Influence of alley copping system on AM fungi, microbial biomass C and yield of finger millet, peanut and pigeon pea

Balakrishna, A. N.; Lakshmipathy, R.; Bagyaraj, D. J.; Ashwin, R.

doi:10.1007/s10457-016-9949-4

Cited by 12 publications

(3 citation statements)

References 17 publications

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“…Mycorrhizal fungi and fine roots transfer large proportions of primary production into soils, but the estimates vary substantially across studies (Janssens et al, ; Pausch & Kuzyakov, ; Sommer, Dippold, Flessa, & Kuzyakov, ). Additionally, the biological N fixation and nutrient mobilization from deep soils have increased soil fertility, prompting C sequestration (Araujo, Iwata, Jr, & Xavier, ; Balakrishna, Lakshmipathy, Bagyaraj, & Ashwin, ; Vallejo, Roldan, & Dick, ). Trees in alley cropping and windbreaks modify microclimate, increase soil moisture, and lower temperate, resulting in slow C decomposition and increasing crop production at the same time.…”

Section: Resultsmentioning

confidence: 99%

Agroforestry systems: Meta‐analysis of soil carbon stocks, sequestration processes, and future potentials

et al. 2018

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Agroforestry (AF) has the potential to restore degraded lands, provide a broader range of ecosystem goods and services such as carbon (C) sequestration and high biodiversity, and increase soil fertility and ecosystem stability through additional C input from trees, erosion prevention, and microclimate improvement. Advantages and processes for global C sequestration in AF are unknown. We used a meta-analysis of 427 soil C stock data pairs grouped into four main AF systems-alley cropping, windbreaks, silvopastures, and homegardens-and evaluated changes in AF and adjacent control cropland or pasture. Mean soil C stocks in AF (1-m depth) were 126 Mg C·ha −1 , which is 19% more than that in cropland or pasture. The highest C stocks in soil were in subtropical homegardens, AF with younger trees, and topsoil (0-20 cm). Increased soil C stocks in AF were lower than aboveground C stocks in most AF systems, except alley cropping. Homegardens stored the highest C in both aboveground and belowground, especially in the subsoil (20-100 cm). Advantages of AF ecosystem services focusing on mechanisms of belowground C sequestration were analyzed. AF could store 5.3 × 10 9 Mg additional C in soil on 944 Mha globally, with most in the tropics and subtropics. AF systems could greatly contribute to global soil C sequestration if used in larger areas. Future investigations of AF should include (a) mechanistic-and process-based studies (instead of common monitoring and inventories), (b) models linking forest and crop growth with soil water and C and nutrient cycling, and (c) accurate assessments of the AF area worldwide based on the remote sensing approaches.

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Section: Resultsmentioning

confidence: 99%

Agroforestry systems: Meta‐analysis of soil carbon stocks, sequestration processes, and future potentials

et al. 2018

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“…These results suggest that the observed increased topsoil SOC stocks (0-0.30 m) over 8 years (2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018) under compost fertilisation can potentially lead to a SOC stabilisation, but this effect might be limited to depths less than 0.30 m. In contrast, mineral fertilisation might have a positive effect on SOC stabilisation in subsoil layers. The mechanisms for this could be the same as those discussed under organic rotation, i.e., higher yields followed by a higher amount of fresh crop residue deposits, which are potentially incorporated to the soil through tillage events (Bilsborrow et al, 2013;Schellekens et al, 2013) and greater belowground biomass followed by greater rhizo-deposition, and soil microbial activities (Araujo et al, 2012;Balakrishna et al, 2017). The Py-GC-MS results reflected such assumptions.…”

Section: Discussionmentioning

confidence: 66%

“…This was also the case in our experiment (data not shown, but published in Bilsborrow et al (2013)). Greater above-ground biomass can also lead to greater below-ground biomass along with more rhizo-deposition, and soil microbial activities (Araujo et al, 2012;Balakrishna et al, 2017), all of which can further benefit SOC accumulation even at deeper soil layers. According to a recent meta-analysis conducted by Jian et al (2020), a greater mass and activity of root biomass, rhizo-deposits, and soil microbes could enhance the availability of essential nutrients to plant growth (e.g., N, phosphorus, and potassium), which can be a mechanism explaining the positive effect in SOC stocks at both soil depth intervals.…”

Section: Discussionmentioning

confidence: 99%

Diversified crop rotations and organic amendments as strategies for increasing soil carbon storage and stabilisation in UK arable systems

Zani

Manning

Abbott

et al. 2023

Front. Environ. Sci.

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Adaptations in crop rotation with the inclusion of temporary grass-clover leys and organic amendments, have been promoted as effective ways to improve soil carbon (C) sequestration and mitigate climate change in agricultural systems. However, there are still a lot of uncertainties related to i) the combined effects of different crop rotations and different fertilisation sources, e.g., organic amendments, on soil C stocks; and ii) their potential effect on C stabilisation. The objective of this study was to evaluate the effect of different arable crop rotations with varying degrees of diversity in crop type and lengths of grass-clover ley periods and fertilisation sources on soil C stocks and C stabilisation down to 0.60 m soil depth. This was investigated in a long-term factorial field experiment-combining different crop rotation (cereal-intensive conventional vs. diversified legume-intensive organic) with different lengths of grass-clover ley periods (2 vs. 3 years), fertilisation sources (mineral vs. compost), and years (samples taken at the beginning and at the last year of one complete cycle of rotation; 8 years apart)-to explore their individual and interactive effect on soil C stock and C stabilisation at two soil depths (0–0.30 and 0.30–0.60 m). Soil C stabilisation was assessed using a unique combination of three different techniques: physical fractionation for separation of C associated to organic and mineral fractions, thermal analysis combined with differential scanning calorimetry and a quadrupole mass spectrometry (TG-DSC-QMS) for physical-chemical aspects, and pyrolysis coupled with gas chromatography-mass spectrometry (Py-GC/MS) for molecular structural information. The findings showed higher soil C stocks under the diversified organic rotation with 3 years of grass-clover ley period at both soil depths, regardless of the fertilisation source or sampling year. However, the organic rotation seemed to deliver stable soil C stocks only in the subsoil layer. Compost fertilisation, in turn, increased topsoil C stocks between the two sample dates under both rotations, and it appears to be stable. These results suggested that combining a diversified organic rotation with 3 years grass-clover ley with compost fertilisation could be one way for agricultural systems to deliver stable soil C sequestration.

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Agroforestry for Soil Health

Singh,

Devi

et al. 2024

Agroforestry

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Influence of alley copping system on AM fungi, microbial biomass C and yield of finger millet, peanut and pigeon pea

Cited by 12 publications

References 17 publications

Agroforestry systems: Meta‐analysis of soil carbon stocks, sequestration processes, and future potentials

Agroforestry systems: Meta‐analysis of soil carbon stocks, sequestration processes, and future potentials

Diversified crop rotations and organic amendments as strategies for increasing soil carbon storage and stabilisation in UK arable systems

Agroforestry for Soil Health

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