Wyniki wyszukiwania

1

The effect of mineral fertilization [NPK] on the concentration of mineral forms of nitrogen in a meadow soil

100%

Wiater J., Kozera P., Niczyporuk A.

Annals of Warsaw Agricultural University. Agriculture

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2001

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nr 39

41-49

2

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Effect of chelated and mineral forms of micronutrients on their content in leaves and the yield of lettuce. Part I. Manganese

84%

Kozik E., Tyksinski W., Komosa A.

Acta Scientiarum Polonorum. Hortorum Cultus

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2008

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tom 07

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nr 1

In pot experiments with lettuce, the effect of chelated and mineral forms of manganese on the fresh matter of plants and on the content of Mn, Cu, Zn and Fe in lettuce leaves were compared. Lettuce plants were grown in a peat substrate where the manganese content was differentiated in four levels: 10, 20, 30, and 60 mg Mn‧dm⁻³. Independent of the form of the applied manganese, no differences were found in fresh matter of lettuce heads at manganese levels of 10 to 30 mg Mn‧dm⁻³ substrate. When the plants were nourished with the mineral form of manganese, then in comparison with the chelated form of manganese, the content of manganese in lettuce leaves was higher. The differentiated fertilization with manganese exerted an effect on the nutritional status of plants with copper, zinc and iron. After the application of chelated manganese, there was more copper and iron in the lettuce, but a lesser amount of zinc than in case of manganous sulphate application. The increase of manganese content in the substrate caused an increase of this component in the plants.

3

The effect of the method of soil care in an apple orchard on the content of mineral forms of nitrogen and the biochemical activity of the soil

84%

Bielinska E. J., Domzal H., Lipecki J.

Bibliotheca Fragmenta Agronomica

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1997

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tom 2A

4

Dynamics of mineral nitrogen release and soil self-cleaning processes after applying farmyard manure and sewage sludge

67%

Gondek K., Chmiel M.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2006

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tom 09

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nr 4

5

Effect of chelated and mineral forms of micronutrients on their content in leaves and the yield of lettuce. Part II. Copper

67%

Kozik E., Tyksinski W., Komosa A.

Acta Scientiarum Polonorum. Hortorum Cultus

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2008

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tom 07

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nr 3

In pot experiments, in spring 2006 and 2007, a comparison was made between the chelated and the mineral forms of copper on the yielding of lettuce and on the content of Cu, Zn, Mn and Fe in lettuce leaves. Plants were grown in peat substrate supplemented with Cu doses of 5, 25, 50 and 75 mg∙dm⁻³. A greater mass of lettuce heads was obtained after the application of the mineral form of copper. In the range of doses: 5–50 mg Cu∙dm⁻³, the mean yields of lettuce did not differ. In the second year of studies, the application of copper chelates in the dose of 75 mg∙dm⁻³ caused a high reduction of yield. The mean copper content in lettuce, after the application of the chelated Cu form, was twice higher than after the use of the mineral Cu form. Iron content in lettuce after the application of copper chelates was higher than after the use of copper sulphate, while the contents of zinc and manganese were smaller.

6

Investigation of iron status in Terric Histosols

67%

Matyka-Sarzynska D., Sokolowska Z.

International Agrophysics

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2002

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tom 16

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nr 2

7

Function of a shelterbelt as a biogeochemical barrier in the agricultural landscape

67%

Szajdak L., Maryganova V., Meysner T.

Acta Agrophysica

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2002

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tom 67

8

Przemiany mineralnych form azotu w glebie nawadnianej oczyszczonymi ściekami

51%

Kotowska U., Wlodarczyk T.

Acta Agrophysica. Rozprawy i Monografie

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2005

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nr 2[119]

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