Author:
Scherer H.W.,Metker D.J.,Welp G.
Abstract
We studied the long-term effect (about 45 years) of farmyard manure, sewage sludge and compost application in two increments on organic carbon (C<sub>org</sub>), the amount (C<sub>mic</sub>) and activity of the microbial biomass (soil respiration, dehydrogenase activity), total N content and N delivery of soils as compared to manuring with mineral fertilizers. The application of both increments of compost and the high sewage sludge application rate resulted in an increase in C<sub>org</sub> while soils treated with both compost application rates and the high farmyard manure application rate showed a significant increase in C<sub>mic</sub>. C<sub>mic</sub>/C<sub>org</sub> ranged between 1.7 and 3.3. Dehydrogenase activity and soil respiration were the greatest in the soil with the highest compost and farmyard manure application rates. Total soil N content was significantly higher in both compost treatments and in the treatment with the high sewage sludge application rate. This was accompanied by the highest N uptake of ryegrass.
Publisher
Czech Academy of Agricultural Sciences
Cited by
39 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献