The present study aimed to evaluate the ecological and phytosociological
status of panicum turgidum under the environmental conditions of the eastern
province of Kingdom of Saudi Arabia. 48 stands (each of 25 m2, i.e. 1x25 m)
were randomly selecte
d from three locations (Riyadh, Ogair and Damam)
which represent the optimum habitat of P. turgidum. The obtained results
showed that the dominated plant species associated with P. turgidum were
Cyperus conglomertus, Eragrostis barrelieri, Haloxylon persicum, Haloxylon
salicornicum, Heliotropium bocciferum, Launaea mucronata, Leptadenia
pyrotechnica, Monsonia nevia and Plantago ovata. P. turgidum, and is
recommended as an important grazing vegetation in deep sand soil. Soil salinity
(ECe), soil PH, CaCO3, organic matter, soil texture (Sand %) and soil moisture
(FC) were the most limiting soil properties affecting P. turgidum distribution
naturally at the studied area.