Symptom Leaves are droop and drop off leaving behind only top leaves. Diseased plants are sickly in appearance. Wilting of plants, root degeneration, collar rot, drooping of leaves and necrosis of affected tissue and finally leading to death of plants. Necrosi

Symptom Powdery mass covering entire leaf It is characterised by typical mildew growth which is generally confined to the under-surface of the leaf. When the infection is severe the upper-surface is also covered by the whitish growth of the fungus. Light green

Symptom Spots on leaf The disease appears as minute black or brown points surrounded by a pale green ring. These spots are visible on both the surfaces of the leaf. As the spots enlarge, the centre turns pale brown and then greyish-white surrounded by a deep b

Symptom Alterneria leaf spot with concentric rings. All the aerial parts of the plant, i.e., stem, leaves, inflorescence and capsules are liable to be attacked. These may appear on any portion of the leaf and are irregular, scattered, and have concentric rings

Symptom Dead seedling The disease first makes its appearance on both the surfaces of the cotyledonary leaves in the form of roundish patch of dull green colour which soon spreads to the point of attachment causing the leaf to rot and hang down. Spot on older l

Tobacco caterpillar: Spodoptera litura Symptoms of damage: The early instar larvae feed gregariously on the under surface of the leaf leading to skeletonization of the leaves Sometimes the feeding is so heavy that only petioles and branches are left behind. In

Red hairy caterpillar: Amsactaalbistriga, A. mooreii Symptoms of damage: These hairy caterpillars scrap the under surface of the leaf when they are in neonate stage Later the scrapped patches of the leaves looks like thin papery Fully grown larvae devour the e

Symptoms of damage: Cause defoliation Identification of the pest: Larva: green coloured, spiny caterpillar with yellow stripe on the dorsal region Adult: brown butterfly with black wavy lines on the wings Management: To control early stage larvae, spray neem s

Woolly bear: Pericalliaricini Symptoms of damage: Cause defoliation Identification of the pest: Larva: black with brown head having long brown hairs Adult: grey coloured moth. Hind wings are pinkish with dark spots Management: To control early stage larvae, sp

Symptoms of damage: Cause - defoliation Identification of the pest: Euproctis fraterna: Larva : Reddish brown hairy caterpillar, head red in colour surrounded by white hairs. Abdomen has tufts of hairs all over the body and a long pre anal tuft. Adult : yellow

Symptoms of damage: Cause defoliation Identification of the pest: Larva: Head is brown in colour. Prothorax with a pair of long pencils of hairs pointing forward. Abdomen- laterally first two segments have tufts of yellowish hair. Long brown hairs from the 8th

Castor Slug: Parasa lepida Symptoms of damage: Feed gregariously on the leaves of castor and later spread over to the entire plant Cause defoliation, leaving only the midrib and veins Identification of the pest: Larva: slug like, ventrally flat, greenish body

Castor Semilooper : Achaea janata, Paralelliaalgira Symptoms of damage: Damage to complete defoliation Identification of the pest: Achoea janata: Larva: semilooper with varying shades of colour with black head. Abdomen has a red spot on the third abdominal seg

Thrips: Retithrips siriacus: Scirtothrips dorsalis Thrips: Retithrips siriacus: Scirtothrips dorsalis Symptoms of damage: Terminal leaves silvered The injury results in development of dull yellowish-green patches on the upper leaf surface and brown necrotic ar

White flies: Trialeurodes ricini Symptoms of damage: Water soaked spots on the leaves which become yellow and dry up Leaves appear sickly and get coated with sooty mould Stunted plant growth, shedding of fruiting bodies Identification of the pest: Nymph : yell

Jassids : Empoasca flavescens Symptoms of damage: Leaf margins become yellow Curling of leaf edges and leaves turn red or brown Leaves dry up and shed Identification of the pest: Nymph : green coloured Adult : green wedge shaped insect Management: Seed treatme

Capsule Borer: Conogethes (=Dichocrosis) punctiferalis Symptoms of damage Capsule with bore holes Damaged capsules webbed together Peduncle and capsules showing galleries made of silk and frass Identification of the pest Larva: pale greenish with pinkish tinge

Symptoms of damage: Young larvae feed gregariously mostly on the under surface of the leaves A caterpillar of later stages defoliates the field completely Identification of the pest: Egg: Laid in clusters of 50-100 on the lower side of leaves Larvae: Orange co

Symptoms of damage: Drying and dropping of leaves Identification of the pest: Larva: minute, orange yellowish in colour and apodous Adult: pale yellow colour fly Management: Spray neem seed kernal extract (NSKE) 5% @2.5ml/litre of water Leaf mining damage Leaf