Nutrição do milho e da Brachiaria decumbens cultivados em consórcio em diferentes preparos do solo
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Data
2008-01-01
Autores
Cruz, Simério Carlos Silva [UNESP]
Pereira, Francisco Rafael da Silva [UNESP]
Bicudo, Silvio José [UNESP]
Albuquerque, Abel Washington de
Santos, José Roberto
Machado, Carla Gomes [UNESP]
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Editor
Editora da Universidade Estadual de Maringá (EDUEM)
Resumo
O objetivo deste trabalho foi avaliar sistemas de consorciação entre milho e Brachiaria decumbens e seus efeitos sobre a nutrição mineral das culturas. O experimento foi conduzido no ano agrícola de 2005, na Área Experimental do Campus Delza Gitaí, pertencente ao CECA-UFAL. Os tratamentos consistiram do cultivo de um híbrido de milho BRS 3150, nos sistemas: Preparo Convencional do Solo, Cultivo Mínimo e Semeadura Direta (BRS 3150 em consórcio com Brachiaria decumbens). O experimento obedeceu ao esquema de blocos casualisados com parcelas subdivididas em quatro repetições. Durante o período de florescimento da cultura do milho, foram coletadas folhas da base da espiga para análise nutricional. Foram realizadas coletas de material vegetal da Brachiaria decumbens em quatro épocas para determinação de massa seca; para análise nutricional, utilizou-se material vegetal proveniente da terceira coleta. Pôde-se observar que a presença da Brachiaria decumbens não interferiu na nutrição mineral da cultura do milho; o efeito residual da adubação realizada para cultura do milho beneficiou a Brachiaria decumbens, elevando seu valor nutritivo; a Brachiaria decumbens teve seu crescimento limitado, quando cultivada em consórcio, devido ao efeito do sombreamento proporcionado pela cultura do milho.
The objective of this research was to evaluate intercropping systems with maize and Brachiaria decumbens and your effects on the cultures mineral nutrition. The experiment was conducted in 2005, in the experimental area of Campus Delza Gitaí belonging to the CECA - UFAL. The treatments consisted of a BRS 3150 hybrid of maize, cultivated in the systems: Conventional Cropping, Minimum Cultivation and No-tillage (BRS 3150 intercropped with Brachiaria decumbens), the randomized block design was used, with subdivided splots and four replications. During maize flowering period leaves from the ear basis were collected for nutritional analysis. Samples of Brachiaria decumbens to evaluate dry matter accumulation were collected in four different times, the third collection of plant matter was used for nutritional analysis. The results analysis allowed concluding that the use of Brachiaria decumbens did not influence in maize mineral nutrition; the residual effect of fertilizer applied to maize favoured the Brachiaria decumbens increaseing your nutritive value; the Brachiaria decumbens had your growth limited when it was cultivated in intercropping due the shading effect occasioned for maize.
The objective of this research was to evaluate intercropping systems with maize and Brachiaria decumbens and your effects on the cultures mineral nutrition. The experiment was conducted in 2005, in the experimental area of Campus Delza Gitaí belonging to the CECA - UFAL. The treatments consisted of a BRS 3150 hybrid of maize, cultivated in the systems: Conventional Cropping, Minimum Cultivation and No-tillage (BRS 3150 intercropped with Brachiaria decumbens), the randomized block design was used, with subdivided splots and four replications. During maize flowering period leaves from the ear basis were collected for nutritional analysis. Samples of Brachiaria decumbens to evaluate dry matter accumulation were collected in four different times, the third collection of plant matter was used for nutritional analysis. The results analysis allowed concluding that the use of Brachiaria decumbens did not influence in maize mineral nutrition; the residual effect of fertilizer applied to maize favoured the Brachiaria decumbens increaseing your nutritive value; the Brachiaria decumbens had your growth limited when it was cultivated in intercropping due the shading effect occasioned for maize.
Descrição
Palavras-chave
teores de macronutrientes, massa seca, material vegetal, macronutrients levels, dry matter, plant matter
Como citar
Acta Scientiarum. Agronomy. Editora da Universidade Estadual de Maringá (UEM) - EDUEM, v. 30, p. 733-739, 2008.