EVALUATION OF MICROBIOLOGICAL PRODUCTS TO CONTROL GREY MOULD IN STRAWBERRIES

A. Balode
Within small distances, climate is subject to considerable variations – from heavy precipitation and limited sunshine to moderate, dry and warm. Throughout the growing season, damp and cold conditions promote spreading of Botrytis cinerea. It is necessary to both suppress the pathogens and to reduce environmental damage; therefore, experimentation with and application of microbiological products have a promising future in horticultural production. The strawberry (Fragaria × ananassa) cultivar ‘Polka’ was used for this trial. Two microbiological products were evaluated for their ability to reduce Botrytis infection. BioMikss is a mixture of microorganisms that contains cells of 7 various bacteria strains (Azotobacter chroococcum E-t, Polyangium cellulosum 5-t, Polyangium cellulosum 56, Pseudomonas putida 48-t, Rhizobium meliloti 15, Streptomyces cellulosae D and Streptomyces griseoviridis P-t) and cells of two various fungus strains (Trichoderma harzianum 7-t and Trichoderma viride A-L), and Trihodermin (Trichoderma harzianum 8-21 and Trichoderma viride 1-5). Two forms of BioMikss and Trihodermin were used: dry powder (103-105 CFU g-1) and solution (107-109 CFU ml-1). In the field trial, either a dry powder form (10 kg ha-1) was applied as a soil treatment or a water suspension (300 L ha-1) to plants three times during the growing period. The results proved that BioMikss in solution form was the most effective for reducing disease incidence under field conditions. When compared to control plants, treated plants showed significantly higher resistance to Botrytis cinerea and increased yield of treated strawberry was observed. The results indicated it is important to apply microbiological products before Botrytis cinerea infection has started to spread.
Balode, A. (2014). EVALUATION OF MICROBIOLOGICAL PRODUCTS TO CONTROL GREY MOULD IN STRAWBERRIES. Acta Hortic. 1053, 85-90
DOI: 10.17660/ActaHortic.2014.1053.6
https://doi.org/10.17660/ActaHortic.2014.1053.6
Botrytis cinerea, Fragaria × ananassa, open environment, Trichoderma
English

Acta Horticulturae