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000888885 005__ 20210130011149.0
000888885 037__ $$aFZJ-2020-05290
000888885 041__ $$aEnglish
000888885 1001_ $$0P:(DE-Juel1)168421$$aDombinov, Vitalij$$b0$$eCorresponding author$$ufzj
000888885 245__ $$aFrom Lab to Field - Investigations of Phosphorus Availability from Sugarcane Bagasse Ash to Soybeans$$f2020-07-15 - 2020-11-11
000888885 260__ $$c2020
000888885 300__ $$a110
000888885 3367_ $$2DataCite$$aOutput Types/Dissertation
000888885 3367_ $$2ORCID$$aDISSERTATION
000888885 3367_ $$2BibTeX$$aPHDTHESIS
000888885 3367_ $$02$$2EndNote$$aThesis
000888885 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1608131328_21953
000888885 3367_ $$2DRIVER$$adoctoralThesis
000888885 500__ $$aThe research was conducted in the framework of the project ASHES and funded by the German Federal Ministry of Education and Research (BMBF, grand number 031A288).
000888885 502__ $$aDissertation, Rheinische friedrich-Wilhelms-Universität Bonn, 2020$$bDissertation$$cRheinische friedrich-Wilhelms-Universität Bonn$$d2020$$o2020-11-11
000888885 520__ $$aEvery year the Brazilian sugarcane industry generates up to 10 million tons (dry matter) of ash from the combustion of sugarcane bagasse, which is a fibrous plant material that remains after sugarcane juice extraction. Bagasse ash is alkaline and contains minerals, including phosphorus (P) and potassium (K). Bagasse ash as a P-fertilizer has been poorly investigated. The experiments conducted and presented in this dissertation were aimed at investigating the fertilization effects of bagasse and bagasse-based ashes following a “From Lab to Field” approach. Soybean (Glycine max) was chosen as a model plant because of its suitability for greenhouse and field experiments, relevance for the Brazilian economy and use as rotation crop after sugarcane harvest. The aims of the present study were i) to investigate the efficiency of bagasse ash as a fertilizer for soybeans, ii) to identify factors integral to its fertilization success, and iii) to analyse the potential of bagasse ash as an additive to conventional and organic fertilizers under field conditions. In greenhouse pot experiments on nutrient-poor substrate, soybeans fertilized with bagasseashes accumulated significantly less dry matter and took up less P and K than from triplesuperphosphate (TSP) and potassium sulphate. The fertilization effects of bagasse ashes were driven by the availability of P, a result supported by solubility analyses in various extraction solutions. The application of large dosages of ash produced comparable amounts of biomass as TSP-fertilized plants, but the uptake of P remained significantly lower than that from TSP. This is potentially related to suboptimal concentrations and ratios of minerals supplied by large dosages of ash. Co-combustion of bagasse with chicken manure, which is poor in Fe and Al but rich in alkali and alkaline earth metals, altered the physical and chemical composition of the ashes and their thermochemical products. The resulting increase in availability of P to soybeans appears to be due to the formation of Ca-alkali phosphates, as determined by X-ray diffraction analyses. Under greenhouse conditions in Oxisol soil, the P-fertilization effects of bagasse-based ash and its thermochemical products on soybean remained significantly lower than from TSP. This was probably due tofewer soluble P-forms in ash as compared to TSP, an increase in pH and suboptimal nutrient ratios and nutrient concentrations; all of which affected the ability of this fertilizer to meet the P demand for soybeans. Under field conditions (Goiânia, Brazil), co-fertilization of soybeans with bagasse ash and TSP (70% of P from bagasse ash) allowed a reduction in the P2O5 consumption from TSP by more than 50% and increased the grain yield by 11%. TSP-free fertilization of soybeans with 80 kg P2O5 in form of bagasse ash and cattle manure compost (50% of P from bagasse ash) increased the grain yield by 13%. Both increases are in comparison to control fertilization using TSP alone. Overall, fertilization effects of bagasse and bagasse-based ashes cannot compete with TSP. However, using bagasse ash as an additive to conventional and organic fertilizer has the potential to reduce the consumption of rock-P based fertilizer for soybeans in the field.
000888885 536__ $$0G:(DE-HGF)POF3-582$$a582 - Plant Science (POF3-582)$$cPOF3-582$$fPOF III$$x0
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000888885 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)168421$$aForschungszentrum Jülich$$b0$$kFZJ
000888885 9131_ $$0G:(DE-HGF)POF3-582$$1G:(DE-HGF)POF3-580$$2G:(DE-HGF)POF3-500$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bKey Technologies$$lKey Technologies for the Bioeconomy$$vPlant Science$$x0
000888885 9141_ $$y2020
000888885 920__ $$lyes
000888885 9201_ $$0I:(DE-Juel1)IBG-2-20101118$$kIBG-2$$lPflanzenwissenschaften$$x0
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000888885 980__ $$aI:(DE-Juel1)IBG-2-20101118
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