Effect of temperature on tipburn and boron deficiency in chervil
2001
Kleemann, M. (Estonian Agricultural Univ., Tartu (Estonia))
The first objective here was to show that DIF could be used to control the height of chervil plants. The other aim of the experiments was to assess the effect of DIF on the level of tipburn on chervil. Another aim of present investigation was to assess the effect of DIF on the chemical composition of chervil plants. The plants were grown in growth chambers with different temperature regimes: 1. negative DIF (-5 deg C)- temperature was set to +-1 deg Cduring night; 2. positive DIF (+5 deg C)- temperature was set to 23 +- deg C during day and 18 +- 1 deg C during night. Highest fresh weight was obtained under negative DIF. The plants grown under negative DIF were smaller and less elongated than plants grown under positive DIF. The incidence of tipburned leaves, and the numbers of leaves with boron deficiency symptoms were highest under positive DIF. The content of dry matter was higher in the positive DIF conditions. The content of calcium in young leaves was significantly lower under positive DIF
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