Crop rotation is the practice of growing a series of different types of crops in the same area across a sequence of growing seasons. This practice reduces the reliance of crops on one set of nutrients, pest and weed pressure, along with the probability of developing resistant pests and weeds.
In agriculture, monoculture is the practice of growing one crop species in a field at a time. Monoculture is widely used in intensive farming and in organic farming: both a 1,000-hectare cornfield and a 10-ha field of organic kale are monocultures. Monoculture of crops has allowed farmers to increase efficiency in planting, managing, and harvesting, mainly by facilitating the use of machinery in these operations, but monocultures can also increase the risk of diseases or pest outbreaks. Diversity can be added both in time, as with a crop rotation or sequence, or in space, with a polyculture or intercropping.
Sustainable agriculture is farming in sustainable ways meeting society's present food and textile needs, without compromising the ability for current or future generations to meet their needs. It can be based on an understanding of ecosystem services. There are many methods to increase the sustainability of agriculture. When developing agriculture within sustainable food systems, it is important to develop flexible business process and farming practices. Agriculture has an enormous environmental footprint, playing a significant role in causing climate change, water scarcity, water pollution, land degradation, deforestation and other processes; it is simultaneously causing environmental changes and being impacted by these changes. Sustainable agriculture consists of environment friendly methods of farming that allow the production of crops or livestock without damage to human or natural systems. It involves preventing adverse effects to soil, water, biodiversity, surrounding or downstream resources—as well as to those working or living on the farm or in neighboring areas. Elements of sustainable agriculture can include permaculture, agroforestry, mixed farming, multiple cropping, and crop rotation.
Horticulture is the cultivation of plants in gardens or greenhouses, as opposed to the field-scale production of crops characteristic of agriculture. It includes the cultivation of fruits, vegetables, nuts, seeds, herbs, sprouts, mushrooms, algae, flowers, seaweeds and non-food crops such as grass and ornamental trees and plants. It also includes plant conservation, landscape restoration, landscape and garden design, construction, and maintenance, and arboriculture, ornamental trees and lawns.
Intercropping is a multiple cropping practice that involves the cultivation of two or more crops simultaneously on the same field. The most common goal of intercropping is to produce a greater yield on a given piece of land by making use of resources or ecological processes that would otherwise not be utilized by a single crop.
In agriculture, succession planting refers to several planting methods that increase crop availability during a growing season by making efficient use of space and timing.
Urban agriculture refers to various practices of cultivating, processing, and distributing food in urban areas. The term also applies to the area activities of animal husbandry, aquaculture, beekeeping, and horticulture in an urban context. Urban agriculture is distinguished from peri-urban agriculture, which takes place in rural areas at the edge of suburbs.
In agriculture, polyculture is the practice of growing more than one crop species in the same space, at the same time. In doing this, polyculture attempts to mimic the diversity of natural ecosystems. Polyculture is the opposite of monoculture, in which only one plant or animal species is cultivated together. Polyculture can improve control of some pests, weeds, and diseases while reducing the need for pesticides. Intercrops of legumes with non-legumes can increase yields on low-nitrogen soils due to biological nitrogen fixation. However, polyculture can reduce crop yields due to competition between the mixed species for light, water, or nutrients. It complicates management as species have different growth rates, days to maturity, and harvest requirements: monoculture is more amenable to mechanisation. For these reasons, many farmers in large-scale agriculture continue to rely on monoculture and use crop rotation to add diversity to the system.
No-till farming is an agricultural technique for growing crops or pasture without disturbing the soil through tillage. No-till farming decreases the amount of soil erosion tillage causes in certain soils, especially in sandy and dry soils on sloping terrain. Other possible benefits include an increase in the amount of water that infiltrates into the soil, soil retention of organic matter, and nutrient cycling. These methods may increase the amount and variety of life in and on the soil. While conventional no-tillage systems use herbicides to control weeds, organic systems use a combination of strategies, such as planting cover crops as mulch to suppress weeds.
A market garden is the relatively small-scale production of fruits, vegetables and flowers as cash crops, frequently sold directly to consumers and restaurants. The diversity of crops grown on a small area of land, typically from under 0.40 hectares to some hectares, or sometimes in greenhouses, distinguishes it from other types of farming. A market garden is sometimes called a truck farm in the USA.
Agroforestry refers to any of a broad range of land use practices where pasture or crops are integrated with trees and shrubs. This intentional combination of agriculture and forestry has multiple benefits, such as greatly enhanced yields from staple food crops, enhanced farmer livelihoods from income generation, increased biodiversity, improved soil structure and health, reduced erosion, and carbon sequestration. Trees in agroforestry systems can also produce wood, fruits, nuts, and other useful products with economic and practical value. Agroforestry practices are especially prevalent in the tropics, especially in subsistence smallholdings areas with particular importance in sub-Saharan Africa. However, due to its multiple benefits, for instance in nutrient cycle benefits and potential for mitigating droughts, it has been adopted in the USA and Europe.
Organic horticulture is the science and art of growing fruits, vegetables, flowers, or ornamental plants by following the essential principles of organic agriculture in soil building and conservation, pest management, and heirloom variety preservation.
