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Varietal performance and correlation of okra pod yield and yield components

., Olawuyi, O. J., Abdulmaliq, S. Y., Ige, S. A., Mahamood, J., Azeez. M. A. Afolabi, M. S. (2014), Yield performance and adaptation of early and intermediate droughttolerant maize genotypes in Guinea savanna of Nigeria. Sarhad J. Agric. 30(1), 53‒66. [15] Bello, O. B., Olawuyi, O. J. (2015). Gene action, heterosis, correlation and regression estimates in developing hybrid cultivars in maize. Trop. Agric. 92(2), 102‒117. [16] Adekoya, M. A., Ariyo, O. J., Kehinde, O. B., Adegbite, A. E. (2014), Correlation and path analyses of seed yield in

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Approximation of the WRB reference group with the reapplication of archive soil databases

. Geoderma 155, 344-350. [8] Zádorová, T., Penížek, V. (2011), Problems in correlation of Czech national soil classification and World Reference Base 2006. Geoderma 167-168, 54-60. [9] Pásztor, L., Szabó, J., Bakacsi, Zs., Laborczi, A. (2013), Elaboration and applications of spatial soil information systems and digital soil mapping at Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences. Geocarto International 28(1), 13-27. [10] Huyssteen, C. W., Michéli, E., Fuchs, M., Waltner

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Analysis of Grassland ANPP Dynamics Due to Changes in Climate Variables at Ukrainian Biosphere Reserve ‘Askania-Nova’

world. Soil Sci. Soc. Am. J., 57, 192–194. DOI: 10.2136/sssaj1993.03615995005700010034x. Evans, J.D. (1996). Straightforward statistics for the behavioral sciences . Pacific Grove: Brooks/Cole Publishing. Gavrylenko, V.S. (2008). Present regimes of protected steppe in “Askania-Nova” and some results of their influence on saving biodiversity (in Ukrainian). Nature Reserves in Ukraine , 14(1), 53–61. Gofman, O.P. (2014). Correlation of dynamic of aboveground phytomass of vegetation of Askanian steppe is in connection with the quantity of

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The Evaluation of the Tropospheric Ozone Variability in the Municipality of Suceava from the Meteorological Perspective

Abstract

The daily, monthly and annual variations of the tropospheric ozone in the area of Suceava municipality are described and explained by using the correlations between the ozone concentration and the local meteorological parameters. The meteorological parameters are as follows: the air temperature, the air humidity, the sunshine duration, the wind speed and direction. All parameters represent hourly datasets recorded in the interval 2004-2007. The Pearson correlation coefficients and the linear regressions were obtained for daily, monthly and yearly scales. Significant positive correlations between the O3 and the temperature and strong negative correlations between the O3 and the air humidity were found, especially between 11 a.m. and 8 p.m., during the warm season. The sunshine duration and the wind speed and direction were found to have weaker, but good positive correlation with the O3 during the same hourly interval. The weekend effect of the ozone exists in the City of Suceava too, as the reduced road traffic during the weekend causes higher concentrations of ozone. The wavelet analyses were conducted in order to further explain the variability of the ozone.

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Bird Communities and Vegetation Composition in the Urban Forest Ecosystem: Correlations and Comparisons of Diversity Indices

vegetation structure: I. Correlations and comparisons of simple and diversity indices. Oecologia, 61, 277−284. DOI: 10.1007/BF00396773. Erofeev, I. (1960). Vinnica (in Russian). Moscow: Education. Etterson, M.A., Etterson, J.R. & Cuthbert F.J. (2007). A robust new method for analyzing community change and an example using 83 years of avian response to forest succession. Biol. Conserv., 138(3−4), 381−389. DOI: 10.1016/j.biocon.2007.05.003. Felton, A., Hedwall, P.O., Lindbladh, M., Nyberg, T., Felton, A.M., Holmstrom, E

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Bird communities and vegetation composition in natural and semi-natural forests of megalopolis: correlations and comparisons of diversity indices (Kyiv city, Ukraine)

−33. Blinkova, O. & Shupova T. (2017). Bird communities and vegetation composition in the urban forest ecosystem: correlations and comparisons of diversity indices. Ekológia (Bratislava), 36(4), 366–387. DOI: 10.1515/eko-2017-0029. Blinkova, O. & Ivanenko O. (2018). Communities of woody vegetation and wood destroying fungi in natural and semi-natural forests of Kyiv city, Ukraine. Central European Forestry Journal, 64, 55–66. DOI: 10.1515/forj-2017-0030. Blondel, J. & Cuvillier R. (1977). Unemethode simple etrapide pour decrier les habitats d’oiseaux: le

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Water Temperature Influence on Selected Properties of Surface River Water Throughout the Year (River Nitra)

Abstract

Vanková V., Petluš P.: Water temperature influence on selected properties of surface river water throughout the year (river Nitra). Ekológia (Bratislava), Vol. 33, No. 2, p. 151-159, 2014.

