Alleviation of the incidence of internal tipburn in Chinese cabbage by subsurface drip fertigation
Description
[Synopsis]
The potential of subsurface drip fertigation in reducing the incidence of internal tipburn in Chinese cabbage (Brassica pekinensis Rupr.) was evaluated against conventional fertilization. In fertigation plots, nutrient solutions were applied weekly at a rate of 5 g N m-2 through subsurface drip system for eight consecutive weeks. In the control plots, a compound fertilizer containing crotonylidene diurea was applied at a rate of 25 g N m-2 before transplanting. Fertigation significantly reduced the tipburn incidence in all the five cultivars tested without any adverse effect on the yield. Among the five cultivars, Yuki in the fertigation plots expressed almost the complete tolerance to the tipburn incidence. Alleviation of the tipburn incidence was closely related to the level of total N and Ca/TN ratio in the inner leaves.
- Affiliation
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Japan International Research Center for Agricultural Sciences Okinawa Subtropical Station
- Classification
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Technical A
- Term of research
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FY2000 (FY1996-2000)
- Responsible researcher
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SUGAHARA Kazuo ( Okinawa Subtropical Station )
MASUDA Taizo ( Okinawa Subtropical Station )
HERNANDEZ Lauro G. ( Okinawa Subtropical Station )
BANZAI Kenji ( Okinawa Subtropical Station )
OHWAKI Yoshinari ( Okinawa Subtropical Station )
- ほか
- Japanese PDF
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2000_25_A3_ja.pdf961.56 KB