관비재배에서 급액농도가 착색단고추의 생육과 품질에 미치는 영향
2004
Objective of this research was to investigate the effect of irrigation concentration on the growth and fruit quality of sweet pepper(Capsicum annuum L.) in fertigation. The sweet pepper was grown for 210 days with irrigation concentration of EC 0.5, 1.0, 1.5, 2.0, and 3.0 dSㆍm¹ in fertigation nutrient solution developed by European Vegetable R&D Center, Belgium. The net CO₂ assimilation and transpiration rate were the highest in the treatment of 2.0 dSㆍm¹. The pH in the soil was range of 5.63 - 6.03, the EC increased as the irrigation concentration was getting higher. The SPAD value also increased as the irrigation concentration was getting higher, N, P, K, Mg except Ca were highest in the treatment of EC 2.0 dSㆍm¹. The growth was good in the treatment of EC 2.0 dSㆍm¹. The fruit length, width, firmness, and pericarp thickness had no statistical differences among treatments, the fruit fresh weight and dry weight were good in the treatment of EC 2.0 dSㆍm¹, the yield was good in the treatment of EC 1.5 dSㆍm¹ and EC 2.0 dSㆍm¹. The sugar contents was the highest in the treatment of EC 2.0 dSㆍm¹ with 9.0°Brix. In conclusion, the optimal irrigation concentration for sweet pepper fertigation was EC 2.0 dSㆍm¹.
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