticide for integrated control of stem borers and rice planthoppers.

(3) Chlorpyrifos. The recommended dosage is 40-50 g active ingredient/mu. The main technical points for use are: apply at the peak hatching period of rice yellow stem borer eggs.

3. To control the rice leaf roller, the varieties that can be used include:

(3) Abamectin. The recommended dosage is 0.72-0.9 g active ingredient/mu. The main technical points for use are: spray and apply before the 2nd instar of rice leaf roller larvae, preferably at the peak hatching period of eggs.

4. To control the rice brown planthopper, the varieties that can be used include:

(1) Buprofezin. The recommended dosage is 7.5-12.5 g active ingredient/mu. The main technical points for use are: spray and apply at the initial outbreak period of the brown planthopper; it is best to maintain a water layer in the field when applying.

(2) Pymetrozine (Dingfeng). The recommended dosage is 20 grams. The main technical points for use are: spray and apply at the initial outbreak period of the brown planthopper; it is best to maintain a water layer in the field when applying.

5. To control the rice white-backed planthopper, the varieties that can be used include:

(2) Imidacloprid. The recommended dosage is 1-2 g active ingredient/mu. The main technical points for use are: spray and apply at the initial outbreak period of the brown planthopper.

(3) Pymetrozine (Dingfeng). The recommended dosage is 20 grams. The main technical points for use are: when using 25% pymetrozine WP to control the white-backed planthopper, when there are 1000-2000 insects per 100 hills, the recommended use is 25% pymetrozine 20 g/667 sq m. About 15 d after the first application, if the white-backed planthopper continues to migrate in and the number of insects in the field increases, a second application for control can be considered. Focus on uniform spraying on the middle and lower parts of the rice; when applying at the rice heading and flowering stage, first divide the rice into sections of 1.5-2 m in the field, leave walking paths, and then apply aimed at the lower part.

(2) Wheat pests

To control wheat aphids, the varieties that can be used include:

(1) Acetamiprid. The recommended dosage is 0.6-0.9 g active ingredient/mu. The main technical points for use are: spray and apply at the initial outbreak period of aphids at the wheat ear stage.

(2) Pirimicarb. The recommended dosage is 5.0-7.5 g active ingredient/mu. The main technical points for use are: spray and apply at the beginning of the peak period of wheat seedling aphids or ear aphids.

(3) Cyhalothrin. The recommended dosage is 0.5-0.6 g active ingredient/mu. The main technical points for use are: spray and apply at the beginning of the peak period of wheat seedling aphids. Because pyrethroid pesticides are highly harmful to natural enemies, they should not be used to control aphids at the ear stage.

(3) Vegetable pests

1. To control vegetable aphids, the varieties that can be used include:

(1) Imidacloprid. The recommended dosage is 1.0-2.0 g active ingredient/mu. The main technical points for use are: spray and apply at the beginning of the peak outbreak period of aphids.

(2) Acetamiprid. The recommended dosage is 0.45-0.6 g active ingredient/mu. The main technical points for use are: spray and apply at the beginning of the peak outbreak period of aphids.

2. To control vegetable tobacco whitefly, the varieties that can be used include:

(1) Imidacloprid. The recommended dosage is 2.0 g active ingredient/mu. The main technical points for use are: spray and apply at the beginning of the peak outbreak period of tobacco whitefly.

(2) Bifenthrin. The recommended dosage is 0.75 g active ingredient/mu. The main technical points for use are: spray and apply at the beginning of the peak outbreak period of tobacco whitefly.

3. To control the beet armyworm, the varieties that can be used include:

(1) Chlorfenapyr. The recommended dosage is 5.0 g active ingredient/mu. The main technical points for use are: spray and apply before the 2nd instar of the beet armyworm.

(2) Fufenozide. The recommended dosage is 6.0 g active ingredient/mu. The main technical points for use are: spray and apply before the 2nd instar of the beet armyworm.

4. To control the diamondback moth, the varieties that can be used include:

(1) Emamectin. The recommended dosage is 0.15-0.25 g active ingredient/mu. The main technical points for use are: spray and apply from the peak hatching period of diamondback moth eggs to before the 2nd instar of larvae.

(2) Chlorfenapyr. The recommended dosage is 3.35-5.0 g active ingredient/mu. The main technical points for use are: spray and apply from the peak hatching period of diamondback moth eggs to before the 2nd instar of larvae.

After the state banned highly toxic pesticides, how do we deal with pest and disease control?

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