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Fertilization optimization in the case of the Luiza potato variety through the refinement of the romanian chemical fertilizers in the Tg. Secuiesc Depression (Romania)

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Author(s): Zsuzsanna NEMES | Daniela POPA | Anca BACIU | Luiza MIKE

Journal: Analele Universitatii din Oradea, Fascicula Biologie
ISSN 1224-5119

Volume: TOM XVI;
Issue: 1;
Start page: 82;
Date: 2009;
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Keywords: potato | variety | fertilization | nitrogen doses | Romania

ABSTRACT
Profitable potato cultures cannot be developed without chemical and/or organic fertilization. The fertilization must assure the best possible valorization of the intensive varieties’ production potential under the ecological conditions existing in the cultivation region.The experiments took place at the Potato Research and Cultivation Station Tg. Secuiesc in the period 2005-2007.Our research proposed this approach to the aspects of potato fertilization in the case of the Luiza variety, created at the PotatoResearch and Cultivation Station Tg. Secuiesc.To achieve a higher production level, 7 levels of fertilization and 3 types of fertilizers were studied, representing NPK rates of 1:0:0 (ammonium nitrate), 1:1:0 (Complex 20:20:0), respectively 1:1:1 (Complex 15:15:15).The highest and most stable productions are achieved by adding nitrogen in doses of 150-200 kg active substance / ha, and the presence of phosphorus and potassium up to these levels provides a maximum production at the application of the binary fertilizer, Complex 20:20:0, as well as at the application of the fertilizer Complex 15:15:15.
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