Acaricidal composition containing cyenopyrafen and spirotetramat

Abstract

The invention discloses an acaricidal composition containing pyrenzafen and spirotetramat and the application thereof. The effective active ingredients are composed of the first active ingredient pyretafen and the second active ingredient spirotetramat. The weight ratio of the active ingredient to the second active ingredient is 50:1-1:50, and the sum of the contents is 1%-65% of the total weight of the composition. The composition can be formulated into agriculturally acceptable suspensions, microemulsions, water emulsions, dispersible oil suspensions, emulsifiable concentrates, wettable powders, and water-dispersible granules. The composition of the present invention is reasonable, and has good effect on apple claw mite, two-spotted spider mite, citrus red spider mite and cinnabarinus spider mite, and its acaricidal effect is not a simple superposition of the activities of each component. Compared with the existing single preparation, In addition to having a significant acaricidal effect, it also has a significant synergistic effect, reduces the dosage of the drug, and is safe for crops.

Description

technical field

[0001] The invention relates to an acaricidal composition, which is composed of a first active ingredient, pyretafen, a second active ingredient, spirotetramat, and an auxiliary agent, and belongs to the technical field of compound pesticides. Background technique

[0002] Harmful mites belong to the order Arachnida Acarina, and there are many kinds of them, which harm a variety of crops. Often gather on the back of the leaves, adults and nymphs use their mouthparts to pierce the leaves and suck the juice, which damages the chlorophyll of the plant and affects photosynthesis. Affected leaves often have off-white dots or white plaques, and some cause cell proliferation in the damaged part, making the leaves protrude in the shape of galls or galls, or the leaves are curled and shrunk. Leaf fall causes plant death. In addition, many pest mites transmit plant viral and fungal diseases. Agricultural pest mites are one of the obstacles to agricultural producti...

Examples

Embodiment 1

[0044] Take by weighing 100 grams of pyridofen, 200 grams of spirotetramat, 42 grams of phenylethylphenol polyoxyethylene ether phosphate, 32 grams of sodium lignosulfonate, 6 grams of bentonite, 3 grams of xanthan gum, 35 grams of Urea, 2 grams of benzoic acid, 12 grams of hexanol, and deionized water are added to 1000 grams by weight. The above raw materials are mixed, dispersed at high speed for 30 minutes, and sanded with a sand mill to a particle size of D 90 After the thickness is less than 10 μm, a 30% suspension concentrate of pyrazafen and spirotetramat was prepared.

Embodiment 2

[0046] Take by weighing 250 grams of pyridofen, 150 grams of spirotetramat, 55 grams of sodium alkyl polyoxyethylene ether sulfonate, 15 grams of alkylphenol formaldehyde resin polyoxyethylene ether, 8 grams of magnesium aluminum silicate, 26 grams of ethyl alcohol Diol, 2 grams of benzoic acid, 18 grams of butanol, and deionized water are added to 1000 grams by weight. The above raw materials are mixed, dispersed at high speed for 30 minutes, and sanded with a sand mill to a particle size of D 90 After the thickness is less than 10 μm, a 40% suspension concentrate of pyrazafen and spirotetramat was prepared.

Embodiment 3

[0048] Weigh 150 grams of pyridofen, 100 grams of spirotetramat, 45 grams of sodium alkyl polyoxyethylene ether sulfonate, 14 grams of alkylphenol formaldehyde resin polyoxyethylene ether, 6 grams of magnesium aluminum silicate, 28 grams of ethyl alcohol Diol, 3 grams of benzoic acid, 16 grams of butanol, and deionized water are added to 1000 grams by weight. The above raw materials are mixed, dispersed at high speed for 30 minutes, and sanded with a sand mill to a particle size of D 90 After the thickness is less than 10 μm, a 25% suspension concentrate of pyrazafen and spirotetramat was prepared.

technical field

[0001] The invention relates to an acaricidal composition, which is composed of a first active ingredient, pyretafen, a second active ingredient, spirotetramat, and an auxiliary agent, and belongs to the technical field of compound pesticides. Background technique

[0002] Harmful mites belong to the order Arachnida Acarina, and there are many kinds of them, which harm a variety of crops. Often gather on the back of the leaves, adults and nymphs use their mouthparts to pierce the leaves and suck the juice, which damages the chlorophyll of the plant and affects photosynthesis. Affected leaves often have off-white dots or white plaques, and some cause cell proliferation in the damaged part, making the leaves protrude in the shape of galls or galls, or the leaves are curled and shrunk. Leaf fall causes plant death. In addition, many pest mites transmit plant viral and fungal diseases. Agricultural pest mites are one of the obstacles to agricultural producti...

Examples

Embodiment 1

[0044] Take by weighing 100 grams of pyridofen, 200 grams of spirotetramat, 42 grams of phenylethylphenol polyoxyethylene ether phosphate, 32 grams of sodium lignosulfonate, 6 grams of bentonite, 3 grams of xanthan gum, 35 grams of Urea, 2 grams of benzoic acid, 12 grams of hexanol, and deionized water are added to 1000 grams by weight. The above raw materials are mixed, dispersed at high speed for 30 minutes, and sanded with a sand mill to a particle size of D 90 After the thickness is less than 10 μm, a 30% suspension concentrate of pyrazafen and spirotetramat was prepared.

Embodiment 2

[0046] Take by weighing 250 grams of pyridofen, 150 grams of spirotetramat, 55 grams of sodium alkyl polyoxyethylene ether sulfonate, 15 grams of alkylphenol formaldehyde resin polyoxyethylene ether, 8 grams of magnesium aluminum silicate, 26 grams of ethyl alcohol Diol, 2 grams of benzoic acid, 18 grams of butanol, and deionized water are added to 1000 grams by weight. The above raw materials are mixed, dispersed at high speed for 30 minutes, and sanded with a sand mill to a particle size of D 90 After the thickness is less than 10 μm, a 40% suspension concentrate of pyrazafen and spirotetramat was prepared.

Embodiment 3

[0048] Weigh 150 grams of pyridofen, 100 grams of spirotetramat, 45 grams of sodium alkyl polyoxyethylene ether sulfonate, 14 grams of alkylphenol formaldehyde resin polyoxyethylene ether, 6 grams of magnesium aluminum silicate, 28 grams of ethyl alcohol Diol, 3 grams of benzoic acid, 16 grams of butanol, and deionized water are added to 1000 grams by weight. The above raw materials are mixed, dispersed at high speed for 30 minutes, and sanded with a sand mill to a particle size of D 90 After the thickness is less than 10 μm, a 25% suspension concentrate of pyrazafen and spirotetramat was prepared.

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