The condition for improving the properties of soil as well as the yield and quality of plants, as a result of fertilization with compost, is to use a stable and mature material. The degree of compost maturity can be evaluated, among others, basing on the content and properties of humus compounds. The aim of the research was to assess the changes in the content of ash, oxidizable total organic carbon as well as carbon of humus compounds in sewage sludge composted with a wheat straw addition. In addition, the aim of this work was to determine (basing on the obtained results) the degree of maturity of the produced compost. Mineralization of organic matter, which occurred during the composting process, resulted in lowering both the organic carbon content and the value of the C: N ratio, but increasing the ash content. Moreover, an increase in the content of carbon extracted from the compost with the mixture of 0,1 mol ∙ dm-3 Na4P2O7 + 0,1 mol ∙ dm-3 NaOH, and a decrease in the content of carbon extracted with distilled water were stated. The results of the carried out experiment indicated that the obtained compost was mature. ...
The influence of fertilization with the compost prepared from treated sewage sludge with bark additive and mulching with the fresh forest ectohumus on the soil conditions, chosen parameters of one-year old European beech seedlings growth as well as the occurrence of soil mites (Acari) with special emphasis of oribatid mites (Oribatida) was investigated in the paper. The trials were carried out in 2008 at forest nursery Białe Błota (Forest District Bydgoszcz) on the rusty soil. The whole area of the experiment was irrigated with the use of stationary sprinkling machine. The soil was characterized by the pH in H2O - 7,41 and that in 1M KCl - 6,88, as well as the low content of available potassium (6,8-7,3 mg K2O 100g-1 of soil) and available phosphorus (8,0 -8,5 mg P2O5 100g-1 of soil). European beech seedlings on plots fertilized with the compost were significantly higher than those grown on plots with mineral fertilization. Influence of mulching - conducted in September - was insignificant on both the studied parameters of one-year old European beech seedlings growth. After the measure of mulching on the adequate plots, the density of mites, especially saprophage oribatid mites. ...
Most of used mineral and organic sorbents are hazardous waste and, therefore, in accordance with actual law regulations must be converted thermally or deposited in the special landfill for hazardous waste. The optimal solution would be sorption materials that could be used repeatedly, without the need for costly and cumbersome lanfilling. Sorbents, which due to their properties could be used repeatedly, are MSW composts generated from mixed or only organic municipal waste. In this study we have investigated the rate of degradation of motor oil on MSW waste composts with microflora pre-adapted for use of oil products as source of carbon. Comparison of degradation efficiency, was calculated in comparison to the commercial sorbents. During the experiment the total amount of synthetic motor oil and individual n-alkanes with carbon chain length from C22 to C40. During the experiment, there were observed more intensive oil degradation processes on waste composts in comparison to commercial sorbents. Microflora which use n-alkanes as a carbon source, ensured quick (noted after the first month of the experiment), reduction of the amount of hydrocarbons contamination in the samples, and thus the possibility of re-use of compost as a sorbent. The observed rapid degradation process, indicates the direction ...
This article is focused on the problematics of compost oversize fraction composition. The main aim was to determine the ratio of woodchips in oversize fraction of sieved compost for its further energy utilization. Ten compost oversize fraction samples of the weight of 100 kg (each sample) were collected at Central Compost Plant Brno in the period from 10.11.2014 to 20.3.2015. The samples were manually sorted to four fractions: 1) soil, 2) wood, 3) minerals, 4) other parts. The fraction analysis revealed that more than 70% of oversize compost fraction consist of soil while the ratio of woodchips is less than 14% only. The ratio of minerals and other parts is less than 10% or 5% respectively. ...
This study examined the effect of fertilisation with compost prepared from hygienised sludge with an addition of pine-tree bark and mulching with fresh forest ectohumus on selected growth parameters in two- and three-year seedlings of common beech and the occurrence of mites (Acari) in soil. The experiment was carried out in 2009-2010 in the Białe Błota forest nursery (Bydgoszcz Forest District) on proper rusty soil. The entire area of the experiment was irrigated with a stationary sprinkler. The beech seedlings on the plots where compost had been used as fertiliser were significantly taller than those growing on the plots where mineral fertilisers had been applied. Mulching increased the height of the seedlings significantly only in the last, third year of the study. The tallest three-year-old seedlings were found on the plots in which both of the tested procedures had been carried out. Neither of the factors under study had a significant effect on the diameter of the root neck in the second year of the nursery cultivation, but they increased it significantly in the third year. Fertilisation with compost with an addition of pine-tree bark increased the number of leaves per plant and the leaf area in two- and three-year-old ...
In this research, it was aimed to determine the amount of compost obtained from organic kitchen waste in Isparta province and the resulting economic loss when these wastes were not recycled as compost. Composting of organic kitchen wastes collected from the selected households was carried out in a home composter in the Laboratory of Composting and Biogas, Department of Agricultural Machinery and Technology Engineering, Süleyman Demirel University. The results showed that the concentrations of N, P2O5, K2O, MgO, and CaO of the finished compost were determined as 1.73%, 1.00%, 1.91%, 1.00%, and 3.72%, respectively. Results revealed that kitchen organic waste corresponding to 0.66 kg N, 0.38 kg P2O5, 0.73 kg K2O, 0.38 kg MgO, and 1.41 kg CaO kitchen waste per household per year was wasted without utilization. In the study, the economic value of the wastes when not recycled as compost was determined as 54658$, 29389$, and 111237$ per year corresponding urea, triple superphosphate, and potassium sulphate, respectively based on the commercial fertilizer price. It was determined that compost obtained from organic kitchen wastes was found to be 386164$ per year when economic value was calculated directly as compost rather than as equivalent commercial fertilizer. ...
In this study, it was aimed to compare the economic aspect of different applications of composts obtained from solid wastes of rose oil processing (RC) applications in organic apple production. The data used in the study were obtained from the experiments carried out in Egirdir Fruit Research Institute of Food, Agriculture and Livestock Ministry, Turkey. The trial was carried out with a total of 6 applications consisting of 5 different nutritional applications (RC, ERC (50%) (half dosage of the enriched RC, ERC (100%) (full dosage of the enriched RC, AB (azotobacter), and ST (standard application: 50% commercial solid organic manure +50% commercial liquid manure)) and 1 control (no nutrients applications). According to the results of the research, it was determined that apple production in all treatments was higher than control application. The result showed that the highest yield was determined for ERC (100%). The production costs per decare of the organic production in all treatments were found to be higher than the control application. Production cost was 854.97 USD da-1 in control application, while it varied between 914.61 USD da-1 and 984.79 USD da-1 in all treatments. When a comparison was made in terms of net profit, it was determined ...
