CRITICAL REVIEW ON SOIL TILLAGE AND ITS INFLUENCE ON SOIL PROPERTIES AND CROP GROWTH

Suwardji, Suwardji (2018) CRITICAL REVIEW ON SOIL TILLAGE AND ITS INFLUENCE ON SOIL PROPERTIES AND CROP GROWTH. S3 thesis, upt. perpustakaan.

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Abstract

Soil structural decline has been observed over much of arable world wide (Stoneman 1962; 1973; Clarke, Greenland & Quirk 1967; Hunt 1980; Harte 1984; Clarke 1986). A recent report has indicated that soil stuctural decline is becoming a world wide problem (Lal and Stewart, 1992). Intensive cultivation is considered to be a major cause of structural decline on agricultural land. This is attributed to a decrease in the amount of organic matter in the surface soil (Greenland 1971; Tisdall, Cockroft & Uren 1978) which acts as a stabilising agent for soil aggregates (Tisdall & Oades 1980; Tisdall & Oades 1982). As a result, surface soils are prone to aggregate breakdown when subjected to direct impact of rain droplets or when mechanically worked. This may lead to greater surface runoff and greater potential for soil erosion. Therefore, there is a special need to explore farming systems that reverse this decline in soil structure, but are capable of maintaining current levels of agricultural production. In recent years, much attention has been directed toward conservation tillage (Suwardji and Eberbach, 1996; 1998; Suwardji and Kusnarta, 2000). Among the methods proposed, no-tillage(NT)/direct drilling (DD) and reduced tillage (RC) have both become popular for the conservation of soil structure in cropping systems. Numerous reports have revealed that these methods may on some soil types, slow the rate of soil structure degradation (Reeves & Ellington 1974).

Item Type: Thesis (S3)
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian
Depositing User: Wiwin Kartikawati
Date Deposited: 31 Mar 2018 03:02
Last Modified: 31 Mar 2018 03:02
URI: http://eprints.unram.ac.id/id/eprint/1837

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