Effect of Phosphorous, Magnesium and Plant Growth Regulators on Avegetative Growth and Chemical Contents of Basil Plant (Ocimum basilicum L. )

Abstract

A field experiment was conducted in the nursery of the Tikrit University / Faculty of Agriculture, the agricultural season 2013 mint leaf of Basil plant. Experiment design with randomized complete block design RCBD included experiment two factors nutrients in three levels ( not adding fertilizer and adding superphosphate triple P2O5 and a concentration of 7.5 g.Liter-1and the spray chloride magnesium MgCl2 and a concentration of 25 mg. Liter -1) and growth regulators four levels ( not adding regulator and the spraying with IAA concentration of 100 mg . L-1 and the spraying with GA3 concentration of 100 mg . L-1 and the spraying a mixture of IAA + GA3 concentration of 100 +100 mg . L-1 ) and three replications. Results showed that treatment magnesium gave the highest rate of the content of the leaves of the chlorophyll and outperformed the treatment of the mixture of IAA + GA3 concentration of 100 +100 mg.L-1 in plant height and leaf area. The factorial treatment superior of the Add superphosphate and the spraying mixture of IAA and GA3 concentration of 100 + 100 mg.L-1 vegetative growth characteristics in most gave the (45.36) branch.plant-1 and (7582.23) cm2 and (16.400) gm.plant-1 , whale factorial treatment superior the spraying magnesium and the mixture of IAA and GA3 by the increase of nutrients in the leaves content nitrogen, potassium , magnesium, iron ,copper , and , zinc given the concentration of was (3.640 % , 2.960 %, 0.915 %, 79.287 mg . L-1 , 12.498 mg . L-1 , 40.26 mg . L-1 ) consecutively .