The effect of reduced tillage agriculture on carbon dynamics in silt loam soils

D’Haene, Karoline; Sleutel, Steven; Neve, Stefaan De; Gabriëls, Donald; Hofman, Georges

doi:10.1007/s10705-008-9240-9

Cited by 37 publications

(18 citation statements)

References 31 publications

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“…Interestingly, data given in Johnson et al (2005) and Franzluebbers (2005) are reduced to 4.7 and 2.9 Mg C ha -1 , respectively, when only studies giving data for this depth are considered. This illustrates the importance of considering at least the entire tilled depth in this type of studies, as recently demonstrated by Eriksen-Hamel (2008) andD'Haene et al (2009). Studies providing data beyond this depth could be of great value in this sense, and are scarce in the literature.…”

Section: Discussionmentioning

confidence: 80%

Carbon input differences as the main factor explaining the variability in soil organic C storage in no-tilled compared to inversion tilled agrosystems

et al. 2011

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Conversion to no-till (NT) is usually associated to increased soil organic carbon (SOC) stocks in comparison to inversion tillage (IT). However, an important and unexplained variability in the changes in SOC with NT adoption exists, which impedes accurate prediction of its potential for C sequestration. We performed a meta-analysis with pedo-climatic and crop factors observed to influence SOC storage under NT at local and regional scales, in order to determine those better explaining this variability at a global scale. We studied SOC stocks (0-30 cm) in an equivalent soil mass, climatic and soil characteristics in 92 NT-IT paired cases. A subbase with the 35 pairs providing C inputs was used to test their effect. Greater SOC stocks were observed with NT, with a smaller difference than often described (6.7%, i.e. 3.4 Mg C ha -1 ). Crop C inputs differences was the only factor significantly and positively related to SOC stock differences between NT and IT, explaining 30% of their variability. The variability in SOC storage induced by NT conversion seems largely related to the variability of the crop production response. Changes at the agroecosystem level, not only in soil, should be considered when assessing the potential of NT for C sequestration.

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Section: Discussionmentioning

confidence: 80%

Carbon input differences as the main factor explaining the variability in soil organic C storage in no-tilled compared to inversion tilled agrosystems

et al. 2011

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“…The SOC under MT × S wrm was statistically different from all other treatment combinations. Baker et al [30] and D' haene et al [31] showed that more SOC under MT or no tillage in comparison to extensive tillage. Naresh et al [32] reported that the combination of reduced tillage with crop residue retention increases the SOC in the top soil.…”

Section: Effects Of Tillage Practices and Crop Residue Retention On Smentioning

confidence: 99%

Effect of Tillage and Residue Retention on Soil Properties and Crop Yields in Wheat-Mungbean-Rice Crop Rotation under Subtropical Humid Climate

Salahin¹,

Alam²,

Mondol³

et al. 2017

OJSS

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The effects of conservation agriculture (CA) practices on soil properties along with crop yields of rice-based triple cropping systems have not been adequately assessed in Bangladesh. An experiment was conducted at Bangladesh Agricultural Research Institute, Gazipur, Bangladesh from 2009 to 2012 to assess the effects of tillage practices and crop residue retention on soil physical properties, soil organic carbon (SOC) and crop yields in a wheat-mungbeanrice system. Treatments consisted of three tillage practices (MT: minimum tillage; CT: conventional tillage and DT: deep tillage) and eight levels of crop residue management (S 0 -no residues retention, S r -retention of 30 cm rice straw, S m -whole mungbean stover retention, S W -30 cm wheat straw retention, S mr -whole mungbean stover & 30 cm rice straw retention, S rw -30 cm rice & wheat straw retention, S mw -whole mungbean stover & 30 cm wheat straw retention and S wrm -30 cm wheat and rice straw along with whole mungbean stover retention) were applied in split plot design with three replications. Bulk density (BD) and porosity responded positively to MT and increased residue retention of all crops (p > 0.05). Minimum tillage and S wrm also significantly accumulated SOC (p < 0.05; 0.38% higher than DT with no residue retention) and retained soil moisture (p < 0.05). Minimum tillage practice performed better in upland crops (p < 0.05; wheat & mungbean yields) and CT outperformed MT in wetland rice crop (p < 0.05). The grain and straw yields of wheat and rice were also influenced by previous crop residue retentions (p < 0.05). The results, therefore, suggested that increased residue 2 retention with minimum tillage practices improved soil properties and yield of upland crops but with deeper tillage practices consistently maintained wetland rice production.

