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<p>Drought decreases crop yields by impairing the acquisition of nutrients, development of the plants, and yield, and therefore requires the application of sustainable fertilizers to enhance the resilience of the plants. This greenhouse study evaluates the potential of a&#xa0;controlled-release vitreous fertilizer (VF) as an alternative to conventional nitrogen-phosphorus-potassium (NPK) fertilizer, with a&#xa0;focus on improving plant growth, yield, and nutrient assimilation under well-watered (WW) and drought stress (DS) conditions. The experiment included twelve treatments: control (Ct), NPK, VF, arbuscular mycorrhizal fungi (AMF), combination of NPK and AMF (NPK + AMF), and combination of VF and AMF (VF + AMF), each applied under WW and DS conditions. One of the major objectives was to study the potential synergy of VF and AMF to enhance the productivity of durum wheat. Of particular interest is the nutrient assimilation through the modulation of phosphatase activities. The experiment demonstrated that VF + AMF significantly improved enzymatic activity and nutrient acquisition, particularly in DS, compared to NPK + AMF. VF + AMF produced a&#xa0;20% increase in thousand-grain weight compared to NPK, as well as a&#xa0;44% increase in leaf phosphorus concentration in drought. In the rhizosphere, VF + AMF improved available phosphorus by 31% over NPK. Root acid phosphatase activity was one-fold higher with VF + AMF under DS compared to the negative control. Additionally, VF + AMF promoted mycorrhizal colonization, demonstrating successful synergy between the two fertilizers. Using a&#xa0;combination of controlled-release VF and AMF provides an environmentally friendly way to tackle drought stress. This approach helps improve soil health, makes nutrients more accessible, and ultimately enhances plant productivity.</p>

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Enhancing Phosphorus Uptake Under Drought Through the Dual Effects of Controlled-Release Vitreous Fertilizer and Arbuscular Mycorrhizal Fungi On Phosphatase Activity

  • 期刊论文

  • 发表日期：

    2025年6月19日

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  • Nizar El Mazouni,
  • Mohamed Mesnaoui,
  • Abdelilah Meddich

摘要

Drought decreases crop yields by impairing the acquisition of nutrients, development of the plants, and yield, and therefore requires the application of sustainable fertilizers to enhance the resilience of the plants. This greenhouse study evaluates the potential of a controlled-release vitreous fertilizer (VF) as an alternative to conventional nitrogen-phosphorus-potassium (NPK) fertilizer, with a focus on improving plant growth, yield, and nutrient assimilation under well-watered (WW) and drought stress (DS) conditions. The experiment included twelve treatments: control (Ct), NPK, VF, arbuscular mycorrhizal fungi (AMF), combination of NPK and AMF (NPK + AMF), and combination of VF and AMF (VF + AMF), each applied under WW and DS conditions. One of the major objectives was to study the potential synergy of VF and AMF to enhance the productivity of durum wheat. Of particular interest is the nutrient assimilation through the modulation of phosphatase activities. The experiment demonstrated that VF + AMF significantly improved enzymatic activity and nutrient acquisition, particularly in DS, compared to NPK + AMF. VF + AMF produced a 20% increase in thousand-grain weight compared to NPK, as well as a 44% increase in leaf phosphorus concentration in drought. In the rhizosphere, VF + AMF improved available phosphorus by 31% over NPK. Root acid phosphatase activity was one-fold higher with VF + AMF under DS compared to the negative control. Additionally, VF + AMF promoted mycorrhizal colonization, demonstrating successful synergy between the two fertilizers. Using a combination of controlled-release VF and AMF provides an environmentally friendly way to tackle drought stress. This approach helps improve soil health, makes nutrients more accessible, and ultimately enhances plant productivity.