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Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. [1] Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least ...
Most crops are harvested as food for humans or fodder for livestock. Important non-food crops include horticulture, floriculture, and industrial crops. Horticulture crops include plants used for other crops (e.g. fruit trees). Floriculture crops include bedding plants, houseplants, flowering garden and pot plants, cut cultivated greens, and cut ...
Managing crop residues is important in most systems. Some of the nutrients contained in these dead tissues are made available to crops during decomposition, [8] reducing the need for fertiliser inputs. Leaving residues in place also increases the soil organic matter (SOM), which has a number of benefits. [9]
Farming is one of the few industries in which families (who often share the work and live on the premises) are also at risk for injuries, illness, and death. Agriculture is the most dangerous industry for young workers, accounting for 42% of all work-related fatalities of young workers in the U.S. between 1992 and 2000.
Agricultural productivity is an important component of food security. [4] Increasing agricultural productivity through sustainable practices can be an important way to decrease the amount of land needed for farming and slow environmental degradation and climate change through processes like deforestation. [5]
Sustainable agriculture consists of environment friendly methods of farming that allow the production of crops or livestock without causing damage to human or natural systems. It involves preventing adverse effects on soil, water, biodiversity, and surrounding or downstream resources, as well as to those working or living on the farm or in ...
The negative impact of agriculture is an old issue that remains a concern even as experts design innovative means to reduce destruction and enhance eco-efficiency. [2] Animal agriculture practices tend to be more environmentally destructive than agricultural practices focused on fruits, vegetables and other biomass. The emissions of ammonia ...
After several thousand years of selective breeding, the hemisphere's most important crop, maize, was more productive than Old World grain crops. Maize produced two and one-half times more calories per given land area than wheat and barley. [13]