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Chemical composition and content of selected heavy metals in the wood of common sea buckthorn (Hippophae rhamnoides L.) growing in the coastal regions of the Baltic Sea

100%

Pradzynski W., Zborowska M., Waliszewska B., Szulc A.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

2010

tom 09

nr 1

The investigations were carried out on the common sea buckthorn (Hippohaë rhamnoides L.) growing in the coastal areas of the Baltic Sea. The performed analyses comprised the determination of the basic chemical composition and selected heavy metals. For comparative purposes, investigations were also conducted on wood of the common sea buckthorn growing in urban conditions, namely in the city of Poznań. On the basis of the performed experiments it was found that the content of cellulose in the examined material ranged from 33.6 to 39.3% with the highest values determined in the wood of bushes growing in urban conditions. In addition, considerable differences were also observed in the lignin content in the compared samples, whereas the concentration of pentosans remained at the level of 18% irrespective of the place of sample collection. Concentrations of the examined heavy metals did not exceed levels dangerous for the growth and development of the examined bushes.

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Effect of growing site on the health status of hypericum [Hypericum perforatum L.] in crop cultivation

100%

Blazej J.

Acta Agrophysica

2001

tom 52

This paper presents results of previous research, which may prove useful for the re-introduction of hypericum to crop farming. Climatic conditions for growing thisl herb in Poland are quite good. It requires fertile soil, with light or medium firmness (compactness), which is permeable and sufficiently wet, and has a slight acidic reaction. The forecrop is very important in this case. Hence, this paper evaluates its effect on the healthiness of plants and thus time-scale for plantation usage. The studied plantations were established after potatoes and wheat. It was observed that hypericum grew very slowly in the first year and was labour consuming due to weed control. A two- year old plantation gave dense herb growth independently of the forecrop. However, in the spring of the third year, hypericum sprouted irregularly. Herb plants in the after-wheat plantations showed retarded development in 39% and up to 34% of the plants in the after-potato plantation. Moreover, single stalks, decreased height or poor foliage was also observed. Laboratory diagnostic tests showed that stalk bases, root necks and main roots were intensively infested by the fungi that are pathogenic for most crops, i.e. the species of Botrytis, Fusarium, Phoma and Rhizoctonia.

Ograniczanie wyników

1 Acta Agrophysica

1 Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

1 Blazej J.

1 Pradzynski W.

1 Szulc A.

1 Waliszewska B.

1 Zborowska M.

1 2010

1 2001

Wyniki wyszukiwania

Chemical composition and content of selected heavy metals in the wood of common sea buckthorn (Hippophae rhamnoides L.) growing in the coastal regions of the Baltic Sea

Effect of growing site on the health status of hypericum [Hypericum perforatum L.] in crop cultivation