الفهرس 
ACKNOWLEDGEMENTSOnly 14 pages are availabe for public view
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Abstract
This study was carried out at the nursery of ‘American University in Cairo’ located at New Cairo-Fifth District/Settlement, Cairo Governorate, Egypt. During the two successive seasons of 2014 and 2015 (from July-1st to November-15th of every season), the objective of the study was to investigate the effect of culture media and different irrigation rates and their interactions on the vegetative growth and chemical composition of Seashore Paspalum grass. In this study, four different type of culture media were used in these experiment, as follows: First soil mixture (M1), it contains 75% sand + 20% clay + 5% compost. Second soil mixture (M2), it contains 50% sand + 40% clay + 10% compost. Third soil mixture (M3), it contains 25% sand + 60% clay + 15% compost. Fourth soil mixture (M4), it contains zero% sand + 100% clay + zero% compost. In addition different irrigation treatments were initiated with daily irrigation at the rate of 3, 5, or 7 liters/m2/day during the period from 1st July to 1st October, then the irrigation rates were reduced to 3, 5, or 7 litres /m2/ three days in week till the termination of the experiment on 15thNovember 2014 and 2015 (in two seasons, respectively). The most important results can be summarized as follows: Vegetative growth characters: Plant height: 1-The plants grown in culture media M2 containing 50% sand + 40% clay + 10% compost produced the tallest plants in the first and second seasons. 2- The results showed that the plants irrigated with the highest water level (7 liters/m2/day from July to 1st October, then 7 liters/m2/ three days from 1stSUMMARY October till the mid-November) produced the tallest plants in the first and second seasons. 3- The plants grown in culture media M2 containing 50% sand + 40% clay + 10% compost and irrigated with highest water level (7 liters/m2/day from July to 1st October, then 7 liters/m2/ three days from 1st October till the mid-November) gave the tallest plants in both seasons. Fresh weight of clippings (g/ m2): 1- The plants grown in culture media M2 containing 50% sand + 40% clay + 10% compost produced the heaviest values of the fresh weight (g) of clippings/m2 in the first and second seasons. 2- The plants irrigated with highest water level (7 liters/m2/day from July to 1st October, then 7 liters/m2/ three days from 1st October till the mid-November) resulted the best fresh weight (g) of clippings/m2 in both seasons. 3- The plants grown in M2 containing 50% sand + 40% clay + 10% compost and irrigated with highest water level (7 liters/m2/day from July to 1st October, then 7 liters/m2/ three days from 1st October till the mid-November) produced the heaviest fresh weight (g) of clippings/ m2 in the first and second seasons. Dry weight of clippings (g/ m2): 1- The highest values of the dry weight (g) of clippings/m2 were obtained with the plants grown in the culture media M2 containing 50% sand + 40% clay + 10% compost in the first and second seasons. 2- The irrigation with highest water level (7 liters/m2/day from July to 1st October, then 7 liters/m2/ three days from 1st October till the mid-November) gave the heaviest dry weight (g) of clippings/m2, in the first and second seasons. 3- The highest dry weight (g) of clippings/m2 were obtained from the plants grown in M1 containing 75% sand + 20% clay + 5% compost and irrigated with highest water level (7 liters/m2/day from July to 1st October, then 7 liters/m2/ three days from 1st October till the mid-November)in the first and second seasons.