Effects of Germination Condition, Nursery Media and Nutrient Concentration on Seedling Growth Characteristics of Pak-choi and Lettuce in Plant Factory
2011
Choi, H.G., Protected Horticulture Research Station, National Institute of Horticultural and Herbal Science, RDA, Busan, Republic of Korea | Kwon, J.K., Protected Horticulture Research Station, National Institute of Horticultural and Herbal Science, RDA, Busan, Republic of Korea | Park, K.S., Protected Horticulture Research Station, National Institute of Horticultural and Herbal Science, RDA, Busan, Republic of Korea | Kang, Y.I., Protected Horticulture Research Station, National Institute of Horticultural and Herbal Science, RDA, Busan, Republic of Korea | Cho, M.W., Protected Horticulture Research Station, National Institute of Horticultural and Herbal Science, RDA, Busan, Republic of Korea | Rho, I.R., Protected Horticulture Research Station, National Institute of Horticultural and Herbal Science, RDA, Busan, Republic of Korea | Kang, N.J., Gyeongsang National University, Jinju, Republic of Korea
This experiment was conducted to study the effects of germination condition, nursery media and nutrient concentration in plant factory on the growth characteristics of pak-choi and lettuce seedlings. The results showed that temperature (15, 20, 25℃) and light conditions (lighting and no lighting) had no significant effect on germination rate of pak-choi and lettuce, whereas the interaction of growing media (rockwool and urethane sponge) and moisture management before and after sowing had significant effect on germination percentage. In case of no moisture management before and after sowing, germination percentage was much higher in rockwool medium than urethane sponge medium. But germination percentage of urethane sponge was higher than that of rockwool with applying moisture before and after sowing. At the nutrient concentration of EC 1.0 dSㆍm-¹ the fresh weight of pak-choi was heavier than in EC 1.5 and 0.5 dSㆍm-¹ by 1.8 and 6.0 times, respectively. At the nutrient concentration of EC 1.0 dSㆍm-¹ the fresh weight of lettuce was also heavier than in EC 1.5 and 0.5 dSㆍm-¹ by 1.7 and 3.5 times, respectively.
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