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: Cotton 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 […]
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 […]
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 […]