Interactive effect of phosphorus and potassium on some properties of barley plant growth

Abstract

To study the interactive effect of phosphorus concentration (0،75،100 and 125) ppm P of soil as diammonium phosphate (48% P2O5) and potassium concentration (0،50،100 and 125)ppm K of soil as potassium sulfate (50% K2O) on growth some properties of barley plants growth . Plastic pots experiment was conducted at Omar Al-mukhtar Univ , soil and water dept. Plant height ,shoots dry weight , roots dry weight and biological yield were determination. Results were showed that, P concentrations were significantly effect in increasement of all above properties. P125 superior at values of (39.10cm،20.0g،9.45g and 29.39g) per pot. K concentrations were significantly effect increasement of all above properties, K125 superior at values of (38.9cm، 20.39g ،11.63g and 32.01g) per pot. The interaction between concentrations of P and K increased all above properties significantly . The treatment P125 K125 was superior on all treatments at values of (42.9cm، 22.73g، 13.59g and 36.32g) per pot.