Chemical attributes of soil and dry mass accumulation of maize fertilized with cassava wastewater
The aim of this study was to evaluate chemical attributes alterations of a clay-loam textured soil and dry mass accumulation of maize submitted to application of cassava wastewater doses in three assessment periods. The experiment was conducted under greenhouse using a completely randomized experime...
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Published in | Engenharia agrícola Vol. 35; no. 3; pp. 458 - 469 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Sociedade Brasileira de Engenharia Agrícola
01.06.2015
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Subjects | |
Online Access | Get full text |
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Summary: | The aim of this study was to evaluate chemical attributes alterations of a clay-loam textured soil and dry mass accumulation of maize submitted to application of cassava wastewater doses in three assessment periods. The experiment was conducted under greenhouse using a completely randomized experimental design in a factorial 5 × 3, with four replicates. The analyzed factors of research were doses of cassava wastewater (0; 12.6; 25.2; 50.4; 75.6 m3 ha-1) andassessment periods (20, 40 and 52 days after germination). The following parameters were determined: electric conductivity of soil saturation extract, pH in water, content of available P, content of exchangeable K+, Ca2+, Mg2+ and Na+ of soil, dry mass of leaves and stem. The application of cassava wastewater on soil enables increase of pH, electric conductivity of saturation extract, contents of available P, contents of exchangeable K+ and Na+ and dry mass of leaves and stem. However, only pH and content of exchangeable K+ of soil, the electric conductivity of saturation extract and dry mass of leaves and stem are influenced by assessment period.
O objetivo deste trabalho foi avaliar as alterações dos atributos químicos de um solo de textura franco-argilosa e o acúmulo de matéria seca do milho submetido à aplicação de doses de manipueira em três épocas de avaliação. O experimento foi conduzido em casa de vegetação utilizando delineamento experimental inteiramente casualizado, em esquema fatorial 5 × 3, com quatro repetições. Os fatores de estudo da pesquisa foram: doses de manipueira (0; 12,6; 25,2; 50,4 e 75,6 m3 ha-1) eépocas de avaliação (20; 40 e 52 dias após a germinação). Foram determinados os seguintes parâmetros: condutividade elétrica do extrato de saturação do solo, pH em água, teor de P disponível, teores de K+, Ca2+, Mg2+ e Na+ trocáveis do solo e massa seca de folhas e de colmo. A aplicação de manipueira no solo propicia aumento do pH, da condutividade elétrica do extrato de saturação, do teor de P disponível, dos teores de K+ e Na+ trocáveis, e da massa seca das folhas e colmo; no entanto, apenas o pH e o teor de K+ trocável do solo, a condutividade elétrica do extrato de saturação e a massa seca das folhas e do colmo são influenciados pela época de avaliação. |
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ISSN: | 0100-6916 0100-6916 |
DOI: | 10.1590/1809-4430-Eng.Agric.v35n3p458-469/2015 |