Insects

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 […]

Insects

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 […]

Insects

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 […]

Insects

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, […]

Insects

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 […]

Agricultural Study Materials Insects

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 […]

Agricultural Study Materials Insects

Pest Affecting Rice – Types Of Pest Affecting rice – Study Material

PEST ON RICE Swarming caterpillar – Spodoptera mauritia     Noctuidae : Lepidoptera It is a serious pest on nurseries and early stage of the crops. During night hours, larvae cut the seedlings in large scale and present a cattle-grazing appearance to the field. Gregarious feeders and march from field to field. Damage is severe in […]

Agricultural Study Materials Insects

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 […]

Agricultural Study Materials

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 […]

Agricultural Study Materials

Insect Mouth Parts and their Modifications – Agricultural studies – Free Online Studymaterial

Mouth parts of insects have many variations in structure and function depending upon theirfeeding situations. Insect mouthparts are broadly classified into two groups:- Mandibulate type (Biting types) (Feeding on solid food) Haustellate type (Sucking type) (Feeding on liquid food) I. Mandibulate types1. BITING AND CHEWING TYPEEg.: Cockroach, Grasshopper, Beetles, Larva Labrum: Rectangular plate like Mandibles: […]