Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: Apyros 75 WG herbicide

Sortuj według:

Ogranicz wyniki do:

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Biological properties of soil contaminated with the herbicide Apyros 75 WG

100%

Kucharski J., Wyszkowska J.

Journal of Elementology

2008

tom 13

nr 3

The objective of the study has been to determine the effect of the herbicide Apyros 75 WG on counts of various aerobic microorganisms, activity of soil enzymes and yields of spring wheat. For this purpose, a pot experiment was carried out in a greenhouse. Samples of soil used for the trials represented loamy sand. Having mixed the soil samples with mineral fertilizers, doses of the herbicide were added and the soil was placed in plastic pots. The lowest herbicide dose was the optimum dose recommended by the producer, and the two other doses were 10- and 100-fold higher. The experiment was conducted in two series: I – unsown soil, and II – soil under spring wheat. It has been determined that Apyros 75 WG disturbs soil’s homeostasis, as it disrupts multiplication of some microbial groups, inhibits the activity of soil enzymes and depresses the yield of spring wheat, even if applied in a recommended dose. Among the soil enzymes, dehydrogenases and urease were the least tolerant to the effect of the herbicide, whereas alkaline phosphatase proved to be the most tolerant one. The vulnerability of microorganisms to soil pollution with the herbicide can be arranged in the following decreasing order: ammonifying bacteria > Pseudomonas > copiotrophic bacteria > oligotrophic bacteria > nitrogen binding bacteria > spore-forming oligotrophic bacteria > Arthrobacter > cellulolytic bacteria > Actinomyces > fungi. Growing spring wheat had a positive effect on the counts of microorganisms and activity of soil enzymes.

Ograniczanie wyników

1 Journal of Elementology

1 Kucharski J.

1 Wyszkowska J.

1 2008

Wyniki wyszukiwania

Biological properties of soil contaminated with the herbicide Apyros 75 WG