Pirimicarb

Pure product is white crystalline solid. m.p. 118 ～ 119℃ (120℃ ), solubility: ether 77g/100mL, ethanol 153g/100mL, n-hexane 0.5g/100mL, toluene 6.2g/100mL, xylene 4.9g/100mL, water 0.0825g/100mL. industrial product m.p. 99 ～ 107℃ , with Phenol odor.

It is an efficient and specific acaricide with touch, fumigation and internal penetration, and still has the effect of killing aphids that have developed resistance to organophosphorus

Pirimicarb is a selective, systemic insecticide widely used for controlling aphids on various crops. Belonging to the carbamate chemical group, it acts as an acetylcholinesterase inhibitor, effectively disrupting the nervous system of target pests. Pirimicarb is known for its rapid action, low toxicity to beneficial insects, and suitability in integrated pest management (IPM) programs.

Key Features

1. Selective Action: Highly effective against aphids without harming most beneficial insects like ladybirds and predatory mites.

2. Systemic and Contact Activity: Works through plant uptake and direct contact.

3. Fast Knockdown Effect: Quickly immobilizes and eliminates aphids.

4. Low Residual Impact: Minimal environmental persistence, making it environmentally friendly.

Applications

Target Pests

• Green peach aphid (Myzus persicae)

• Cotton aphid (Aphis gossypii)

• Black bean aphid (Aphis fabae)

• Other aphid species

Usage Areas

• Field Crops: Wheat, barley, and maize

• Vegetables: Potatoes, tomatoes, and cucumbers

• Fruits: Apples, pears, and citrus

• Ornamental Plants: Roses and other flowering plants

Application Methods

• Foliar Spray: Applied directly to crops to control aphid populations effectively.

Mode of Action

Pirimicarb inhibits acetylcholinesterase, an enzyme critical for nerve function in aphids. This causes the pests to lose coordination, leading to paralysis and death. Its systemic properties allow it to protect new growth, ensuring long-lasting efficacy.

Advantages

1. Selective Toxicity: Targets aphids specifically, sparing beneficial insects.

2. Rapid Action: Provides quick relief from aphid infestations.

3. Systemic Protection: Ensures protection of both treated and new plant growth.

4. Compatibility with IPM: Fits well into integrated pest management strategies.

Safety and Environmental Considerations

Handling and Storage

• Use personal protective equipment (PPE) during handling and application.

• Store in a cool, dry place, away from food, water, and incompatible materials.

Environmental Impact

• Low Risk to Non-Targets: Safe for bees and other beneficial organisms when used as directed.

• Water Safety: Avoid contamination of water bodies to prevent harm to aquatic life.

Human Health Risks

• Low acute toxicity to humans, but skin and eye irritation may occur with improper handling.

• Always follow label instructions and safety precautions.

Limitations

1. Resistance Potential: Overuse can lead to resistance in aphid populations.

2. Limited Spectrum: Effective primarily against aphids, requiring additional treatments for other pests.

3. Environmental Concerns: Careful application needed to avoid contamination.

Conclusion

Pirimicarb is a reliable and selective insecticide for managing aphid infestations across various crops. Its systemic action, rapid efficacy, and compatibility with IPM programs make it an essential tool for sustainable agriculture. Proper application ensures effective pest control while safeguarding beneficial insects and the environment.