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Slash-and-burn
Slash-and-burn agriculture is a form of shifting cultivation that involves the cutting and burning of plants in a forest or woodland to create a Field (agriculture), field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed vegetation, or "slash", is then left to dry, usually right before the rainiest part of the year. Then, the Biomass (ecology), biomass is burned, resulting in a nutrient-rich layer of ash which makes the Soil fertility, soil fertile, as well as temporarily eliminating weed and pest species. After about three to five years, the plot's productivity decreases due to depletion of nutrients along with weed and pest invasion, causing the farmers to abandon the field and move to a new area. The time it takes for a swidden to recover depends on the location and can be as little as five years to more than twenty years, after which the plot can be slashed and burned again, repeating the cycle. In Bangladesh and India, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Svedjebruk
Slash-and-burn agriculture is a form of shifting cultivation that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed vegetation, or "slash", is then left to dry, usually right before the rainiest part of the year. Then, the biomass is burned, resulting in a nutrient-rich layer of ash which makes the soil fertile, as well as temporarily eliminating weed and pest species. After about three to five years, the plot's productivity decreases due to depletion of nutrients along with weed and pest invasion, causing the farmers to abandon the field and move to a new area. The time it takes for a swidden to recover depends on the location and can be as little as five years to more than twenty years, after which the plot can be slashed and burned again, repeating the cycle. In Bangladesh and India, the practice is known as jhum or jhoom. Slash-and-burn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, with half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. Estimates vary widely as to the extent of deforestation in the tropics. In 2019, nearly a third of the overall tree cover loss, or 3.8 million hectares, occurred within humid tropical primary forests. These are areas of mature rainforest that are especially important for biodiversity and carbon storage. The direct cause of most deforestation is agriculture by far. More than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shifting Cultivation
Shifting cultivation is an agricultural system in which plots of land are cultivated temporarily, then abandoned while post-disturbance fallow vegetation is allowed to freely grow while the cultivator moves on to another plot. The period of cultivation is usually terminated when the soil shows signs of exhaustion or, more commonly, when the field is overrun by weeds. The period of time during which the field is cultivated is usually shorter than the period over which the land is allowed to regenerate by lying fallow. This technique is often used in LEDCs (Less Economically Developed Countries) or LICs (Low Income Countries). In some areas, cultivators use a practice of slash-and-burn as one element of their farming cycle. Others employ land clearing without any burning, and some cultivators are purely human migration, migratory and do not use any cyclical method on a given plot. Sometimes no slashing at all is needed where regrowth is purely of grasses, an outcome not uncommon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jhum
Jhum or Jhoom cultivation is the form of slash-and-burn agriculture that is practised in certain parts of Northeast India and by the indigenous communities in Chittagong Hill Tracts of Bangladesh. It is a traditional agricultural technique that involves clearing land of trees and other vegetation, burning it, and then cultivating it for a set number of years. Technique and crops In the month of January, the jhummias cut down the forest on the slope of the hill. Afterwards, they clean the land and dry the wood, bamboo and plants they have cut down in the sun. Later around March–April, the dried material is burnt and made suitable for jhum cultivation. Next, around May the jhummias dig holes in the burnt jhum soil and sow different types of seeds, including paddy, sweet pumpkin, cotton, sesame, and maize, which are cultivated several months later, depending on the particular crop. Jhum cultivation does not take place in some years due to drought. Yields are expected to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northeast India
Northeast India, officially the North Eastern Region (NER), is the easternmost region of India representing both a geographic and political Administrative divisions of India, administrative division of the country. It comprises eight States and union territories of India, states—Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland and Tripura (commonly known as the "Seven Sisters"), and the "brother" state of Sikkim. The region shares an international border of 5,182 kilometres (3,220 mi) (about 99 per cent of its total geographical boundary) with several neighbouring countries – it borders China to the north, Myanmar to the east, Bangladesh to the south-west, Nepal to the west, and Bhutan to the north-west. It comprises an area of , almost 8 per cent of that of India. The Siliguri Corridor connects the region to the Mainland India, rest of mainland India. The states of North Eastern Region are officially recognised under the North Eastern Council (NEC), co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tripura
Tripura () is a States and union territories of India, state in northeastern India. The List of states and union territories of India by area, third-smallest state in the country, it covers ; and the seventh-least populous state with a population of 3.67 million. It is bordered by Assam and Mizoram to the east and by Bangladesh to the north, south and west. Tripura is divided into List of districts of Tripura, 8 districts and 23 sub-divisions, where Agartala is the capital and the largest city in the state. Tripura has 19 different tribal communities with a majority Bengalis, Bengali population. Bengali language, Bengali, Indian English, English and Kokborok are the state's official languages. The area of modern Tripura — ruled for several centuries by the Manikya Dynasty — was part of the Tripuri Kingdom (also known as Hill Tippera). It became a princely state under the British Raj during its tenure, and acceded to independent India in 1947. It merged with India in 1949 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cash Crop