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“…The C mineralization experiment was started from undisturbed soil samples, because the crucial difference between soils under CT and ZT lies in the differences in soil structure. An incubation experiment with disturbed soils only would thus eliminate the inherent difference in soil quality between both systems (D'Haene et al 2009). The samples for C mineralization were collected in triplicates using stainless steel rings so that undisturbed samples were obtained.…”

Section: Soil Samplingmentioning

confidence: 99%

Soil carbon dynamics as influenced by tillage and crop residue management in loamy sand and sandy loam soils under smallholder farmers’ conditions in Malawi

Ngwira

Sleutel

2012

Nutr Cycl Agroecosyst

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Conservation agriculture (CA) characterised by minimal soil disturbance, permanent soil surface cover by dead or living plants and crop rotations is one way of achieving higher soil organic carbon (C) in agricultural fields. Sandy loam and loamy soil samples from zero tillage (ZT) and conventional tillage (CT) plots were taken from farmers' fields during the dry season in August 2006. Soil organic carbon (SOC) and soil organic nitrogen (SON), microbial biomass carbon (MB-C) and microbial biomass nitrogen (MB-N), C mineralization and SOC distribution in particle size fractions in 0-20 cm layer were evaluated. Forty eight farmers' fields were randomly sampled at four different locations in Central and Northern Malawi, representing ZT plots maintained for a different number of years, and ten fields under CT with similar soil type and crop grown were selected. SOC and SON in ZT fields were 44 and 41 % (4 years ZT) and 75 and 77 % (5 years ZT) higher, respectively, than CT plots. MB-C and MB-N in ZT fields were 16 and 44 % (4 years ZT) and 20 and 38 % (5 years ZT) higher, respectively, than CT plots. However, MB-C and MB-N in ZT fields were 27 and 25 % (2 years ZT) and 17 and 9 % (3 years ZT) lower than in CT plots. The proportion of the total organic C as microbial biomass C was relatively higher under CT than ZT treatments. The higher SOC and MB-C content in the ZT fields resulted in 10, 62, 57 % higher C mineralization rate in ZT plots of 3, 4 and 5 years of loamy sand soils and 35 % higher C mineralization rate in ZT plot of 2 years than CT of sandy loam soils in undisturbed soils in the laboratory. Simulating plough from the undisturbed soils that were used for C mineralization experiment resulted in linear curves indicating that all organic C was already depleted during the first incubation period. The relative distribution of soil organic matter (SOM) in silt and clay size fractions was strongly correlated (r = 0.907 and P B 0.01) with silt percentages. Easily degradable carbon pool (C A,f ) was correlated (r = 0.867 and P B 0.05) with organic carbon in sand size fraction. In developing viable conservation agriculture practices to optimize SOC content and long-term sustainability of maize production systems, priority should be given to the maintenance of C inputs, crop rotations and associations and also to reduced soil disturbance by tillage.

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The effect of reduced tillage agriculture on carbon dynamics in silt loam soils

Cited by 37 publications

References 31 publications

Carbon input differences as the main factor explaining the variability in soil organic C storage in no-tilled compared to inversion tilled agrosystems

Carbon input differences as the main factor explaining the variability in soil organic C storage in no-tilled compared to inversion tilled agrosystems

Effect of Tillage and Residue Retention on Soil Properties and Crop Yields in Wheat-Mungbean-Rice Crop Rotation under Subtropical Humid Climate

Soil carbon dynamics as influenced by tillage and crop residue management in loamy sand and sandy loam soils under smallholder farmers’ conditions in Malawi

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