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Eggplant fruits are abundant in potassium, the amount of which ranges from 200 to 600 mg K⋅100 g-1 FM, depending on a variety. They are also a rich source of phosphorus, magnesium, calcium, and iron. As there are no fertilization recommendations for eggplant cultivation under cover, this study been undertaken to evaluate the vegetable’s requirements. The aim was to test how the type and dose of potassium...
The aim of the present research was to evaluate whether or not, and to what extent, exclusive mineral fertilisation affects the content of water-soluble ions determining the soil salinity. The soil was sampled from the arable layer of a multi-year field experiment carried out in 1974-2007. The research involved differentiated nitrogen fertilisation (factor I, n=3) and potassium fertilisation (factor...
We studied the effect of differentiated nitrogen-potassium fertilization upon the growth, yield and chemical composition of garden rocket leaves grown in unheated greenhouse in autumn. Two nitrogen doses were applied (0.3 and 0.6 g dm⁻³) in the form of calcium saltpeter and two doses of potassium (0.3, 0.6 and 0.9 g dm⁻³) in the form of chloride and sulfate. The increased amounts of nitrogen and potassium...
The present studies were carried out on the basis of field experiment on the strongly acidic soil (pH 3.9). The following treatments were applied: liming, fertilization with manure and nitrogen in the form of ammonium (NH₄)₂SO₄ and nitrate Ca(NO₃)₂ forms of nitrogen, as well as sulphate K₂SO₄ and chloride KCl potassium fertilizers. Liming (CaCO₃) eliminated the effect of aluminium mobilization by...
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