Classification of agricultural crop protection medicines
Pesticides in Indian agriculture are scientifically categorized according to the specific target pest organism they control and their mode of action.
Understanding these broad categories enables farmers to select the correct remedy rather than applying inappropriate chemicals.
- Insecticides (Kitnashak): Chemical and biological agents targeting insect pests like borers, caterpillars, aphids, and whiteflies.
- Fungicides (Fafundinashak): Formulations controlling fungal diseases including blights, downy mildew, powdery mildew, and rusts.
- Herbicides / Weedicides (Kh खरपतवारनाशक): Selective and non-selective chemicals used to eliminate unwanted grass, sedge, and broadleaf weeds.
- Bio-pesticides (Jaivik Kitnashak): Microorganisms, botanicals (neem extract), and beneficial fungi (Trichoderma) for eco-friendly pest management.
Understanding statutory toxicity color triangles
Under the Insecticides Act, 1968, every registered pesticide package in India must display a statutory color-coded hazard triangle.
The color of the lower half of the diamond-shaped symbol indicates the chemical's acute toxicity level and safety risk.
- Bright Red (Extremely Toxic): Highly hazardous; requires strict handling and protective equipment.
- Bright Yellow (Highly Toxic): Severe toxicity hazard; handle with extreme caution and protective gear.
- Bright Blue (Moderately Toxic): Moderate toxicity hazard; follow label safety precautions.
- Bright Green (Slightly Toxic): Low toxicity hazard; safer for operators and non-target beneficial organisms.
Safe spraying protocols, dilution, and pre-harvest intervals
Applying crop protection chemicals requires scientific precision to ensure effective control without contaminating food crops, soil, or groundwater.
Operators must strictly adhere to the Pre-Harvest Interval (PHI)—the mandatory waiting period between the last chemical spray and crop harvest.
- Dilution and mixing: Mix only in clean water using label-prescribed concentrations; do not invent arbitrary tank mixtures.
- Personal protective equipment (PPE): Always wear rubber gloves, face mask, eye goggles, and full-length clothing during spraying.
- Pre-harvest interval (PHI): Respect the mandatory waiting days indicated on the container label before harvesting produce for consumption.
- Storage and disposal: Store chemicals locked away from children, food, and animals; safely puncture and bury empty containers.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Directorate of Plant Protection, Quarantine & Storage ↗Related on KisanPe
Common questions
What do the different color triangles on pesticide containers mean?
They indicate chemical toxicity: Red is extremely toxic, Yellow is highly toxic, Blue is moderately toxic, and Green is slightly toxic.
How do I check if an agricultural pesticide is legally approved in India?
Check the official registration list maintained by the Central Insecticides Board & Registration Committee (CIBRC) at cibdc.gov.in.
What is a Pre-Harvest Interval (PHI) in crop protection?
PHI is the mandatory waiting period between the final chemical spray and crop harvest to ensure residues drop within safe statutory limits.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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