Effect of mechanochemically modified MoO3–ZnO on Mo supply to plants when co-granulated with macronutrient fertilizers

IF 5.2 2区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Chemical and Biological Technologies in Agriculture Pub Date : 2024-08-15 DOI:10.1186/s40538-024-00626-5

Bo Zheng, Fien Degryse, Ivan B. Andelkovic, Roslyn Baird, Mike John McLaughlin

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引用次数: 0

Abstract

Molybdenum (Mo) is an essential micronutrient required for plant growth but is prone to leaching from neutral and alkaline soils. The use of slow-release Mo sources could potentially reduce leaching losses from soils and increase crop yields. In this study, we assessed mechanochemistry as a green method to produce slow-release Mo sources. Molybdenum compounds (MoO3 or (NH4)6Mo7O24·4H2O) were mechanochemically (MC) treated with ZnO to synthesize compounds with a Mo content of 1–36%. Reduced Mo solubility after MC treatment, compared to the initial Mo source, was obtained with the MoO3 source and these composites were used for co-compaction with macronutrient fertilizers. Macronutrient pellets with 0.2% Mo were compacted using the 4% Mo and 36% Mo (characterized as ZnMoO4) compounds. A column dissolution test showed that the 4% Mo compound in a macronutrient carrier (DAP and MAP) only released around 40% of the total Mo compared to 80% for a non-MC treated control over 72 h. Column leaching using two soils revealed that the release behavior of Mo was strongly related to the pH of the leachate, which was affected by both the soil pH and the macronutrient carrier. More Mo was released when the MC-treated compound was co-compacted with diammonium phosphate (DAP) compared to monoammonium phosphate (MAP). The MC-treated compound with 4% Mo showed significantly less leaching than the control without ball milling when co-compacted with both MAP and DAP. In a pot trial with simulated leaching, the uptake of Mo was greater for the MC-treated 4% Mo compound co-compacted into DAP than for the other Mo sources. Overall, our results indicate that MC-treated MoO3–ZnO could be used as a slow-release Mo source in high-rainfall areas.

Graphical Abstract

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机械化学修饰的氧化亚锰（MoO3-ZnO）与大量元素肥料共同造粒时对植物钼供应的影响

钼（Mo）是植物生长所必需的微量元素，但容易从中性和碱性土壤中沥滤。使用缓释钼源有可能减少土壤中的沥滤损失，提高作物产量。在这项研究中，我们评估了机械化学作为生产缓释钼源的绿色方法。用氧化锌对钼化合物（MoO3 或 (NH4)6Mo7O24-4H2O) 进行机械化学处理（MC），合成钼含量为 1-36% 的化合物。与初始钼源相比，MoO3 源经 MC 处理后的钼溶解度降低，这些复合材料被用于与大量元素肥料共同压制。使用 4% Mo 和 36% Mo（表征为 ZnMoO4）化合物压制了含 0.2% Mo 的宏量营养颗粒。柱溶解测试表明，在 72 小时内，大营养素载体（DAP 和 MAP）中的 4% Mo 复合物仅释放出总钼的 40%，而未经 MC 处理的对照组则释放出 80%。使用两种土壤进行的柱浸出测试表明，钼的释放行为与浸出液的 pH 值密切相关，而 pH 值又受到土壤 pH 值和大营养素载体的影响。与磷酸一铵（MAP）相比，当 MC 处理过的化合物与磷酸二铵（DAP）共同压实时，钼的释放量更大。在与磷酸氢二铵（MAP）和磷酸氢二铵（DAP）共同压实时，钼含量为 4% 的 MC 处理化合物的沥滤明显少于未进行球磨的对照组。在模拟沥滤的盆栽试验中，与磷酸二铵（DAP）共同压实的 MC 处理过的 4% Mo 复合物的钼吸收率高于其他钼源。总之，我们的研究结果表明，经 MC 处理的 MoO3-ZnO 可用作高降雨量地区的缓释钼源。

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来源期刊

Chemical and Biological Technologies in Agriculture Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

6.80

自引率

3.00%

发文量

审稿时长

15 weeks

期刊介绍： Chemical and Biological Technologies in Agriculture is an international, interdisciplinary, peer-reviewed forum for the advancement and application to all fields of agriculture of modern chemical, biochemical and molecular technologies. The scope of this journal includes chemical and biochemical processes aimed to increase sustainable agricultural and food production, the evaluation of quality and origin of raw primary products and their transformation into foods and chemicals, as well as environmental monitoring and remediation. Of special interest are the effects of chemical and biochemical technologies, also at the nano and supramolecular scale, on the relationships between soil, plants, microorganisms and their environment, with the help of modern bioinformatics. Another special focus is the use of modern bioorganic and biological chemistry to develop new technologies for plant nutrition and bio-stimulation, advancement of biorefineries from biomasses, safe and traceable food products, carbon storage in soil and plants and restoration of contaminated soils to agriculture. This journal presents the first opportunity to bring together researchers from a wide number of disciplines within the agricultural chemical and biological sciences, from both industry and academia. The principle aim of Chemical and Biological Technologies in Agriculture is to allow the exchange of the most advanced chemical and biochemical knowledge to develop technologies which address one of the most pressing challenges of our times - sustaining a growing world population. Chemical and Biological Technologies in Agriculture publishes original research articles, short letters and invited reviews. Articles from scientists in industry, academia as well as private research institutes, non-governmental and environmental organizations are encouraged.