Macronutrient rates and multifunctional microorganisms in a tropical flooded rice crop.

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dc.contributorADRIANO STEPHAN NASCENTE, CNPAF; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; ANNA CRISTINA LANNA, CNPAF.
dc.creatorNASCENTE, A. S.
dc.creatorFILIPPI, M. C. C. de
dc.creatorLANNA, A. C.
dc.date2020-10-27T09:12:52Z
dc.date2020-10-27T09:12:52Z
dc.date2020-10-26
dc.date2020
dc.date.accessioned2026-07-01T00:05:39Z
dc.descriptionTropical flooded rice production systems require a high input of fertilizers and chemical defensive. The use of plant growth-promoting rhizobacteria (PGPR), a sustainable component of this system, can increase nutrient-use efficiency and lead to significant increases in the grain yield of tropical flooded rice crop. This study aimed to determine the effect of the microorganism BRM 32110 (Bacillus thuringiensis) in combination with nitrogen (N), phosphorus (P) and potassium (K) application rates on the physiological and agronomic performance of tropical flooded rice plants. Trials were performed in the 2016/2017 growing season in Formoso do Araguaia, a city in Tocantins state, Brazil. Three independent experiments (E1, E2, and E3) were performed in a randomized block design in a 4 x 2 factorial scheme with three replications. E1 comprised four N application rates (0, 40, 80 and 120 kg N ha-1) with and without the addition of BRM 32110, E2 comprised four P2O5 application rates (0, 40, 80 and 120 kg P2O5 ha-1) with or without BRM 32110, and E3 comprised four K2O application rates (0, 20, 40 and 60 kg K2O ha-1) with and without BRM 32110. In fertile soil, there were no interactions between the rhizobacterium BRM 32110 and the N, P or K application rates. BRM 32110 improved nutrient uptake and, on average, increased shoot dry matter by 8%, photosynthesis rate by 14% and grain yield by 11% in the flooded rice plants. Our results suggest that the use of multifunctional microorganisms is a good strategy for improving flooded rice grain yield sustainably.
dc.identifierRevista Caatinga, v. 33, n. 4, p. 898-907, out./dez. 2020.
dc.identifier0100-316X
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1125853
dc.identifierhttp://dx.doi.org/10.1590/1983-21252020v33n404rc
dc.identifier.urihttp://hdl.handle.net/123456789/397215
dc.languageeng
dc.rightsopenAccess
dc.subjectRizobacteria
dc.subjectArroz
dc.subjectOryza Sativa
dc.subjectBacillus Thuringiensis
dc.subjectDesenvolvimento Sustentável
dc.subjectMacroelemento
dc.subjectMicrorganismo
dc.subjectRice
dc.subjectPlant growth-promoting rhizobacteria
dc.subjectPhysiological regulation
dc.subjectSustainable development
dc.subjectMicroorganisms
dc.titleMacronutrient rates and multifunctional microorganisms in a tropical flooded rice crop.
dc.typeArtigo de periódico

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