Effect of Foliar Spray With Urea and Iron on Vegetative Growth and Mineral Contente of Peach Transplants cv. Dixired


Abstract in English

Peach (Prunus persica Batsch) transplants cv. Dixired were sprayed three times a season with three levels of urea (45% N) (2.5, 5.0 and 7.5 gm/ L), and two levels of iron (10 and 20 mg Fe/ L) using chelated iron Fe-EDDHA (6%iron), each alone or in combination. Meanwhile the control transplants sprayed with distilled water during 2006 and 2007 growing seasons, twenty days intervals between each spray and another, the first spray is done at the first week of May in both seasons. Results indicated that all spray treatments with urea and iron each alone or with each other significantly increased leaves N, K, Fe, chlorophyll and carbohydrate concentration, transplant leaves area, shoots number, transplants height, main stem diameter and vegetative and root dry weight. While leaves P concentration, significantly decreased with the foliar spray with two concentrations of iron alone, or in combination with all concentrations of urea. The best treatment was 7.5 gm urea/ L + 20 mg Fe/ L., which gave the highest means of all studied parameters, except leaves P concentration, which were the highest mean of it was in the control treatment at both seasons.

References used

Al-Bamarny, S. F. A.; M. A. Salman and Z. R. Ibrahim. (2010). Effect of some chemical compounds on some characteristics of shoot and fruit of peach (Prunus persica L.) cv. Early Coronet. Meso. J. Agric. 38 (Supplement 1):35– 44
Arnon, D. I. (1949). Copper enzymes isolated chloroplasts polyphenol oxidase in Beta vulgaris . Plant Physiol. 24 : 1-15
Awad, S. M. and A. R. Atawia. (1995). Effect of foliar sprays with some micronutrient on 'Le-Conte' pear trees. I: Tree growth and leaf mineral content . Annals Agric. Sci. 40 (1): 359-367

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