Dynamics of the level and ratio of nitrogen and phosphorus in carp ponds water: the effect of mineral fertilizers upon its quality
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2009, Vol 2, Issue 2
Abstract
The purpose of this investigation is to establish the dynamics of nitrogen and phosphorus level variation and of their ratio after mineral fertilizers application in water. After mineral fertilizers application into the ponds, the real biogenic quantities in water have increased by 2.8-10 times for nitrogen, and by 2-28 times for phosphates, at scheduled nitrogen levels of 5-7 mg L-1 and nitrogen/phosphorus ratio of 10:1, 16:1 and 20:1, respectively. During the period 1st – 3rd day after fertilizer application, optimum nitrogen levels have been preserved of 2.60 – 5.79 mg L-1. A tendency of residual biogenic quantities decrease in the water has been observed from the 10th to the 30th day after fertilizer application
Authors and Affiliations
Liliana Hadjinikolova, Angelina Ivanova
Keywords
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