The role of soil organic matter in maintaining soil quality in continuous cropping systems

Reeves, D. W.

doi:10.1016/s0167-1987(97)00038-x

Cited by 1,021 publications

(601 citation statements)

References 128 publications

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“…The maintenance and improvement of soil quality are critical for sustained agricultural productivity (Reeves, 1997). The effect of vineyard floor management practices on organic matter content was largely confined to the 0 to 200 mm soil layer (Sicher et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Cover Crop Management in a Chardonnay/99 Richter Vineyard in the Coastal Region, South Africa. 3. Effect of Different Cover Crops and Cover Crop Management Practices on Organic Matter and Macro-nutrient Content of a Medium-textured Soil

Fourie

Agenbag

Louw

2016

SAJEV

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The trial was conducted over a period of 10 years (1993/94 to 2002/03) on a medium-textured soil in a Chardonnay/99 Richter vineyard near Stellenbosch (33°55'S, 18°52'E), which is situated in the Coastal wine grape region of the Western Cape, South Africa. Sixteen treatments, consisting of three cereals and five legumes, managed according to two cover crop management practices, were included. These treatments were compared to a control, in which no cover crop was sown and the weeds were controlled mechanically in the work row and chemically in the vine row from bud break to harvest (approximately the first week of February). A treatment in which no cover crop was sown and full-surface post-emergence chemical weed control was applied from before bud break to harvest (BB) (weedchem) was also included. After five seasons, the soil organic matter (SOM) content in the 0 to 300 mm soil layer increased in all the cover crop management treatments. In weedchem and in the control, SOM remained unchanged and decreased by 16% respectively. The SOM content in the 0 to 150 mm soil layer of the cover crop treatments was, with the exception of Vicia dasycarpa Ten. (grazing vetch), significantly higher than that of the mechanically-cultivated control after a period of 10 years. The SOM content in the 0 to 300 mm soil layer of Secale cereale L. v. Henog and the treatments in which the N-fixing cover crops were sown (with the exception of grazing vetch) was significantly higher than that of weedchem. The total inorganic N (TIN) concentration of the 0 to 150 mm soil layer in the BB treatments of the two Medicago species and Trifolium subterraneum L. v. Woogenellup, as measured for the 1996/97 season during full bloom of the grapevines, was significantly higher than that of the control, weedchem, and the treatments in which full-surface chemical control was applied after bud break (AB). The TIN concentration of the 0 to 600 mm soil layer in the AB treatment of a species, measured after harvest in 2002/03, tended to be higher than that of the BB treatment of that species. The applied treatments had no significant effect on the exchangeable K, Ca and Mg.

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Section: Introductionmentioning

confidence: 99%

Cover Crop Management in a Chardonnay/99 Richter Vineyard in the Coastal Region, South Africa. 3. Effect of Different Cover Crops and Cover Crop Management Practices on Organic Matter and Macro-nutrient Content of a Medium-textured Soil

Fourie

Agenbag

Louw

2016

SAJEV

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“…Maintenance and improvement of soil quality is critical if agricultural productivity and environmental quality is to be sustained for future generations (Reeves, 1997). The use of cover crops in vineyards reduces water runoff and erosion (Louw & Bennie, 1992) restricts evaporation from the soil surface (Van Huyssteen et al, 1984), conserves soil water (Buckerfield & Webster, 1996), and reduces temperature fluctuations in the soil (Van Huyssteen et al, 1984).…”

mentioning

confidence: 99%

Cover Crop Management in a Chardonnay/99 Richter Vineyard in the Coastal Region, South Africa. 2. Effect of Different Cover Crops and Cover Crop Management Practices on Grapevine Performance

Fourie

Louw

Agenbag

2017

SAJEV

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“…Total organic carbon is usually considered as one of the most important properties of soils because of its impact on ecosystem sustainability, affecting other physical, chemical, and biological characteristics of the soil [39]. Enzyme activity can provide an indication of quantitative changes in the organic matter of soil [40].…”

Section: Relationships Between Enzymes and Nutrient Contentmentioning

confidence: 99%

Sedimentary Enzyme Kinetics of Land/Water Ecotones with Reed Domination

Wang

Yin²,

Wang

2010

CLEAN Soil Air Water

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Land/water ecotones, the transitional boundary zone between terrestrial and aquatic ecosystems, can effectively trap and assimilate nutrients from external sources. The changes of nutrient cycling will cause a response in enzyme activity. In this paper, the enzyme kinetics of land/water ecotones in a shallow eutrophic wetland in China, dominated by a reed (Phragmites australis) community, are studied. The results indicate that land/water ecotones exhibit a strong filtration function and nutrient factor is an important feature affecting the distribution of enzymes in the transect of the littoral zone. The obvious spatial differences of enzyme activities and nutrients are present in the transect of the reed beds. The land area is the hot zone, where significant changes in enzyme activity occur. T-test results show that the landward spot, 1 m away from the water-land interface, is quite different from other spots, and the 1 m spot is the hot spot where great biochemical change happens. The principal component analysis of the environmental variables shows that nutrient factors have an important affect on enzyme distribution in the transect of the littoral zone. The nutrient factor explains about 54% of the observed variance. In particular, TOC (total organic carbon) correlates with the other five factors (TN; total nitrogen, TP; total phosphorus, phosphatase, b-glucosidase, and urease) with correlative coefficients of 0.932, 0.595, 0.488, 0.433, and -0.468, respectively. The results indicate that TOC is a very important factor in Baiyangdian wetlands.

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The role of soil organic matter in maintaining soil quality in continuous cropping systems

Cited by 1,021 publications

References 128 publications

Cover Crop Management in a Chardonnay/99 Richter Vineyard in the Coastal Region, South Africa. 3. Effect of Different Cover Crops and Cover Crop Management Practices on Organic Matter and Macro-nutrient Content of a Medium-textured Soil

Cover Crop Management in a Chardonnay/99 Richter Vineyard in the Coastal Region, South Africa. 3. Effect of Different Cover Crops and Cover Crop Management Practices on Organic Matter and Macro-nutrient Content of a Medium-textured Soil

Cover Crop Management in a Chardonnay/99 Richter Vineyard in the Coastal Region, South Africa. 2. Effect of Different Cover Crops and Cover Crop Management Practices on Grapevine Performance

Sedimentary Enzyme Kinetics of Land/Water Ecotones with Reed Domination

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