干旱区生态环境知识资源中心(Arid): Effects of long-term grazed crop and pasture systems under no-till on organic matter fractions and selected quality parameters of soil in the Overberg, South Africa

Arid

DOI	10.1080/02571862.2019.1640298
	Effects of long-term grazed crop and pasture systems under no-till on organic matter fractions and selected quality parameters of soil in the Overberg, South Africa
	Smith, Jacques D., V; Strauss, Johann A.; Hardie, Ailsa G.
通讯作者	Hardie, AG
来源期刊	SOUTH AFRICAN JOURNAL OF PLANT AND SOIL
ISSN	0257-1862
EISSN	2167-034X
出版年	2020
卷号	37 期号:1 页码:1-10
英文摘要	There is limited soil research on semi-arid, grazed no-till crop and pasture systems. The long-term (10 years) effect of three grazed no-till dryland crop and pasture rotation systems, and perennial lucerne pasture were assessed on soil carbon (C) and nitrogen (N) stocks, soil organic matter functional pools and selected soil quality parameters in the Overberg, South Africa. The largest soil C and N stocks (0-30 cm) were found in crop-pasture systems containing wheat and medic/clover (70.2-74.9 Mg C ha(-1) and 8.3-8.4 Mg N ha(-1)), compared with perennial lucerne pasture (63.4 Mg C ha(-1) and 7.7 Mg N ha(-1)) or cropping-only systems (54.7-58.9 Mg C ha(-1) and 6.3-6.7 Mg N ha(-1)). Significantly higher labile C and N (free particulate organic matter fraction) contents were observed in crop-pasture systems (1.37-1.74 g C kg(-1) and 0.107-0.110 g N kg(-1)) than in continuous cropping systems (0.9-1.0 g C kg(-1) and 0.042-0.045 g N kg(-1)), attributed to higher annual C and N inputs and lower extent of soil disturbance. Significant positive correlations were found between soil C and N functional pools and soil quality parameters (soil respiration, effective cation exchange capacity and aggregate stability) and wheat yields. The results show the importance of the medic/clover pasture and wheat rotations in enhancing soil quality in the Overberg region.
英文关键词	conservation agriculture crop rotation soil C stocks soil organic matter functional pools soil quality
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000497142300001
WOS关键词	CARBON FRACTIONS ; PRODUCTIVITY ; MANAGEMENT ; DENSITY ; ROTATION ; STOCKS ; LIGHT ; RATES
WOS类目	Agriculture, Multidisciplinary ; Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334185
作者单位	[Smith, Jacques D., V; Hardie, Ailsa G.] Stellenbosch Univ, Dept Soil Sci, Stellenbosch, South Africa; [Strauss, Johann A.] Western Cape Dept Agr, Elsenburg, South Africa
推荐引用方式 GB/T 7714	Smith, Jacques D., V,Strauss, Johann A.,Hardie, Ailsa G.. Effects of long-term grazed crop and pasture systems under no-till on organic matter fractions and selected quality parameters of soil in the Overberg, South Africa[J],2020,37(1):1-10.
APA	Smith, Jacques D., V,Strauss, Johann A.,&Hardie, Ailsa G..(2020).Effects of long-term grazed crop and pasture systems under no-till on organic matter fractions and selected quality parameters of soil in the Overberg, South Africa.SOUTH AFRICAN JOURNAL OF PLANT AND SOIL,37(1),1-10.
MLA	Smith, Jacques D., V,et al."Effects of long-term grazed crop and pasture systems under no-till on organic matter fractions and selected quality parameters of soil in the Overberg, South Africa".SOUTH AFRICAN JOURNAL OF PLANT AND SOIL 37.1(2020):1-10.