Cultivation effects on the distribution of organic carbon, total nitrogen and phosphorus in soils of the semiarid region of Argentinian Pampas

Urioste, Ana María; Hevia, G.G.; Hepper, Estela Noemí; Antón, Laura; Bono, Alfredo; Buschiazzo, Daniel Eduardo

doi:10.1016/j.geoderma.2006.02.004

Cited by 65 publications

(40 citation statements)

References 21 publications

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“…1 and 4) indicate an immediate degradation of the highly-weathered soil after converting native vegetation to a cropping system. Similar findings have been reported by Urioste et al (2006) and Naklang et al (1999). This decrease could be avoided if sufficient chemical fertilizers were applied, as shown by the results from the NPK treatment of our experiment.…”

Section: Discussionsupporting

confidence: 92%

Improving fertility and productivity of a highly-weathered upland soil in subtropical China by incorporating rice straw

et al. 2010

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The transfer of rice straw from paddy fields to upland areas was proposed in our study as an innovative practice to improve the fertility of the highly-weathered and poor upland soils, as well as to mitigate environmental impacts from rice production system (e.g., the large application of chemical fertilizers, straw burning, CH 4 emission from decomposed straw) in the subtropical China. Data from an 8-year field experiment with sweet potato and rapeseed show that, the contents of organic matter and total nitrogen (N) in the surface soil (0-20 cm) with rice straw incorporation were increased by 13%, and the amounts of soil microbial biomass carbon (C), N, and phosphorus (P) by 18-43%, compared with the values when chemical fertilizers (NPK) were applied alone. Physical conditions and crop productivity of the test soil were effectively promoted with the straw incorporation, as indicated in significant changes in soil field water-holding capacity, total porosity, and bulk density in the 10-15 cm soil layer, and the rise (about 10% and 20%, respectively) of sweet potato and rapeseed yields. In conclusion, these results suggest that the practice shift from conventional rice straw management ('on the spot' incorporation) to upland incorporation is effective in improvement in fertility and productivity of the upland soil, which has potentials to reduce the amounts of chemical fertilizers applied and to increase soil C storage in farmlands in the region.

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Section: Discussionsupporting

confidence: 92%

Improving fertility and productivity of a highly-weathered upland soil in subtropical China by incorporating rice straw

et al. 2010

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“…There was also significant positive correlation (r=0.92 ** ) and (r=0.60 * ) between organic carbon and total nitrogen at 0-15 cm and 15-30 cm depth (Figure 6), respectively. This shows that the contribution of OC to total N is high [59][60][61]. This research strongly agreed with the findings of Boke [52] who obtained relatively higher content of total nitrogen from EBCSTS land use types.…”

Section: Soil Chemical Propertiessupporting

confidence: 90%

Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

Ketema¹

2015

APAR

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With the objectives of assessing the variation of soil quality indicators; two land use types: Enset based conservation tillage system (EBCSTS) and Cereal based conventional tillage system (CBCVTS) were selected in Gedeo zone, Bule woreda, Southern Ethiopia. A total of 48 composite and undisturbed (for bulk density determination) soil samples (2 land use types_4 blocks_3 replication_2 soil depth: 0-15 cm and 15-30 cm) were collected for laboratory analysis. The result showed that soil textural fractions (sand, p<0.001; silt, p = 0.003 and clay = p = 0.001) and soil pH (p<0.001) significantly varied with land use types. Moreover, soil moisture content (p<0.001), bulk density (p = 0.016, p = 0.002), SOC (p<0.001), TN (p<0.001) and CEC (p<0.001, p = 0.001) have shown significant variation with land use types and soil depth respectively. Sand and clay were higher in EBCSTS and CBCVTS, respectively. Higher amount of sand fraction was observed under 0-15 cm on EBCSTS and 15-30 cm on CBCVTS land use types. Lower soil bulk density (g cm -3 ) and higher amount of SOC (%), TN (%), soil pH, CEC (meq/100g soil) and SMC (%) were observed at 0-15 cm soil layer under the EBCSTS. Soil bulk density (g cm -3 ), soil pH and SMC (%) increased while SOC (%), CEC (meq/100g soil) and TN (%) decreased with soil depth in both land use types. Improvement in the soil quality under EBCSTS was due to the presence of less soil disturbance coupled with higher addition of organic matter (SOM) in the soil. Thus, through implementing EBCSTS, it is possible to protect and maintain soil qualities for sustainable soil management and cropping practices in the area.

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“…Anthropogenic activities have been shown to have profound impacts on soil C and TN status in recent decades . As the repository for approximately 60% of the global terrestrial C pool, soil organic matter (SOM) is sensitive to agricultural management such as tillage (Dikgwatlhe et al, 2014;Urioste et al, 2006), fertilization (Su et al, 2006;Yang et al, 2007), land use change (Gami et al, 2009;Post and Kwon, 2000;Wei et al, 2014aWei et al, , 2014b, grazing (Pringle et al, 2014;Silveira et al, 2013) and afforestation and deforestation Zeng et al, 2014). Contradictory results on the impacts of afforestation and land management change on soil C and TN sequestration have been reported Parras-Alcántara et al, 2014;Perez-Quezada et al, 2011;Zeng et al, 2014) due to the dependence on tree types, stand ages, soil properties and depth and previous land uses (Côté et al, 2000;Wei et al, 2012;Zeng et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Multi-scale variability of soil carbon and nitrogen in the middle reaches of the Heihe River basin, northwestern China

Gao

Lü

et al. 2016

CATENA

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Cultivation effects on the distribution of organic carbon, total nitrogen and phosphorus in soils of the semiarid region of Argentinian Pampas

Cited by 65 publications

References 21 publications

Improving fertility and productivity of a highly-weathered upland soil in subtropical China by incorporating rice straw

Improving fertility and productivity of a highly-weathered upland soil in subtropical China by incorporating rice straw

Soil Quality Variation under Enset based Conservation Tillage and Cereal based Conventional Tillage System in Southern Highlands of Ethiopia

Multi-scale variability of soil carbon and nitrogen in the middle reaches of the Heihe River basin, northwestern China

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