DISEASES OF CUMBU/PEARL MILLET/BAJRA DISEASES CAUSAL ORGANISM Downy mildew or green ear Sclerospora graminicola Ergot or sugary disease Claviceps fusiformis Smut Tolyposporium penicillariae Rust Puccinia penniseti 1. DOWNY MILDEW/GREEN EAR – Sclerospora graminicola Symptoms The first symptom appears in seedlings at 3-4 leaf stage. Affected leaves show patches of light green to light yellow colour […]
Tag: fruit pest
Pest Affecting Tomoto Production – Free Online Agri Studymaterial
TOMATO Fruit borer Helicoverpa armigera (Noctuidae: Lepidoptera) It is a major pest of tomato. Main hosts are gram, cotton, citrus, indigo, cowpea, groundnut, linseed, sunflower, bhendi, chilli, millets, tobacco, etc. Young larvae feed on tender foliage and full-grown caterpillars attack fruits. They make circular boreholes and thrust their head inside fruit and eat inner contents. […]
Pest Affecting Brinjal Production – Free Online Agri Studymaterial
BRINJAL Shoot and fruit borer Leucinodes orbonalis (Pyraustidae: Lepidoptera) Leucinodes orbonalis is the most important and destructive pest of brinjal. It starts damaging brinjal plant, few weeks after transplantation. Larva bores into tender shoots and causes withering of terminal shoots or dead hearts. It also bores into petioles of leaves, flower buds and developing fruits […]
Pest on Sesame, Castor, sunflower, Mustard and Green Manure – Free Online Studymaterial
PESTS ON SESAME Til Leaf and Pod Caterpillar, Antigastra catalaunalis Lepidoptera: Pyralidae A serious and regular pest. Young caterpillars feed on leaves. They also bore into the shoots, flowers, buds and pods. An early attack kills the whole plant, but infestation of the shoots at a later stage hampers further growth and flowering. The maximum […]
PESTS ON GROUNDNUT – free online study material
Aphid, Aphis craccivora Hemiptera, Aphididae They are small-sized insects (2 mm long), pear shaped, green, greenish brown or greenish black in colour. Adults are mostly wingless but few winged forms also seen. It has 12-14 generations per year Nymphs and adults suck sap from tender growing shoots, flowers, causing stunting and distortion of the […]
PESTS OF MEDICINAL AND AROMATIC PLANTS – Free Study Material
BELLADONA Cut worm, Agrotis flammetra (Noctuidae: Lepidoptera) Leaf feeder, Archipsinca ceana SENNA Green leaf eating caterpillar, Catopsilia pyranthe Pierdae Lepidoptera Pod borer, Etiella zinckenella Phycitidae Lepidoptera LONG PEPPER Mealy bug, Dysmicoccus sp. (Pseudococcidae: Hemiptera) Tea mosquito bug, Helopeltis theivora (Miridae: Hemiptera) MEDICINAL YAMS Aphids, Aphids gossypii, Pentalonia nigronervosa (Aphididae: Hemiptera) Red spider mite, Tetranychus sp […]
Pest Affecting Cardomom and Betelvine – Pest control Studymaterial
CARDAMOM Shoot/panicle/capsule borer Conogethes punctiferalis (Pyraustidae: Lepidoptera) It is a serious pest of nurseries in Tamil Nadu, Karnataka and Kerala. Alternate hosts are castor, turmeric, guava, mulberry etc. Larvae bore in to pseudostem of seedlings and feed on nursery plants and young tillers in plantation. Infestation is indicated by the presence of entry holes plugged […]
Pest In ONION and GARLIC – Pest affecting Onion and Garlic – Pest Studymaterial
Onion Onion Thrips,Thrips tabaci (Thripidae: Thysanoptera) It is a major cosmopolitan thrips injurious to onion and garlic. Nymphs and adults remain in dense at leaf bases and whorls of onion and feed by lacerating the tissues and imbibing the oozing cell sap. Infested onion develops a spotted appearance on the leaves; subsequently turning into pale […]
Pests on Chillies, Turmeric and Ginger
PESTS ON SPICES AND CONDIMENTS CHILLIES Chilli thrips Scirtothrips dorsalis (Thripidae: Thysanoptera) Thrips cause severe damage in areas where chilli is cultivated as a dry crop. It also attacks on tea, acacia, prosopis, castor, cotton, mango, onion, groundnut, pomegranate, pulses, brinjal grape vine, Citrus sp. and numerous weeds. Both nymphs and adults lacerate leaf tissues […]
Pests On Cotton – Pest Affects the cotton – Study material
PESTS ON COTTONCotton Aphid, Aphis gossypii (Aphididae : Hemiptera) World wide, potential pest – Highly polyphagous, wider host range Nymphs and adults desap on young crop in colonies. Tender leaves curl up, reduced in size, gradually fade and dry up. Plant growth severely shunted. Leaves show oily appearance Sooty mould develops on honey dew on […]
SugarCane Pests – Study About Pest – Sugarcane production – Free Study guide
PESTS ON SUGARCANEEarly shoot borer – Chilo infuscatellus (Crambidae: Lepidoptera) P refer 1-3 months old crop. Caterpillar enters the stem by making holes above the ground level. Formation of “dead heart” is the symptom. Affected plants can be easily pulled out. Rotten portion of the dead heart emits an offensive odour. High temperature, low humidity, […]
Pest On CITRUS fruits – Lemon, Orange, etc – Free Online Studymaterial
CITRUS Lime tree borer or orange borers Chelidonium cinctum (Cerambycidae: Coleoptera) This is a major and highly destructive pest in South India. Wilting of twigs and stems, gum exudations and wood powder accumulation on ground below are symptoms of attack. Adult is dull metallic green to dark violet with a yellow band across the middle […]
Pest On Pulses – Agricultural studies
PESTS ON PULSES Gram pod borer –Helicoverpa armigera Noctuidae: Lepidoptera It is a serious pest of chickpea, pigeonpea, pea, mungbean, urd bean, lentil, soybean, cowpea, cotton, sorghum, okra, maize, tomato, bhendi and sunflower. Larva – polyphagous Feed on the foliage, when young and on the seed in later stages with their body hanging outside. A […]
Pest Affecting fruits – Banana, Apple, Grapes, Fig, Tamarind, Papaya, star goosberry, custard apple, pear, peach and plum
BANANA Rhizome weevil Cosmopolites sordidus (Curculionidae: Coleoptera) It is a major pest of banana. Adult is a stout, reddish brown weevil. Grub is apodous and yellowish with reddish head. Grub bores into rhizome and tunnels within it. Pupates within a chamber made near the outer surface of rhizome. Adult also tunnels within stem feeding on […]