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http://dx.doi.org/10.12791/KSBEC.2014.23.4.364

Graft-take and Growth of Grafted Pepper Transplants Influenced by the Nutrient and Irrigation Management of Scion and Rootstock before Grafting  

Jang, Yoonah (Vegetable Research Division, National Institute of Horticultural and Herbal Science, RDA)
Mun, Boheum (Research Coordination Division, Rural Development Administration)
Choi, Chang Sun (Vegetable Research Division, National Institute of Horticultural and Herbal Science, RDA)
Um, Yeongcheol (Vegetable Research Division, National Institute of Horticultural and Herbal Science, RDA)
Lee, Sang Gyu (Vegetable Research Division, National Institute of Horticultural and Herbal Science, RDA)
Publication Information
Journal of Bio-Environment Control / v.23, no.4, 2014 , pp. 364-370 More about this Journal
Abstract
The nutrient and irrigation management of scion and rootstock can alleviate stress on grafted transplants after grafting and promote the growth. This study investigated the effects of nutrient and irrigation management of scion and rootstock on the graft-take and growth of grafted pepper transplants. Before grafting, the scions were subjected to different water potential regimes in media by controlling the irrigation frequency and time. The scions were subirrigated 0, 1(two days before grafting), 1(one days before grafting) or 2 times for five days before grafting. The irrigation frequency and time influenced the water potential of media and the growth of scion and grafted transplants. At 13 days after grafting, fresh and dry weight of transplants which were irrigated once at two days before grafting were greater by 29 and 34% than those without irrigation during five days before grafting. This suggests that mild water stress on scion prior to grafting by controlling water management alleviate water stress on grafted transplants after grafting and improve the growth. Before grafting, the rootstocks were subjected to different nutrient regimes by controlling nutrient solution application. The rootstocks were supplied with nutrient solution 0, 1, 2, or 4 times. The nutrient application frequency and time influenced the electrical conductivity (EC) and pH of media. Accordingly, the growth and mineral contents of rootstock and grafted transplants were also affected. At 13 days after grafting, fresh and dry weight of transplants with four times of nutrient application increased by 30 and 20%, respectively, than those without nutrient solution supply during seven days before grafting. Therefore, it is recommended that nutrient solution be supplied more than four times during seven days before grafting for the production of high quality transplants.
Keywords
electrical conductivity (EC); irrigation; nutrient solution; water potential; water stress;
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Times Cited By KSCI : 3  (Citation Analysis)
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