DISEASES CAUSAL ORGANISM Seedling blight Phytophthora parasitica Rust Melampsora ricini Leaf blight Alternaria ricini Brown leaf spot Cercospora ricinicola Bacterial leaf blight Xanthomonas campestris pv. ricini 1. SEDLING BLIGHT – Phytophthora parasitica Symptoms The disease appears as circular, dull green patch on both the surface of the cotyledonary leaves. Later it spreads and cause rotting. […]
Tag: mulberry plant
Disease of Oats plants – Agricultural study materials
Diseases of oats DISEASES CAUSAL ORGANISM Septoria avenae blotch Phaeosphaeria avenaria f.sp. avenaria Stem and leaf rust Puccinia graminis var. avena Leaf spot Drechslera campanulata Bacterial blight Pseudomonas syringae pv.striafaciens Yellow dwarf Barley yellow dwarf virus 1. Septoria avenae blotch — Phaeosphaeria avenaria f.sp. avenaria Symptoms The fungus infects leaves, sheaths and stem and […]
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 Affect in Pepper Production – Pest control in pepper
PEPPER Pollu beetle, Longitarsus nigripennis (Alticidae: Coleoptera) This is the most important pest in West coast area. It causes 30 to 40 percent loss in yield of pepper. Grub feeds on growing tip, tender stem, leaf petiole, spikes and berry. Tunneling of tender stem causes drying up of shoot. Portions of spikes tunneled by grubs […]
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 […]
Sericulture – Mulberry cultivation- Mulberry Yield – Agricultural Study material
Mulberry cultivation Mulberry is a fast growing deciduous tree occurring in sub tropical and temperate climate. Mulberry has characteristic long idioblast cells in the upper epidermis of leaves. Inflorescence is a catkin / spike with unisexual flowers. Hence it is a cross pollinated crop. The important species of mulberry cultivated in India are , a) […]