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<p>A field study conducted over two years at a certified organic farm in Morocco, located in an arid climate, to investigate the effect of an integrated biofertilization approach on the abundance and infectivity of Arbuscular Mycorrhizal Fungi (AMF), soil fertility, yield, and fruit quality of date palms. The biofertilization approach included three management practices: the application of compost, inoculation with a consortium of native PGPR strains originally isolated from date palms in the Drâa-Tafilalet region (<i>Pseudomonas koreensis</i>, <i>Serratia nematodiphila</i>, <i>S. marcescens</i>, and <i>Klebsiella</i> sp.), and mixed cropping with sorghum. Accordingly, four treatments were established in this study: 1) mixed-cropping with sorghum, 2) PGPR inoculation, 3) sorghum + PGPR, and 4) control (without sorghum or PGPR). All treatments received compost as an organic amendment. Results revealed that mixed-cropping with sorghum significantly increased AMF colonization intensity and spore density by more than 50% and 29%, respectively. Sorghum association also resulted in a significant increase in organic matter concentrations of up to 2.95% against 2.45% in monocropping soils. The integrated biofertilization approach resulted in the highest yield with an increase rate of 10.6% and 12.1% in the first and the second year, respectively, compared to date palms receiving compost alone. Similarly, the mineral composition and quality characteristics of date fruits were significantly improved. The enhancement of soil fertility and date palm productivity under harsh environmental conditions represents a first step towards the adoption of sustainable practices in the region and in similar areas.</p>

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Effect of Biofertilizer and nurse plants on mycorrhizal status, soil fertility, and date palm productivity under organic farming system

  • 期刊论文

  • 发表日期：

    2026年2月14日

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  • Ou-Zine Mohamed,
  • Symanczik Sarah,
  • El Kinany Said,
  • Aziz Larbi,
  • Fagroud Mustapha,
  • Abidar Ali,
  • Mäder Paul,
  • Achbani El Hassan,
  • Haggoud Abdellatif,
  • El Hilali Rania,
  • Abdellaoui Mustapha,
  • Bouamri Rachid

摘要

A field study conducted over two years at a certified organic farm in Morocco, located in an arid climate, to investigate the effect of an integrated biofertilization approach on the abundance and infectivity of Arbuscular Mycorrhizal Fungi (AMF), soil fertility, yield, and fruit quality of date palms. The biofertilization approach included three management practices: the application of compost, inoculation with a consortium of native PGPR strains originally isolated from date palms in the Drâa-Tafilalet region (Pseudomonas koreensis, Serratia nematodiphila, S. marcescens, and Klebsiella sp.), and mixed cropping with sorghum. Accordingly, four treatments were established in this study: 1) mixed-cropping with sorghum, 2) PGPR inoculation, 3) sorghum + PGPR, and 4) control (without sorghum or PGPR). All treatments received compost as an organic amendment. Results revealed that mixed-cropping with sorghum significantly increased AMF colonization intensity and spore density by more than 50% and 29%, respectively. Sorghum association also resulted in a significant increase in organic matter concentrations of up to 2.95% against 2.45% in monocropping soils. The integrated biofertilization approach resulted in the highest yield with an increase rate of 10.6% and 12.1% in the first and the second year, respectively, compared to date palms receiving compost alone. Similarly, the mineral composition and quality characteristics of date fruits were significantly improved. The enhancement of soil fertility and date palm productivity under harsh environmental conditions represents a first step towards the adoption of sustainable practices in the region and in similar areas.