Journal of Northern Agriculture ›› 2018, Vol. 46 ›› Issue (6): 77-82.doi: 10.3969/j.issn.2096-1197.2018.06.15

• 著者文摘 • Previous Articles     Next Articles

Control efficacy of plant elicitor IR-18 against Orobanche cumana and its application techniques

YUN Xiaopeng[1];DU Lei[1];BAI Quanjiang[1];SUN Tao[2];TIAN Xiaoyan[1];SU Yajie[1];ZHANG Guang[3]   

  1. [1]Plant Protection Institute,Inner Mongolia Academy of Agricultural&Animal Husbandry Sciences,Hohhot 010031,China;[2]Gannan Sunflower Research Institute,Gannan 162100,China;[3]Urad Front Banner Agricultural Technology Extension Center,Ula Mountain 014400,China
  • Received:2018-09-25 Online:2018-08-19 Published:2019-08-19

Abstract: Some widely cultivated confectionery sunflower varieties including JK601 and SH363,which have good commercial characters,lack efficient supplementary measures against Orobanche cumana.In 2017,a kind of plant elicitor(IR18)was introduced and its field application techniques were studied.Results showed that the agent had good control efficacy on Orobanche cumana,but there were great differences among varieties.It performs better on JK601,which has certain resistance to Orobanche cumana,than sensitive SH363;and the control efficacy was proportional to the concentration of the elicitor solution.The 400-fold dilution of IR18 had better efficacy than 600-fold and 800-fold dilutions,while the best application time was the 6~10 leaf stage of sunflower.It can be applied one time at 400-fold dilution or 2~3 times at 600-fold dilution and 800-fold dilution,and the control efficacy through 32 days after the first application can be maintained at 100%.

Key words: Sunflower;Orobanche cumana;Plant elicitor IR-18;Control efficacy

CLC Number: 

  • S451