Effect of some mineral nutrients in growth and some physiological variables in barley plant

Pot experiment was conducted in the wiry house to study the effect oftreated soil with boric acid ,magnesium sulphate and calcium chloridewith concentrations of (0.1 %,0.2%,0.3%) \Kg soil on growth of barleycultivars ( 402) by its effect on shoot and root systems length their dry\Veight ,chlorophyll ,carbohydrate ,protein, relative water content ofleaves and mineral composition of shoot and root systems. The resultsshows that treating the soil with calcium chloride lead to enhance theplant growth by increasing shoot length and its dry weight, root length,leaves content of protein and carbohydrate and also lead to enhance themineral composition of shoot and root systems by increasing calcium, magnesium, potassium concentrations as compared with the othertreatments . \Vhile the results showed that when soil treated with boricacid lead to significant decrease in shoot length and dry weight of shoot,root systems, chlorophyll a,b content of leaves and cell membranestability and increase in protein concentrations of shoot and root systemsby decreasing potassium and magnesium of shoot and root systems ascompared with the other treatments.