Dry Matter Yield and Nutrients Uptake of Sorghum×Sudangrass Hybrid Grown with Different Rates of Livestock Manure Compost

서지정보

· 발행기관 : 한국토양비료학회
· 수록지 정보 : 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer) / 43권 / 4호 / 458 ~ 465페이지
· 저자명 : 임상선, 이상모, 최우정, 이승헌

초록

To investigate the growth and nutrient uptake response of sorghum×sudangrass (S×S) hybrid to different rate of livestock manure compost, a field experiment was conducted in the experimental grassland of Chonnam National University. Six treatments were laid out in a randomized block design with triplicates; control (no input), synthetic fertilizer (20 g N m-² and 20 g P₂O₅ m-²), compost 1 (3.4 g N m-² and 3.6 g P₂O₅ m-²), compost 2 (6.8 g N m-2 and 7.2 g P2O5 m-2), compost 4 (13.4 g N m-2 and 14.4 g P2O5 m-2), and compost 6 (20.2 g N m-2 and 21.6 g P2O5 m-2). Ninety days after treatment, above-ground parts of the plants were harvested and measured for dry matter yield (DMY) and amounts of nutrients (N and P) uptake. Synthetic fertilizer application achieved the greatest DMY (2.4 kg m-2) and nutrient uptake (38.3 g N m-2 and 15.3 g P2O5 m-2). Increasing compost application rate tended to enhance DMY accumulation and nutrient uptake (P<0.01), but DMYs of compost 4 (1.9 kg m-2) and 6 (1.8 kg m-2) treatments were not different. Therefore, it was suggested that application compost alone may not achieve DMY of S×S hybrid compatible to synthetic fertilizer application. As nutrient uptake efficiency data showed that availability of compost P could be better than SF, it might be a strategy to apply compost as P source with supplementary N application such as liquid manure, SF or green manure if necessary considering availabilityof N input and the yield goals.

참고자료

· 없음