Laboratory evaluation of the efect of seven plant extracts for the control of Colletotrichum sp, causal agent of anthracnose on tomato growing tree.
DOI:
https://doi.org/10.15649/2346075X.214Keywords:
Plant extracts, pathogen, anthracnose, inhibition.Abstract
Was evaluated in the laboratory the effect of seven plant extracts of Neem leaves and fruit (Azadirachta indica) leaves of
lemon grass (Swinglea glutinosa), leaves of papaya (Carica papaya), Pringamosa leaves (Urtica dioica), eucalyptus leaves
(Eucalyptus camaldulensis Dehn) fruits of garlic (Allium sativum L.) and fruits of pepper (Capsicum annuum) in the control of the
fungus Colletotrichum sp causal agent of anthracnose in tomato crop tree (Cyphomandra betacea). The pathogen was isolated
on PDA medium from tomato fruit tree, the extracts were obtained taking into account the process by (Marin, et. Al 2007), which
consists of chopping and blending plant material deposited in plastic bucket, add water ratio 2.5:1 (water: sample processed,
vol.: w), subjecting to fermentation for 24 hours. The produto was filtered using sterile gauze and package them for further
evaluation. The concentrations of the treatments that worked were 25, 50, 75 and 100% of the infectious agent, determining the
degree of inhibition of the pathogen in Petri dishes. The best results were obtained with the application of eucalyptus leaves,
since its effect was 100% at all concentrations, without neglecting the fruits of the Neem and garlic with inhibition percentages
of 75 and 60% respectively, had a behavior directly proportional to the concentrations used, since the greater the amount of
extract the inhibitory effect was better in this case 75% and 100%.
References
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