EVALUATION OF FUNGINIL (TRICHODERMA HARZIANUM FORMULATION) FOR THE CONTROL OF BOTRYTIS CORM ROT (BOTRYTIS GLADIOLORUM) ON GLADIOLUS (GLADIOLUS HYBRIDUS) VARIETIES

Abstract

Evaluation of the effect of dipping of corms of gladiolus (Gladiolus hybridus) in three
concentrations (0.5; 1.0 and 1.5%) of Funginil (Trichoderma harzianum formulation) against Botrytis
gladiolorum isolate BG-4 on the growth and yield parameters of White Enchantress and Sheherzade
varieties were carried out in pot culture and under field experiments, respectively. The result of the
pot experiment on White Enchantress revealed that there was a highly significant reduction in
disease incidence in treatment of Funginil over both the inoculated and uninoculated controls. As
the rate of Funginil increased the percentage of sprouting also increased whereas the disease
incidence decreased significantly. In the field trial, the maximum plant height, number of leaves,
number of spikes, rachis length, and number of floret, length of floret and diameter of first floret
were obtained with the application of 1.5% Funginil. The height decreased with the increasing
number of the leaves, spikes, floret, length of floret and floret diameters as well as rachis length
increased with increasing rates of Funginil. These results suggest that Funginil can be used as
biocontrol agent against corm rot (B. gladiolorum) of Gladiolus (Gladiolus hybridus) varieties.