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Phosphoric regime of light chestnut soil and sugar beet yield with long-term use of phosphorous fertilizers

Alimbekova Balnur, Yeleshev Rakhimzhan, Bakenova Zhenisgul, Shibikeyeva Aigerim, Balkozha Marzhan

Journal of Water and Land Development

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2021

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no. 49

151--155

EN

This study presents the results of research on the effect of long-term use of phosphorus fertilizers on permanent sugar beet crops for more than 50 years and on the transformation of phosphate forms on light chestnut soil and its yield. Our work aims to establish the main factors of quantitative and qualitative changes in various phosphates in light chestnut soil. Despite the large amount of practical material, the influence duration of phosphorus fertilizer application has not been sufficiently studied on the irrigated soils of Kazakhstan. It should be noted that the current study was carried out in long-term stationary experimental sites for the production of sugar beet with permanent sowing. The introduction of phosphate fertilizers primarily on the permanent crops of sugar beets in the same norms contributes to a more significant increase in gross phosphorus reserves. The soil content of gross phosphorus for 58 years on the control and nitrogen-potassium variants show practically no changes. Furthermore, when phosphorus fertilizers are applied on the variant with the annual application of a single norm of phosphorus and its amount for 58 years (4400 kg∙ha–1 of application doses) its content increased by 2660 mg∙kg–1, and with the introduction of its one and a half norms (6600 kg of application doses) by 2860 mg∙kg–1 of soil.

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Analysis of the spatial distribution of phosphorus fractions in the bottom sediments of the Solina-Myczkowce dam reservoir complex

Bartoszek L., Tomaszek J. A.

Environment Protection Engineering

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2011

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Vol. 37, nr 3

5-15

EN

The statistical analysis was performed to compare average contents of phosphorus fractions in the bottom sediments between the lacustrine zone and the riverine zone in the Solina Reservoir, between the main object and the retarding one as well as between all the research stations of the analysed reservoirs. It was found that the deposits from the stations localized in the lacustrine zones of both reservoirs did not differ significantly in regards to total phosphorus content, inorganic phosphorus, and non-apatite, inorganic phosphorus fractions, however, they were characterized by significantly different contents of organic phosphorus.

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Temporal variability in the chemical composition of bottom sediments in the Pomeranian Bay (southern Baltic)

Burska D., Frankowski L., Bolałek J.

Oceanologia

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1999

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No. 41 (3)

445-459

EN

Seasonal changes in the chemical composition of sediments from four stations located in the Pomeranian Bay were analysed. The investigations were carried out in four periods (March and July 1996, and May and October 1997). The following parameters were investigated: organic carbon and nitrogen, total phosphorus and organic phosphorus, loss on ignition and redox potential. On the basis of these results the influence of the following processes and phenomena was noted: the early spring phytoplankton bloom dominated by diatoms (March 1996); the intense inflow of allochthonous matter brought into the Bay with the waters of the Swina (May 1997); the summer bloom of blue-green algae and dinoflagellates (July 1996); the consequences of the summer 1997 flood which occurred in southern Poland (October 1997).