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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  The use of DRIS for nutritional diagnosis in oil palm in the State of Pará.
Autores:  MATOS, G. S. B. de
FERNANDES, A. R.
WADT, P. G. S.
PINA, A. J. de A.
FRANZINI, V. I.
RAMOS, H. M. N.
Data:  2017-05-25
Ano:  2017
Palavras-chave:  Óleo de palma
Dendê
Planta Oleaginosa
Nutrição vegetal
Adubação
Elaeis guineensis
Plant nutrition
Nutrición de las plantas
Resumo:  The oil palm crop has expanded significantly in the state of Pará, which has not been followed in a proportional manner by studies aiming at increasing yield through plant nutrition. The objective of this study was to evaluate general and specific norms of the Diagnosis and Recommendation Integrated System (DRIS) for genetic materials of oil palm (African and interspecific hybrid) at two ages (young and adult plants) and evaluate possible deficiencies in fertilization and soil correction practices. The DRIS norms were composed of means, standard deviations, and coefficients of variation of bivariate, specific, and general relationships among nutrients of 144 leaf samples. The DRIS norms specific for genetic material did not differ from the general norms; however, a large number of differences were found between specific bivariate relationships for age groups, among themselves, and in relation to the general norms. The regression analysis between the nutritional balance index and yield were better explained when age groups were discriminated. In the young plants, the number of cases of stands with deficiencies followed the order Ca > Fe > B > S > Mn > K > Mg = Cu > Zn > N > P; and for adults, this order was Ca > Mn > Zn > Fe > S = B > N = Cu > K > Mg > P. The DRIS norms can be utilized in diagnostics regardless of genetic material; however, they must be specified for the age of the plant. Most of the stands showed deficiency in Ca and micronutrients, coinciding with the least used nutrients in oil palm crops in the state of Pará, as well as emphasizing the need for soil liming.

2017
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  1806-9657

53777

http://www.alice.cnptia.embrapa.br/handle/doc/1070079

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/160237/1/0100-0683-rbcs-18069657rbcs20150466.pdf
Editor:  Revista Brasileira de Ciência do Solo, v. 41, p. 1-15, 2017.
Relação:  Embrapa Amazônia Oriental - Artigo em periódico indexado (ALICE)
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