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Agriculture and its impact on ecosystem
Title: Agriculture and its impact on ecosystem
Category: Society & Culture / Environment
Details: Words: 1830 | Pages: 7.8 (approximately 235 words/page)
Agriculture and its impact on ecosystem
Agriculture and its impact on ecosystem A.Agricultural farmland as a unstable ecosystem: An agricultural ecosystem is established and manipulated by human beings in various ways to suit their own purposes, e.g . for food production.
This ecosystem is unstable in many aspects: 1.Continual removal of soil mineral nutrients due to absorption by crops and weeds. Natural recycling of minerals is hindered as a result of harvesting and subsequent export of biomass from the ecosystem.
2.…showed first 75 words of 1830 total…
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…showed last 75 words of 1830 total…cultural practise: -crop rotation -mixed cropping à growing different species of crops in alternate rows so as to intersperse them and slow down the spread of pests.
Advantages of biological control: (1)no pollution (2)once the host - parasite ( or predator and prey ) relationship is established , no further action is needed.
(3)Those predator-prey, parasite and host relations are highly specific. Not affecting the useful crop plants.
(4)Its' a relatively long term control.
(5)Cheap (if successful) (6)Safe in action.
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275 words per page