Pomegranate-quinoa-based agroforestry system: An innovative strategy to alleviate salinity effects and enhance land use efficiency in salt-affected semiarid regions

Abidi lham, Daoui Khalid, Abouabdillah Aziz, Bazile Didier, Sidikou Abdel Aziz Hassane, Belqadi Loubna, Mahyou Hamid, Alaoui Si Bennasseur. 2024. Pomegranate-quinoa-based agroforestry system: An innovative strategy to alleviate salinity effects and enhance land use efficiency in salt-affected semiarid regions. Plants, 13 (18), n.spéc. Worldwide Evaluations of Quinoa and Amaranth—Biodiversity and Food Security under Climate Change Pressures Volume II:2543, 25 p.

Résumé : Salinity is a major problem, impeding soil productivity, agricultural sustainability, and food security, particularly in dry regions. This study integrates quinoa, a facultative halophyte, into a pomegranate-based agroforestry with saline irrigation in northeast Morocco. We aim to explore this agroforestry model's potential in mitigating salinity's effects on quinoa's agronomic and biochemical traits and evaluate the land equivalent ratio (LER). Field experiments in 2020 and 2021 used a randomized block design with three replicates, including monocropping and agroforestry systems, two salinity levels (1.12 and 10.5 dS m−1), four quinoa genotypes (Titicaca, Puno, ICBA-Q4, ICBA-Q5), and a pomegranate control. Salinity significantly decreased total dry matter (40.5%), root dry matter (50.7%), leaf dry matter (39.2%), and root-to-shoot ratio (7.7%). The impact was more severe in monoculture than in agroforestry, reducing dry matter (47.6% vs. 30.7%), grain yield (46.3% vs. 26.1%), water productivity (47.5% vs. 23.9%), and total sugar (19.2% vs. 5.6%). LER averaged 1.86 to 2.21, indicating 86–121% higher productivity in agroforestry. LER averaged 1.85 at 1.12 dS m−1 and 2.18 at 10.5 dS m−1, reaching 2.21 with pomegranate-ICBA-Q5 combination. Quinoa–pomegranate agroforestry emerges as an innovative strategy, leveraging quinoa's salt resistance and agroforestry's potential to mitigate salinity impacts while enhancing land use efficiency.

Mots-clés Agrovoc : Chenopodium quinoa, caractère agronomique, agroforesterie, Punica granatum, utilisation des terres, tolérance au sel, irrigation, taux d'efficacité unité terre, agriculture durable, systèmes agroforestiers, agroécologie, système de culture, diversification, innovation agricole, grenade (fruits)

Mots-clés géographiques Agrovoc : Maroc

Mots-clés libres : Chenopodium quinoa Willd., Grain yield, Agroforest system, Pomegranate, Salt stress

Classification Agris : F08 - Systèmes et modes de culture
H50 - Troubles divers des plantes

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement hors UE : Institut Agronomique et Vétérinaire Hassan II

Projets sur financement : (MAR) Quinoa as a climate-smart crop diversification option for higher income generation from marginal lands in the Mediterranean

Auteurs et affiliations

• Abidi lham, IAV Hassan II (MAR) - auteur correspondant
• Daoui Khalid, National Institute of Agricultural Research, Regional Center of Meknes (MAR)
• Abouabdillah Aziz, ENAM (MAR)
• Bazile Didier, CIRAD-ES-UMR SENS (FRA) ORCID: 0000-0001-5617-9319
• Sidikou Abdel Aziz Hassane, IAV Hassan II (MAR)
• Belqadi Loubna, IAV Hassan II (MAR)
• Mahyou Hamid, INRA (MAR)
• Alaoui Si Bennasseur, IAV Hassan II (MAR)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610332/)

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