Nutricional analysis of maize and Brachiaria decumbens cultivated in intercropping system in different soil tillages/Nutricao do milho e da Brachiaria decumbens cultivados em consorcio em diferentes preparos do solo
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 Gitai" belonging to the "CECA - UFAL". The...
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Veröffentlicht in: | Acta scientiarum. Agronomy 2008-10, Vol.30 (4), p.733 |
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Format: | Artikel |
Sprache: | por |
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Zusammenfassung: | 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 Gitai" 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. Key words: macronutrients levels, dry matter, plant matter. O objetivo deste trabalho foi avaliar sistemas de consorciacao entre milho e Brachiaria decumbens e seus efeitos sobre a nutricao mineral das culturas. O experimento foi conduzido no ano agricola de 2005, na Area Experimental do Campus Delza Gitai, pertencente ao CECA-UFAL. Os tratamentos consistiram do cultivo de um hibrido de milho BRS 3150, nos sistemas: Preparo Convencional do Solo, Cultivo Minimo e Semeadura Direta (BRS 3150 em consorcio com Brachiaria decumbens). O experimento obedeceu ao esquema de blocos casualisados com parcelas subdivididas em quatro repeticoes. Durante o periodo de florescimento da cultura do milho, foram coletadas folhas da base da espiga para analise nutricional. Foram realizadas coletas de material vegetal da Brachiaria decumbens em quatro epocas para determinacao de massa seca; para analise nutricional, utilizou-se material vegetal proveniente da terceira coleta. Pode-se observar que a presenca da Brachiaria decumbens nao interferiu na nutricao mineral da cultura do milho; o efeito residual da adubacao realizada para cultura do milho beneficiou a Brachiaria decumbens, elevando seu valor nutritivo; a Brachiaria decumbens teve seu crescimento limitado, quando cultivada em consorcio, dev |
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ISSN: | 1679-9275 |