Effects of soil conservation measures on erosion rates and crop productivity on subtropical Ultisols in Yunnan Province, China

Barton, A. P.; Fullen, Michael A.; Mitchell, David J.; Hocking, T. J.; Liguang, Liu; Bo, Zhi Wu; Yi, Zheng; Zheng, Xiaoli

doi:10.1016/j.agee.2004.01.034

Cited by 127 publications

(75 citation statements)

References 16 publications

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“…Similar to both minimum tillage and cover cropping, mulching can increase soil aggregation (Mulumba and Lal 2008), and thus soil physical quality. In addition, the use of mulching also protects soils from direct impact by rainfall, greatly reducing nutrients and organic matter lost through soil erosion (Barton et al 2004).…”

Section: Crop Residue Managementmentioning

confidence: 99%

“…Producers control the distribution of nutrients through the same means as mono-specific growers and ranchers such as the application of inorganic and organic fertilizers and composts, growing trees, recycling of wastes, and improving animal diets which all have known benefits for improving productivity, water and nutrient use efficiency, and reducing GHG intensity of production (Kimaro et al 2015;Barton et al 2004;Zingore et al 2007). A key feature of nutrient management in mixed farming is that farmers transfer nutrient-rich materials -manure, residues, feeds -between production activities.…”

Section: Nutrient Managementmentioning

confidence: 99%

“…Mixed system farmers have the opportunity to improve feeding on farms, typically by supplying high protein feeds. Higher protein diets tend to increase productivity of livestock through improved digestibility and intake of crude protein (Bekele et al 2013) and decrease emissions intensity from milk and meat production (Barton et al 2004). However, the potential to plant legume species is often constrained by factors as varied as seed availability, access to knowledge, and land rights (Franzel et al 2014).…”

Section: Nutrient Managementmentioning

confidence: 99%

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A Qualitative Evaluation of CSA Options in Mixed Crop-Livestock Systems in Developing Countries

Thornton

Rosenstock

Förch³

et al. 2017

Climate Smart Agriculture

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The mixed crop-livestock systems of the developing world will become increasingly important for meeting the food security challenges of the coming decades. The synergies and trade-offs between food security, adaptation, and mitigation objectives are not well studied, however. Comprehensive evaluations of the costs and benefits, and the synergies and trade-offs, of different options in developing-country mixed systems do not exist as yet.Here we summarise what we know about the climate smartness of different alternatives in the mixed croplivestock systems in developing countries, based on published literature supplemented by a survey of experts. We discuss constraints to the uptake of different interventions and the potential for their adoption, and highlight some of the technical and policy implications of current knowledge and knowledge gaps.

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Section: Crop Residue Managementmentioning

confidence: 99%

Section: Nutrient Managementmentioning

confidence: 99%

Section: Nutrient Managementmentioning

confidence: 99%

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A Qualitative Evaluation of CSA Options in Mixed Crop-Livestock Systems in Developing Countries

Thornton

Rosenstock

Förch³

et al. 2017

Climate Smart Agriculture

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“…To combat this scourge, conservation agriculture is being promoted through reduced tillage, permanent soil cover and crop rotations (FAO 2008). The effectiveness of conservation agriculture for controlling excessive water run-off and soil erosion is well documented (Adams 1966;Alberts and Neibling 1994;Choudhary et al 1997;Lal 1998;Barton et al 2004;Scopel et al 2004), and it is expected that this contribution can be measured in terms of crop yield. Other benefits associated with conservation agriculture include reduction in the input costs for crop production and profit maximisation (Dumanski et al 2006;Knowler and Bradshaw 2007).…”

Section: Introductionmentioning

confidence: 99%

A meta-analysis of long-term effects of conservation agriculture on maize grain yield under rain-fed conditions

Rusinamhodzi

Corbeels²,

Wijk

et al. 2011

Agron. Sustain. Dev.

