ECO-FRIENDLY MANAGEMENT OF ROOT ROT OF CUCUMBER
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Date
2023-11-09
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Publisher
UHF,NAUNI
Abstract
ABSTRACT
Root rot caused by Fusarium solani is one of the important diseases of cucumber. The present
investigation entitled “Eco-friendly management of root rot of cucumber” was carried out during
cropping season 2022 and 2023 with the objective to record the status of the disease, to evaluate the
different germplasms of cucumber and to develop eco-friendly management strategies against the
disease. Out of the 12 locations surveyed in the district, maximum disease incidence was recorded at
Shakli (21.3%) followed by Jabbal (20.8%). Symptoms of the disease includes yellowing of leaves
followed by necrosis that ultimately leads to the complete wilting of the plant. The fungus was
isolated from diseased samples and identified as Fusarium solani on the basis of cultural and
morphological characteristics. Among the two methods of proving pathogenicity, mass culture was
found to be more effective having incubation period of 13 days. Among seventeen germplasms of
cucumber, Asha and AZCV123 were found to be resistant to disease with 8.33% disease incidence.
Among the bio agents, Trichoderma sp. 2 was found the most effective in inhibiting the mycelial
growth (70.58%) in dual culture method. Among botanicals, Azadirachta indica was found the most
effective with overall mycelial inhibition 66.33 per cent followed by Lantana camara with 58.62 per
cent mycelial inhibition. Among the biofumigants, Mustard was found to be most effective against the
pathogen with overall mycelial inhibition 69.35 per cent followed by cabbage with 63.65 per cent
inhibition. Among the combination of bioagents, botanicals and biofumigants, Trichoderma sp. 2 and
mustard was found to be the most effective with 100 per cent disease control and Trichoderma sp. 2,
neem and mustard with 84.84 per cent disease control. Among SAR inducers, BABA (ß-aminobutyric
acid) was found the most effective with 100 per cent disease control followed by ASM with 85.14 %
disease control. Among the combinations of SAR inducers and fungicides, combination of
BABA(@1mM) and carbendazim (0.05%) was found to be the most effective with 100 per cent
disease control followed by BABA (@0.5mM) and carbendazim (0.05%) with 98.34 per cent disease
control. From the current studies, it is concluded that combination of Trichoderma sp. 2 and Mustard
and SAR inducer BABA are most effective against root rot of cucumber caused by Fusarium solani