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FERTILIZATION OPTIMIZATION IN THE CASE OF THE PRODUCTIV POTATO VARIETY THROUGH THE REFINEMENT OF THE ROMANIAN CHEMICAL FERTILIZERS IN THE TARGU SECUIESC DEPRESSION

2009; University of Oradea Publishing House; Volume: 16; Issue: 2 Linguagem: Inglês

1224-5119

Z. Nemes, A. Baciu, R. Motica, Luiza Mike,

Potato Plant Research

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 Targu Secuiesc in the period 2005-2007. Our research proposed this approach to the aspects of potato fertilization in the case of the Productiv variety, created at the Potato Research and Cultivation Station Targu Secuiesc. To achieve a higher production level, 7 levels of fertilization and 3 types of fertilizers were studied, representing N:P:K 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.