돈분퇴비 시용이 산국의 질소흡수 및 수량과 유효성분에 미치는 영향
Effects of pig manure application on nitrogen uptake, yield and active components of chrysanthemum boreale M.
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Abstract
To develop an efficient cultivation system to increase the productivity and the high quality of Chrysanthemum boreale M., the effects of pig manure (PM) application on the yield and the effective component were investigated in the pot scale (1/2000a scale). PM applied at the equivalent of six rates (with rate of 0, 2000, 4000, 6000, 8000, and 12000㎏ 10a-¹). Maximum plant biomass yield was achieved at 9510㎏ 10a-¹and at 9940㎏ 10a-¹for flower biomass. Nitrogen recovery efficiency was more than 42% for all nitrogen treatments and reached 66.6% at 4000㎏ 10a-¹. Proline (7.4~9.2g ㎏-¹) was the most abundant amino acid in the flower of C. boreale M. and the contents of amino acids increased with increasing PM application rate. Content of cumambrin A ,a sesquiterpene compound known to reduce blood-pressure, decreased with increasing PM application. The highly negative correlation was found (R²= -0.723, P<0.01) between content of cumambrin A and PM application. However, the amount of cumambrin A in flowers increased as PM rate increased, because of increasing flower yield. In conclusion, PM fertilization increases yields and enhances overall quality.