This study has been carried out at the Faculty of Environmental Agricultural Science (FEAS), Al-Arish -
Suez Canal University (SCU) during the successive growing season 2012/2013. The third experiment has been done at
the shad net house of the experimental crop farm using jojoba seedlings at one year old, which growing in pots.
Seedlings have been irrigated four times weekly in different four treatments of saline water concentrations 2000, 4000,
6000 and 8000 ppm, beside the control (tap water). It was observed that vegetative characters of the plants were
significantly decreased with increasing saline water irrigation levels .The maximum values of number of branches ,
root length and number of secondary roots .were resulted with low saline water irrigation level (tap water ), followed
by 2000, 4000, 6000and 8000 ppm which gave the minimum values in this respect. The obtained results cleared that
the concentration of nitrogen, phosphorus and potassium decreased in plant tissue with increasing salinity concentration
level.