EFFECT OF BIOLOGICAL PRODUCT TRIHODERMIN B-J ON BOTRYTIS SUPPRESSION AND LILY BULB DEVELOPMENT

The lily (Lilium L.), a vegetatively propagated perennial crop, is one of the most economically important bulbous plants.
It is grown worldwide as a cut flower, a garden plant and a pot plant.
The purpose of this trial was to evaluate the use of a biological product – Trihodermin B-J that contains cells of the microscopic fungi Trichoderma harzianum 8-21 and Trichoderma viride 1-5. Under open air conditions, the effect of Trihodermin B-J, was tested on three cultivars – Lilium longiflorum × Asiatic cultivar ‘Sonora’ as well Asiatic hybrid lilies ‘Meteorits’ and ‘Vigante’ during the summer of 2009. In the field trial, either a dry powder form (10 kg ha^-1) was applied as a soil treatment or a water suspension (200 L ha^-1) was applied to plants four times during the growing period.
When compared to control plants, treated plants showed significantly higher resistance to Botrytis cinerea. The results proved that Trihodermin B-J in liquid form was the most effective for reducing disease incidence under field conditions.
Bulb size was also positively affected by the application.

II International Symposium on the Genus Lilium

A. Balode

Botrytis cinerea, microorganisms, open air conditions, resistance

https://doi.org/10.17660/ActaHortic.2011.900.9