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EFFECT OF CULTIVAR, SOWING DATE AND PLASTIC COVER SORT ON THE RESIST OF THE VEGETATIVE GROWTH OF TOMATO ( Lycopersicon esculentum Mill ) TO LOW TEMPERATURE | ||
| Basrah Journal of Agricultural Sciences | ||
| Article 6, Volume 20, Issue 1, 2007, Pages 84-104 PDF (0 K) | ||
| DOI: 10.33762/bagrs.2007.56215 | ||
| Authors | ||
| hammed a. k. abdul; Faisal A.R. Al-Refai; Essam H. A. Al-Doghachi | ||
| Abstract | ||
| This study was conducted under desert conditions at Al-Basrah city during the winter season of 2004/2005. The aim of the experiment was to study the influence of low temperature on vegetative growth behaviors of three tomato cultivars.Experiment included (24) treatments resulting from the interaction between three cultivars ( "Douna"," Hatouf" and "Super Marmande"), two sowing dates (1/9 and 1/10) and four sorts of plastic cover ( 1. New plastic G.E.P.I. production 2. Old plastic G.E.P.I. production 3. Yellow plastic Yugoslavia production 4. Commercial plastic Lebanon production). Randomized Complete Block Design was used with three replicates. L.S.D. test was used at probability of 5% to compare mean variations. Results can be summarized as follows: It was found that sowing date of 1/9 gave a significant increase in the damage percentage of vegetative growth comparing with 1/10 as well as plant height and leaves number after 90 and 180 days from sowing and branches number after 180 days, whereas their were not differ at damage intensity. "Super Marmand" cultivar gave a significant increase in both percentage and intensity of damage comparing with " Hatouf" and " Douna" and than "Hatouf". Regarding growth vigor "Douna" "Hatouf" cultivars gave a significant increases in plant height and leaves number after 90 and 180 days from sowing and branches number after 180 days, and "Douna" gave a significant increase in leaves number after 180 day comparing with " Hatouf". Plastic covers, the commercial one gave heights percentage and intensity of damage, than new plastic G.E.P.I , old plastic G.E.P.I lastly the yellow one they were (51.6%, 19.1), (43.0%,15.1), (30.9%, 10.7) and (17.7%, 5.2) respectably. Regarding growth vigor plants sowing under the yellow one gave significant increases in plant height and leaves number after 90 and 180 days, and branching number after 180 days after sowing comparing with other covers. Most interaction between the three factors gave a significant increases in damage percentage as well as plant height | ||
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