Management of cercospora leaf spot of groundnut (Cercospora arachidicola & Cercosporidium personatum) through the use of systemic fungicides

Abstract

Various fungal diseases reduce groundnut yield but Cercospora leaf spot commonly called, Tikka disease is most detrimental one. A field experiment was conducted to evaluate the efficacy of different fungicides and their doses on Cercospora leaf spot of groundnut. Five different fungicides (Chlorothalonil, Propineb, Mancozeb, Nativo and Triazole) having three different doses (prescribed, half & prescribed+half) were used to control Cercospora leaf spot of groundnut. Groundnut variety (YH-14) highly susceptible to Cercospora leaf spot was used. The experiment was laid down in RCBD design. The data were analyzed statistically by Fisher’s analysis of variance technique. Results showed that maximum disease control with high pod yield was observed with Nativo and Triazole treatments. Efficacy of Chlorothalonil was also better than Mancozeb and Propineb. Maximum disease control and pod yield was observed when Nativo was used @ 0.97g/L of water, followed by @ 0.65g/L and 0.32 g/L, respectively. Propineb was the least effective in controlling Cercospora leaf spot of groundnut as well as having minimum pod yield.