A cash crop, also called profit crop, is an Agriculture, agricultural crop which is grown to sell for profit. It is typically purchased by parties separate from a farm. The term is used to differentiate a marketed crop from a staple crop ("subsistence crop") in subsistence agriculture, which is one fed to the producer's own livestock or grown as food for the producer's family. In earlier times, cash crops were usually only a small (but vital) part of a farm's total yield, while today, especially in Developed country, developed countries and among Smallholding, smallholders almost all crops are mainly grown for revenue. In the Least developed country, least developed countries, cash crops are usually crops which attract demand in more developed nations, and hence have some export value. Prices for major cash crops are set in international trade markets with global markets, global scope, with some local variation (termed as "basis") based on Cargo, freight costs and local supply a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shovel
A shovel is a tool used for digging, lifting, and moving bulk materials, such as soil, coal, gravel, snow, sand, or ore. Most shovels are hand tools consisting of a broad blade fixed to a medium-length handle. Shovel blades are usually made of sheet steel or hard plastics and are very strong. Shovel handles are usually made of wood (especially specific varieties such as ash or maple) or glass-reinforced plastic (fiberglass). Hand shovel blades made of sheet steel usually have a folded seam or hem at the back to make a socket for the handle. This fold also commonly provides extra rigidity to the blade. The handles are usually riveted in place. A T-piece is commonly fitted to the end of the handle to aid grip and control where the shovel is designed for moving soil and heavy materials. These designs can all be easily mass-produced. The term ''shovel'' also applies to larger excavating machines called power shovels, which serve the same purpose—digging, lifting, and mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoe (tool)
A hoe is an ancient and versatile agricultural and horticultural hand tool used to shape soil, remove weeds, clear soil, and harvest root crops. Shaping the soil includes piling soil around the base of plants ( hilling), digging narrow furrows ( drills) and shallow trenches for planting seeds or bulbs. Weeding with a hoe includes agitating the surface of the soil or cutting foliage from roots, and clearing the soil of old roots and crop residues. Hoes for digging and moving soil are used to harvest root crops such as potatoes. Types There are many kinds of hoes of varied appearances and purposes. Some offer multiple functions, while others have only a singular and specific purpose. There are two general types of hoe: draw hoes for shaping soil, and scuffle hoes for weeding and aerating soil. A draw hoe has a blade set at approximately a right angle to the shaft. The user chops into the ground and then pulls (draws) the blade towards them. Altering the angle of the hand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machete
A machete (; ) is a broad blade used either as an agricultural implement similar to an axe, or in combat like a long-bladed knife. The blade is typically long and usually under thick. In the Spanish language, the word is possibly a diminutive form of the word ''macho'', which was used to refer to sledgehammers. Alternatively, its origin may be ''makhaira, machaera'', the name given by the Greeks and Romans to the falcata. It is the origin of the English language equivalent term ''matchet'', though this is rarely used. In much of the English-speaking Caribbean, such as Jamaica, Barbados, Guyana, Grenada, and Trinidad and Tobago, the term ''cutlass'' is used for these agricultural tools. Uses Agriculture In various tropical and subtropical countries, the machete is frequently used to cut through rainforest undergrowth and for agricultural purposes (e.g. cutting sugar cane). Besides this, in Latin America a common use is for such household tasks as cutting large foodstu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Usufruct
Usufruct () is a limited real right (or ''in rem'' right) found in civil law and mixed jurisdictions that unites the two property interests of ''usus'' and ''fructus'': * ''Usus'' (''use'', as in usage of or access to) is the right to use or enjoy a thing possessed, directly and without altering it. * '' Fructus'' (''fruit'', as in the fruits of production) is the right to derive profit from a thing possessed: for instance, by selling crops, leasing immovables or annexed movables, taxing for entry, and so on. A usufruct is either granted in severalty or held in common ownership, as long as the property is not damaged or destroyed. The third civilian property interest is ''abusus'' (literally ''abuse''), the right to alienate the thing possessed, either by consuming or destroying it (e.g., for profit), or by transferring it to someone else (e.g., sale, exchange, gift). Someone enjoying all three rights has full ownership. Generally, a usufruct is a system in which a person or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistory
Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared years ago. It took thousands of years for writing systems to be widely adopted, with writing having spread to almost all cultures by the 19th century. The end of prehistory therefore came at different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. It is based on an old conception of history that without written records there could be no history. The most common conception today is that history is based on evidence, however the concept of prehistory hasn't been completely discarded. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
