The effect of cogongrass extract in inhibiting the Colletotrichum sp. that causes anthracnose disease in bird’s eye chili
Paper Details
The effect of cogongrass extract in inhibiting the Colletotrichum sp. that causes anthracnose disease in bird’s eye chili
Abstract
Anthracnose can be caused by fungi consisting of two types, Gloeosporium piperatum and several species of Colletotrichum sp. Avoiding the negative effects of chemical fungicides to control anthracnose, biofungicides are more ecologically safe. Cogongrass (Imperata cylindrica) extract contains secondary metabolites in the form of saponins, alkaloids, terpenoids, flavonoids, and tannins which can play a role as biofungicides. Aimed to determine the effect of cogongrass extract in inhibiting the growth of Colletotrichum sp. on Bird’s eye chili and to know the best concentration of Cogongrass extract to inhibit the growth of the Colletotrichum sp. on bird’s eye chili. This research was conducted from April to August 2022 at the Agroecotechnology Production Laboratory, Faculty of Agriculture, University of Lambung Mangkurat. This study used a research design in the form of a completely randomized design (CRD) with 5 treatments and 5 replications, so that 25 experimental units were obtained. The levels of treatment given were as follows: A0(-) = negative control (distilled water), A0(+) = positive control (Tandem 325 SC), A1 = 10% cogongrass extract, A2 = 20% cogongrass extract, and A3 = 30% cogongrass extract. The results showed that cogongrass extract had a positive effect on inhibiting the growth of Colletotrichum sp. which isolated from bird’s eye chili on PDA media. The results of the analysis of variance and the DMRT test showed that A1, A2, and A3 were significantly different from A0(-). Treatment with the best concentration to inhibit the growth of Colletotrichum sp. is A3 (30% cogongrass extract).
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