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Effect of substances separated from oxihumolite on selected vegetable species

100%

Richter R., Hlusek J.

Zeszyty Problemowe Postępów Nauk Rolniczych

1995

tom 422

99-107

Using the vegetationvessel trials with soil naturally contaminated with Zn, Pb and Cd, the effect of sodium humate was observed, after placement into the soil, as exerted on the content of heavy metals and the yields of vegetable crops. Following vegetable species were included: lettuce, kohlrabi, carrot and paprika. The effect of applied humate was found highly significant in the yields of lettuce and kohlrabi, specifically: The content of zinc decreased in the plants, the decrease was the greater depending on their reaction with the respective heavy metal in the soil. The strongest effect on decreasing the contents of Zn and Cd was observed in the lettuce and kohlrabi plants, while in the carrot and paprika plants its effect on the content of heavy metals was weak. In contrast to Zn and Cd the sodium humate decreased the content of lead in lettuce only. According to the ratio of humic acids to fulvic acids it is possible to utilize humate in the first two years following its application, for the purpose of decreasing the Zn, Cd and Pb contents.

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1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Hlusek J.

1 Richter R.

1 1995

Wyniki wyszukiwania

Effect of substances separated from oxihumolite on selected vegetable species