Abstract
To produce turnip rape (Brassica napus L.) with high concentrations of total calcium (Ca) and water-soluble Ca, we investigated the effect of defoliation on the form and levels of Ca (water-, 1N-NaCl-, 2%CH3COOH- and 5%HCl-soluble Ca) in the lateral shoots of turnip rape.
By defoliation after pinching in November, the elongation of lateral shoots was inhibited and the yield of lateral shoots was reduced to 84~91% of the control without defoliation. Defoliation significantly increased total and water-soluble Ca concentrations in lateral shoots of turnip rape from November to December, but not those after January.
