Water–Fertilizer Synergistic Effects and Resource Optimization for Alfalfa Production: A Central Composite Design and Response Surface Methodology Approach DOI Creative Commons

G. H. Mu,

Yuanbo Jiang,

Haiyan Li

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(5), P. 731 - 731

Published: Feb. 27, 2025

This study posits that strategically optimizing irrigation and fertilization regimes can enhance the productivity water use efficiency (WUE) of alfalfa (Medicago sativa L.), thereby mitigating constraints imposed by soil impoverishment scarcity in forage production systems arid semi-arid regions. Conducted over two years, outdoor pot experiment investigated effects regulation during branching bud stages (each at 60–100% θ0.85, where θ0.85 = 0.85θfc) different levels nitrogen phosphorus (0–280 kg/ha each) on yield WUE. Using Response Surface Methodology (RSM) with a Central Composite Design (CCD), we modeled relationships between input variables key response parameters: total yield, evapotranspiration (ET), The surface models exhibited high reliability, coefficients determination R2, adjusted predicted adequate precision exceeding 0.94, 0.90, 0.86, 13.6, respectively. Sensitivity analysis indicated critical growth stages, particularly stage, had most significant impact ET, while positively influenced Within appropriate range management, judicious significantly enhanced performance, although excessive inputs resulted diminishing returns. identified optimal conditions for sustainable production: stage (82.26–83.12% θ0.85) (78.11–88.47% θ0.85), along application (110.59–128.88 kg/ha) (203.86–210 kg/ha). These findings provide practical guidelines improving sustainability resource-limited environments.

Language: Английский

Water–Fertilizer Synergistic Effects and Resource Optimization for Alfalfa Production: A Central Composite Design and Response Surface Methodology Approach DOI Creative Commons

G. H. Mu,

Yuanbo Jiang,

Haiyan Li

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(5), P. 731 - 731

Published: Feb. 27, 2025

This study posits that strategically optimizing irrigation and fertilization regimes can enhance the productivity water use efficiency (WUE) of alfalfa (Medicago sativa L.), thereby mitigating constraints imposed by soil impoverishment scarcity in forage production systems arid semi-arid regions. Conducted over two years, outdoor pot experiment investigated effects regulation during branching bud stages (each at 60–100% θ0.85, where θ0.85 = 0.85θfc) different levels nitrogen phosphorus (0–280 kg/ha each) on yield WUE. Using Response Surface Methodology (RSM) with a Central Composite Design (CCD), we modeled relationships between input variables key response parameters: total yield, evapotranspiration (ET), The surface models exhibited high reliability, coefficients determination R2, adjusted predicted adequate precision exceeding 0.94, 0.90, 0.86, 13.6, respectively. Sensitivity analysis indicated critical growth stages, particularly stage, had most significant impact ET, while positively influenced Within appropriate range management, judicious significantly enhanced performance, although excessive inputs resulted diminishing returns. identified optimal conditions for sustainable production: stage (82.26–83.12% θ0.85) (78.11–88.47% θ0.85), along application (110.59–128.88 kg/ha) (203.86–210 kg/ha). These findings provide practical guidelines improving sustainability resource-limited environments.

Language: Английский

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