تأثير التسميد النتروجيني و الرش بالحديد في بعض صفات النمو لنبات الداماس Concarpus lancifolius Engl

Abstract EN

An experiment was conducted at Najaf Municipality Nursery, Najaf -Governorate, using Concarpus lancifolius.

Engl.

During 2008-2009 growing season.

The aim was to study the effect of supplying nitrogen fertilization CO(NH2)2 46%, (soil application, concentration (0.00, 1000, 2000 and 3000) mg.L-1 and three concentrations of Fe-EDAT (0.00 500 and 1000) mg.L-1 on growth parameters of plant Concarpus lancifolius.

Engl.

The experiment was carried out using Complete Randomized Design (CRD) with three replications.

The means were analyzed using L.S.D.

at 0.05 probability.

The results showed that fertilizing Concarpus lancifolius Engl.

with 2000 mg.L-1 improved significantly plant vegetative growth characteristics (plant length, number of secondary branches, length of secondary braches, number of leaves per plant, leaf area index, leaf dry weight, stem dry weight , leaf content of total chlorophyll , plant content of total carbohydrate , plant content of nitrogen .

There was a negative effect on all studied characteristics.

Meanwhile spraying Fe-EDTA with concentration of 500 mg.L-1 showed a significant effect on plant vegetative growth characteristics compared to the control treatment.

The interaction effect between nitrogen fertilizer, 2000 mg.L-1and praying with Fe-EDTA, 500 mg.L-1 showed significant effect on plants vegetative growth.

Meanwhile treatment of nitrogen fertilizer, 3000 mg.L-1and praying with Fe-EDTA, 1000 .L-1 showed negative effect on plant studied parameters.

It may be concluded that Concarpus lancifolius Engl.

requires small application of fertilizer to improve plant vegetative which makes this plant suitable for street middle and side isles plantation.