Enhancing Almond Seed Germination and Growth Through Microbial Priming: A Biostimulation Strategy for Sustainable Agriculture

Abstract:

Microbial priming is an emerging strategy in sustainable agriculture that involves the use of beneficial microorganisms to enhance agricultural productivity and sustainability. This innovative approach leverages the natural interactions between plants and microorganisms to promote plant growth and improve soil health. This study explores the application of microbial priming on almond seeds, focusing on the biostimulant effect of a soil-based microbial extract to enhance almond seed germination and seedling growth. Methods: Almond seeds were subjected to microbial priming using a microbial wash extracted from a rhizospheric native soil sample of Pistacia lentiscus. The experiment evaluated germination rates, seedling growth parameters, and conducted comprehensive physico-chemical and microbial soil analyses. AMF (Arbuscular Mycorrhizal Fungi) colonization was also measured. Results: Microbial priming significantly improved germination rates and enhanced seedling growth compared to untreated controls. Soil analysis revealed increased nutrient availability and a higher population of beneficial microorganisms. The AMF colonization was notably higher in treated plants. Conclusions: Microbial priming effectively enhances almond seed germination and seedling growth, demonstrating its potential as a sustainable biostimulation strategy in agriculture. This practice not only boosts crop productivity, but also promotes soil health by enriching microbial communities and improving nutrient cycling. Integrating microbial priming into almond cultivation can lead to more sustainable and resilient agricultural systems, reducing dependency on chemical inputs and enhancing overall crop performance.