Agrochemical properties of loamy sandy soddy-podzolic soil under fertilization with sewage sludge | Агрохимические свойства дерново-подзолистой супесчаной почвы при применении удобрений на основе осадка сточных вод
2011
Peskarev, A.A. | Yashin, I.M., Russian State Agrarian Univ., Moscow (Russian Federation) | Kasatikov, V.A., All-Russia Research and Development, Production and Technology Inst. of Organic Fertilizers and Peat, Vladimir Region (Russian Federation)
The influence of sewage sludge (SS) in the town of Vladimir on agrochemical soil properties and yield of white mustard was studied. There are given data of agrochemical analysis of the following types of agrochemical fertilizer: dehydrated fresh sewage sludge from sewage disposal plants (SS-I); a sludge subjected to natural fermentation for 10 months (SS-F); vermicompost from SS-I (VC-S) added with manure in a ratio 1:0.15. In 2006-2008 an experiment was carried out on soddy-podzolic soil (the Vladimir region) using SS-I and SS-F, VC-S, and the same fertilizers on the background of lime application. Unbalance of all SS is observed in the content of phosphor, VC-S having the best agrochemical and physical parameters, possessing high microbiological activity. The positive influence of SS and VC-S on the soil properties has been found: hydrolytic acidity reduces, the base saturation degree increases. The content of organic matter increases from 0.94 (without fertilizer) to 1.11% (VC-S), and mobile phosphor on average by 80%. The yield of mustard grows in all variants of the experiment.
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