ISHS Acta Horticulturae 148: III International Symposium on Energy in Protected Cultivation
SELECTING GREENHOUSE NIGHT TEMPERATURES FOR TOMATO SEEDLINGS |
| Authors: | I. Seginer, M. Raviv |
| Abstract:
A method is described, which can be used to estimate the most economical night-time greenhouse temperature for a particular crop. The method requires growth data, engineering data and economic data to produce a solution. An example is presented to illustrate the method: Growth-chamber data for tomato seedlings are used to obtain the sensitivity of that crop to deviations from the physiologically optimal night temperature. The available data seem to indicate that a 12 K deviation from the optimum results in a yield decrease of 20%. The recommended night temperature in the example is about half-way between the physiological optimum and the outside temperature. | |
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