Powdery mildew

Powdery mildew, die-back and fruit rot

Powdery mildew: spray wettable sulphur at 3 g per litre (or carbendazim at 1 g per litre) three times at 15-day intervals from the first appearance of symptoms. Die-back and fruit rot: spray mancozeb at 2 g per litre or copper oxychloride at 2.5 g per litre three times at 15-day intervals, starting when die-back symptoms are noticed.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Chilli – Diseases (Powdery mildew; die-back and fruit rot), p. 77

Region

Tamil Nadu

Last updated

2026-11-04

Powdery mildew and fruit rots

Powdery mildew: spray wettable sulphur at 0.2%. Anthracnose and stalk-end rot: spray mancozeb at 2 g per litre (or carbendazim at 1 g per litre) as a pre-harvest spray, three times at 15-day intervals.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Mango – Diseases (Powdery mildew; anthracnose & stalk end rot)

Region

Tamil Nadu

Last updated

2026-11-04

Powdery mildew, rust and yellow mosaic: non-chemical measures

Powdery mildew: spray NSKE 5% or neem oil 3% twice at a 10-day interval from the first symptoms. Rust: spray 10% eucalyptus leaf extract when the disease starts and 10 days later. Yellow mosaic (spread by whitefly): install yellow sticky traps at 12 per hectare, rogue out virus-infected plants up to 45 days, and spray 10% notchi leaf extract at 30 days or a neem formulation at 3 ml per litre.

Source

Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Greengram – Disease management (Powdery mildew, rust, yellow mosaic), pp. 149–150

Region

Tamil Nadu

Last updated

2026-11-04

Chemical pesticides: ask before you spray

The source lists insecticides and fungicides for sesame pests, powdery mildew, leaf spots and root rot. Many are hazardous, and some may be restricted. Choose a product only with your local Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Sesame – Pest & disease management, pp. 202–203

Region

Tamil Nadu

Last updated

2026-11-04

Chemical pesticides: ask before you spray

The source lists chemical sprays for fruit borers, leafhopper, aphids, mites, whiteflies, powdery mildew and nematodes. Many are hazardous, and some may be restricted. Vegetables are eaten fresh, so choose any product only with your local Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Bhendi – Plant protection, pp. 70–71

Region

Tamil Nadu

Last updated

2026-11-04

Pests and diseases: ask before you spray

The source lists chemical sprays for aphids, jassids, fruit borers and caterpillars, red spider mite, powdery mildew and downy mildew. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Bottle gourd – Plant protection, pp. 90–91

Region

Tamil Nadu

Last updated

2026-11-04

Pests and diseases: ask before you spray

The source lists chemical sprays for aphids, jassids, fruit borers and caterpillars, red spider mite, powdery mildew and downy mildew. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Bitter gourd – Plant protection, pp. 93–94

Region

Tamil Nadu

Last updated

2026-11-04

Pests and diseases: ask before you spray

The source lists chemical sprays for aphids, jassids, fruit borers and caterpillars, red spider mite, powdery mildew and downy mildew. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Ribbed gourd – Plant protection, p. 88

Region

Tamil Nadu

Last updated

2026-11-04

Pests and diseases: ask before you spray

The source lists chemical sprays for aphids, jassids, fruit borers and caterpillars, red spider mite, powdery mildew and downy mildew. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Snake gourd – Plant protection, pp. 85–86

Region

Tamil Nadu

Last updated

2026-11-04

Pests and diseases: ask before you spray

The source lists chemical sprays for aphids, jassids, fruit borers and caterpillars, red spider mite, powdery mildew and downy mildew, and lists red pumpkin beetle, leaf miner, thrips, whitefly and pumpkin caterpillar among the pests. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Pumpkin – Plant protection, p. 83

Region

Tamil Nadu

Last updated

2026-11-04

Pests and diseases: ask before you spray

The source lists chemical sprays for aphids, jassids, fruit borers and caterpillars, red spider mite, powdery mildew and downy mildew. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Ash gourd – Plant protection, pp. 96–97

