Comparative Efficacy of Fungicides against Charcoal Rot of Sunflower with the Evaluation of Different Respective Plant Traits under Greenhouse Conditions

Abstract

| The following research was designed to evaluate the most appropriate concentration of two different fungicides against the charcoal rot of sunflower caused by Macrophomin phaseolina under greenhouse conditions. The treatments viz. Success, Nativo and Control with the concentrations of 2, 4 and 6mM were used with three replications under completely randomized design in greenhouse conditions. Nativo had given the most significant results in all studied traits as compared to all other treatments at the concentration of 6mM. The results showed that Nativo exhibited the maximum germination % (71.47), seedling length (23.67, 35.00 and 47.33 cm), number of leaves/plant (6.33, 7.67 and 11.33), minimum disease incidence (12.33, 11.12 and 10.13 %), minimum disease severity (26.80, 24.67 and 11.37 %) and maximum plant survival (89.62, 94.35 and 98.37%) at 15, 30 and 45 days after treatment, respectively. The application of Success @ 6mM was also good but lowers than the Nativo. The poor performance and maximum disease incidence and disease severity were recorded from the controlled pots. Among all the treatments the application of Nativo @ 6 mM had given maximum control of charcoal rot. So, it suggested that the application of Nativo @ 6 mM may be best for the control of charcoal rot.