Geography

Earth’s core is the very hot, very dense center of our planet. The ball-shaped core lies beneath the cool, brittle crust and the mostly-solid mantle. The core is found about 2,900 kilometers (1,802 miles) below Earth’s surface, and has a radius of about 3,485 kilometers (2,165 miles). Planet Earth is older than the core. When … Read more

Contract farming is a kind of system in which bulk purchaser enters into contract with farmers. It includes agro- processing, exporting and trading units.  They purchase a specified quantity of any agricultural commodity at pre agreed price. Sponsor provides all kind of production support to the contracted farmers. This include extension service also.     … Read more

Crust: The outer most layer or shell of the earth is known as earth’s crust. On an average it is 30km deep. It can be up to 70km under high mountains and up to 8km under ocean. It represents less than 1% of earth’s total volume and its average density is 2.7 gm/cm3. It is … Read more

: Winds blowing across the ocean surface push water away. Water then rises up from beneath the surface to replace the water that was pushed away. This process is known as “upwelling.”   Upwelling occurs in the open ocean and along coastlines. The reverse process, called “downwelling,” also occurs when wind causes surface water to … Read more

1) Planetary Winds – The water beneath the wind forms surface water current. The pushing action of those winds makes the water flow in definite direction. 2) Rotation of Earth – the world rotates from the west to the east. As a result of the force, the permanent winds are deflected to the proper within … Read more

There are mountains, basins, plateaus, ridges, canyons and trenches beneath the ocean water too. These relief features found on the ocean floor are called Submarine Relief. The ocean basins are broadly divided into four major subdivisions. They are; Continental Shelf: They slope seaward from coast to a point where the slope becomes very steep. This shallow submerged extension … Read more

Storage of food grains in open space Normally storage in open in the form of CAP is supposed to be resorted to during peak procurement seasons. The storage in the CAP should not be more than a year with at least one turn-over of the stock every 6 months to retain the quality of the … Read more

Agroforestry is defined as a land use system which integrates trees and shrubs on farmlands and rural landscapes to enhance productivity, profitability, diversity and ecosystem sustainability. It is a dynamic, ecologically based, natural resource management system that, through integration of woody perennials on farms and in the agricultural landscape, diversifies and sustains production and builds … Read more

The Intertropical Convergence Zone, or ITCZ, is the region that circles the Earth, near the equator, where the trade winds of the Northern and Southern Hemispheres come together. The intense sun and warm water of the equator heats the air in the ITCZ, raising its humidity and making it buoyant. Aided by the convergence of … Read more

The main achievements of Green Revolution may be summarized as under: The production and productivity of wheat, rice, maize, and bajra has increased substantially. India has become almost self-sufficient in the matter of staple foods. The double cropped area has increased; thereby intensification of the Indian agriculture has increased. In the areas where Green Revolution … Read more