|Author: ||A.A. Almasoum|
|Keywords: ||Tomato, Lycopersicon esculenetum, transplant, depth, irrigation, yield, quality.|
Root growth, development and architecture are important aspects of seedling growth.
Stresses that reduces root growth may affect plant growth by reducing the volume and extent of soil exploration.
Supply of water and nutrients to the shoot may be reduced if root growth is subjected to stress.
In order to study the contribution of root depth on tomato growth, productivity and fruit characteristics using drip irrigation.an experiment was carried out under field conditions in the United Arab Emirates.
Tomato (Lycopersicon esculenetum Mill.) cv 'Petopride' and 'Luxor' were grown during 1996/1997 using drip irrigation (ECw2.5dcm-1). Three transplant depths were used according to morphological positions on the plant: the first depth was to the root ball, the second was to the cotyledon leaves and the third was to the first true leaves.
Results revealed that deeper planting (first true leaves) outperformed other depths in earliness of flowering by two days, in addition to significant increase of marketable fruits for both cultivars.
Early yield of cv Petopride, harvested after 53 days from transplanting gave, 2.6 ton/ha for first true leaves followed by 2.2 and 2.1 for cotyledon leaves and root ball respectively.
Similar trends were found for Luxor, which gave 1.0; 0.9 and 0.6 ton/ha fruit yield for the three methods respectively.
Fruit volume also had similar trend.
Other parameters such as TSS, acid and fruit diameter did not show a significant change .The effect of planting depth was diminished with successive harvests.
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