Assessment of chosen surface water properties was realised as a part of broader research on environmental aspects of urban environment. Analyses of selected physical and chemical water properties, oxygen and temperature regime, neutralisation capacity, selected nutrients and measurements of air temperature was done in monthly intervals during 2012 at three localities. Two of the assessed localities are at river Nitra: Nitra Communal Services and housing estate Chrenová I. The third locality is the oxbow lake of Malá Hangócka river at Nitra City Park. We have assessed the volume of oxygen concentration (O2, mg/l) and oxygen regime, phosphates (P-PO4 -3, mg/l), ammoniac nitrogen (N-NH4 +, mg/l), nitrites (N-NO2 -, mg/l), pH and water temperature (°C) from the collected samples. Out of these analyses the values of the above mentioned indicators, their annual fluctuation and water quality of observed localities were obtained. The influence of human activities on water properties and its quality was further assessed. Statistical methods such as two-factor dispersion analysis without replication and correlation coefficient were applied to validate the correlation of selected surface water properties, water and air temperature and to compare observed localities.

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Effects of Modifying Agents on the Dyeability of Cotton Fabric using Malachite Green Dye

Abstract

Changes in thermodynamic parameters as a result of modifying agents on dye uptake of cotton fabric using malachite green (MG) dye was investigated in this study. Five modifying agents {Acetic acid (CH3COOH), hydrated Sodium carbonate (Na2CO3.10H2O), Sodium Chloride (NaCl), Ammonium sulphate ((NH4)2SO4) and Hydrogen peroxide (H2O2)} were used on cotton fabric. The equilibrium exhaustions (%E) were determined before and after modification of the cotton fabric at different concentrations which were 88.24%, 80%, 77.14%, 65.10% and 30.88% for CH3COOH, NaCl, (NH4)2SO4, Na2CO3.10H2O and H2O2 respectively. The results also showed a correlation between the standard affinity(-Δμθ) of dye on cotton fabric and the equilibrium exhaustion. The values of entropy (ΔSθ) and enthalpy (ΔHθ) change revealed the feasibility (spontaneity) and exothermic nature of the reaction. The optimum parameters were attained in acidic solution (CH3COOH) at the highest temperature (70 °C) of dyeing as it showed the highest % efficiency of 88.24%. This work established that modification of cotton fabric with modifying agents is one of the best route to improve the affinity between dye and fabric as it reduces stress, amount of dyes wasted in dyeing, time required to achieve satisfactory results leading to a cost effective environmental friendly approach in the field of cotton dyeing.

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The effect of the selected remediation medium on the cadmium bioavailability in the selected ecosystem in the Southwestern locality of Slovakia

Abstract

Soil is a sensitive ecological factor. Biodegradable materials from the environment can also be used to deal with serious ecological problems. Soil affecting by remediation medium - garden compost - was analysed for toxic cadmium (Cd) in terms of environmental protection. The objective of this research was to analyse soil and compost at foothill locality of the Tribeč Mountains (Southwestern Slovakia) in the years 2015−2017 to determine Cd contents in soil and compost, pH and to assess Cd bioavailability. The analyses were carried out using the Atomic Absorption Spectrometry with seven-step Selective Sequential Extraction methods. The results obtained were evaluated statistically using the SAS 9.4 software method by Spearman’s correlation coefficient. The results showed that Cd contents in soil had reached 2.96 mg kg−1 and soil with compost (the ratio 1:1) 2.71 mg kg−1 dry matter. Cd contents in the soil exceeded maximum allowed limit of 196%. And deceased by 25% after adding compost. The pH in soil with compost varied from 6.78 to 7.98. The pH prevented the mobility of Cd about 8.3% in average. Statistical dependence was high, which was demonstrated for relationship between Cd in soil, pH and compost. Available Cd forms in soil were 53.3% and soil with compost were 45% in average. The garden compost as a remediation medium reduced Cd bioavailability.

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Trophic characteristics of Lymnaea stagnalis (Mollusca: Gastropoda: Lymnaeidae) in toxic environment

of the abundance distribution of the land snail Vallonia pulchella (Pulmonata, Valloniidae). Regulatory Mechanisms in Biosystems, 9(2), 198–202. DOI: 10.15421/021829. Lakin, G.V. (1990). Biometrics (in Russian) . Moskow: Vysshaya Shkila. Melchakov, Yu.L. (1989). Correlation of atmospheric and water migration with the biological cycle of heavy metals in the mountain-forest landscape (in Russian). Biological Science, 9, 28‒32. Morozov, N.P. (1983). Chemical elements in hydrobionts and food chains. Biogeochemistry of the ocean (in Russian

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