Impacts of Cover Crops and Crop Residues on Phosphorus Losses in Cold Climates: A Review

Journal of Environmental Quality, Journal Year: 2019, Volume and Issue: 48(4), P. 850 - 868

Published: June 27, 2019

The use of cover crops and crop residues is a common strategy to mitigate sediment nutrient losses from land water. In cold climates, elevated dissolved P can occur associated with freeze-thaw plant materials. Here, we review the impacts on total loss in climates across ∼41 studies, exploring linkages between water-extractable (WEP) materials surface runoff subsurface drainage. Water-extractable concentrations are influenced by type freezing regimes. For example, WEP was greater brassica than non-brassicas, increased repeated cycles. However, drainage cropped fields under were much lower WEP, owing retention 45 >99% released soil. climatic regions, generally prevented soil erosion particle-bound during nongrowing seasons erodible landscapes but tended elevate nonerodible soils. Their impact inconsistent studies complicated soil, climate, management factors. More research needed understand interactions these factors that influence loss, improve assessment contributions field settings climates. Further, tradeoffs control N leaching plants should be acknowledged.

Language: Английский

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Crops for Carbon Farming

Frontiers in Plant Science, Journal Year: 2021, Volume and Issue: 12

Published: June 4, 2021

Agricultural cropping systems and pasture comprise one third of the world's arable land have potential to draw down a considerable amount atmospheric CO2 for storage as soil organic carbon (SOC) improving budget. An improved budget serves dual purpose promoting health, which supports crop productivity, constituting pool from can be converted recalcitrant forms long-term mitigation measure global warming. In this perspective, we propose design ideotypes with functionality being highly productive purposes food, feed, fuel, while at same time able facilitate higher contribution improve below ground ecology. We advocate holistic approach integrated plant-microbe-soil system suggest that significant improvements in achieved by three-pronged approach: (1) plants an increased root strength further allocation belowground; (2) balance increase belowground source enhanced photosynthesis biomass accumulation; (3) microbial consortia rhizosphere sink plant growth-promoting (PGP) properties.

Language: Английский

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Anthropogenic drivers of soil microbial communities and impacts on soil biological functions in agroecosystems

Global Ecology and Conservation, Journal Year: 2021, Volume and Issue: 27, P. e01521 - e01521

Published: March 7, 2021

Anthropogenic interventions play a key role in promoting positive feedback of soil–plant–environment interactions, but systematic reports on how anthropogenic activities influence soil physiochemical, microorganism-induced properties and health are still limited. Here, we assessed the impact interventions, including crop diversification rotations, physical disturbance, synthetic chemical inputs, biofertilizer use microbial community structure function, consequential effects agroecosystem productivity environmental sustainability. Summarizing results over 160 medium- to long‐term experiments from various soil-climatic zones across globe this review illustrated that (1) increasing rotations could bring impacts microorganisms health, especially legume crops rotations. (2) However, monocultures such as continuous wheat cropping negatively by enhancing host specific pathogens. (3) Physical agronomic practices tillage can alter communities shifting microclimate conditions. (4) Mineral nitrogen fertilizer use, leading nutrient input, may have exceeded planetary boundary N cycling, is causing acidification decreasing biomass. (5) Synthetic chemicals, essential for disease management (pesticides) yield sustainability (fertilization) conventional agroecosystems often toxic non-target microorganisms, while bio-fungicides biofertilizers—a more sustainable approach—carry significant risks trigger succession native community, thus impacting health. The establish rational balance between potential negative influences long-term

Language: Английский

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The impact of climate smart agriculture on household welfare in smallholder integrated crop–livestock farming systems: evidence from Zimbabwe

Agriculture & Food Security, Journal Year: 2021, Volume and Issue: 10(1)

