| 摘要 |
A composition for rhizoctonia leaf blight and bomb blight of warm-season grasses preventing from disaster and a manufacturing method of the extracts are provided to be environment-friendly without agricultural chemical and to remove effectively cause bacillus of the brown patch breaking out in the paper lawn grass. A composition for rhizoctonia leaf blight and bomb blight of warm-season grasses preventing from disaster includes leaf extract of Apocynaceae plant an active ingredient. The Apocynaceae plant is one selected from a group consisting of Nerium indicum, Nerium indicum for. plenum, Nerium indicum for. lutescens, Nerium indicum for. leucanthum and Nerium oleander. A manufacturing method of the extracts comprises steps of: drying the leaf of the Apocynaceae plant for 48 ~72 hours in 60~80°C; producing the dried leaf to powder; and mixing the flesh powder 50~100g in solvent 250~500g at weight ratio of the flesh powder and the solvent of 1 : 5, leaving the mixture for 24~48 hours in room temperature and filtering it. |
