Conservation Tillage for Sustainable Agriculture: Tropics Versus Temperate Environments

Lai, R (1989) Conservation Tillage for Sustainable Agriculture: Tropics Versus Temperate Environments. Advances in Agronomy, 42. pp. 85-197.

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This chapter discusses the relation between conservation tillage and sustainable agriculture, and identifies appropriate conservation tillage systems for different soils, crops, and agroecological region. Conservation tillage is a generic term encompassing many different soil management practices. It is generally defined as any tillage system that reduces loss of soil or water relative to conventional tillage and often a form of noninversion tillage that retains protective amounts of residue mulch on the surface. Timing of tillage operations can also be adjusted to facilitate operations during the periods of peak labor demand. The latter includes practices such as plowing at the end of rains in the tropics and fall plowing followed by spring disking in temperate zone. A no-till system has proved effective for soil and water conservation and for production of pastures and grain crops on Alfisols prone to crusting and accelerated erosion in Northern Territory, Australia. There are subtle differences in tropical vis-a-vis temperate regions that must be considered when assessing the applicability of the no-till system. It is found that for soils prone to crusting and hard-setting, shallow tillage without inversion and with the crop residue retained on the surface as mulch is the most appropriate conservation tillage.

Item Type: Article
Author Affiliation: Department of Agronomy Ohio State University Columbus, Ohio 43210
Subjects: Soil Science and Microbiology
Environmental Science
Divisions: General
Depositing User: Mr. SanatKumar Behera
Date Deposited: 21 Nov 2013 09:28
Last Modified: 21 Nov 2013 09:28
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