Abstract
본 시험은 유기조사료 생산에 적합한 동 하계 사료작물을 선정하고, 이를 통한 지역별 유기조사료 생산을 위한 적정 작부체계를 선발하기 위하여 수행되었다. 관행재배 조건과 유기재배 조건에서의 사료작물별 생육특성의 차이는 하계사료작물에서 현저하게 나타났다. 즉 사료용 옥수수는 잡초 발생으로 생육이 억제되어 관행재배에 비해 현저한 수량감소를 나타낸 반면 수수<TEX>$\times$</TEX>수단그라스 교잡종은 잡초 발생이 없어 관행 옥수수 대비 높은 수량을 나타내었다. 동계사료작물은 관행재배와 유기재배에 의한 차이는 크지 않았으나, 생산성 측면에서 이탈리안 라이그라스 보다 호밀이 우수하였다. 따라서 작부체계에 영향을 미치는 요인이 하계 사료작물에서는 잡초의 발생여부, 동계사료작물에서는 사료작물의 종류에 기인됨이 밝혀졌다. 이를 종합적으로 고려한 중부지역에서 유기조사료 생산을 위한 최적 작부체계는 중부지역에서는 수수<TEX>$\times$</TEX>수단그라스와 호밀이라 할 수 있다. This experiment was conducted to investigate the selection of regional double cropping system for production of organic forage in middle part of Korea. The species of forage crop used in this experiment were corn, <TEX>$sorghum\;{\times}\;sudangrass$</TEX> hybrid and japanese millet for summer crops and rye and Italian ryegrass for winter crops. <TEX>$Sorghum\;{\times}\;sudangrass$</TEX> hybrid showed higher DM (dry matter) and TDN (total digestible nutrient) yield than that of corn. Dry matter yield of corn decreased to 56% that of control because of weed. In winter crops, DM and TDN yield of rye is higher than that of Italian ryegrass. Rye was more adequate to produce organic forage in middle part of Korea. We could not find out the difference of nutrient value between each treatments. It means that the amount of nutrient is affected by DM productivity of each crop. The result of this study indicated that <TEX>$sorghum{\times}sudangrass$</TEX> hybrid (summer crop) and rye (winter crop) cropping system could be recommended as producing high yield of organic forage in middle part of Korea.
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More From: Journal of The Korean Society of Grassland and Forage Science
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