内吸杀菌剂拌种灵防治棉苗立枯病、炭疽病的研究

本文是报道内吸杀菌剂拌种灵(2—氨基—4—甲基—5—甲酰苯胺基噻唑)及其复配剂拌种双(拌种灵+福美双)对棉苗立枯病、炭疽病的防治效果的研究。通过室内活性测定及田间试验,证明拌种灵对立枯病具有相当或略高于常用药剂五赛合剂(五氯硝基苯+赛力散)、稻脚青(甲基砷酸锌)的效果,而拌种双除保持了对立枯病与拌种灵相当的效果外,对炭疽病的防效与五赛合剂相近,略低于稻脚青。使用拌种灵或拌种双的棉籽发芽率近于未处理的对照,后期长势良好。拌种灵对立枯病效果优于拌种双,而拌种双对炭疽病效果优于拌种灵。

ON THE CONTROL OF RHIZOCTONIA SOLANI KÜHN AND COLLETOTRICHUM GOSSYPII SOUCH OF COTTON SEEDLING WITH NEW SYSTEMIC FUNGICIDE BANZHONGLING

The present article deals with the control effect of new systemic fungicide banzhongling (2-amino-4-methyl-5-carboxanilidothiazole) and its pesticidal complex Banzhongshouang (Banzhangiing+TMTD) against Rhizoctonia silani and Colletotrichum gossypii diseases of cotton seedling-Results obtained from the laboratory and field trials Proved that the control effect of Banzhongling against R. solani was nearly the same as or somewhat better than Wusaiheji (Pentachloronitro benzene+Seresan) and Daojiaoqing (methyl arsonic acid zinc salt). As for the Banzhongshouang) its effect against R. solani is as good as that of Banzhongling and, against C. gossypii, similar to that of Wusaiheji, but a little leses than that of Daojiaoqing. The germination Percentage of cotton seeds which have been treated with Banzhongling or Banzhongshouang is quite close to the untreated check and shows a normal growth in the cotton field later.The authors suggest that Banzhongling and Banzhongshouang be applied in the cotton plant district which is naturally infested with R. solani seedling disease, and that Banzhongshouang be also used in the prevalent cotton seedling Pathogen is C. gossypii.