Effect of KCI or K₂SO₄ Supplement to Nutrient Solution on Yield and Fruit Quality in Sweet Peppers (Capsicum annuum 'Special' and 'Fiesta')
2006
An, C.G. (Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea) | Hwang, H.J. (Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea) | Hwang, Y.H. (Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea) | Yoon, H.S. (Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea) | Shon, G.M. (Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea) | Song, G.W. (Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea) | Jeong, B.R. (Gyeongsang National University, Jinju, Republic of Korea)
This study was carried out to reduce fruits with uneven-coloration, which is a main attribute to low quality fruits in sweet pepper. To improve fruit coloration, 1, 2, or 4 mM KCl or 2 mM K₂SO₄ were supplied to the nutrient solution, and plant growth and fruit quality were compared with those in the control, the Grodan standard nutrient solution treatment. Levels of N, Ca, and Mg in leaves decreased, while K and Cl increased, as compared to those of the control. With the promoted uptake of K and Cl as well as the suppressed uptake of N by the KCl or K₂SO₄ supplement to the solution, fruit content of capsanthin and hunter value of fruit color increased, while chlorophyll content decreased, as compared to the control.
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