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Scientia Agricola
Article . 2001
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Saturação por bases e híbridos de milho sob sistema plantio direto

Authors: Prado, Renato De Mello;

Saturação por bases e híbridos de milho sob sistema plantio direto

Abstract

O conhecimento dos híbridos adaptados a cada condição de reação do solo em sistema plantio direto é de significativa importância técnica. Para avaliar o comportamento de híbridos de milho sob sistema plantio direto, quanto a alguns componentes de rendimento, submetidos a níveis de saturação por bases, foram conduzidos dois experimentos no V% 45 e V% 65 em área com 4 anos em sistema plantio direto, na região dos cerrados, em Uberaba, MG. Os experimentos foram desenvolvidos no delineamento em blocos ao acaso, com quatro repetições. Os sete tratamentos foram constituídos pelos seguintes híbridos de milho: Z 8474, BR 3123, AG 122, C 333, D 657, Exceller e P 3071. Na média dos híbridos de milho estudados a saturação por bases de 65% foi a que mais contribuiu para os incrementos nos componentes do rendimento e nos rendimentos de grãos. Os híbridos apresentaram comportamento diferenciado no rendimento de grãos, destacando-se na saturação por bases 65%, os híbridos P 3071 e o Z 8474 e no nível 45% destacou-se o híbrido C 333. A utilização de híbridos específicos para cada nível de saturação por bases mostrou-se uma importante ferramenta para a maximização do rendimento da cultura do milho em sistema plantio direto no cerrado.

The knowledge of the hybrids of suitable maize to each condicion of the ground in under no-tillage is of significant importance technique. To evaluate the response of corn hybrids to base saturation levels (V%), two experiments were performed with V% equal to 45 and 65, in cerrado areas of Uberaba, MG, Brazil, four years under no-tillage. A completely randomized block design was used, with four replications. Seven corn hybrids represent the treatments: Z 8474, BR3123, AG 122, C 333, D 657, Exceller and P 3071. The results showed that the base saturation of 65% contributed more for the increments in yield components and for the grain yield than the 45% base saturation level. The hybrids presented different yield responses, the highest beeing for the 65% base saturation treatment: P 3071 and Z 8474 and 2); for the 45% base saturation treatment: C 333. Choosing the right hybrids for each base saturation level is an important criterium to maximize corn yields under no-tillage in the cerrado region of Brazil.

Country
Brazil
Keywords

componentes do rendimento, Agriculture (General), grain yields, acid soil, acidez do solo, adaptation, Zea mays, rendimentos de grãos, yield components, adaptação, S1-972

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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