Data/hora: 23/06/2024 09:51:09

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 22/04/2003
Data da última atualização: | 03/10/2018
Autoria: | REIS JUNIOR, R. dos A.; MONNERAT, P. H.
Afiliação: | Roberto dos Anjos Reis Junior, Fundação Chapadão; Pedro Henrique Monnerat, Universidade Estadual do Norte Fluminense - Uenf/Centro de Ciências e Tecnologias Agropecuárias.
Título: | Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane.
Ano de publicação: | 2003
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 38, n. 2, p. 277-282, fev. 2003
Idioma: | Inglês
Notas: | Título em português: Estabelecimento de normas do Sistema Integrado de Diagnose e Recomendação (DRIS) para a diagnose nutricional da cana-de-açúcar.
Conteúdo: | The objectives of this study were to establish DRIS norms for sugarcane crop, to compare mean yield, foliar nutrient contents and variance of nutrient ratios of low- and high-yielding groups and to compare mean values of nutrient ratios selected as the DRIS norms of low- and high-yielding groups. Leaf samples (analyzed for N, P, K, Ca, Mg, S, Cu, Mn and Zn contents) and respective yields were collected in 126 commercial sugarcane fields in Rio de Janeiro State, Brazil and used to establish DRIS norms for sugarcane. Nearly all nutrient ratios selected as DRIS norms (77.8%) showed statistical differences between mean values of the low- and high-yielding groups. These different nutritional balances between the low- and high-yielding groups indicate that the DRIS norms developed in this paper are reliable. The DRIS norms for micronutrients with high S²l /S²h ratio and low coefficient of variation found can provide more security to evaluate the micronutrient status of sugarcane.
Palavras-Chave: | análise vegetal; foliar nutrient content; plant analysis; productivity; teor foliar de nutriente.
Thesagro: | Estado Nutricional; Produtividade; Saccharum Officinarum.
Thesaurus Nal: | nutritional status.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/24399/1/277.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (24399-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS