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Bulgarian Journal of Soil Science, Agrochemistry and Ecology
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Comparative Effect of Using Poultry Manure and Sewage Sludge as Soil Improvers
R. Toncheva, H. Pchelarova, E. Zlatareva
Abstract: The aim of the study was to compare the effect of the use of sewage sludge for waste water (WWTP) and poultry manure as soil improvers in agriculture.
Greenhouse pot experiments were conducted with Haplic Luvisols and Haplic Vertisols. The experiment was carrying out with 1 kg soil per pot in three replicates. Treatments with sewage sludge and poultry manure are: control (without soil ameliorative substance (AS), 3, 5, 10 and 15% AS of soil mass. The culture used as indicators in all greenhouse experiment was maize. Statistical analysis of yield data was made.
The conducted statistical analysis of data obtained from corn grown on the two soils under conditions of pot experiments show that the main influencing the yield factor is the fertilization rate, followed by the type of used fertilizer and soil kind.
The variation in yield, depending on the fertilizing rate, was 45.03% of the total variation, the type of fertilizer – 6.10% and the kind soil – 5.65%. The crop response to fertilization was highest for treatments with poultry manure.
To obtain more accurate results, it is necessary to continue research under field conditions.
Keywords: poultry manure; sewage sludge; soil; soil improvers
Date published: 2017-02-13
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