SUBSTANCE WITH HERBICIDIAL ACTIVITY AMM4672* ITS PREPARATION AND HERBICIDE CONTAINING THE SAME FOR AGRICULTURE AND HORTICULTURE

摘要

NEW MATERIAL:AM-3672, which has following properties, (1) elemental analysis: C, 62.82%; H, 7.35%; N, 4.88%; (2) molecular weight: 574; (3) melting point, 230 deg.C; (4) specific rotatory power, [alpha]D20=+137 deg. (c=1 in chloroform); (5) the infrared spectrum is given in the chart and (6) the reactions with anilin- hydrogen, ninhydrin, iodide and ferric chloride are negative. USE:Herbicide; it does not harm rice but acts very effectively on weeds belonging to true grasses, such as barny yard or manna grass, thus having extremely large selectivity between genera. Further it shows herbicidial activity also against umbrella plant that is difficult to kill. PREPARATION:Streptomyces hygroscopicus (FERM-4335) is cultured.