Effects of Boron and NAA spraying on some characteristics of growth of sour orange ( Citrus aurantium L. )seedlings

	Effects of Boron and NAA spraying on some characteristics of growth of sour orange ( Citrus aurantium L. )seedlings
journal of kerbala university
Article 1, Volume 3, Issue 3, 2007, Pages 253-258 PDF (0 K)
Abstract
An experiment was conducted on Najaf governorate at private nursery of seedlings production near Kufa technical institute to study the effect of Boron spraying at four concentrations : ( 0 , 10 , 20 and 30 mg.Lˉ¹ ) and Naphthalene Acetic Acid at four concentrations : ( 0 , 2000 , 4000 and 6000 mg.Lˉ¹ ) . The interactions between spraying of Boron and NAA on 3- month old seedling were also studied. Seedlings height leaves number , leave area, stem diameter and roots length were recorded. The following Results were obtained : Boron spraying at concentration of 30 mg.Lˉ¹ or NAA spraying at concentration of 4000 mg.Lˉ¹ caused an increase in seedling height : leaf number , seedling leaf area , stem diameter and roots length compared with the control treatment that gave the least values for the mentioned parameters. It was found from the interaction between spraying Boron at a concentration of 30 mg.Lˉ¹ and NAA spraying at concentration of 4000 mg.Lˉ¹ results in significant increase in all shoot and root characteristics , their values were 75.35 cm , 81.87 cm , 123.06 cm² , 88.8 mm , 64.6 g/plant , 46.8 cm , for the character of seedling height , leaf number , leaf area , seedling stem diameter , shoot weights and root length , respectively compared with the control treatments that gave the least values for the above mentioned characters , that they were 50.09 cm , 5.76 , 102.96 cm² , 7.14 mm , 15.83 cm respectively.

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