EPIC model prediction of winter rye cover crop effects on crop yield and nitrate‐N leaching in Minnesota DOI Creative Commons
Muhammad Tahir, Fabián G. Fernández,

Natalie Ricks

et al.

Agronomy Journal, Journal Year: 2025, Volume and Issue: 117(3)

Published: April 25, 2025

Abstract Coarse‐textured soils in central Minnesota cultivated with corn ( Zea mays L.) and soybean Glycine max exhibit good productivity, however, are vulnerable to nitrate‐N leaching losses. In such circumstances, winter rye Secale cereale as a cover crop may reduce by scavenging soil nitrogen (N) late‐fall early‐spring fallow period. The Environmental Policy Integrated Climate (EPIC) model was used for decadal‐scale (2010–2020) simulation of yield/biomass corn– (C–C) corn–soybean/soybean–corn (C–Sb/Sb–C) rotations, without rye, under different fertilizer N rates applied (0, 100, 200, 250, 300 kg ha −1 ) on irrigated coarse‐textured Minnesota. Model efficiency calculated based Nash–Sutcliffe coefficient, relative root mean square error, R 2 statistics indicate that EPIC assessment calibration validation treatments excellent‐good corn/soybean yield, good‐satisfactory biomass NO 3 ‐N Results up 250 had positive impact biomass; large crop‐rotation climate‐induced variations were observed. Annual losses at maximum return 0.05 price value ratio C–C (250 C–Sb/Sb–C (200 no‐rye averaged 61.5, 47.4, 41.8 , while grain yield 12.5, 12.3, 4.0 t (C–C), (C–Sb/Sb–C), respectively. Planting these rotations gave annual average reductions corresponding 2.9 (4.7%), 3.4 (7.3%), 6.5 (15.6%), uptake 10.3, 12.1, 33.5 ; production 0.61, 0.74, 2.0 indicates did not negatively the subsequent proved be an effective strategy reducing losses, particularly following crop.

Language: Английский

EPIC model prediction of winter rye cover crop effects on crop yield and nitrate‐N leaching in Minnesota DOI Creative Commons
Muhammad Tahir, Fabián G. Fernández,

Natalie Ricks

et al.

Agronomy Journal, Journal Year: 2025, Volume and Issue: 117(3)

Published: April 25, 2025

Abstract Coarse‐textured soils in central Minnesota cultivated with corn ( Zea mays L.) and soybean Glycine max exhibit good productivity, however, are vulnerable to nitrate‐N leaching losses. In such circumstances, winter rye Secale cereale as a cover crop may reduce by scavenging soil nitrogen (N) late‐fall early‐spring fallow period. The Environmental Policy Integrated Climate (EPIC) model was used for decadal‐scale (2010–2020) simulation of yield/biomass corn– (C–C) corn–soybean/soybean–corn (C–Sb/Sb–C) rotations, without rye, under different fertilizer N rates applied (0, 100, 200, 250, 300 kg ha −1 ) on irrigated coarse‐textured Minnesota. Model efficiency calculated based Nash–Sutcliffe coefficient, relative root mean square error, R 2 statistics indicate that EPIC assessment calibration validation treatments excellent‐good corn/soybean yield, good‐satisfactory biomass NO 3 ‐N Results up 250 had positive impact biomass; large crop‐rotation climate‐induced variations were observed. Annual losses at maximum return 0.05 price value ratio C–C (250 C–Sb/Sb–C (200 no‐rye averaged 61.5, 47.4, 41.8 , while grain yield 12.5, 12.3, 4.0 t (C–C), (C–Sb/Sb–C), respectively. Planting these rotations gave annual average reductions corresponding 2.9 (4.7%), 3.4 (7.3%), 6.5 (15.6%), uptake 10.3, 12.1, 33.5 ; production 0.61, 0.74, 2.0 indicates did not negatively the subsequent proved be an effective strategy reducing losses, particularly following crop.

Language: Английский

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