Growth and Development of 'Gutbier V-10 Amy' Poinsettia (Euphorbia pulcherrima Willd.) as Affected by Application of Waste Nutrient Solution

폐양액 시비에 따른 포인세티아 생육

The objective of this research was to determine the effect of waste nutrient solution (WNS) on growth and development of poinsettia 'Gutbier V-10 Amy'. To achieve this, WNS collected from rose grown in greenhouse was diluted with various times and 500 mL of each solution was applied every week. Then growth characteristics and nutrient uptake were determined at 180 days after transplanting. The treatment of undiluted WNS had highest plant height and length of branch among treatments tested, but there were no statistical differences in the number of bract and branches. Undiluted WNS had higher leaf number, leaf length, leaf width, fresh weight, and dry weight than any other treatments tested. There was also a trend that increased dilution times of WNS resulted in decreased plant growth. Undiluted WNS had higher chlorophyll content than Hyponex treatment, but diameter of crown did not show significant differences among treatments. In the analysis of root media collected at 6 months after fertilization, the treatment of undiluted WNS had higher electrical conductivity and organic matter content than other treatments, but the Hyponex treatment had higher phosphorus concentration than other treatments tested.

장미 양액재배 후 폐기되는 폐양액을 분화 포인세티아에 시비함으로써 경영비 절감과 수질, 토양 등 환경보호에 이바지하고자 수행된 연구 결과는 다음과 같다. 초장 및 분지장은 폐양액 원액 시비시 컸으나 포엽수 및 분지수는 폐양액 시비구가 대조구에 비해 차이가 없었다. 폐양액 원액 시비시 엽수가 많고 엽폭 및 엽장이 길고 생체중과 건물중도 4종복비 시비구에 비해 무거웠으며 엽록소 함량 또한 높게 나타났으나 경경은 유의성이 없었다. 관수 6개월 후 토양 EC 및 유기물 농도는 폐양액원액 시비구에서, 인산은 4종복비 시비구에서 높게 나타났다. 식물체 무기성분 농도 또한엽, 줄기, 뿌리 등 식물체 부위에 관계없이 폐양액원액 시비구에서 높게 나타났다.