Effect ofsalinity and light intensity on growing and chemical compition of some lawns / Mohamed Abdullah Mohamed Salem ; Supervised Elsaady Mohamed Badawy , Mohamed Abdelkhalek Elkhateeb

Thesis (M.Sc.) - Cairo University - Faculty of Agriculture - Department of Ornamental Horticulture

This study was conducted at the experimental Nursery of the Ornamental Horticulture Department, Fac., of Agric., Cairo Univ., during the warm season of 2015-2016 and 2016-2017, to evaluate the response of bermuda grass grown in different types of soil [clay, sand or clay + sand (1:1, v/v)], to salinized irrigation water, containing NaCl and CaCl₂ (l:1, w/w)at 0, 2000, 4000, 6000 , 8000 and 10000 ppm. The results showed that, growing bermuda in clay soil, gave the tallest grass and markedly increased the formation of shoots, regardless salinity treatments. The mixture of sand and clay medium gave the highest value of shoot formation, in the third cut. Also, clay or sand alone gave the heaviest FW of clippings in the first and second cuts (harvests), respectively. Growing bermuda in sand or sand + clay resulted the highest turf density, which increases turf quality. There was no significant difference in root length between media, but sand followed by sand + clay ( in some cases) produced the longest roots. The color of bermuda grass markedly increased in clay or its mixture with sand. The contents of total carbohydrates, Na, Ca as well as Cl increased in plants grown in the mixture of sand + clay. On the other hand, irrigating plants, regardless media, with 2000 and 4000 ppm salinized water increased the formation of shoots. In the second season, saline water up to 6000 ppm in comparison had no significant effect on dry weight to the control

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