Data/hora: 21/06/2024 10:44:40

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 26/10/2020
Data da última atualização: | 26/10/2020
Autoria: | NASCENTE, A. S.; FILIPPI, M. C. C. de; LANNA, A. C.
Afiliação: | ADRIANO STEPHAN NASCENTE, CNPAF; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; ANNA CRISTINA LANNA, CNPAF.
Título: | Macronutrient rates and multifunctional microorganisms in a tropical flooded rice crop.
Ano de publicação: | 2020
Fonte/Imprenta: | Revista Caatinga, v. 33, n. 4, p. 898-907, out./dez. 2020.
ISSN: | 0100-316X
DOI: | http://dx.doi.org/10.1590/1983-21252020v33n404rc
Idioma: | Inglês
Conteúdo: | Tropical 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.
Palavras-Chave: | Rizobacteria.
Thesagro: | Arroz; Bacillus Thuringiensis; Desenvolvimento Sustentável; Macroelemento; Microrganismo; Oryza Sativa.
Thesaurus Nal: | Microorganisms; Physiological regulation; Plant growth-promoting rhizobacteria; Rice; Sustainable development.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/217008/1/CNPAF-2020-RevistaCaatinga.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (35929-1) - UPC - AP - PP - 2020 -  - 2020 - DIS