Evaluation of Different Fungicides against Macrophomina phaseolina (Tassi) Goid. Causing Dry Root Rot of Chickpea (Cicer arietinum L.) invitro
R. Lokesh, K. B. Rakholiya, Mayur R. Thesiya
Abstract
Chickpea (Cicer arietinum L.) is one of the major legume pulse crops and it is majorly grown in India and other semi-arid regions of the world. Dry root rot of chickpea is the most destructive disease of chickpea. Therefore, in present studies fungicides (six systemic, seven non systemic and six ready mix fungicides) were tested in vitro at three different concentrations by poisoned food technique for evaluating their efficacy against M. phaseolina. Among systemic fungicides, significantly highest average mycelial growth inhibition was with carbendazim (85.88%), thiophanate methyl (84.32%) followed by hexaconazole (75.29%) was also considerably effective fungicide but tebuconazole (47.06%), azoxystrobin (36.08%), propiconazole (36.86%) proved comparatively less in their efficacy against M. phaseolina. Among non-systemic fungicides, significantly highest average mycelial growth inhibition over control was recorded in mancozeb (90.20%), followed by chlorothalonil (88.24%). The remaining fungicides viz., zineb (78.04%), thiram (76.47%), and propineb (49.41%), were moderately effective. While sulphur (23.53%) recorded least effective in growth inhibition as compared to other fungicides against M. phaseolina. Among ready mix fungicides, significantly highest per cent growth inhibition over control was recorded (88.24%) in carbendazim 12% + mancozeb 63% followed by carboxin 37.5% + thiram 37.5%, (83.14%). The remaining fungicides viz., pyraclostrobin 5% + mitiram 55% (70.59%), captan 70% + hexaconazole 5% (76.47%) and pyraclostrobin 5% + mitiram 55% (59.21%) were moderately effective. While pyraclostrobin 12.5% + epoxiconazole 4.7%, (38.82%) and hexaconazole 4% + zineb 68% (27.45%), recorded least effective in growth inhibition as compared to other fungicides against M. phaseolina.