THE ROLE OF Pseudomonas STRAINS AND ARBUSCULAR MYCORRHIZA FUNGI AS ORGANIC PHOSPHATE–SOLUBILIZING IN THE YIELD AND QUALITY IMPROVEMENT OF STRAWBERRY (Fragaria × ananassa Duch., cv. Selva) FRUIT

Mohammad Hossein Ansari

Department of Agronomy and Plant Breeding, Rasht Branch, Islamic Azad University, Rasht, Iran

Davood Hashemabadi

Department of Horticulture Science, Rasht Branch, Islamic Azad University, Rasht, Iran

Maryam Mahdavi

Department of Horticulture Science, Rasht Branch, Islamic Azad University, Rasht, Iran

Behzad Kaviani




Abstract

This study evaluated the effect of Pseudomonas strains and arbuscular mycorrhiza fungi (AMF) in enhancing strawberry yield and phenolic and antioxidant capacity on a phosphorus (P) deficient calcareous soil. The experiments were conducted in three replicates with six treatments (four Pseudomonas strains, AMF and control) and three rates of P-fertilizer (0, 75, 150 kg P ha–1). Application of higher phosphate rates decreased total antioxidant capacity, total phenolic and flavonols content, whereas AMF and Pseudomonas strains increased quality and P concentration of fruit. The use of AMF and Pseudomonas strains resulted in better quality when used along with 75 kg P ha–1. These results demonstrated that the rhizospheric microorganisms improved the quality of fruit, especially when they applied in combination with lower rates of chemical fertilizers. Therefore, application of these microorganisms in sustainable agriculture is recommended.

Keywords:

antioxidant capacity, fruit yield, phenolic content, rhizospheric microorganisms

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Published
2019-08-27



Mohammad Hossein Ansari 
Department of Agronomy and Plant Breeding, Rasht Branch, Islamic Azad University, Rasht, Iran
Davood Hashemabadi 
Department of Horticulture Science, Rasht Branch, Islamic Azad University, Rasht, Iran
Maryam Mahdavi 
Department of Horticulture Science, Rasht Branch, Islamic Azad University, Rasht, Iran
Behzad Kaviani 



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