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The effect of biopreparations on root growth and microbiology activity in the rhizosphere of apple trees

100%

Derkowska E., Sas Paszt L., Harbuzov A., Trzcinski P., Bogumil A.

Acta Scientiarum Polonorum. Hortorum Cultus

2014

tom 13

nr 6

The aim of the study was to determine the effect of various biopreparations on the growth of the apple root system, the number of spores of AMF, the total number of bacteria and microscopic fungi in the rhizosphere soil, and the degree of mycorrhizal association in the roots of two apple tree cultivars. The experiment was established in the spring of 2009 in the Experimental Orchard of the Institute of Horticulture in Dąbrowice. The research objects were one-year-old maidens of the apple cultivars ‘Topaz’ and ‘Ariva’ grafted on M26 rootstock. The trees were treated with the following biopreparations: control, control NPK (standard NPK fertilization), manure, Micosat F + manure, Humus UP, Humus Active + Aktywit PM, BioFeed Amin + manure, BioFeed Quality + manure, Tytanit + manure, Vinassa + manure, Florovit Eko, and Florovit Pro Natura. Treatment of ‘Topaz’ and ‘Ariva’ apple trees with the biopreparations Micosat F, Humus UP, Humus Active + Aktywit PM, BioFeed Amin, Vinassa, Florovit Eko and Florovit Pro Natura produced positive effects on the growth of apple roots and their mycorrhizal frequency, and the size of the populations of microorganisms in the rhizosphere soil.

Identification of new Trichoderma strains with antagonistic activity against Botrytis cinerea

100%

Bogumil A., Paszt L. S., Lisek A., Trzcinski P., Harbuzov A.

Folia Horticulturae

2013

tom 25

nr 2

The antagonistic activity of 52 isolates of Trichoderma spp. against Botrytis cinerea was tested in in vitro conditions using the dual culture technique. The results revealed that all of the Trichoderma isolates had the ability to inhibit the mycelial growth of grey mould. The percentage reduction in the growth of Botrytis cinerea after six days of incubation at 25°C varied between 45-78%. The isolates Tr43 and Tr52 showed the highest antagonistic activity (Tr43 - 76%; Tr52 - 78%). Biochemical and molecular identification indicated that both isolates were T. atroviride. The isolates showed differences in the utilisation of 11 to 96 different carbon sources. Additional biochemical tests revealed the ability of Tr43 and Tr52 to produce siderophores, indole-3-acetic acid and chitinases. Neither of the isolates gave positive results regarding phosphate solubilisation on Pikovskaya’s medium.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Folia Horticulturae

2 Bogumil A.

2 Harbuzov A.

2 Trzcinski P.

1 Derkowska E.

1 Lisek A.

1 Paszt L. S.

1 Sas Paszt L.

1 2014

1 2013

Wyniki wyszukiwania

The effect of biopreparations on root growth and microbiology activity in the rhizosphere of apple trees

Identification of new Trichoderma strains with antagonistic activity against Botrytis cinerea