... fungi, black pepper, horticulture crops, detection, identification1.IntroductionThe diversity of climate and geographyallowed planting many crops. The tropical crops largely plant at Northern ... horticultural crops. The result of this study has helped scientist to rapidly and precisely detect Phytophthora pathogen thatcausing diseases on black pepper, rubber trees, citrus tree crops, etc. ... (Table 8).Table 8. Effect of rose petals on Phytophthora isolation from soil and root of several crops CropsSolutionSoilRootTotal of soilsamplesSampleisolated (%)Total of rootsamplesSample...