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. […]
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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 TEA – Pest Control on Tea production – free Studymaterial
PESTS OF TEA Tea mosquito bug, Helopeltis theivora Miridae – Hemiptera Adults and nymphs suck the sap from buds, young leaves and tender stems by puncturing the plant tissues with needle like stylets and inject toxic saliva. These punctures appear as reddish brown spots. Due to intensive feeding, leaves curl up, become badly deformed and […]
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 Mango – What are all the Pest Affects mango production – Mango production, Cultivation
MANGO Mango hoppers Idioscopus clypealis, I. niveosparsus, Amritodes atkinsoni (Cicadellidae: Hemiptera) Hoppers are the most destructive pests of mango. Hoppers are active throughout the year, but abundant during hot months of May to June and cold months of October to January, synchronizing with flowering of mango trees. When inflorescence appears, hoppers start laying […]
WHAT IS PEST ON MILLETS – Study About Pest Affects Millets
Millets are indigenous to many parts of the world.The most widely grown millet is pearl millet, which is an important crop in India and parts of Africa.Finger millet, proso millet, and foxtail millet are also important crop species In India, various alcoholic beverages are produced from millets.[31] Millet is also the base ingredient for the […]
Pest – Definition of Pest – Categories of Pests – Causes of Pest outbreak – Study Guide
PEST – Derived from French word ‘Peste’ and Latin term ‘Pestis’ meaning plague or contagious disease Pest is any animal which is noxious, destructive or troublesome to man or his interests A pest is any organism which occurs in large numbers and conflict with man’s welfare, convenience and profit A pest is an organism which […]
Common Predators and Parasitoids
Beneficial insects and mites belong to three categories: predators, parasitoids, and pollinators. Predators capture and eat other organisms such as insects or mites. Predators include ladybird beetles, ground beetles, lacewings, syrphid (hover) flies, aphid midges (Aphidoletes) and yellowjacket wasps. Parasitoids are insects that parasitize other insects. The immature stages of parasitoids develop on or within its […]
Mulberry silkworm –races and their characters – Mulberry plantation studies
Voltinism is a term used in biology to indicate the number of broods or generations of an organism in a year. or Number of generations per year under natural environmental conditions. Based on voltinism, Bombyx mori is divided in to 3 types, namely i) Univoltines, ii) Bivoltines and iii. Multivoltines. i) UNIVOLTINE RACES: They produce […]
Insect Wings & Legs and their modifications – Free Online Studymaterial
The thorax consists of three segments viz., pro, meso and metathorax and each bear onepair of legs called fore, middle and hind legs respectively. Legs are the principal organ oflocomotion and they have undergone many modifications and have been adapted to wide rangeof functions. The generalized insect leg consists of six segments. 1. A basal […]
Insects, Characteristics of insects, Dominance of Insects – Factors responsible for dominance – Agricultural Free Online Studymaterial
ENTOMOLOGY DEFINITION: Entomology is the scientific study of insects. The word ‘Entomology’ is derived from two Greek words ‘Entomon’ meaning insects and ‘logos’ meaning study It is a branch of zoology dealing with Origin & evolution of insects and their diversity & classification, body organisation and function, development, interaction with surroundings in which they live, […]