Articles

DAILY WATER UPTAKE OF A TOMATO CROP GROWN BY NFT UNDER SEMI ARID CONDITIONS AS AFFECTED BY SOLAR RADIATION AND OTHER ENVIRONMENTAL FACTORS

Article number
537_26
Pages
249 – 252
Language
Abstract
Simple and precise method was used for measuring water uptake rates of tomato (Lycopersicon esculentum Mill.) plants grown by Nutrient Film Technique (NFT) in greenhouse condition.
To optimise the irrigation, it is necessary to save water and fertilisers.
It is also important to decrease the pollution of over fertilisation in protected productions.
It is known that a relative proportion of water is strongly correlated with the solar radiation and another environmental parameters.
Water uptake rates were different and showed three phases throughout the total daily uptake: two of them during the day (before and after midday) and another one at night.
These results suggest that we must do a similar number of fertigation phases where each one has a different correlation between total solar radiation and water uptake.
In practice, it is possible to suggest some recommendations of fertigation versus of a similar radiation for these different phases during the day.

Publication
Authors
M.C. Salas, M. Urrestarazu, D. Valera
Keywords
Tomato, day-period water uptake rate, soilless, cycle crop
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