한국유기농업학회지 (Korean Journal of Organic Agriculture)
- 제14권1호
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- Pages.69-83
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- 2006
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- 1229-3571(pISSN)
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- 2287-819X(eISSN)
유휴 논토양에서 가축분뇨의 시용이 Tall fescue의 잠재생산성에 미치는 영향
The Effect of Application of Cattle Slurry on Dry Matter Yield and Feed Values of Tall Fescue(Festuca arundinacea Schreb.) in Uncultivated Rice Paddy
초록
본 실험은 유휴 논토양에 톨페스큐를 재배하였을 때, 액상구비를 물로 희석하거나 희석하지 않고 시기를 다르게 시용하여 계절별 및 연간 건물수량과 사료가치를 조사하고 화학비료 시비에 따른 건물수량과 사료가치도 비교하여 액상구비의 적정 시용 시기와 희석수준을 결정하고자 실시되었으며, 그 결과를 요약하면 다음과 같다. 1. 액상구비를 물로 희석하거나 희석하지 않고 시용하였을 때 연간 건물수량이 ha당 각각
This experiment was conducted to investigate effects of application of diluted and undiluted cattle slurry with water on seasonal and annual dry matter yields and feed values of tall fescue in the uncultivated rice paddy and it was compared with chemical fertilizer. Annual dry matter yields for diluted (average 6.43 ton DM/ha) and undiluted (average 6.56 ton DM/ha) cattle slurry were significantly higher (p<0.05) than those of no fertilizer (3.82 ton DM/ha). This trend was much more conspicuous in treatments applied in spring. In chemical fertilizer treatments, fertilizers with P and K (6.12 ton DM/ha), and P, K and N (10.13 ton DM/ha) had significantly (p<0.05) higher dry matter yields compared with no fertilizer. However, annual dry matter yields for treatments of P and K mixture tended to be lower than those of cattle slurry applications. The efficiency of DM production for inorganic nitrogen in chemical fertilizers annually averaged 26.7kg DM/kg N. In terms of cutting frequencies, it was highest in 2nd growth followed by 1st and 3rd growth. On the other hand, efficiencies of annual DM production of nitrogen for diluted and undiluted cattle slurry were 18.3 and 17.4 kg DM/kg N, respectively, especially, highest in 2nd growth. While, efficiencies of DM production for cattle slurry versus for inorganic nitrogen were 68.5 (undiluted) and 65.2% (diluted), respectively. For annual crude protein contents of tall fescue, no fertilization (11.5%) was significantly higher than chemical fertilizer, but that was lower than cattle slurry (
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