Grass Buffer Strips Improve Soil Health and Mitigate Greenhouse Gas Emissions in Center-Pivot Irrigated Cropping Systems

Declining water resources and soil degradation have significantly affected agricultural sustainability across the world. In the southern High Plains of USA, buffer strips of perennial grasses alternating with cultivated corn strips were introduced in center-pivot irrigated crop fields to increase ag...

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Veröffentlicht in:Sustainability 2020-08, Vol.12 (15), p.6014
Hauptverfasser: Salehin, Sk. Musfiq-Us, Ghimire, Rajan, Angadi, Sangamesh V., Idowu, Omololu J.
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container_issue 15
container_start_page 6014
container_title Sustainability
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creator Salehin, Sk. Musfiq-Us
Ghimire, Rajan
Angadi, Sangamesh V.
Idowu, Omololu J.
description Declining water resources and soil degradation have significantly affected agricultural sustainability across the world. In the southern High Plains of USA, buffer strips of perennial grasses alternating with cultivated corn strips were introduced in center-pivot irrigated crop fields to increase agronomic production and ecosystem services. A study was conducted to evaluate soil carbon (C) and nitrogen (N) dynamics, greenhouse gas (GHG) emissions, and soil health benefits of integrating circular grass buffer strips in the center-pivot irrigated corn production system. Multiple parameters were assessed in the grass buffer strips, and at distances of 1.52, 4.57, and 9.14 m away from the edges of grass strips in corn strips. While grasses in the buffer strips depleted N compared to corn strips, potential C mineralization (PCM) was 52.5% to 99.9% more in grass strips than in corn strips. Soil microbial biomass C (MBC) content was 36.7% to 52.5% greater in grass strips than in corn strips. Grass buffer also reduced carbon dioxide (CO2) and nitrous oxide (N2O) emissions from corn strips. Grass buffer strips can improve soil health and sustainability in center-pivot irrigated cropping systems by increasing soil C components and reducing GHG emissions.
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subjects Agricultural production
Agronomic crops
Agronomy
Aquifers
Biodegradation
Biomass
Carbon dioxide
Corn
Crop fields
Cropping systems
Crops
Cultivation
Ecosystem services
Efficiency
Emissions
Emissions control
Environmental degradation
Grain cultivation
Grasses
Grasslands
Greenhouse effect
Greenhouse gases
High plains
Irrigation
Irrigation systems
Laboratories
Microorganisms
Mineralization
Nitrogen
Nitrous oxide
Nonpoint source pollution
Seasons
Soil degradation
Soil dynamics
Soil erosion
Soil improvement
Soil water
Studies
Sustainability
Sustainable agriculture
Water resources
title Grass Buffer Strips Improve Soil Health and Mitigate Greenhouse Gas Emissions in Center-Pivot Irrigated Cropping Systems
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