Water interception and release of soluble carbon by mulches of plant residues under contrasting rain intensities

Thiébeau, Pascal; Girardin, Cyril; Recous, Sylvie

doi:10.1016/j.still.2020.104882

Cited by 5 publications

(2 citation statements)

References 29 publications

(48 reference statements)

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“…This effect depends on the mass and density of the mulch and its distribution at or near the soil surface. Mulches with N‐rich residues, contained in some green manures, may also leach soluble highly degradable N and C compounds that in the soil can be substrates for N 2 O production (Thiébeau et al, 2021). Therefore, in combination with reduced tillage or direct seeding, crop residues left as a mulch in conservation agriculture or in semiperennial cropping systems such as sugar cane (Sousa Junior et al, 2018) can not only increase soil C sequestration but also enhance N 2 O emissions, and in some cases overriding the C sequestration benefits on the long‐term net GHG balance (Lugato et al, 2018).…”

Section: Crop Residue Quality and Managementmentioning

confidence: 99%

Challenges of accounting nitrous oxide emissions from agricultural crop residues

Olesen,

Rees,

Recous

et al. 2023

Global Change Biology

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Crop residues are important inputs of carbon (C) and nitrogen (N) to soils and thus directly and indirectly affect nitrous oxide (N2O) emissions. As the current inventory methodology considers N inputs by crop residues as the sole determining factor for N2O emissions, it fails to consider other underlying factors and processes. There is compelling evidence that emissions vary greatly between residues with different biochemical and physical characteristics, with the concentrations of mineralizable N and decomposable C in the residue biomass both enhancing the soil N2O production potential. High concentrations of these components are associated with immature residues (e.g., cover crops, grass, legumes, and vegetables) as opposed to mature residues (e.g., straw). A more accurate estimation of the short‐term (months) effects of the crop residues on N2O could involve distinguishing mature and immature crop residues with distinctly different emission factors. The medium‐term (years) and long‐term (decades) effects relate to the effects of residue management on soil N fertility and soil physical and chemical properties, considering that these are affected by local climatic and soil conditions as well as land use and management. More targeted mitigation efforts for N2O emissions, after addition of crop residues to the soil, are urgently needed and require an improved methodology for emission accounting. This work needs to be underpinned by research to (1) develop and validate N2O emission factors for mature and immature crop residues, (2) assess emissions from belowground residues of terminated crops, (3) improve activity data on management of different residue types, in particular immature residues, and (4) evaluate long‐term effects of residue addition on N2O emissions.

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Section: Crop Residue Quality and Managementmentioning

confidence: 99%

Challenges of accounting nitrous oxide emissions from agricultural crop residues

Olesen,

Rees,

Recous

et al. 2023

Global Change Biology

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“…There have been numerous studies on the incorporation of natural polymers into PVA, such as hydrolyzed protein/PVA [7], soy protein isolate/PVA [14], myofibrillar protein/PVA, and others produced by the solution-casting method. Protein/PVA films have been investigated for applications in food packaging, protective films, edible films, and agricultural mulching films [38][39][40]. It has been demonstrated that a mixture of protein polypeptide and PVA forms mulch with excellent water retention and biodegradable properties [7].…”

Section: Introductionmentioning

confidence: 99%

Study on Nutrient Carrier of Mulch Based on Hydrogel @SiO2

Qin,

Ma,

Wang

et al. 2024

Polymers

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Soil conservation is one of the best methods to improve soil fertility and enhance crop growth efficiency. Replacing plastic mulch with biomass is an environmentally friendly strategy. Innovative encapsulated soil granules (ESGs) were developed using PVA/PC film as the wall material and rural soil as the core. The PVA/PC was synthesized using 60% protein polypeptide (PC) from leather waste scrap and 35% poly (vinyl alcohol) (PVA), which was optimized for water absorption expansion and water retention performance. The ESG-10 granulated with 10% PVA/PC exhibited good water absorption, moisture retention, and resistance to water solubility. As an auxiliary material for soil improvement, the amount of ESGs mixed with the topsoil at ratios of 0 g/m2, 200 g/m2, and 400 g/m2 was proportional to the soil insulation and moisture retention. In rapeseed cultivation, the experimental results indicated that the soil mulched with ESG-10 can maintain seedling vitality for a long time under low water content conditions.

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Nitrogen supply by cut-and-carry biomass for vegetable crops and subsequent cereals

Katroschan,

Hirthe

2024

Nutr Cycl Agroecosyst

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Water interception and release of soluble carbon by mulches of plant residues under contrasting rain intensities

Cited by 5 publications

References 29 publications

Challenges of accounting nitrous oxide emissions from agricultural crop residues

Challenges of accounting nitrous oxide emissions from agricultural crop residues

Study on Nutrient Carrier of Mulch Based on Hydrogel @SiO2

Nitrogen supply by cut-and-carry biomass for vegetable crops and subsequent cereals

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