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Journals / Turkish Journal of Range and Forage Science / 2025 / Volume: 6 Issue: 2

Determining Economically Optimal Fertiliser Doses in Eastern Anatolian Natural Rangelands: A Fertilisation Study Data Revisited

Abdurrahman Kara(DİCLE ÜNİVERSİTESİ)0000-0001-7207-2589
Pages
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Publication Date
2025-12-25
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results indicated that nitrogen had a limited standalone impact but showed synergistic benefits when combined with phosphorus in moderate-to-good condition rangelands.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study aimed to identify economically optimal nitrogen and phosphorus rates along with examining their synergistic effects and climate variables in Eastern Anatolia’s natural rangelands.
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Key Findings & Data:Results indicated that nitrogen had a limited standalone impact but showed synergistic benefits when combined with phosphorus in moderate-to-good condition rangelands.
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Conclusion & Impact:Achieving resilient agricultural landscapes and sustainable outcomes requires adaptive fertilisation practices and continuous monitoring.
🔬Design:Lab & Field Experiment
📍Scope:Comprehensive Sample
⚙️Variables:Economic analysis · Nitrogen and phosphorus · partial budget

Abstract

This study aimed to identify economically optimal nitrogen and phosphorus rates along with examining their synergistic effects and climate variables in Eastern Anatolia’s natural rangelands. Using data from a prior fertilisation trial, pooled regression models, descriptive statistics, and partial budget analysis were employed. Results indicated that nitrogen had a limited standalone impact but showed synergistic benefits when combined with phosphorus in moderate-to-good condition rangelands. While moderate-condition rangeland exhibited notable improvements, these were not statistically significant compared to poor-condition rangeland. Good-condition rangelands responded weakly to fertilisation, suggesting inherent productivity limits marginal gains. Economic analysis confirmed diminishing returns at higher input levels, supporting lower fertiliser rates in moderate rangeland. Optimal doses were determined as 90 kg·ha⁻¹ nitrogen and 40 kg·ha⁻¹ phosphorus for poor-condition rangelands, and 30 kg·ha⁻¹ nitrogen with 40 kg·ha⁻¹ phosphorus for moderate and good rangeland sites. Results also revealed that seasonal humidity, although only marginally significant, had a more pronounced effect than temperature or precipitation, highlighting its potential role as a moderating climatic variable in fertilisation outcomes. The study concludes that rangeland fertilisation strategies should be site-specific, balancing ecological context with economic feasibility. Prioritising poor-condition degraded rangelands may offer long-term restoration benefits, not necessarily for immediate economic returns, but for their potential in enhancing productivity recovery and ecological restoration towards historical benchmarks. Achieving resilient agricultural landscapes and sustainable outcomes requires adaptive fertilisation practices and continuous monitoring.

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Cite This Article

Kara, A. (2025). Determining Economically Optimal Fertiliser Doses in Eastern Anatolian Natural Rangelands: A Fertilisation Study Data Revisited. Turkish Journal of Range and Forage Science, Volume: 6 Issue: 2. https://doi.org/10.51801/turkjrfs.1765045

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