Farmer-managed natural regeneration (FMNR) is a low-cost, sustainable land restoration technique used to combat poverty and hunger amongst poor subsistence farmers in developing countries by increasing food and timber production, and resilience to climate extremes. It involves the systematic regeneration and management of trees and shrubs from tree stumps, roots and seeds. FMNR was developed by the Australian agricultural economist Tony Rinaudo in the 1980s in West Africa. The background and development are described in Rinaudo's book The Forest Underground.
Farm water, also known as agricultural water, is water committed for use in the production of food and fibre and collecting for further resources. In the US, some 80% of the fresh water withdrawn from rivers and groundwater is used to produce food and other agricultural products. Farm water may include water used in the irrigation of crops or the watering of livestock. Its study is called agricultural hydrology.
Indigenous horticulture is practised in various ways across all inhabited continents. Indigenous refers to the native peoples of a given area and horticulture is the practice of small-scale intercropping.
Chrysopogon nigritanus, more widely known by the taxonomic synonym Vetiveria nigritana, or the common name black vetivergrass, is a perennial grass species of the family Poaceae and therefore is also a monocotyledon. More specifically, Vetiveria nigritana is a very thick and tall type of grass that is deeply rooted within the ground and is usually used to protect crops and deter soil erosion. Vetiveria nigritana is also a native species to Africa and is most commonly seen in Nigeria, Northern Africa, Eastern Africa and tropical parts of Southern Africa. In addition, the plant, like other vetiver grasses, has been used in these regions due to its extreme drought tolerance, ability to grow in infertile soil and the fact that it can live under complete submergence. In fact, Vetiveria nigritana can thrive in a very diverse range of environmental and climatic conditions.
Chickpeas are a major pulse legume grown in Nepal, either by themselves or as an intercrop with maize or rice. Chickpeas are an important legume to the population, as it is the primary protein source for nearly 2 million Nepalese people. In 2013, Nepal imported approximately US$10.1 million in dried shelled chickpeas, mostly from Australia and also from Canada, creating a need to increase production for its own people and to balance bilateral trade. Chickpeas are an excellent source of protein, especially when compared to other legume pulses. They are high in unsaturated fatty acids and minerals, including calcium, magnesium, phosphorus and potassium.
In 1977 the Board of Governors of the World Bank approved Bura Irrigation and Settlement Project (BISP) in Kenya. The project area is situated just South of the Equator in the Lower Tana Basin. It lies on the west bank of the Tana River and falls within the administrative area of Tana River County. The project was an ambitious attempt of the government of Kenya, the World Bank and a few other donors to develop a remote area, create employment for thousands of people with a reasonable income and earn foreign exchange. Bura project would develop about 6,700 net irrigated ha over a 5 1⁄2 year period and settle on smallholdings about 5,150 landless poor families selected from all parts of Kenya. Physical and social infrastructure would be provided to support the settler and satellite population, expected to reach a total of 65,000 persons by 1985. The total cost of the project was estimated at 92 million dollars in 1977 prices. Actual construction started in 1978. During implementation the costs exploded from $17,500/= per family to $55,000/=, a new record for the World Bank. The largest cost increase was for the irrigation network (615%). The donors were not willing and the government was not able to raise the additional funds and subsequently the size of the project was scaled down from 6,700 ha to 3,900 and later to 2,500 ha, although the irrigation structures were completed for 6,700 ha. In this period 2,100 landless households from all over Kenya were settled in the scheme. They were allocated two plots of 0.625 ha and a garden of 0.05 ha. Each year they were to grow 1.25 ha cotton and 0.625 maize intercropped with cowpeas. Soon it was evident that the project would fail to achieve its objectives. Job creation was only 40% of the target, the economic rate of return was negative and the annual operating and maintenance costs exceeded the benefits. Even with net farm incomes of about 40% of the appraisal estimates in real terms, annual government subsidies amounted to about 1,000 dollars per settler. The project had an unreliable water supply and many buildings had foundation problems. After cotton crop failures due to pests in 1990 the project came virtually to a standstill as the management lacked the funds to finance cotton and maize crops. Most settlers deserted and the only the ones with nowhere to go remained in the scheme, living on famine relief and odd jobs. In the period 1993-2005 a number of times the government tried to revive a number of timesthe project, but all in vain. After 2005, rehabilitation and crop growing started in phases and since 2009-10 the tenants have been growing crops, although the cropping pattern comed down to no more than 50% of the projected crop intensity and the settlers have low incomes, if any. This is partly caused by the fact that the original cash crop, cotton, is no longer a profitable crop.
Carbon farming is a name for a variety of agricultural methods aimed at sequestering atmospheric carbon into the soil and in crop roots, wood and leaves. The aim of carbon farming is to increase the rate at which carbon is sequestered into soil and plant material with the goal of creating a net loss of carbon from the atmosphere. Increasing a soil's organic matter content can aid plant growth, increase total carbon content, improve soil water retention capacity and reduce fertilizer use. Carbon farming is one component of climate smart agriculture.
This glossary of agriculture is a list of definitions of terms and concepts used in agriculture, its sub-disciplines, and related fields, including horticulture, animal husbandry, agribusiness, and agricultural policy. For other glossaries relevant to agricultural science, see Glossary of biology, Glossary of ecology, Glossary of environmental science, and Glossary of botanical terms.
