engleski

Influence of mineral and organic fertilizer on primary contamination of the ground waters in Eastern Croatia

Plant nutrition is a significant factor of yield and its quality. If organic and mineral fertilizers use results in yield increase, physical and chemical soil traits will also be affected. Harmony of economically and ecologically justifiable crop production is achieved by sustainable agriculture system. Investigations aimed at the above mentioned goals were carried out by field experiments on the stationary model with surface lysimeters (12 pieces) during years 2003 and 2004. Effect of organic and mineral fertilizer on primary water pollution was investigated. Series of required monitoring and measuring: climatic factors, analyses of liquid manure, soil and filtration waters as well as lysimeter weighing were conducted during winter wheat growing season. Achieved results were processed by statistically adequate methods and means of achieved values were used for results interpretation. Efficiency of mineral fertilization was higher than organic fertilization with the same nitrogen content in real climatic and pedological conditions. Pollution by nitrogen in filtration waters was higher at mineral fertilization variant. Nitrogen losses by leaching were at the stationary in positive correlation with used amount of organic and mineral fertilizer.

wheat ; mineral and organic fertilization ; soil and water pollution ; lysimeter ; nitrogen leaching

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