Effect of CO2 enrichment and foliar spray agroleaf and kelpak on lraves content of n, p, k, protein and carbohydrate of smooth peach transplants

الملخص EN

An experiment was conducted at the Lath house of Horticulture Department , College of Agriculture , University of Bagdad, during the growing seasons 2010 , 2011, to study the effect of CO2 enrichment and Foliar spray of Agroleaf and Kelpak on peach transplants (nectarina) leaves contents of nutrients N, P, K, Protein and carbohydrates.

180 one year old transplants were selected planted in polyethylene bags containing 15 kg soil and exposed to four concentrations of CO2 (atmospheric,600, 900, 1200).

Agroleaf and Kelpak were sprayed at (2.5, 5 g.L-1) and (2, 4 ml.

L-1) respectively in addition to control.

The experiment was designed according to the Nested-factorial experiments.

Treatment C3 gave low contents of N (1.93, 1.86%), P (0.27, 0.28%), K (1.84, 1.78%) and Protein (12.04, 11.60%) in the leaves for two seasons respectively, while the treatment of C0 increased the contents.

Enrichment of CO2 led to increase the percentage of carbohydrate in the leaves.

Treatment T2 significantly increased the contents of N (2.85, 2.98%), P (0.40, 0.40%), K (2.36, 2.32%), Protein (17.82, 18.65%) and carbohydrates (15.76, 16.08) in the leaves for both seasons.