Study of Mandarin Respone to Pruning and Some Growth Stimulators .

	Study of Mandarin Respone to Pruning and Some Growth Stimulators .
Euphrates Journal of Agriculture Science
Article 1, Volume 5, Issue 3, 2013, Pages 37-48
Abstract
This study was conducted in the Lath house of the Horticultural Department, College of Agriculture – University of Baghdad during 2011 – 2012 growing seasons to investigate the influence of pruning and some growth stimulators on vegetative growth characteristic of mandarin c.v. Clementine budded on Sour Orange's root stock.The one years old Clementine transplants transport to poly ethylene bags (weight 10 Kg) in lath house under spraying irrigation system.The transplants was pruned in three levels (Without pruning، one branch/plant ،two branches/ plant), and treated monthly by foliar application of GA3 in concetration 50 and 100 mg/L , Naa in concetration 5 and 10 mg/L and Tryptophan in concetration 50 and 100 mg/L was foliar application every two weeks.the feild experment was conducted as Split- Plot design that pruning present main plot while foliar treatments present sub-plot .The experimental results shows Pruning had a significantly increased effects in shoots nitrogen content , while decrease in leaves area,Dry vegetative and root weight,shoots carbohydrates content. Foliar application of growth stimulators lead to significantly increase in most study characteristic except shoots carbohydrates content and C/N Ratio.

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