Behavior of upland rice genotypes under no-tillage and conventional tillage

This study aimed to compare the performance of upland rice cultivars and experimental lines under no-tillage and conventional planting system, as well as to verify if there was differentiated responses from tested genotypes in the two tillage systems. For so much, two experiments, one under no-tilla...

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Bibliographic Details
Published in:Pesquisa agropecuária tropical 2007-12, Vol.37 (4), p.227-232
Main Authors: Reis, M. de S, Soares, A.A, Cornélio, V.M. de O, Soares, P.C, Guedes, J.M, Costa Júnior, G.T
Format: Article
Language:Portuguese
Subjects:
ARROZ
CERO-LABRANZA
COMPORTAMENTO DE VARIEDADE
GENOTIPOS
GENOTYPE
GENOTYPES
GENÓTIPO
http://www.fao.org/aos/agrovoc#c_3225
http://www.fao.org/aos/agrovoc#c_5438
http://www.fao.org/aos/agrovoc#c_8157
http://www.fao.org/aos/agrovoc#c_8511
NON-TRAVAIL DU SOL
ORYZA SATIVA
PLANTIO DIRETO
VARIEDADES
VARIETE
VARIETIES
ZERO TILLAGE
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Summary:This study aimed to compare the performance of upland rice cultivars and experimental lines under no-tillage and conventional planting system, as well as to verify if there was differentiated responses from tested genotypes in the two tillage systems. For so much, two experiments, one under no-tillage and another under conventional tillage, were conducted at Lambari, Minas Gerais State, Brazil, repeated in the 2003/2004 and 2004/2005 growing seasons. Thirteen cultivars/experimental lines were tested. A randomized block design with three replications was used. Grain yield, plant height, flowering, and disease incidence were analyzed. Rice genotypes evaluated showed similar behavior in grain yield in the two tillage systems. In the no-tillage system, there was a tendency for reduction in plant height if compared to the conventional system. It was concluded that the no-tillage system is a feasible alternative for upland rice crop.Original Abstract: O objetivo do trabalho foi comparer o desempenho de cultivares e linhagens experimentais de arroz de terras altas, sob plantios direto e convencional, bem como verificar se ha resposta diferenciada dos materiais testados aos dois sistemas de cultivo. Para tanto, foram conduzidos, em Lambari-MG, dois ensaios, um no sistema plantio direto e outro no sistema convencional, repetidos nos anos agricolas 2003/2004 e 2004/2005. Foram testadas treze cultivares/linhagens experimentais de arroz de terras altas. Utilizouse o delineamento experimental de blocos ao acaso, com tres repeticoes. As variaveis analisadas foram: produtividade de graos, altura da planta, floracao e incidencia de doencas. Os genotipos avaliados tiveram comportamentos semelhantes para produtividade de graos nos dois sistemas de cultivo. No sistema plantio direto houve uma tendencia de reducao na altura das plantas, comparativamente ao sistema convencional. Concluiuse que o sistema plantio direto constitui alternativa viavel para a cultura do arroz de terras altas.
ISSN:1517-6398
1983-4063