Impact Of Water Harvesting Techniques On Growth Of Some Indigenous Tree Species In Jebel Awlia Locality, Sudan

The broad objectives of this study were to investigate the impact of water harvesting techniques on trees growth and soil moisture content. Field experiments were conducted for two consecutive rainy seasons during 2009 and 2010 around west Omdurman, Jebel Aulia Locality in Khartoum New International Air Port, 40 km south of Khartoum city and 25 km west of the White Nile River in south west direction .The study site lies in the semi- desert region. The experimental design followed was the randomized block design. The water harvesting techniques used were strips, semi-circles, pits and control. The tree species grown were Acaia tortilis subsp raddiana, Acacia senegal and Zizphus spina- christi. The three tree species were planted by using seeds and seedlings. The shoot length, number of leaves and diameter of stem of seedlings of the three tree species were measured every three weeks after sowing or transplanting, during the two rainy seasons. Soil moisture content was measured three times during the rainy seasons (beginning, middle and end).in soil samples taken from three different depths: 0-30cm, 30-60cm and 60-90cm. xi The results showed that the shoot length of Acacia senegal was more than Acacia tortilis subsp raddiana and Zizphus spina christi planted by seedlings in the first season. The growth variables of the three tree species planted by seedlings were significantly better (P