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- W2783756329 abstract "The presence of aluminum in the soil is one among the several existent problems that harm the growth, development and productivity in commercial cultures as soy and wheat principally when water deficit, once there is minor surface of roots for the absorption of water. Like this the influence of the use of the plaster was analyzed in the chemical characteristics of a âLatossolo vermelho eutrofArricoâ of loamy texture for the wheat cultures and soy, under system of direct planting. It took place collections of soil samples to the six and 12 months after application 0, 1, 2, 3, 4 e 5 t ha-1 of the gypsum to evaluate the tenors of Ca, Mg, K, exchangeable Al, pH, SB, V%, m% and tenor of S in the soil. For the wheat cultures and soy they were appraised the tenors of Ca, Mg, K, S, and Al in the tissue, mass of 1000 grains and productivity. The use of gypsum increased the tenors of Ca and S and it reduced Al s tenors, besides leaching Mg and K in the soil, increasing SB and V% in the deepest layers. In the tissue increased Ca and Mg for the soy and it reduced in the wheat, it increased the tenor of S in both cultures and K increased in a quadratic way for the culture of the soy. The found results show that the use of the plaster provided mobility of K+ and Mg2+ up to 40 cm of depth. The use of up to 5 t ha-1 of gypsum they resulted in increase of the tenors of Ca2+ and SO42 - in depth until one year after the application and the dose of 3 t ha-1 it provided larger reduction of exchangeable Al and also of the saturation for Al for âLatossolo vermelho eutrofArricoâ of loamy texture. In exchangeable Al s presence the use of the gypsum implicated in increase of the wheat productivity but it didn t influence the productivity of the soy%%%%A presenAa de alumAnio no solo A um entre os diversos fatores existentes que prejudicam o crescimento, desenvolvimento e produtividade de culturas comerciais como soja e trigo principalmente quando ocorre dAficit hAdrico, uma vez que hA menor superfAcie de raAzes para a absorAAo de Agua e nutrientes. Este trabalho avaliou a influAncia do uso do gesso nas caracterAsticas quAmicas de um Latossolo Vermelho eutrofArrico de textura argilosa para as culturas de trigo e soja, sob sistema de plantio direto. Realizou-se coletas de amostras de solo aos seis e 12 meses apAs aplicaAAo superficial de 0, 1, 2, 3, 4 e t ha-1 de gesso para avaliar os teores de Ca, Mg, K, Al trocAveis, pH, SB, V%, m% e teor de S no solo. Para as culturas de trigo e soja foram avaliados os teores de Ca, Mg, K, S, e Al no tecido foliar, massa de 1000 grAos e produtividade. O uso de gesso aumentou os teores de Ca e S e reduziu os teores de Al, alAm de lixiviar Mg e K no solo, aumentando a SB e V% nas camadas mais profundas. No tecido foliar aumentou Ca e Mg para a soja e reduziu no trigo, aumentou o teor de S em ambas culturas e o K aumentou de forma quadrAtica para a cultura da soja. Os resultados encontrados mostram que o uso do gesso proporcionou mobilidade de K+ e Mg2+ atA 40 cm de profundidade. O uso de atA 5000 kg ha-1 de…" @default.
- W2783756329 created "2018-01-26" @default.
- W2783756329 creator A5023799010 @default.
- W2783756329 date "2008-03-23" @default.
- W2783756329 modified "2023-09-28" @default.
- W2783756329 title "Atributos quÃmicos de um latossolo vermelho eutrofÃrrico submetido a gessagem e cultivado com trigo e soja em semeadura direta" @default.
- W2783756329 hasPublicationYear "2008" @default.
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