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

100%

Kozik E., Tyksinski W., Komosa A.

Acta Scientiarum Polonorum. Hortorum Cultus

2008

tom 07

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.

Content of microcomponents and ginkgoflavonoglycosides in the leaves of Ginkgo biloba Hipokrates var.

100%

Korszun S., Golcz A.

Herba Polonica

2007

tom 53

nr 3

The studies referred to the content of microelements: iron, manganese, copper and zinc as well as ginkgoflavonoglycosides in the leaves of maidenhair tree Hipokrates var. sampled in four terms separately from one-year old and two-year old shoots. It was found that, irrespectively of the harvest term, leaves taken from 1-year old shoots in comparison with 2-year old shoots contained more biologically active compounds, but they accumulated less amounts of Fe, Mn and Cu. The Zn level in leaves taken both from 1-year and 2-year old shoots was similar.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Herba Polonica

1 Golcz A.

1 Komosa A.

1 Korszun S.

1 Kozik E.

1 Tyksinski W.

1 2008

1 2007

Wyniki wyszukiwania

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

Content of microcomponents and ginkgoflavonoglycosides in the leaves of Ginkgo biloba Hipokrates var.