Thrips are tiny, slender insects with fringed wings that belong to the order Thysanoptera. There are over 6,000 known species of thrips found worldwide, but only a small fraction of them are considered pests. Higher populations and more aggressive species inflict greater damage. Certain grape varieties are more susceptible to thrips damage than others. Thrips feeding during critical stages like flowering and fruit development can be particularly detrimental. Hot, dry weather favors thrips populations.
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Type of Infestation: Pest
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Common Name: Thrips
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Causal Organism: Drepanothrips reuteri
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Affected Parts Of the plant: Leaves, fruits
Identification:
Minute size: Thrips are very small, typically measuring only 1mm in length, making them difficult to see with the naked eye.
Slender body: Their bodies are slender and elongated, often described as cigar-shaped.
Fringed wings: Most thrips have two pairs of wings that are fringed with hairs, but some species are wingless.
Unique mouthparts: Thrips have asymmetrical mouthparts that are used to pierce plant tissue and suck out juices.
Environmental favorable factors for pests/Diseases:
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Temperature: Thrips thrive in warm temperatures, typically between 20°C and 32°C (68°F and 90°F). These temperatures accelerate their life cycle, enabling them to reproduce more quickly and increase their population density.
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Humidity: Dry conditions favor thrips, as they have soft bodies and lose moisture easily in humid environments. Vineyards with low humidity due to arid climates or irrigation practices create a comfortable habitat for them.
Symptoms of Pest/Disease:
- Tiny, black specks on the leaves and fruit
- Silvery streaks on the leaves
- Deformed or misshapen fruit
- Brown or discolored patches on the fruit
Measures to control Pests/Diseases:
| Products |
Technical Names |
Dosages |
| Fantasy |
Fipronil 5 % SC |
400-500 ml per Acre |
| Spino 45 |
Spinosad 45 % sc |
60-90 ml per Acre |
| Ashwamedh |
Diafenthiuron 50 % WP |
250 g / acre |
| Nashak |
Fipronil 40 % + Imidacloprid 40 % wg |
175-200 gm per acre |
