벼 수확전 청보리 파종 재배시 친환경적 뚝새풀 관리

Eco-Friendly Control of Water Foxtail (Alopecurus aequalis) on Cultivation Fields of Forage Barley Sowed before Rice Harvest

  • ABSTRACT

    본 연구는 벼 수확 전에 사료맥류를 파종 재배할 경우 뚝새풀의 친환경적 방제 가능성을 검토하고자 수행되었다. 해수를 뚝새풀 발생전, 1엽 그리고 2엽기에 30, 50, 100% 농도로 처리한 결과, 뚝새풀은 1엽기에 100% 처리에서 50% 정도 억제되었다. 또한 무기염류 처리에 의한 보리생육과 뚝새풀의 방제효과를 검토한 결과 보리의 출현율은 sodium chloride 처리에서는 영향이 없으나, ferrous sulfate의 처리에서는 35~50% 정도 낮았으며, 뚝새풀은 sodium chloride 처리에서 36~44%, ferrous sulfate의 처리에서 47.5~78.8% 정도 억제되었다. 작물 파종량 증가에 의한 뚝새풀의 발생억제 효과를 검토한 결과, 보리의 파종량이 많을수록 입모수가 많고, 뚝새풀의 발생량은 유의적으로 낮았으며, 조사료 수량은 300kg ha−1파종에서 가장 높았다. 결과적으로 벼 수확전 입모중 사료맥류 재배시 뚝새풀의 친환경적인 방제는 50% 정도의 수준은 가능한 것으로 판단되었다.


    This study was conducted to develop an eco-friendly control method for water foxtail in the field sowing barley seeds before rice harvesting. When sea water was applied pre-emergent, 1 and 2 leaves, little injury was observed on barley. Percent of water foxtail control with sea water (100%) was more than 50% at 1 leaf application timing. When sodium chloride was applied 400, 800 and 1,600kg ha−1, little injury was observed on barley. Percent of water foxtail control with sodium chloride was 36-44% at 30 days after sowing. When ferrous sulfate was applied at 400, 800 and 1,600kg ha−1, emergent injury was observed 35-50% on barley. Percent of water foxtail control with ferrous sulfate was 48-79% at 30 days after sowing. When barley was sowed at 200, 300 and 400kg ha−1, seeding rate standing plants have many of the more crops, water foxtail occurrence was low. And, Forage yield of 300 kg ha-1 seeding in the highest. Based on the results, it is possible to control water foxtail in the field sowing barley seeds before rice harvesting more than 50%.

  • KEYWORD

    뚝새풀 , 무기염류 , 청보리 , 친환경

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  • [Fig. 1.] Mean daily air temperature for maximum, minimum, average and total daily rainfall from October to November, 2012.
    Mean daily air temperature for maximum, minimum, average and total daily rainfall from October to November, 2012.
  • [Fig. 2.] Effects for emergence of barley according to the application concentration of sea water. Sea water was applied foliar on pre-emergence of barley. Data collection was on Oct. 20, 2012. Means with the same letters within the bars are not significantly different at p = 0.05 level in DMRT test.
    Effects for emergence of barley according to the application concentration of sea water. Sea water was applied foliar on pre-emergence of barley. Data collection was on Oct. 20, 2012. Means with the same letters within the bars are not significantly different at p = 0.05 level in DMRT test.
  • [Fig. 3.] Weeding efficacy according the dilution concentration of sea water on growth stage of water foxtail.Data collection was on Nov. 19, 2012. Error bars indicated standard deviation and different letters indicate significant different at p = 0.05 level according to DMRT test.
    Weeding efficacy according the dilution concentration of sea water on growth stage of water foxtail.Data collection was on Nov. 19, 2012. Error bars indicated standard deviation and different letters indicate significant different at p = 0.05 level according to DMRT test.
  • [Fig. 4.] Effects for emergence of barley according the application rate of sodium chloride and ferrous sulfate application. Sodium chloride and ferrous sulfate was applied on 5 days before sowing of barley (Apr. 13). Data collection was on Oct. 20, 2012. Means with the same letters over the bars are not significantly different at p = 0.05 level in DMRT test.
    Effects for emergence of barley according the application rate of sodium chloride and ferrous sulfate application. Sodium chloride and ferrous sulfate was applied on 5 days before sowing of barley (Apr. 13). Data collection was on Oct. 20, 2012. Means with the same letters over the bars are not significantly different at p = 0.05 level in DMRT test.
  • [Table 1.] Growth of barley according to application rate of sodium chloride and ferrous sulfate.
    Growth of barley according to application rate of sodium chloride and ferrous sulfate.
  • [Fig. 5.] Weeding efficacy according to application rate of sodium chloride and ferrous sulfate. Data collection was on Nov. 19, 2012. Error bars indicated standard deviation and means with the same letters within the bars are not significantly different at p = 0.05 level in DMRT test.
    Weeding efficacy according to application rate of sodium chloride and ferrous sulfate. Data collection was on Nov. 19, 2012. Error bars indicated standard deviation and means with the same letters within the bars are not significantly different at p = 0.05 level in DMRT test.
  • [Fig. 6.] Standing plants of crop according to seeding rate on cultivation fields of forage barley sowed before rice harvest. Data collection was on Nov. 7, 2012. Means with the same letters over the bars are not significantly different at p = 0.05 level in DMRT test.
    Standing plants of crop according to seeding rate on cultivation fields of forage barley sowed before rice harvest. Data collection was on Nov. 7, 2012. Means with the same letters over the bars are not significantly different at p = 0.05 level in DMRT test.
  • [Fig. 7.] Water foxtail according to seeding rate in cultivation fields of forage barley sowed before rice harvest. Data collection was on Apl. 1, 2013. Means with the same letters within the bars are not significantly different at p = 0.05 level in DMRT test.
    Water foxtail according to seeding rate in cultivation fields of forage barley sowed before rice harvest. Data collection was on Apl. 1, 2013. Means with the same letters within the bars are not significantly different at p = 0.05 level in DMRT test.
  • [Table 2.] Yield of forage according to seeding rate in the field sowing barley seeds before rice harvesting.
    Yield of forage according to seeding rate in the field sowing barley seeds before rice harvesting.