Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane

Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane

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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.–

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Main Authors: Reis Junior, Roberto dos Anjos, Monnerat, Pedro Henrique
Format: Digital revista
Language:eng
Published: Pesquisa Agropecuaria Brasileira 2003
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/6571
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spelling rev-pab-br-article-65712014-08-13T16:29:09Z Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane Estabelecimento de normas do Sistema Integrado de Diagnose e Recomendações (DRIS) para diagnose nutricional de cana-de-açucar Reis Junior, Roberto dos Anjos Monnerat, Pedro Henrique Saccharum officinarum; foliar nutrient content; plant analysis; nutritional status; productivity Saccharum officinarum; teor foliar de nutriente; análise vegetal; estado nutricional; produtividade 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.– Os objetivos deste trabalho foram estabelecer normas DRIS para a cultura da cana-de-açúcar, comparar médias de produtividade, médias de teores foliares de nutrientes e variâncias das razões entre nutrientes dos grupos de baixa e alta produtividade e comparar valores médios das razões selecionadas como normas DRIS dos grupos de baixa e alta produtividade. Amostras foliares (analisadas quanto a N, P, K, Ca, Mg, S, Cu, Mn e Zn) e respectivas produtividades foram coletadas em 126 lavouras comerciais, em Campos dos Goytacazes, RJ, e usadas para estabelecer as normas DRIS para a cana-de-açúcar. As médias de produtividade e de teores foliares não foram similares entre os grupos de baixa e alta produtividade. As razões entre variâncias dos grupos de alta e baixa produtividade foram diferentes. A maioria das razões entre nutrientes selecionadas como normas DRIS apresentaram médias estatisticamente diferentes entre os grupos de baixa e alta produtividade. Estes diferentes equilíbrios nutricionais entre os grupos de alta e baixa produtividade indicam que as normas DRIS estabelecidas neste trabalho são confiáveis. As normas DRIS obtidas com valores altos de razão entre variâncias dos grupos de alta e baixa produtividade e baixos coeficientes de variação oferecem maior segurança para avaliar o estado nutricional da cana-de-açúcar em relação aos micronutrientes. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2003-02-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/6571 Pesquisa Agropecuaria Brasileira; v.38, n.2, fev. 2003; 277-282 Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 277-282 1678-3921 0100-104x eng https://seer.sct.embrapa.br/index.php/pab/article/view/6571/3628
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language eng
format Digital
author Reis Junior, Roberto dos Anjos
Monnerat, Pedro Henrique
spellingShingle Reis Junior, Roberto dos Anjos
Monnerat, Pedro Henrique
Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane
author_facet Reis Junior, Roberto dos Anjos
Monnerat, Pedro Henrique
author_sort Reis Junior, Roberto dos Anjos
title Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane
title_short Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane
title_full Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane
title_fullStr Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane
title_full_unstemmed Norms establishment of the Diagnosis and Recommendation Integrated System (DRIS) for nutritional diagnosis of sugarcane
title_sort norms establishment of the diagnosis and recommendation integrated system (dris) for nutritional diagnosis of sugarcane
description 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.–
publisher Pesquisa Agropecuaria Brasileira
publishDate 2003
url https://seer.sct.embrapa.br/index.php/pab/article/view/6571
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AT reisjuniorrobertodosanjos estabelecimentodenormasdosistemaintegradodediagnoseerecomendacoesdrisparadiagnosenutricionaldecanadeacucar
AT monneratpedrohenrique estabelecimentodenormasdosistemaintegradodediagnoseerecomendacoesdrisparadiagnosenutricionaldecanadeacucar
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