The General Commission for Scientific Agricultural Research

Damascus, United States

The General Commission for Scientific Agricultural Research

Damascus, United States
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Babilie R.,Damascus University | Jbour M.,The General Commission for Scientific Agricultural Research | Trabi B.A.,Damascus University
International Journal of ChemTech Research | Year: 2015

The experiment was carried out during 2013/2014 growing season at an agricultural nursery next to the faculty of agriculture of Damascus University. The objective was to study the effect of foliar spraying with different concentrations of Licorice roots and seaweed extracts (5, 10 and 15 g/l) on growth and seed production of the local red onion variety (var. Baladi) compared to control plants treated with distilled water. A total of 4 times of spraying took place every two weeks during the season starting at the stage of 3-4 true leaves until the commencement of bolting. Each treatment consisted of 4 replications and 15 plants/rep. All treatments significantly increased plant height, length of the tallest leaf and number of leaves to reach the highest values of 15 g/l licorice root extracts treatment 67.7 cm, 52.02 cm and 25.5 leaf/plant compared to control plants (43.4 cm, 40.0 cm and 15.8 leaf/plant, respectively). Studied flowering indicators showed significant effect of most spray treatments. For instance, the rate of flower set in control plants (62.67%) significantly increased to reach a range of 70.22% - 84.92%. This is positively affected seed production parameters. Foliar spray with licoriceroot extract (15 g/l) were significantly the best treatment in most studied indicators. Its average seed production reached (43.64 g/plant,436.4 g/m2), and the germination percentage (100%)compared to the control (22.65 g/plant, 226.5 g/m2, 81.67%, respectively), Plant extract could potentially provide a safe alternative to chemical fertilizers and plant regulators. © 2015, Sphinx Knowledge House. All rights reserved.


Yaghi T.,The General Commission for Scientific Agricultural Research | Arslan A.,The General Commission for Scientific Agricultural Research | Naoum F.,University of Aleppo
Agricultural Water Management | Year: 2013

To study the effect of two types of plastic mulch (transparent and black) with drip irrigation on water requirement and Cucumber (Cucumis sativus, L.) yield, in addition to their effect on Maturity time. Trials were carried out at Teezen Research Station, Hama Agricultural Research Center, GCSAR, Syria, during 2009-2010 growing seasons using complete randomized block design with three replicates. Soil characteristics were followed too because they reflect the effects of plastic mulch. Treatments were transparent mulched drip irrigation (DI+TM), black mulched drip irrigation (DI+BM), drip irrigation without mulching (DI) and surface furrow irrigation (SI). The results of the study indicated that (DI+TM) treatment excelled all other treatments at yield and water use efficiency (WUE), where its yield was 63.9tha?1, and (WUE) was 0.262tha?1mm?1, while (DI+BM) treatment produced 57.9tha?1, with a (WUE) of 0.238tha?1mm?1. However cucumber yield and WUE declined in the remaining treatments of no mulch (DI) and (SI) to reach 44.1tha?1 with 0.153tha?1mm?1 and 37.7tha?1 with 0.056tha?1mm?1, respectively. The results showed that (DI+TM) treatment gave the highest soil temperature and moisture during both of the seasons in comparison to (DI+BM). This enhanced its vegetative growth and almost doubled its productivity compared to the SI treatment. © 2013 The Authors.

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