The Effects of Paclobutrazol, Calcium and Hydrogen Cyanamide on Growth Cessation and Bud Burst of Apple Grown Under Warm Glasshouse Conditions

Authors

  • Krisana Krisanapook Laboratory of Horticulture, Faculty of Agriculture, Tohoku University, Sendai 981, Japan
  • Yoshie Motomura Laboratory of Horticulture, Faculty of Agriculture, Tohoku University, Sendai 981, Japan
  • Takashi Saito Laboratory of Horticulture, Faculty of Agriculture, Tohoku University, Sendai 981, Japan
  • Ryosuke Ogata Laboratory of Horticulture, Faculty of Agriculture, Tohoku University, Sendai 981, Japan
  • Suranant Subhadrabandhu Department of Horticulture, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.

Abstract

Shoot growth of the Fuji apple cultivar was retarded by spraying with paclobutrazol at 500 ppm, four times during the growing season, Significant difference in the number of flower buds between the treated and the untreated trees were found. Carbohydrate and nitrogen levels in the treated trees was higher than in the untreated ones. Both calcium and hydrogen cyanamide enhanced bud break but hydrogen cyanamide was more effective. Addition of “Merit” ( 7-5-3 ( NPK ) formula fertilizer ) to these chemicals increased induction of bud break under simulated tropical / sub – tropical conditions. Results varied with application time and these results are not fully understood and required further investigation.

Downloads

Published

1990-06-30

How to Cite

Krisana Krisanapook, Yoshie Motomura, Takashi Saito, Ryosuke Ogata, and Suranant Subhadrabandhu. 1990. “The Effects of Paclobutrazol, Calcium and Hydrogen Cyanamide on Growth Cessation and Bud Burst of Apple Grown Under Warm Glasshouse Conditions”. Agriculture and Natural Resources 24 (2). Bangkok, Thailand:218-23. https://li01.tci-thaijo.org/index.php/anres/article/view/242126.

Issue

Vol. 24 No. 2 (1990): April-June

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.