Effect of Sowing Some Range Species on the Production of Desertified Rangelands in Sinnar State/ Sudan

Sudan J. Des. Res. 2: 49-61, 2010A study was conducted at Elsuki site, 50kms south of Sinnar town at the east bank of the Blue Nile, for two seasons (2005/06 and 2006/07) to evaluate the effect of some management practices on desertified rangela nds at Sinnar State under rain - fed conditions. The design used was complete randomize d block design with six replicates. The pasture species were two leguminous pastures (Rhynchosia memnonia and Zornia gluchidiata), and two grasses ( Barachiaria lata and Ce nchrus ciliaris ). Each replicate was divided into (10×40 m) plots, and the pasture species were assigned randomly to the plots. Measurement of plant density, composition, ground cover, frequency, forage quality an d forage yield were carried out . Generally, the sown pasture species had no significant effect on total plant density and native species density, the exception was Zornia gluchidiata which was unable to compete with other species and completely disappeared after one month. The highest plant composit ion and frequency was recorded for Barachiaria lata, Sorghum spp and Rhynchosia memnonia . Treatments had no significant effect on ground cover. The highest crude protein % was scored by Rhynchosia memnonia ,. The highest crude protein % was scored by Rhynch osia memnonia , and the highest crude fiber % by Zornia gluchidiata. Among pasture species, Barachiaria lata scored the highest forage yiel