382

260

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Conservation agriculture involves reduced tillage, permanent soil cover and crop rotations to enhance soil fertility and to supply food from a dwindling land resource. Recently, conservation agriculture has been promoted in Southern Africa, mainly for maize-based farming systems. However, maize yields under rain-fed conditions are often variable. There is therefore a need to identify factors that influence crop yield under conservation agriculture and rain-fed conditions. Here, we studied maize grain yield data from experiments lasting 5 years and more under rain-fed conditions. We assessed the effect of long-term tillage and residue retention on maize grain yield under contrasting soil textures, nitrogen input and climate. Yield variability was measured by stability analysis. Our results show an increase in maize yield over time with conservation agriculture practices that include rotation and high input use in low rainfall areas. But we observed no difference in system stability under those conditions. We observed a strong relationship between maize grain yield and annual rainfall. Our meta-analysis gave the following findings: (1) 92% of the data show that mulch cover in high rainfall areas leads to lower yields due to waterlogging; (2) 85% of data show that soil texture is important in the temporal development of conservation agriculture effects, improved yields are likely on well-drained soils; (3) 73% of the data show that conservation agriculture practices require high inputs especially N for improved yield; (4) 63% of data show that increased yields are obtained with rotation but calculations often do not include the variations in rainfall within and between seasons; (5) 56% of the data show that reduced tillage with no mulch cover leads to lower yields in semi-arid areas; and (6) when adequate fertiliser is available, rainfall is the most important determinant of yield in southern Africa. It is clear from our results that conservation agriculture needs to be targeted and adapted to specific biophysical conditions for improved impact.

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“…So, the spatial distribution of soil nutrients under agricultural systems is affected by natural conditions of the soil formation such as parent material, topography, climate, biological activities and natural soil properties (Brady and Weil, 2000;Tang and Yang, 2006) as well as management practices (Huang, 2000;Barton et al, 2004;Atreya et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Assessment and Spatial Variability Mapping of Soil Available Phos-phorus and Potassium of Coarse-textured Soils in New Valley, Egypt Using Geostatistical Technique

2017

AJAS

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Assessment and understanding of soil available phosphorus (P) and potassium (K) content distribution is an important part of deciding whether or not the fertilization is appropriate or even necessary for a soil. So, the main objective of this study is to evaluate and map the spatial variability of the available soil P and K using the geostatistical technique. Georeferencing surface soil samples (0-25 cm) were collected from four sites representing course-textured soils in ElKharga and El-Dakhla oases. Ordinary Kriging (OK) technique was applied for the spatial interpolation of available soil P and K contents. The spatial distribution of available P and K was analyzed and mapped by Arc GIS (version 10.2.2). The results showed that concentrations of the available soil P and K ranged from 0.35 to 85.02 mg/kg and from 11 to 6204 mg/kg, respectively. The nugget-to-sill ratio suggested a strong spatial dependence for both available soil P and K in all sites of the study area, indicating that the available soil P and K were mainly controlled by intrinsic factors. The interpolation models varied for both P and K as well as from site to another site across the study area. Cross-validation proved that the chosen models were the best fitted semivariogram models to map spatial distribution of the available soil P and K. The produced maps of spatial distributions for soil P and K availability were characterized by high accuracy. So, site specific management can be planned and considered to be applied for this study area. Also, these maps can facilitate and help in making decisions for choose appropriate fertilization policies for these soils as well as to avoid adding fertilizers for sites which do not need to be fertilized. Our results confirmed that the integration of statistics, geostatistics and GIS provides a powerful tool to assess, describe and map the spatial variability of the available soil phosphorus and potassium. As well as to develop high resolution maps that may aid variable rate management (e.g. fertilization).

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Effects of soil conservation measures on erosion rates and crop productivity on subtropical Ultisols in Yunnan Province, China

Cited by 127 publications

References 16 publications

A Qualitative Evaluation of CSA Options in Mixed Crop-Livestock Systems in Developing Countries

A Qualitative Evaluation of CSA Options in Mixed Crop-Livestock Systems in Developing Countries

A meta-analysis of long-term effects of conservation agriculture on maize grain yield under rain-fed conditions

Assessment and Spatial Variability Mapping of Soil Available Phos-phorus and Potassium of Coarse-textured Soils in New Valley, Egypt Using Geostatistical Technique

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