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Ministério Da Educação Universidade Federal Rural Da Amazônia - Ufra Programa De Pós Graduação Em Agronomia
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pedroso, Augusto José Silva |
| Copyright Year | 2011 |
| Abstract | The emerging demand for a decrease in dependence on mineral fertilizers and the need for the development of sustainable agriculture points to the use of microorganisms as a viable alternative to the producer. The objective was to select potential growth promoters and inoculation method of emerald grass plants comparing them with mineral fertilization. In the first assay, nine microorganisms (Pseudomonas fluorescens (BRM32111), Burkholderia pyrrocinia (BRM32113), Pseudoruegeria sabulilitoris strain GJMS-35 (R-92), Bacillus thuringiensis YBT-1518 (R-61) and Bacillus thuringiensis YBT-1518 (R-58), Trichoderma asperellum (UFRA-T.06), T. asperellum (UFRA-T.09), T. asperellum (UFRA-T.12) and T. asperellum (UFRA-T.52) inoculation methods (irrigation and immersion). The experimental design was completely randomized in a factorial arrangement of 8x2 (control / non-inoculated, inoculated with P. fluorescens (BRM32111), inoculated with B. pyrrocinia (BRM32113) inoculated with P. sabulilitoris strain GJMS-35 (R-92) with B. thuringiensis YBT-1518 (R-61), inoculated with B. thuringiensis YBT-1518 (R-58), inoculated with mix composed of P. fluorescens (BRM32111) + B. pyrrocinia (BRM32113) and inoculated with mixtures of T. asperellum (UFRA-T.06, UFRA-T.09, UFRA-T.12, and UFRA-T.52) in two application, irrigation and immersion methods), with four replicates, totaling 64 experimental units. In the second trial, the performance of the best method and the best microorganism in response to the application of mineral fertilization in a completely randomized design in a 4x2 factorial scheme (limestone (without NPK), limestone + NPK (urea, triple superphosphate and potassium chloride), NP n K (urea, Araxá phosphate and potassium chloride) and substrate (soil without NPK / without liming), with and without inoculation) with five replicates. In the first trial, the irrigation application method, independent of the isolate, provided a 65% increase in total dry matter, whereas by immersion the increase was 35% in relation to the control. Analysis of main components reveals that the root dry matter and plant height variables were sufficient to explain the highest percentage of variation of the data. Higher increases were achieved by B. pyrrocinia (BRM32113), with gains of 156% and 92% in root dry matter and plant height, respectively, in relation to the control. In the second trial, better results of height growth, root dry matter, green cover area and accumulation of leaf and root nutrients were achieved in the absence of fertilization. Plants inoculated by irrigation with B. pyrrocinia (BRS3211) and cultivated in substrate had increases of 78% in MSR and 65% in AP. Significant increases were also achieved by inoculation combined with mineral fertilization. The rhizobacteria B. pyrrocinia (BRS3211) proved to be competent in inducing the growth of the emerald grass plant and could be inserted into an ecologically sustainable nutritional management program with potential for commercial use. Key-words: Rhizobacteria. Method of inoculation. Sustainable development. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://repositorio.ufra.edu.br/jspui/bitstream/123456789/783/1/ESTADO%20NUTRICIONAL%20E%20PRODUTIVIDADE%20DE%20A%C3%87AIZEIRO%20FERTIRRIGADO.pdf |
| Alternate Webpage(s) | http://repositorio.ufra.edu.br/jspui/bitstream/123456789/717/1/Microrganismos%20potenciais%20e%20incremento%20de%20biomassa%20em%20grama%20esmeralda.o.pdf |
| Alternate Webpage(s) | https://ainfo.cnptia.embrapa.br/digital/bitstream/item/59447/1/WalmirDissFinal.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
