Katyayani Organics
Bio/Organic Pesticides
Katyayani Samhar is a powerful bio larvicide formulated with Bacillus thuringiensis (Bt), designed to target and control a wide range of insect larvae. This liquid bio-insecticide works through ingestion, disrupting the gut lining of larvae and stopping their feeding, which leads to pest control.
Target Pests
Effective against a broad range of larval pests, including:
Tobacco caterpillars, corn borers, stem borers, fruit borers, pod borers, shoot borers, rice leaf rollers
Leaf-eating caterpillars, cotton bollworms, tea caterpillars, and more
Covers pests from Lepidoptera, Hymenoptera, Diptera, and Coleoptera families (e.g., tea loopers, pine caterpillars, spiny moths)
Target Crops
Ideal for use in crops such as:
Cotton, paddy, cabbage, chickpea, okra, tomato, cauliflower, chilli, gram, pigeon pea, soybean, tobacco, castor, teak, red gram, and other vegetables, pulses, and field crops.
Mode of Action
Bt works specifically on insect larvae through the following process:
Ingestion: Larvae consume plant material treated with Bt spores
Activation: Spores dissolve in the insect’s alkaline midgut, releasing protein crystals
Toxin Formation: Gut enzymes convert crystals into active Bt (Cry) toxins
Binding: Toxins bind to the midgut cells and form pores
Cell Damage: These pores cause the cells to rupture
Larval Death: The pest stops feeding and eventually dies from digestive failure
Application & Dosage
Gardening: 5–10 ml per liter of water
Agriculture: 1–2 liters per acre (via foliar spray)
Usage Tips & Precautions
Apply 2–3 days earlier than conventional pesticides for best results
Ideal temperature: above 18°C; apply in the evening for optimal effect
Best performance when sprayed at temperatures above 30°C
Repeat application every 10–15 days for sustained protection