Data/hora: 16/06/2024 18:35:17

Biblioteca(s): 	Embrapa Arroz e Feijão; Embrapa Solos.	
Data corrente: 	11/10/2016	
Data da última atualização: 	07/03/2017	
Autoria: 	CARVALHO, M. da C. S.; NASCENTE, A. S.; TEIXEIRA, P. C.	
Afiliação: 	MARIA DA CONCEICAO SANTANA CARVALHO, CNPAF; ADRIANO STEPHAN NASCENTE, CNPAF; PAULO CESAR TEIXEIRA, CNPS.	
Título: 	Fertilizers with coated urea in upland rice production and nitrogen apparent recovery.	
Ano de publicação: 	2016	
Fonte/Imprenta: 	Bioscience Journal, Uberlândia, v. 32, n. 5, p. 1155-1164, Sept./Oct. 2016.	
Idioma: 	Inglês	
Conteúdo: 	Urea is the most used N fertilizer for upland rice, however, a great percentage of N loss can occur with the use of this fertilizer. The use of products that provide reduction of N loss for urea fertilizers can contribute to increase N use efficiency. The objective of this study was to determine the effect of N rates applied in the form of coated urea in the content and accumulation of N in dry biomass, apparent recovery of nitrogen and grain yield of upland rice. The experimental design was a randomized complete blocks arranged in a 4 x 3 + 1 factorial scheme. The treatments consisted of four sources of N fertilizer [1. Common urea; 2. Polymer-coated urea for slow release of N (PCU); 3. urea with the urease inhibitor N-(n-Butyl) thiophosphoric triamide (NBPT); and 4. urea coated with copper sulfate and boric acid as urease inhibitors (UCCB)], with three fertilization rates (30, 60 and 90 kg ha-1 of N). In addition, we included a control treatment without N application. Coated urea did not provide increases in rice grain yield in relation to common urea. The increasing amount of N resulted in significant increases in rice grain yield (from 3217 to 5548 kg ha-1, 2010/11, and from 3392 to 4560 kg ha-1, 2011/12). The apparent nitrogen recovery rate decreased with the increase in N applied doses.	
Thesagro: 	Arroz; Fertilizante; Nitrogênio; Oryza sativa; Ureia.	
Thesaurus Nal: 	Nitrogen fertilizers; Polymer-coated urea; Rice; Slow-release fertilizers; Urease inhibitors.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/148596/1/CNPAF-2016-bioscience.pdf	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (34503-1) - UPC - AP - DD - 2016 -  - 2016 - DIS
CNPS - (19365-1) - UPC - AP - DD -  -  - 2016.00259 - DIS