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| Authors: | J.V. Morgan, A.T. Moustafa, F. Scanlan, A. Tan |
Abstract:
In a series of experiments investigating propagation techniques for plants to be grown-on in hydroponics the following facts emerged.
- With chrysanthemum and lettuce, especially, best growth rates were obtained where the plants were propagated directly in the nutrient solution in the absence of any solid medium.
- Where solid media were used dry matter accumulation was highest in tomato and lettuce where the containers were placed in shallow recirculating solutions rather than on capillary matting.
- With lettuce a static solution was not inferior to a recirculating one, but chrysanthemums responded to recirculation and additional aeration.
- The most satisfactory solution specific conductivity for tomato, lettuce and chrysanthemum was ca. 1000 micromhos.
- Root initiation and development in chrysanthemum was most rapid at a solution temperature of 26.7°C and was further enhanced at lower air temperatures (15.6°C).
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