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1 Polish Journal of Chemical Technology

1 2006

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Fertilizers for fertigation of orchards and berry fields

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Borowik M. , Biskupski A. , Treder W. , Malinowski P.

Polish Journal of Chemical Technology

2006

tom Vol. 8, nr 3

5-8

The compositions and the production technology of three liquid NPK fertilizers, 10-3-3, 8-3-5, and 6-3-6, and four solid NPKMg fertilizer mixtures, 23-8-8-1, 17-9-17-1, 12-12-24-1, and 10-10-29-1, have been developed. The fertilizers have the ability to acidify water, contain boron and zinc as micronutrients, and comply with the requirements for their designation as the EC fertilizers. The primary raw materials for the production of the liquid fertilizers are nitric acid, phosphoric acid, potassium carbonate, ammonium nitrate, and ammonium sulfate. The raw materials for the production of the solid fertilizer mixtures are ammonium nitrate, ammonium sulfate, urea phosphate, potassium sulfate, and a dehydrated magnesium sulfate. The brief foredesigns of the plants for the production of the liquid fertilizers and solid fertilizer mixtures have been developed. The usability of the fertilizers for the fertigation has been tested in agricultural experiments in the cultivations of a highbush blueberry, strawberry, and apple-trees. In the case of the fertigation of the highbush blueberry, fruit yield increments by 18%, in comparison with a broadcast fertilization, have been obtained.