References
- Larson , R. A. 1985 . Growth regulators in floriculture . Hort. Rev. , 7 : 399 – 481 .
- Luckwill , L. C. 1981 . Growth regulators in crop production. London : Arnold publishers .
- Lyons , R. E. and Hale , C. L. 1987 . Comparison of pinching methods on selected species of Columnea, Kalanchoe . Crassula. HortScience , 22 : 72 – 74 .
- Sachs , R. M. , Heild , H. and De Bie , J. 1975 . Dikegulac: a promising new foliar-applied growth regulator for woody species . HortScience , 10 : 367 – 369 .