Effect of Nitrogen and Phosphate Fertilizers on the properties of vegetative growth and aromatical oil yield ofLocal mint (Mentha spicata L.)

	Effect of Nitrogen and Phosphate Fertilizers on the properties of vegetative growth and aromatical oil yield ofLocal mint (Mentha spicata L.)
journal of kerbala university
Article 1, Volume 6, Issue 1, 2010, Pages 182-186 PDF (0 K)
Abstract
A field experiment was conducted in the season of 2005-2006 in a private farm in Najaf province. The aim was to investigate four mixtures of nitrogen and phosphate fertilizers i.e. (0, 100 kg N.ha-1, 150 kg P2O5.ha-1, and 100 kg N.ha-1 + 150 kg P2O5.ha-1) on vegetative growth properties and oil yield of local mint. A simple experiment was performed using Completely Randomized Design (C.R.D.) with three replications. The means were compared according to L.S.D. (Least significant Difference) at 0.05 probability level. Results showed that the nitrogen and phosphate fertilizers improved the vegetative growth properties (plant height, number of leaves and branches, vegetative yield (ton.ha-1) and total chlorophyll content in leaves). Oil yield increased significantly compared with non-fertilized plants. The fertilized plant with (100 kg N.ha-1 + 150 kg P2O5.ha-1) gave the highest parameters, such as plant height (64.26 cm), number of branches (8.36 branch.plant-1), vegetative yield (10.44 ton.ha-1) and total chlorophyll (7.01 mg.100 g-1 fresh weight). In addition to that there was a significant increase in oil yield to (53.72 kg.ha-1) as compared with non-fertilized plants which gave the least vegetative parameters and less oil yield (46.71 kg.ha-1). The conclusion of this experiment it is useful to use nitrogen and phosphate fertilizers together to improved the vegetative growth, and oil yield of the local mint plant.

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