Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (4): 741-745.DOI: 10.3969/j.issn.1000-2561.2019.04.018

• Crop Pests, Diseases and Their Control, Environmental Protection • Previous Articles     Next Articles

Herbicidal Activity Evaluation of Sulfentrazone and Its Safety to Sugarcane

MA Yonglin,MA Yuefeng,GUO Chenglin,WANG Yanhui,HUANG Huiye,QIN Jianlin()   

  1. Institute of Plant Protection, Guangxi Academy of Agricultural Sciences / Guangxi Key Laboratory for Biology of Crop Diseases and Insect Pests, Nanning, Guangxi 530007, China
  • Received:2018-10-22 Revised:2018-12-17 Online:2019-04-15 Published:2019-05-21
  • Contact: Jianlin QIN

Abstract:

In order to explore its application prospect in sugarcane field in Guangxi, the weed controlling spectrum, herbicidal activity and safety of sulfentrazone to sugarcane were tested under greenhouse conditions. The results showed that sulfentrazone displayed good controlling effect on the common grasses, broadleaf weeds and sedge weeds in sugarcane. The fresh weight control effect was higher than 90% to Echinochloa colonum, Eleusine indica, Digitaria sanguinalis, Cyperus rotundus, Amaranthus viridis and Solanum nigrum as the treatment dose was 70 g/hm 2 while the fresh weight control was higher than 80% to Rottboellia cochinchinensis, Oxalis corymbosa and Cynanchum chinense. Sulfentrazone howed higher herbicidal activity against E. colonum, E. indica, D. sanguinalis and C. rotundus than diuron. The selectivity index between ‘Xintaitang 22’ (a sugarcane variety) and E. colonum, E. indica, D. sanguinalis, C. rotundus was 2.04, 2.67, 2.95 and 2.25, respectively, which was much higher than that of diuron with corresponding selectivity index of 1.74, 1.68, 1.80 and 1.24, respectively. The selectivity index between ‘Guitang 46’ (another sugarcane variety) and the weed species mentioned above was similar to that of ‘Xintaitang 22’. This study indicated that sulfentrazone had a good control effect on a variety of major weeds in sugarcane fields and it was safe to the two sugarcane varieties that planted in large-scale in Guangxi. Therefore, it could be used as one of the alternative agents for pre-emergence herbicides in sugarcane fields.

Key words: sulfentrazone, herbicidal activity, weed control spectrum, sugarcane, safety