Diseases and Management of Crops under Protected Cultivation

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(Diseases and Management of Crops under Protected Cultivation) • Grow resistant cultivars. • Destroy any infected plants. Tomato Spotted Wilt Virus • The virus is spread primarily by thrips, particularly the western flower thrips. • Leaves get blackish-brown circular spots, or tan spots bordered by a black margin. • Fruit gets orange to yellow spots surrounded by a green margin. Management • Control the virus is by controlling the thrips vector through insecticides. • Do weed control to minimize the population of thrips and virus. Insect and Pest Management • Following insects are common problem of greenhouse capsicum- Pest Symptoms Management Harvesting • “Unloading” of plant and allowing energy to go in to new growth. • Capsicum fruit can be harvested when they are harvestable-green. • Better to harvest all first fruit green at once because if only some fruits are harvested green, the others fruits are more at risk of creaking. • The last ripe fruit should be harvested after some new fruits have set on that stem. Harvesting and Packaging • Capsicum fruit must be harvested with a very sharp, small knife, to get a smooth stem-end appearance, and to minimize damage to other fruit. • In peak periods frequent harvesting is needed: o green fruit once per fortnight o coloured fruit once or twice a week • For market, capsicum fruits are graded by size and shape and pack these fruits in proper - 157 -
(Diseases and Management of Crops under Protected Cultivation) packaging material. Post harvest handling • To improve post harvest quality, capsicum are cooled before market or storage by hydrocooling (before packing) or forced air cooling (after packing). • Capsicum are sensitive to chilling injury below 7°C. • Typical transit or storage conditions are 7°C to 13°C with high humidity of 90-95%. • Senescence of capsicum is hastened by exposure to ethylene, so storage with ethylene producing fruit is not recommended. Most common post harvest diseases are-Bacterial soft rot , Anthracnose, Gray Mould - 158 -
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CENTRE OF ADVANCED FACULTY TRAINING
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CONTENTS Sl. No. Title Speaker Page
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REMARKS by Dr. K.S. Dubey Director
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and extension literature that have
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discussions. No doubt the course is
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(Diseases and Management of Crops u
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Introduction (Diseases and Manageme
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Loads For Greenhouse: (Diseases and
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Chemical Control Chemical Abamectin
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4. High value off season vegetable
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ANNEXURE-I CENTRE OF ADVANCED FACUL
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9. Dr. (Mrs.) T.K.S. Latha Assistan
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TRAINING ON ANNEXURE-III DISEASES A
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ANNEXURE-IV CENTRE OF ADVANCED FACU
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14:30-17:00 hrs Visit to VRC for pr
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Sunday 23.9.2012 Monday 24.9.2012 1
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Diseases and Management of Crops under Protected Cultivation

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