DOI QR코드

DOI QR Code

Study for Sequential Application of Herbicide to Establish an Efficient Weed Control in Red Pepper Field

고추 밭 잡초 관리를 위한 제초제 체계 처리법 개발

  • Min, Yi-Gi (College of Agriculture, Life and Environment Science, Chungbuk National University) ;
  • So, Yoon-Sup (College of Agriculture, Life and Environment Science, Chungbuk National University)
  • 민이기 (충북대학교 농업생명환경대학) ;
  • 소윤섭 (충북대학교 농업생명환경대학)
  • Received : 2016.09.23
  • Accepted : 2016.12.12
  • Published : 2016.12.31

Abstract

Timely application and the choice of herbicides are crucial for red pepper production since the yield is significantly reduced by weed occurrence. Experiments were conducted to provide efficient weed control methods in red-pepper fields. The results suggest the followings: 1) in the field of prevalent grass weeds, application of pendimethalin EC as pre-emergence herbicide after transplanting followed by tank-mix with pendimethalin and fluazipfop-P-butyl EC as post-emergence at 3-5 leaf stage of Digitalia species gave a good control for 80 days without crop injury, 2) as for grass and other weeds occurrence, sequential application of tank-mix with glufosinate-ammonium SL and pendimethalin at 30 days after transplanting (DAT) followed by glufosinate-ammonium. at < 20 cm of weed height with 30 days' interval provided better weed control than 2-time application of glufosinate-ammonium. single application for 80 days in this trial. 3) To prevent from drifting of non-selective herbicide spray mist into red-pepper at furrow application, glufosinate-ammonium. should be applied at 15 cm of spray nozzle height at 20 DAT (18 cm tall of red pepper), and the spray nozzle should be placed below 30 cm above ground to keep spray drift minimum to red pepper with > 40 cm plant height at 40 DAT.

고추 생산에 큰 영향을 미치는 잡초 방제를 위한 약제처리 체계와 약제 살포 방법을 시험한 결과 다음과 같이 제초제를 2회 체계 처리 방법이 효율적이었다. 1) 바랭이가 우점하는 포장에서는 잡초 발아 전 토양 처리제인 pendimethalin를 정식 후에 1차 처리하고 약 20~30일 후 바랭이가 3~5엽기일 때 화본과 선택성 제초제 fluazipfop-P-butyl EC와 pendimethalin EC를 혼용하여 2차 체계 처리를 하면, 2차로 비선택성 제초제 glufosinate-ammonium SL를 살포할 경우와 비교하여 약해의 우려 없이 80일간 효율적으로 잡초를 방제 할 수 있었다. 2) 화본과 잡초 외에 방동사니과와 광엽잡초들이 혼재되어 있을 경우에는 비선택성 제초제 glufosinate-ammonium SL과 토양 처리제 pendimethalin EC를 혼용해서 잡초 초장이 20 cm 정도 자랐을 때 1차 처리하고, 30일 후 다시 잡초가 재생하여 20 cm 이하로 자랐을 때 glufosinate-ammonium SL을 2차로 체계 처리하는 것이 효율적이었다. 3) 비선택성 제초제 glufosinate-ammonium SL의 휴간 처리 시 약액의 비산에 의한 고추 약해를 방지하기 위해서는 고추 초장이 18 cm 정도로 낮을 경우(정식 20일 후) 약제살포 노즐의 높이를 15 cm 이하로 하여 살포하면 약해는 거의 없었다. 정식 후 40일경에는 고추 초장이 40 cm 이상인 경우 살포 높이를 30 cm 이하로 조절하여 처리하는 것이 약해 가능성이 적은 것으로 나타났다.

Keywords

References

  1. Chang, Y.H., Kim, C.S. and Youn, K.B. 1990. Weed occurrence in upland crop fields of Korea. Kor. J. Weed Sci. 10(4):294-304. (In Korean)
  2. Cho, J.L., Choi, H.S., Lee, Y., Lee, B.M., An, N.H., et al. 2011. Rate of ground cover and weed occurrence in pepper cultivation as affected by seedling of ground cover. Kor. J. Weed Sci. 31(4):355-359. (In Korean) https://doi.org/10.5660/KJWS.2011.31.4.355
  3. KCPA (Korea Crop Protection Association). 2015. User's manual of crop protection product. Seoul, Korea. pp. 1070-1129. (In Korean)
  4. Lee, I.Y., Oh, Y.J., Hong, S.H., Choi, J.K., Heo, S.J., et al. 2015. Weed flora diversity and composition on upland field of Korea. Weed Turf. Sci. 4(3):159-175. (In Korean) https://doi.org/10.5660/WTS.2015.4.3.159
  5. MAFRA (Ministry of Agriculture, Food and Rural Affairs). 2016. Major statistics of agriculture and food. Sejong, Korea. pp. 308-309. (In Korean)
  6. NIAS (National Institute of Agricultural Sciences). 2002. Method of biological trials on crop protection products. Suwon, Korea. pp. 291-345. (In Korean)
  7. Park, J.E., Lee, I.Y., Park, T.S., Lim, S.T., Moon, B.C., et al. 2003. Occurrence characteristics of weed flora in upland field in Korea. Kor. J. Weed Sci. 23(3):277-284. (In Korean)
  8. Pyon, J.Y., Piao, R.Z., Roh, S.W. and Lee, J.J. 1999. Effects of weed competition on growth and yield of red pepper. Kor. J. Weed Sci. 19(2):156-160. (In Korean)
  9. Statistics Korea. 2016. Findings Survey on Rice and Red pepper cultivation area. Daejeon, Korea. pp. 1-3. (In Korea)
  10. Won, J.G., Jang, K.S., Hwang, J.E., Kwon, O.H., Jeon, S.G., et al. 2011. Competitiveness and yield loss of red pepper by Densities of Echinochloa crus-galli (L.) P. Beauv. and Chenopodium album L. Kor. J. Weed Sci. 31(1):71-77. (In Korean) https://doi.org/10.5660/KJWS.2011.31.1.071
  11. Won, J.G., Jang, K.S., Hwang, J.E., Kwon, O.H., Kwon, T.Y., et al. 2012. Yield response of red pepper by densities of D. ciliaris and A. patulus in Eco-friendly cultivated field. Weed Turf. Sci. 1(4):38-43. (In Korean) https://doi.org/10.5660/WTS.2012.1.4.038