Black thrips are one of the most destructive sucking pests in chilli cultivation, especially during the flowering stage. They damage leaves, flowers, and buds, leading to flower drop, poor fruit set, and reduced yield, ultimately affecting farmer profitability.

This guide covers symptoms, causes, preventive practices, and scientifically recommended chemical control methods to effectively manage black thrips in chilli crops.

Black Thrips in Chilli Symptoms

• Leaves develop a silvery appearance along with curling and crinkling
• Buds become brittle and may fall off, reducing flowering
• Brown streaks appear on flower petals due to feeding damage
• Infested plants show stunted growth, especially in early stages
• There is poor fruit set, and the fruits formed are often malformed or underdeveloped

Preventive Measures

• Intercrop with agathi/maize/sorghum to provide shadeand reduce thrips multiplication
• Grow 2-3 rows of maize or sorghum as border crops to limit pest movement
• Planting trap crops like marigolds in between the field as a trap crop to reduce damage
• You must not grow chilli right after a set of sorghum..
• Use light water sprinkling to reduce thrips population
• Install blue, yellow, and white sticky traps @ 60–70 traps/ha for mass trapping
• Spray neem oil (10000 ppm) @ 2 ml/L to control eggs and reduce feeding

Chemical Control for Black Thrips in Chilli

• Keefun Insecticide (Tolfenpyrad 15% EC) is a broad-spectrum insecticide effective against thrips, working through an anti-feeding action that stops pests from feeding immediately after contact. It controls thrips at different growth stages and provides good protection. It should be used at a dose of 1.5-2 ml per litre of water.
  
• Delegate Insecticide (Spinetoram 11.7% SC) is a fast-acting, translaminar insecticide derived from bacterial sources, offering long-lasting control of chilli black thrips. It is effective even at low doses and is relatively safer for beneficial insects. It should be applied at 0.9 ml per litre (or 180 ml per acre), preferably in the evening for better results.

Black thrips in Chilli can also be controlled by the under-mentioned chemicals.

• Gracia Insecticide (Fluxametamide 10% EC) is a broad-spectrum, translaminar insecticide from the isoxazoline group that works through contact and ingestion. It is relatively safer for beneficial insects and works best when applied at the early stage of infestation. The recommended dose is 1 ml per litre or 160 ml per acre.
• Exponus Insecticide, (Broflanilide 300 g/L SC) is a modern insecticide useful for resistance management and effective against difficult-to-control thrips. It should be sprayed during morning or evening hours, avoiding bee activity, at a dose of 34 ml per acre.
• EM 1 Insecticide (Emamectin Benzoate 5% SG) acts through contact and stomach action with translaminar movement, making it effective against thrips on the lower leaf surface. It has low residue and fits well in IPM programs, with a recommended dose of 80 gm per acre.

List Of Chemicals To Control The Black Thrip Attack

Sl.No.	Insecticide	Dosage per litre of water
1	Alanto Insecticide	2mL/L
2	Osheen Insecticide	0.4 gm /L
3	Benevia Insecticide	2mL/L
4	Keefun Insecticide	1.5-2 mL/L
5	Delegate Insecticide	0.9 mL/ltr
6	Largo Insecticide	0.9 mL/ltr
7	Jump Insecticide	0.3 gm/L
8	Regent RC Insecticide	1.5 mL/L of water to 2 ml/L
9	Pegasus Insecticide	1 gm/L
10	Danitol Insecticide	2 mL/L

Conclusion

An integrated pest management system is essential for any crop to effectively reduce infestations. Do make sure to use the insecticides only as recommended. We hope that this information will be helpful to you. To get all kinds of information related to crops visit our website

Note: The information contained herein is for informational purposes only. Nothing herein shall be construed to be financial or legal advice. Pesticides are a considerable risk of loss in crops and viewers are advised to do their own research before making any decisions.