Region

Tamil Nadu

Last updated

2026-11-04

Pests and diseases: ask before you spray

The source lists chemical treatments for leafhoppers, aphids, whitefly, ash weevils, leaf spot and powdery mildew (neem-based azadirachtin is listed for ash weevils). Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Cluster bean – Plant protection, pp. 107–108

Region

Tamil Nadu

Last updated

2026-11-05

Pests and diseases: ask before you spray

The source lists chemical treatments for white grub, stem weevil, leafhoppers, aphids, ash weevils, pod borer, powdery mildew, rust, anthracnose, leaf spot and root rot. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), French bean – Plant protection, pp. 111–113

Region

Tamil Nadu

Last updated

2026-11-05

Pests and diseases: ask before you spray

The source lists chemical treatments for pod borer, sucking pests and powdery mildew (neem-based azadirachtin is listed for pod borer). Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Lab lab or Dolichos bean – Plant protection, p. 110

Region

Tamil Nadu

Last updated

2026-11-05

Pests and diseases: ask before you spray

The source lists chemical treatments for powdery mildew, anthracnose, die-back and fruit rot, nematodes and sucking pests (growth-regulator sprays are also listed). Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Capsicum – Diseases; nematodes and sucking pests, p. 80

Region

Tamil Nadu

Last updated

2026-11-05

Diseases: biological measures in the source

Powdery mildew: seed treatment with Pseudomonas fluorescens 10 g/kg and sprays of 2 g/l, or NSKE 5% three times at 10-day intervals from the first sign. Wilt: seed treatment with Pseudomonas 10 g/kg and 2.5 kg/ha to the soil. Chemical options for aphids, powdery mildew and grain mould are also listed — ask your officer.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Coriander – Plant protection, p. 186

Region

Tamil Nadu

Last updated

2026-11-05

Root rot and powdery mildew

Root rot: neem cake 150 kg/ha to the soil and seed treatment with Trichoderma asperellum 4 g/kg (or 5 kg/ha to the soil). Chemical drenches and sulphur options for root rot and powdery mildew are also listed — ask your officer.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Fenugreek – Plant protection, p. 188

Region

Tamil Nadu

Last updated

2026-11-05

Pests, diseases and hormones: ask before you spray

Remove loose bark at pruning to stop pests laying eggs. The source lists chemical sprays for flea beetles, nematodes, powdery mildew, downy mildew, anthracnose, rust and bacterial leaf spot, and a schedule of growth hormones (GA3 and others) for berry size. Hormone timing and dose are critical — for example, the source warns against GA3 in cloudy weather and from full bloom to fruit set. Choose any product only with your local Horticulture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Grapes – Plant protection; quality improvement, pp. 24–27

Region

Tamil Nadu

Last updated

2026-11-04

Fruit fly and scales: non-chemical measures in the source

Fruit fly: collect fallen and infested fruits and bury them under a thick layer of soil; plough between trees to expose pupae; use methyl eugenol lure traps (25/ha); neem oil 30 ml/l is also listed. Scale insects: prune and burn affected parts. Chemical sprays for black leaf spot and powdery mildew are also listed — ask your officer.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Ber – Plant protection (pests), p. 40

Region

Tamil Nadu

Last updated

2026-11-05

Pests and diseases: ask before you spray

The source lists chemical sprays for chafer beetle, white grub, red scale, mealybug, thrips, aphids, leafhoppers, two-spotted mite, black spot and powdery mildew. Choose any product only with your local Horticulture or Agriculture Officer.

Follow the instructions on the product label. Consult your local Agriculture Officer before use.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Rose – Plant protection, pp. 248–249

Region

Tamil Nadu

Last updated

2026-11-05

Pests and diseases: non-chemical measures in the source

Mealybug: fish oil rosin soap 25 g/l and release of Cryptolaemus beetles (10 per tree). Pink disease: inspect trees in July–September and apply Bordeaux paste early; prune and burn dried branches. Brown root disease: open the roots and prune dead ones. Avoid rubber accumulating at the base of trees. Chemical and copper sprays for leaf fall, powdery mildew, leaf spots, bark canker and rots are also listed — ask your officer.

Source

Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Rubber – Plant protection, pp. 210–211

Region

Tamil Nadu

Last updated

2026-11-05