Soil CO<sub>2</sub> efflux dynamics in an integrated crop‐livestock system
نویسندگان
چکیده
Integrated crop-livestock (ICL) systems have shown potential to provide a variety of environmental benefits including soil carbon (C) increases relative conventional row cropping systems. However, studies documenting C dynamics ICL in the northern Great Plains are lacking other agroecosystems. Soil CO2 efflux, crop biomass, and organic matter (SOM) pools were monitored over three years an rotation [corn (Zea mays L.)/soybean (Glycine max L.) – spring wheat (Triticum aestivum + cover crop] with fall grazing, system (corn-spring wheat-soybean) grazed ungrazed mixed-grass pasture near Mandan, ND USA. Cropped treatments under no-till management. Annual aboveground residue biomass was similar systems, while less (4.18, 3.83, 1.21 Mg ha−1 yr−1 respectively; P = 0.039). efflux greater ICL, grazed, than (8.05, 8.73, 8.25 5.81 yr−1, <0.001). Among phases crops contributed fall. mineralization at 0–5 cm compared (6.6 vs. 6.3%, 0.028 248 184 mg CO2-C kg−1, <0.001, respectively). Interseeded can contribute increased root respiration enhanced SOM semiarid conditions. This article is protected by copyright. All rights reserved
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ژورنال
عنوان ژورنال: Soil Science Society of America Journal
سال: 2023
ISSN: ['0361-5995', '1435-0661']
DOI: https://doi.org/10.1002/saj2.20546