REDOX POTENTIAL CHANGE OF LIGHT GREY FOREST SURFACE-GLEYED SOILS DEPENDING ON THE LONG-TERM ANTHROPOGENIC IMPACT
Journal Title: Вісник Львівського університету. Серія географічна - Year 2017, Vol 51, Issue
Abstract
Influence of prolonged application of various fertilizer systems and periodic liming on the dynamics of redox potential (ROP) of light grey forest surface-gleyed soils under different crop rotations is presented in the research results. The obtained ROP indexes showed significant variability invariants of experiment depending on the fertilizer, lime and terms of determination in both fields of winter wheat and spring barley. The highest ROP values in variants with organo-mineral and mineral fertilizer systems with background of liming were observed in spring. They decreased during the period of maximum growth and development of winter wheat and spring barley together with the growth of microbiological activity and the intensity of CO2 release, and slightly increased before harvesting. It was established that the application of organo-mineral and mineral fertilizer systems with the background of liming with CaCO3 dose, calculated according to hydrolytic acidity, to the greatest extent increase ROP, especially during the period of intensive growth and development of plants. Compared to similar fertilizer system with the background of liming with a CaCO3 dose, calculated according to the pH- buffer capacity, it contributes to one-sided growth of oxidation processes and additional mineralization of humus. Thus, the organo-mineral fertilizer system with the application of 10 tons of manure per hectare of crop rotation and one norm of mineral fertilizers (N65P68K68) with the background of liming with CaCO3 dose, calculated according to the pH-buffer capacity (2,5 t/ha), contributes to rational use, preservation and fertility protection of light grey forest surface-gleyed soils, optimizing the redox potential during whole growing season of crops, and provides high yields. Studies have shown that during whole growing season of winter wheat and spring barley the lowest values of oxidation were obtained with the long-term use (for 50 years) of mineral fertilizer system with the introduction of one norm of mineral fertilizers only. It led to a decrease in the actual soil acidity to 4,03 pHKCl units and the increase of hydrolytic acidity to 5,11 mg-eq/100 g of soil. This once again emphasizes the importance of periodic liming of acid light grey forest surface-gleyed soils as a factor weakening the negative influence of mineral fertilizers.
Authors and Affiliations
Oleg Havryshko, Yuriy Olifir, Tetiana Partyka
Keywords
Related Articles
- EP ID EP317487
- DOI -
- Views 69
- Downloads 0
THE GEOMORPHIC FEATURES OF LANDSLIDE ON KUPRIN ST. IN KHMELNYTSKYI CITY
The landslide in Quaternary loess sediments occurs a balka at the Samets River left bank and is limited by Metropolitan Sheptytsky St. in the West, Kuprin St. in the North, Kuprin lane in the East (the last locates 140–2...
CONTRIBUTION OF ROMANIAN SPEAKING SCIENTISTS IN THE DEVELOPMENT OF GEOGRAPHIC RESEARCHES IN BUKOVINA
The research and discovery of unknown pages of Ukrainian geography is an essential condition for the development of all areas of scientific and geographical process. The study and research of scientific heritage of Roman...
ANALYSIS OF THE RELATIONSHIPS BETWEEN MORPHOMETRIC RELIEF PARAMETERS AND VISUAL CHARACTERISTICS OF UKRAINIAN CARPATHIANS ECOSYSTEMS
The paper deals with the analysis of the relationships between the visual characteristics of mountain ecosystems as they appear on spatial images, and the characteristics of the abiotic conditions as being governed and (...
SOIL-CARTOGRAPHIC MATERIALS AS A BASIS FOR THE DEVELOPMENT OF AGRICULTURAL-MELIORATIVE MEASURES ON IRRIGATION MASSIF AND THEIR EVALUATION
The article discusses the problems of using soil-cartographic materials in the development of measures to optimize land-valuation work on the irrigation massifs of the south of Ukraine. Attention is focused on such probl...
MODERN STATE OF STUDY OF INITIAL SOILS AND INITIAL GROUNDING (ANALYTICAL REVIEW)
On the basis of elaboration and analysis of literary sources, a modern state of scientific research on evolution, genesis, distribution, morphology, classification of initial soils and peculiarities of initial soil forma...