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- 저자 : Chiwon W. Lee(이치원) (검색결과 2 건)
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비료의 조성 및 농도가 영양생장 중인 ‘매향’ 딸기의 생장, 양분흡수 및 근권환경 변화에 미치는 영향
장현호(Hyun Ho Jang),이희수(Hee Su Lee),이치원(Chiwon W. Lee),최종명(Jong Myung Choi) 한국원예학회 2014 원예과학기술지 Vol.32 No.4
We quantified the effects of the composition and concentration of fertilizer solutions on the growth and nutrient uptake of ‘Maehyang’ strawberry at the vegetative growth stage. Acid fertilizer (AF), neutral fertilizer (NF), and basic fertilizer (BF) with concentrations of 100 or 200 ㎎·L<SUP>-1</SUP> based on N, were formulated and applied during the 100 days after transplanting, at which point crop growth and tissue nutrient contents were analyzed. The soil solutions were sampled every two weeks to measure the pH, EC and nutrient concentrations. BF was a more effective fertilizer compared to AF and NF for growth of ‘Maehyang’ strawberry when fertilizer concentrations were controlled to 100 ㎎·L<SUP>-1</SUP>. By contrast, the fresh and dry weights were greatest in the NF treatment when fertilizer concentrations were controlled to 200 ㎎·L<SUP>-1</SUP>. The tissue contents of N, P, and Na were 2.20, 0.51 and 0.10%, respectively, in the NF 200 treatment, and these were the highest among all treatments tested. The highest contents of K, Ca and Mg were 2.60% in AF 200, 0.95% in BF 200 and 0.45% in BF 100, respectively. During the fertilization period, the highest and lowest pHs were 6.13 in BF 100 and 4.92 in AF 200. The lowest EC was 1.376 dS·m<SUP>-1</SUP> in BF 100 and the highest was 4.936 dS·m<SUP>-1</SUP> in NF 200 treatments. The highest NH₄? concentrations in the soil solution occurred during the AF 200 treatment, followed by those with NF 200 and AF 100. When fertilizer concentrations were equal, AF treatment gave rise to the highest Ca<SUP>+2</SUP>and Mg<SUP>+2</SUP> concentrations, followed by NF and BF, until day 84 of fertilization. The BF treatments had the highest NO₃? concentrations followed by NF and AF. The trends for PO₄<SUP>-3</SUP> concentrations were similar in all fertilizer treatments when the fertilizer concentrations were equal. The above results indicate that neutral and basic fertilizers were most effective to promote ‘Maehyang’ strawberry growth when fertilizer solutions were controlled to low or high concentrations, respectively. These findings are useful for planning fertilization programs for vegetative propagation of ‘Maehyang’ strawberry.
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