Soil Organic Matter as Catalyst of Crop Resource Capture

King, Aaron A.; Ali, Genevieve; Gillespie, Adam; Wagner‐Riddle, Claudia

doi:10.3389/fenvs.2020.00050

Cited by 59 publications

(37 citation statements)

References 118 publications

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“…This finding supports the general notion that, together with litter inputs, SOM is an essential resource base for not only decomposer organisms, but entire soil food webs [76,77], and is thus a key driver of multiple soil biological processes. We also note that the observed positive correlations between SOM and available K and P, as well as CEC, point to the importance of SOM in both water and nutrient cycling that has been reported elsewhere [78,79].…”

Section: Linkages Between Litter Quality Som and Soil Quality Parameterssupporting

confidence: 78%

Linkages among Soil Properties and Litter Quality in Agroforestry Systems of Southeastern Brazil

et al. 2020

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Agroforestry systems have been promoted as a solution to address trade-offs between environmental conservation efforts and the need for increased agricultural productivity on smallholder farms in Brazil. However, the impact of land use change from degraded pasture to agroforestry on soil properties remains unclear. The objectives of this research were to: (1) assess soil chemical, physical and biological properties across distinct land uses (degraded pasture, agroforestry and secondary forest); and (2) understand relationships between litter quality, soil organic matter (SOM) and key soil quality parameters in the Brazilian Atlantic Rainforest. Soils, macroinvertebrates and litter were collected in April and September of 2018 under five land uses, including: three types of agroforestry systems, a degraded pasture and a secondary forest in Sapucaia, Rio de Janeiro, Brazil. Our results showed that soil properties clearly separated the three agroforestry systems plots (AS1, AS2, AS3) from the forest and pasture plots. Moreover, litter quality and SOM likely influence multiple biological and physiochemical soil properties under agroforestry systems and secondary forest. Our findings suggest that agroforestry systems can help support soil biological, chemical and physical properties and that the litter quality may be an important driver of their effects and potential contributions to soil restoration in the region.

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Section: Linkages Between Litter Quality Som and Soil Quality Parameterssupporting

confidence: 78%

Linkages among Soil Properties and Litter Quality in Agroforestry Systems of Southeastern Brazil

et al. 2020

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“…The application of organic matter into the soil can provide nitrogen and water for plants [19]. However, the combination between organic matter and nitrogen fertilizer would boost better plant productivity.…”

Section: Resultsmentioning

confidence: 99%

Application of Goat Manure Briquettes on Red Chili Cultivation in Coastal Sandy Soil

Budiyanto

Mulyono

Achmad

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Application of organic matter could prevent a high infiltration problem commonly found in coastal sandy soil. Due to its slow-release properties, organic matter added to this sandy soil may improve the groundwater retention capacity. This study was aimed to investigate the capacity of goat manure briquettes (GMB) in comparison with goat manure to support the productivity of red chili cultivated in coastal sandy soil. The study was carried out in a completely randomized design consisting of 3 doses of goat manure briquettes (GMB) and goat manure (GM) applied (30, 35, 40 tons/ha) with 12 replications. Each dose was applied to the fertilized soils (400 kg/ha urea + 300 kg/ha SP-36 + 300 kg/ha KCl) then incubated for a week. These treated soils were then used for red chili cultivation. Plant growth and yield were monitored and data collected were statistically analysed using DNMRT with significance level of 5%. GMB application showed insignificant effect towards the chili performance in sandy soil. In contrast, GM application revealed higher plant performance and yield. Application of 40 tons/ha GM exhibited the highest fruit weight compared to other treatments. According to these results, the formulation of GM into briquette might reduce its capacity in supporting plant growth.

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“…SOC decrease strongly impacts soil quality (Lal, 2006), in particular its physical resistance and resilience (Kay, 1998). Owing to the multiple benefits of SOC to soil quality, in particular soil fertility in a broad understanding (King et al, 2020), increasing SOC content is an environmental and agronomical emergency regardless of climate questions. The requirements in SOC content with respect to soil physical quality were recently defined by Johannes et al (2017), who showed that soil structure vulnerability is proportional to the SOC to clay ratio.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Potential for Soil Organic Carbon Content Monitoring With Farmers

Deluz

Nussbaum

Sauzet

et al. 2020

Front. Environ. Sci.

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Increasing soil organic carbon (SOC) content is crucial for soil quality and climate change mitigation. SOC monitoring is indispensable to the corresponding policies and should provide results at farm scale to allow for incentives. In Switzerland, farmers perform mandatory analyses of the SOC content of the 0-20 cm topsoil of every field, based on a composite sample, at least every 10 years. The corresponding results are stored in a database in canton of Geneva. These data may be relevant for topsoil SOC monitoring, in particular for carbon sequestration policies, provided that they show appropriate quality, which is analyzed in this study. The minimum detectable change (MDC) of past results calculated based on the observed SOC changes was 0.013% g g −1 at canton scale (2,700 fields). Based on extended sampling of three representative fields, different sampling strategies were simulated to determine the best future sampling guidelines for farmers. Collecting 20 aliquots with a gouge on the field diagonals was considered the best sampling compromise with field MDC of ∼0.1% g g −1 and a sampling duration of 20 min. Compared to this procedure, former farmers' sampling was not biased in average but showed a variance of 0.22% g g −1 due to smaller number of aliquots and varying sampling depths. Based on the best sampling results and assumptions on farm-scale SOC variance or SOC differences, the MDCs at farm scale ranged from 0.21 to 0.12% g g −1 (5 fields) and 0.09 to 0.05% g g −1 (30 fields), respectively. These MDCs are small compared to published monitoring networks MDCs and allow determining SOC change rates at farm scale, thus offering perspectives for inexpensive and efficient monitoring in the frame of soil quality or climate mitigation incentives. For the latter, however, additional information with equivalent soil mass and deeper-layer carbon content would be necessary.

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Soil Organic Matter as Catalyst of Crop Resource Capture

Cited by 59 publications

References 118 publications

Linkages among Soil Properties and Litter Quality in Agroforestry Systems of Southeastern Brazil

Linkages among Soil Properties and Litter Quality in Agroforestry Systems of Southeastern Brazil

Application of Goat Manure Briquettes on Red Chili Cultivation in Coastal Sandy Soil

Evaluation of the Potential for Soil Organic Carbon Content Monitoring With Farmers

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