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Cereals The word cereal is derived from Ceres, which according to the Roman mythology denotes “Goddess of agriculture”. All cereals are members of grass family (Poaceae) that are grown for their edible starchy seeds. The prominence of cereals as food plants is due to the following attributes: i. Greater adaptability and successful colonisation on every […]
Daily Current Affairs One Liners 27 December 2020 . India’s 1st Lithium Refinery Is Soon Going To Be Set Up In Gujarat The Refinery Will Process Lithium Ore To Produce Battery-Grade Material Punjab CM Captain Amarinder Singh Launched App & Portal Called ” PR Insight ” Legendary Urdu Poet & Critic Shamsur Rahman Faruqi Passed […]
Heterosis (hetero- different; sis – condition) G.H. Shull was the first scientist to use the term heterosis in 1912. The superiority of the F1 hybrid in performance over its parents is called heterosis or hybrid vigour. Vigour refers to increase in growth, yield, greater adaptability of resistance to diseases, pest and drought. Vegetative propagation is […]
Hybridization Hybridization is the method of producing new crop varieties in which two or more plants of unlike genetically constitution is all crossed together that result in a progeny called hybrid. Hybridization offers improvement in crop and is the only effective means of combining together the desirable characters of two or more varieties or species. […]
Organic Agriculture Organic farming is an alternative agricultural system which originated ealginates in the seaweed thatarly in the twentieth century in reaction to rapidly changing farming practices. It is a production system that sustains the health of the soils, ecosystems and people. It relies on ecological processes, biodiversity and cycles adapted to local conditions rather […]
Geographic Information System GIS is a computer system for capturing, storing, checking and displaying data related to positions on Earth’s surface. Also to manipulate, analyse, manage and present spacial or geographic data. GPS is a satellite navigation system used to determine the ground position of an object. It is a constellation of approximately 30 well […]
Environmental Impact Assessment (EIA) Environmental Impact Assessment is an environmental management tool. It helps to regulate and recommend optimal use of natural resources with minimum impact on ecosystem and biotic communities. It is used to predict the environmental consequences of future proposed developmental projects (example: river projects, dams, highway projects) taking into account inter-related socio-economic, […]
Carbon capture and storage is a technology of capturing carbondioxide and injects it deep into the underground rocks to a depth of 1 km or more and it is an approach to mitigate global warming by capturing CO2 from large point sources such as industries and power plants and subsequently storing it instead of releasing […]
Endemic species are plants and animals that exist only in one geographic region. Species can be endemic to large or small areas of the earth. Some are endemic to a particular continent, some to a part of a continent and others to a single island. Any species found restricted to a specified geographical area is […]
Conservation India due to its topography, geology and climate patterns has diverse life forms. Now this huge diversity is under threat due to many environmental issues for this conservation becomes an important tool by which we can reduce many species getting lost from our native land. By employing conservation management strategies like germplasm conservation, in […]
Invasion of alien or introduced species disrupts ecosystem processes, threaten biodiversity, reduce native herbs, thus reducing the ecosystem services (benefits). During eradication of these species, the chemicals used increases greenhouse gases. Slowly they alter ecosystem, micro climate and nature of soil and make it unsuitable for native species and create human health problems like allergy, […]
Afforestation is planting of trees where there was no previous tree coverage and the conversion of non-forested lands into forests by planting suitable trees to retrieve the vegetation. Example: Slopes of dams afforested to reduce water runoff, erosion and siltation. It can also provide a range of environmental services including carbon sequestration, water retention. Afforestation […]
Deforestation is one of the major contributors to enhance green house effect and global warming. The conversion of forested area into a non-forested area is known as deforestation. Forests provide us many benefits including goods such as timber, paper, medicine and industrial products. The causes are • The conversion of forests into agricultural plantation and […]
Agro forestry Agroforestry is an integration of trees, crops and livestock on the same plot of land. The main objective is on the interaction among them . Example: intercropping of two or more crops between different species of trees and shrubs, which results in higher yielding and reducing the operation costs. This intentional combination of […]
Ozone layer is a region of Earth’s stratosphere that absorbs most of the Sun’s ultra violet radiation. The ozone layer is also called as the ozone shield and it acts as a protective shield, cutting the ultraviolet radiation emitted by the sun. Just above the atmosphere there are two layers namely troposphere (the lower layer) […]
Green House Effect is a process by which radiant heat from the sun is captured by gases in the atmosphere that increase the temperature of the earth ultimately. The gases that capture heat are called CH4 20% CO2 60% Green House Gases which include carbon dioxide CFC 14% (CO2), methane (CH4), Nitrous Oxide (N2O) and […]
Types of Kitchen and Kitchen Layouts: Kitchens are the heart of any food service. A kitchen is a room or part of a room used for cooking and food preparation. The kitchens in food service operations are generally larger and equipped with bigger and more heavyduty equipment than a the residential kitchen. For example, a […]
Daily Current Affairs – 25 December 2020. 25 December : Good Governance Day 24 December : National Consumer Day Theme 2020 : ” New Features Of Consumer Protection Act , 2019 ” Karnataka Govt Has Unveiled The ” FRUITS ” Portal For Farmers FRUITS : Farmer Registration & Unified Beneficiary Information System VP Venkaiah Naidu […]
Plant Succession We very often see that forests and lands in our areas are drastically affected by natural calamities (Flood, earthquake) and anthropogenic activities (Fire, over grazing, cutting of trees). Due to these reasons all plants of an area are destroyed and the areas become nude. When we observe this area, over a period of […]
Adayar Poonga is located in Chennai and covers an area around a total of 358 acres of Adayar creek and estuary, of which 58 acres were taken up for eco restoration under the auspices of Government of Tamil Nadu. It is maintained by Chennai Rivers Restoration Trust (CRRT).This was a dumping site previously. Presently it […]