Published: March 9, 2021

Abstract Background Agriculture contributes significantly to the welfare of smallholder farmers, but it has become highly susceptible climate change, due its reliance on increasingly erratic rainfall patterns. Climate Smart (CSA) offers important opportunities for enhancing food security and incomes through increased agriculture productivity. Technology evaluation impact studies provides information effect CSA farmer welfare, thereby highlighting potential in optimizing This paper analyses adoption income households, using cross-sectional survey data collected from 386 households across four districts Zimbabwe. The analysis was done endogenous switching regression model which controls selection bias unobserved heterogeneity, a commonly used method analysis. Results study found several agricultural socio-economic factors affect security. econometric results show that status soil fertility fields, distance input output markets, ownership communication assets, Total Livestock Units (TLU) have significant decision farmers adopt CSA. Average Treatment Effects Treated (ATT) Untreated (ATU) were be positive adopters non-adopters, indicating had farmers. An outcomes revealed characteristics farms, as well market factors, households. household income, with reference CSA, affected by such education head, labour size, TLU, asset index. Food influenced access sanitation, arable land size. Conclusions concludes giving policy recommendations centred inputs, encouraging investing assets TLU. findings indicate To exploit full these technologies, suggests timely weather forecasts must ensured, sanitation promoted, incentives provided agro-dealers decentralize rural areas.

Language: Английский

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Long-term green manuring to substitute partial chemical fertilizer simultaneously improving crop productivity and soil quality in a double-rice cropping system

European Journal of Agronomy, Journal Year: 2022, Volume and Issue: 142, P. 126641 - 126641

Published: Sept. 23, 2022

Language: Английский

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Cover crop legacy impacts on soil water and nitrogen dynamics, and on subsequent crop yields in drylands: a meta-analysis

Agronomy for Sustainable Development, Journal Year: 2022, Volume and Issue: 42(3)

Published: April 20, 2022

Abstract Cover crops can provide a wide range of ecosystem services including soil water conservation, improved nutrient supply and retention, enhanced crop yields. However, achieving these in dryland cropping systems be highly challenging, cover may carry greater risk causing disservices. Assessment the balance vs disservices is critical for understanding potential role within systems. The objective this meta-analysis was to assess effects drylands on mineral nitrogen content at sowing subsequent cash their yields compared control fallows. A total 38 articles were examined, 1006 yield, 539 water, 516 independent studies, spanning period 1994–2021. On average, reduced yield by 7%, 18%, 25%, with significant variation across climates, types, management conditions. Subsequent changed +15, +4, −12, −11% following tropical, continental, dry, temperate respectively. most benefits proportionate time sowing. This first demonstrate that minimum annual precipitation ~700 mm represents “break-even” point realize fallows environments. successful incorporation into requires careful planning based context-specific biophysical conditions minimize trade-offs between

Language: Английский

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Diversity of Phosphate Chemical Forms in Soils and Their Contributions on Soil Microbial Community Structure Changes

Microorganisms, Journal Year: 2022, Volume and Issue: 10(3), P. 609 - 609

Published: March 13, 2022

In many soils, the bioavailability of Phosphorus (P), an essential macronutrient is a limiting factor for crop production. Among mechanisms developed to facilitate absorption phosphorus, plant, as holobiont, can rely on its rhizospheric microbial partners. Therefore, P-solubilizing inoculants are proposed improve soil P fertility in agriculture. However, better understanding interactions soil-plant-microorganism continuum with phosphorus cycle needed propose efficient inoculants. Before proposing further methods research, we carried out critical review literature two parts. First, focused diversity P-chemical forms. After forms describe multiple factors that shape these and their turnover. Second, provide analysis driver community soil. Even if no rule enabling explain changes composition communities according has been shown, this element perfectly targeted linked presence/absence and/or abundance particular bacterial taxa. conclusion, point need link chemistry microbiology order understand variations function bioavailability. This knowledge will make it possible advanced microbial-based inoculant engineering improvement bioavailable plants sustainable

Language: Английский

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Diversified crop rotations increase the yield and economic efficiency of grain production systems

European Journal of Agronomy, Journal Year: 2022, Volume and Issue: 137, P. 126528 - 126528

Published: May 4, 2022

Language: Английский

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Effect of various phosphorus levels on the extraction of Cd, the transformation of P, and phosphorus-related gene during the phytoremediation of Cd contaminated soil

Environmental Research, Journal Year: 2024, Volume and Issue: 251, P. 118389 - 118389

Published: March 7, 2024

Language: Английский

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A critical review of soil phosphorus dynamics and biogeochemical processes for unlocking soil phosphorus reserves

Advances in agronomy, Journal Year: 2024, Volume and Issue: unknown, P. 153 - 249

Published: Jan. 1, 2024

Language: Английский

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