Data/hora: 17/06/2024 01:04:31

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)

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CNPAF - (34503-1) - UPC - AP - DD - 2016 -  - 2016 - DIS
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