EFFICACY  OF  FUNGICIDES,  BIOCONTROL  AGENTS  ANDBOTANICALS  AGAINST  ALTERNARIA  LEAF  BLIGHT  (Alternariasesami)  IN  SESAME  CROP

P. LAKSHMI PRAVALLIKA; S.L. BHATTIPROLU; K. RADHIKA; M. RAGHAVENDRA

EFFICACY OF FUNGICIDES, BIOCONTROL AGENTS ANDBOTANICALS AGAINST ALTERNARIA LEAF BLIGHT (Alternariasesami) IN SESAME CROP

2023

P. LAKSHMI PRAVALLIKA | S.L. BHATTIPROLU | K. RADHIKA | M. RAGHAVENDRA

Seed borne fungus, Alternaria sesami associated with sesame is the most destructive pathogen.Laboratory experiment was carried out during Dec.,2017 to Nov., 2018. The fungicides viz., hexaconazole@ 0.2% and combination product of carbendazim 12% + mancozeb 63% @ 0.2%, bio-control agents viz.,Trichoderma viride @ 10 g/kg and Pseudomonas fluorescens @ 10 g/kg seed and botanicals viz., garlicclove extract 10% and neem leaf extract 10% against Alternaria blight of sesame var. YLM-17 in potculture showed that seed treatment with combination product of carbendazim 12% + mancozeb 63% @0.2% was effective in reducing the per cent disease index (PDI) of Alternaria blight by 63.20 per cent andimproving plant height (44.11 cm), number of capsules per plant (12.53), seed yield per plant (2.23 g) andharvest index (14.17%) when compared to control (without seed treatment). Hexaconazole, T. viride andgarlic clove extract recorded 53.12%, 47.48% and 35.90% decrease in PDI, respectively. Sesame seedcollected from the pots treated with carbendazim 12% + mancozeb 63% @ 0.2% recorded highest seedgermination (99.33%), seedling length (17.37 cm), seedling vigour index-I (1725) and seedling vigourindex-II (3.97) followed by T. viride with 98.33%, 16.75 cm, 1647 and 3.54, respectively

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