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The Effect of Nitrogenous and Phosphate Fertilizers of the Properties on the Vegetative Growth and Aromatical Oil Yield of Local Mint

A field experiment was carried out the season 2005-2006 in private farm in Najaf province to investigate
2 5 four mixture of nitro g e n o u s a nd phosphate fertilizers i.e. (0, 100 kg N/ha, 150 kg P O /ha, and 100 kg N/ha
+ 2 5 150 kg P O /ha) on vegetative growth properties and oil yie ld o f lo c al mint. A simple experiment was
performed through Completely Randomized Design (C.R.D.) with thre e re p lic a tes. The mean results compared
according to L.S.D. (Least significant Difference) with 5% probability leve l. Th e re sults showed that the
nitrogenous and phosphate fertilizers has improved the vegetative growth pro p e rties (plant height, number of
leaves and branches, vegetative yield (ton/ha) and total chlorophyll content in leaves). Oil y ie ld increased
s 2 5 ignificantly compared with non-fertilized plants. So, the fertilized plant with (100 kg N/ha + 150 kg P O /ha)
gave the highest parameters, since the plant height (64.26 cm), number of branches (8.36 branch/plant),
vegetative yield (10.44 ton/ha) and total chlorophy ll (7.01 mg/100 g fresh weight). In addition there is
significant increas e in oil yield to (53.72 kg /ha) as compared non-fertilized which gave the least vegetative
parameters and less oil yield (46.71 kg/ha). The conclusio n of this experiment is that using nitrogenous and
phosphate fertilizers together have improved the vegetative growth, oil yield of the local mint plant.



Need more information about growing mint? You can always return to the mint fertilzer.