Effects of Integrated Soil Fertility Management on Soil Properties and Phosphorus Sorption Characteristics at Three Soil Types in Southern Ethiopia

IF 2.6 3区农林科学 Q1 AGRONOMY

Journal of Plant Nutrition and Soil Science Pub Date : 2025-04-15 DOI:10.1002/jpln.12005

Rameto Wabela, Girma Abera, Bekele Lemma, Amsalu Gobena

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引用次数: 0

Abstract

Background

Low phosphorus availability in Ethiopian soil, mostly due to P sorption, is limiting agricultural crop productivity. Thus, effective phosphorus management is critical to addressing soil nutrient shortages.

Aim

This study evaluated the effect of integrated soil fertility management (ISFM) on soil properties and phosphorus sorption characteristics at three soil types in Southern Ethiopia.

Methods

Phosphorus sorption was determined by batch equilibrium methods, using the Langmuir and Freundlich models. Treatments included control, phosphorus fertilizer, biochar, compost, biochar with phosphorus fertilizer, and compost with phosphorus fertilizer.

Results

Results showed that the combined fertilizer application improved soil properties over the phosphorus fertilizer application. The application of biochar with phosphorus fertilizer to soil produced more available phosphorus in the acidic Luvisols, whereas the highest available phosphorus was obtained from the application of compost with phosphorus fertilizer in the Cambisols and Fluvisols, respectively. The phosphorus sorption data best fitted the Freundlich (R² = 0.82–0.98) models with all soil types. The application of ISFM decreased the Freundlich parameter values in all the studied soils compared to the addition of inorganic P. Luvisols require more phosphorus fertilizer to maintain optimal soil phosphorus concentration for crop growth compared to Cambisols and Fluvisols.

Conclusion

The ISFM showed potential to improve soil available phosphorus in the smallholder farming system of Southern Ethiopia. This could be attributed to the release of phosphorus through the mineralization of organic matter and phosphorus desorption from Fe and Al oxides in acidic, and Ca in alkaline soils.

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埃塞俄比亚南部土壤肥力综合管理对三种土壤类型土壤性质和磷吸收特性的影响

埃塞俄比亚土壤磷有效性低，主要是由于磷的吸收，限制了农作物的生产力。因此，有效的磷管理是解决土壤养分短缺的关键。目的评价土壤肥力综合管理（ISFM）对埃塞俄比亚南部3种土壤类型土壤性质和磷吸收特性的影响。方法采用Langmuir和Freundlich模型，采用间歇平衡法测定磷的吸附量。处理包括对照、磷肥、生物炭、堆肥、生物炭加磷肥、堆肥加磷肥。结果表明，与磷肥相比，复合肥改善了土壤性质。在土壤中施用生物炭和磷肥可以产生更多的酸性土壤中有效磷，而在cambisol和fluvisol中施用堆肥和磷肥分别获得最高的有效磷。磷吸附数据与所有土壤类型的Freundlich模型拟合最佳（R2 = 0.82-0.98）。与无机磷相比，ISFM的施用降低了所有土壤的Freundlich参数值，与cambisol和fluvisol相比，luvisol需要更多的磷肥来维持作物生长所需的最佳土壤磷浓度。结论ISFM在埃塞俄比亚南部小农农业系统中具有改善土壤有效磷的潜力。这可能是由于酸性土壤中的Fe和Al氧化物和碱性土壤中的Ca氧化物通过有机质矿化和磷解吸释放出磷。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Plant Nutrition and Soil Science 农林科学-农艺学

CiteScore

4.70

自引率

8.00%

发文量

审稿时长

8-16 weeks

期刊介绍： Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years. Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH. Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are: JPNSS – Topical Divisions Special timely focus in interdisciplinarity: - sustainability & critical zone science. Soil-Plant Interactions: - rhizosphere science & soil ecology - pollutant cycling & plant-soil protection - land use & climate change. Soil Science: - soil chemistry & soil physics - soil biology & biogeochemistry - soil genesis & mineralogy. Plant Nutrition: - plant nutritional physiology - nutrient dynamics & soil fertility - ecophysiological aspects of plant nutrition.