The content, composition, and properties of humus are the most important characteristics that reflect features modern soil formation, genesis evolution soils, their agrogenic transformation. main criteria for assessing fertility traditionally content reserves organic matter in soils. At same time, decrease is associated not so much with a total humus, but loss its labile forms, which determine ...

1. Amino acid metabolism was studied in control virgin rats, lactating rats and virgin rats protein-pair-fed with the lactating rats (high-protein virgin rats). 2. Urinary excretion of nitrogen and urea was higher in lactating than in control virgin rats, and in high-protein virgin rats it was higher than in lactating rats. 3. The activities of urea-cycle enzymes (units/g) were higher in high-p...

Successful afforestation has been practiced in South Africa for more than a century. Recently, however, problems with afforestation of pines have occurred in the northeastern part of the Eastern Cape Province. Rapid mortality of Pinus patula and P. elliottii have occurred when small container seedlings were planted on old-agricultural soils. Death would often occur within 5 months of planting. ...

The comparative analysis of different taxonomic groups of microorganisms isolated from dark chernozem soils under different agricultures (alfalfa, melilot, sainfoin, soybean, rapeseed) at Almaty region of Kazakhstan was conducted. It was shown that the greatest number of micromycetes was typical to the soil planted with alfalfa and canola. Species diversity of micromycetes markedly decreases as...

; Studies on the distribution of different fOrulS of sulphur in seven widely occurring soil series representing five great groups viz. Udorthents, Fluvaquents, Dystrochrepts, Hapludalfs and Hapludolls indicated that non sulphate-sulphur, mostly contributed to the total sulphur (86.7%) followed by organic-sulphur (10.0%) and sulphate-sulphur (3.3%). All forms of sulphur had significant positive ...

Abstract. The analysis of GSA for the stabilization soil samples is subject this research paper. In recent years, techniques have been effective in improving shear strength parameters poor soils. a naturally occurring substance that causes human health and environmental issues. Physical properties were calculated, including Atterberg's limits, compaction characteristics, characteristics virgin ...

Temporary polygyny (the presence of multiple queens) occurs in honeybee colonies when virgin queens (VQs) are reared for reproductive swarming or queen replacement. During these events, workers perform vibration signals on queen cells and emerged queens, and these signals may influence which VQ becomes the new laying queen of a colony. We examined the role of vibration signals during queen comp...

Gregory of Nyssa lauded his older sister Macrina as "the common glory of our family" and acclaimed her as "the great Macrina" who had achieved the highest summit of human virtue. Indeed, in two works, the Life of Macrina and The Dialogue on the Soul and the Resurrection, he portrayed her as the ideal Christian teacher and philosopher, seeking God with her whole heart and mind.' In these two wor...