Indicator of coffee resistance to leaf rust attack (Hemileia vastatrix) is needed to select superior coffee plants resistant to biotic stress. This study aims to find the relationship between the content of secondary metabolites and the intensity of leaf rust attack. so that it becomes a reference in the selection of future coffee plants. The experimental design used was a completely ... https://megavitamines.shop/product-category/betaine-hcl-pepsin-gentian-bitters/