Novel organomineral fertilizer and its effect on the growth and biomass production of maize.
Current studies have paid a significant amount of attention to solid organic wastes due to increasing amount and problems with their disposal. In the age of excessive use of mineral fertilizers and the depletion of natural resources, it is necessary to find sustainable ways of reusing and recycling solid organic wastes as they have highly valuable fertilizing potential. They are known as rich sources of micro and macronutrients. In addition, they include a large amount of organic matter suitable for farm composting and could improve the soil structure and crop production. The aim of this study was to produce organomineral fertilizers from food waste compost (FWC), poultry manure (PM), and spent mushroom compost (SMC) and evaluate them on maize crop. Three different formulations made of distinct proportions (50 % FWC- 25 % PM-25 % SMC, 25 % FWC-50 % PM-25 % SMC, and 25 % FWC-25 % PM-50 % SMC) were tested to evaluate differences in the physico-chemical and binding capacity for pellet formation. The results showed that, the greatest difference among the materials used in this study was found on pellet firmness and durability over time. The pellet resistance and durability test over time showed that 50% FWC-25% PM-25 % SMC was the mixture with the best binding capacity. An organomineral fertilizer C:N:P2O5:K2O (35-7-8-9) derived from 50 % FWC-25 % PM-25 % SMC and chemical fertilizers (urea, potassium chloride, and diammonium phosphate) was suitable for soil application. It produced comparable plant growth and biomass response as conventional fertilizer and improved soil pH. The residual effect of the organomineral and organic fertilizers was higher compared to chemical fertilizer treatment. They produced higher biomass, a significant advantage over chemical fertilizers.
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| Format: | info:eu-repo/semantics/bachelorThesis biblioteca |
| Language: | eng |
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Universidad EARTH
2019-12
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| Subjects: | ABONOS ORGANICOS, COMPOST, ENMIENDAS ORGANICAS, ZEA MAYS, MAIZ, BIOMASA, https://purl.org/pe-repo/ocde/ford#4.01.07, |
| Online Access: | https://repositorio.earth.ac.cr/handle/UEARTH/295 |
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