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 […]
Tag: mulberry studies
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) […]