Geography

The Zoological Survey of India (ZSI), with help from Gujarat’s forest department, is attempting for the first time a process to restore coral reefs using biorock or mineral accretion technology. A biorock structure was installed one nautical mile off the Mithapur coast in the Gulf of Kachchh on January 19. Biorock is the name given … 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 term irrigation efficiency expresses the performance of a complete irrigation system or components of the system. Irrigation efficiency is defined as the ratio between the amount of water used to meet the consumptive use requirement of crop plus that necessary to maintain a favourable salt balance in the crop root zone to the total … Read more

Besides the longitudinal divisions, the Himalayas have been divided on the basis of regions from west to east. These divisions have been demarcated by river valleys. Punjab Himalaya: The part of the Himalayas lying between Indus and Satluj has been traditionally known as Punjab Himalaya but it is also known regionally as Kashmir and Himachal … Read more

Warming and cooling of the Pacific Ocean is most important in terms of general atmospheric circulation. The warm water of the central Pacific Ocean slowly drifts towards the South American coast and replaces the cool Peruvian current. Such an appearance of warm water off the coast of Peru is known as El Nino. The El … Read more

When the wind blows parallel to a coastline, surface waters are pushed offshore and water is drawn from below to replace the water that has been pushed away. The upward movement of this deep, colder water is called upwelling. The deeper water that rises to the surface during upwelling is rich in nutrients. These nutrients … Read more

Inter Cropping: Growing two or more crops simultaneously on the same piece of land with definite row arrangementor in a fixed ratio. It was originally practiced as an insurance against crop failure under drained conditions. Intercroppingsystems utilizes resources efficiently and their productivity is increased. Example: – Maize + Cowpea, Potato + Mustard, Groundnut + Redgram. … Read more

India is one of the major producers of fertilizers and meets 80 percent of urea requirements by domestic production.For feeding millions of mouths, high productivity is required which makes high level of plant nutrients essential. NBS scheme is being implemented from April 2010 by the Department of Fertilizers,Ministry of Chemicals & Fertilizers. Under NBS, a … Read more

Manufactured sand (M-Sand) is a substitute of river sand for concrete construction . Manufactured sand is produced from hard granite stone by crushing.The crushed sand is of cubical shape with grounded edges, washed and graded to as a construction material. The size of manufactured sand (M-Sand) is less than 4.75mm.Manufactured sand is an alternative for … Read more

The Sargasso Sea, located entirely within the Atlantic Ocean, is the only sea without a land boundary. The Sargasso Sea is a vast patch of ocean named for a genus of free-floating seaweed called Sargassum. While there are many different types of algae found floating in the ocean all around world, the Sargasso Sea is … Read more