On-farm assessment of phosphorus fertilization influence on yield and soil P balance of full-season soybean in the Argentinean Pampas

IF 5.6 1区农林科学 Q1 AGRONOMY

Field Crops Research Pub Date : 2025-05-16 DOI:10.1016/j.fcr.2025.109986

Mariana Antonietta , José Micheloud , María Paolini , Gustavo Martini , Juan J. Guiamet , Emilio Satorre

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引用次数: 0

Abstract

Context

The Argentinean Pampas face high soil nutrient mining rates that threaten soil quality and future crop production. Phosphorus (P) depletion is closely associated to soybean, which has increased the interest on soybean P management.

Objective

To assess the influence of on-farm P fertilization on yield and soil P balance of full-season soybean.

Methods

We used a database gathered by the Argentinean Association of Regional Consortiums for Agricultural Experimentation that included four agro-ecological regions within the Argentinean Pampas (Centre, Sandy West, West and Southeast) and six seasons (2017–2023) with a total of 15753 cases. Cases were divided according to P fertilization in: low P (LP, 7972 cases) and high P fields (HP, 7781 cases), receiving less than or at least 7 kg P ha⁻¹, respectively. Differential distribution of yield data between LP and HP fields was analyzed considering environmental yield ranges, seasonal rainfall and soil P Bray1 values.

Results

Across regions, significantly higher yields (7–27 %) were obtained in HP fields compared to LP fields, with largest relative differences at low-yielding percentiles. Seasonal rainfall had a varying influence suggesting a role of the organic-P fraction during rainy years. Relative HP yields were larger than expected from soil P Bray1 values. Mean soil P balance was negative but improved with P fertilization.

Conclusion

Our results suggest widespread P limitations for soybean yields in the Pampas under a scenario of progressive P depletion with increasing pressure over the organic-P pool, highlighting the need for novel approaches towards closing nutrient cycles.

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阿根廷潘帕斯草原面临着高土壤养分开采率，这威胁到土壤质量和未来的作物生产。磷(P)耗竭与大豆密切相关，这增加了人们对大豆磷管理的兴趣。

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来源期刊

Field Crops Research 农林科学-农艺学

CiteScore

9.60

自引率

12.10%

发文量

307

审稿时长

46 days

期刊介绍： Field Crops Research is an international journal publishing scientific articles on: √ experimental and modelling research at field, farm and landscape levels on temperate and tropical crops and cropping systems, with a focus on crop ecology and physiology, agronomy, and plant genetics and breeding.