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Biblioteca(s):  Embrapa Agropecuária Oeste.
Data corrente:  26/03/2001
Data da última atualização:  13/01/2011
Autoria:  COELHO, A. M.
Título:  Irrigated corn yeld as related to spatial variability of selected soilproperties in a silty clay loam and sandy soils.
Ano de publicação:  2000
Fonte/Imprenta:  2000.
Páginas:  175 f.
Idioma:  Inglês
Notas:  Dissertation (Doctoral of Philosophy - Soil and Water Science) - University of Nebraska, Lincoln.
Conteúdo:  Spatial variability of soil physical and chemical properties and its relationships with corn growth and development was assessed in a sandy soil cultivated with corn in central Nebraska. Field studies involved extensive soil sampling, measurement of plant population, leaf tissue composition, and grain yields during the 1997 and 1998 growing seasons. Classical statistics, geostatistics, factor analysis, and multiple linear regressions were used as the principal techniques to explore soil and crop variability, the nature of interactions that might affect crop yield, and to classify and map status of soil properties in the field. Spatial distribuion of grain yields was similar in both years. Grain yields ranged from 11 to 14 Mg ha-1 and averaged 12,5 Mg ha-1. Plant populations varied from 62 to 73 thousand plants per hectare across the field but were not consistently related to grain yield. Factor analysis was found a useful tool in analyzing associations of systematic soil variation within the experimental field. Most of the soil variation as related to crop growth was describe by five factors, which collectively explained 85% of the total soil variability. Regression models based on these factors were associated with 50% of the corn yield variation. The results suggest that soil physical-chemical factor, as related to organic matter, texture, bulk density, and pH has a large effect on the variation of corn yield. Soil inherent fertility and fertilizers factors had little rela... Mostrar Tudo
Palavras-Chave:  Maize; Soil chemicophysical properties.
Thesagro:  Irrigação; Milho; Propriedade Físico-Química; Solo; Zea Mays.
Thesaurus Nal:  irrigation.
Categoria do assunto:  --
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Agropecuária Oeste (CPAO)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CPAO16344 - 1ADPTS - PPT 14/0000.00038
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1.Imagem marcado/desmarcadoALBUQUERQUE, J. A. S. de; MOUCO, M. A.; MEDINA, V. D.; SANTOS, C. R. dos; TAVARES, S. C. C. de H. O cultivo da mangueira irrigada no Semi-Árido brasileiro. Petrolina: Embrapa Semi-Arido: VALEXPORT, 1999. 77 p. il.
Tipo: Autoria/Organização/Edição de Livros
Biblioteca(s): Embrapa Semiárido.
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