PERFORMANCE PRODUTIVA DE CULTIVARES DE MILHO EM TRÊS SISTEMAS DE CULTIVO NO LESTE MARANHENSE
DOI:
https://doi.org/10.18512/1980-6477/rbms.v15n3p520-530Keywords:
Zea mays L., PalhadaAbstract
RESUMO – O Leste Maranhense corresponde à mais nova fronteira agrícola do Brasil. Entretanto, fatores limitantes da produtividade, como a escolha correta da variedade e o sistema de cultivo mais adequado para as condições locais, ainda são desconhecidos. Objetivou-se estudar o desempenho produtivo de 17 genótipos de milho, sob três sistemas de cultivo para a região. Foram realizados dois experimentos, um na cidade de Chapadinha e outro na cidade de Brejo, sendo avaliados 17 genótipos ao todo. Os ensaios foram dispostos no delineamento em blocos casualisados com quatro repetições em esquema fatorial 3x10 [10 cultivares e três sistemas de cultivo (plantio com cobertura de palha de carnaúba; plantio sem cobertura; plantio intercalado com feijão caupi)]. O sistema de cultivo com palha de carnaúba, independentemente do genótipo de milho e do local de avaliação, proporcionou os maiores rendimentos de grãos. Em Chapadinha, os genótipos mais produtivos foram as variedades de polinização aberta Caiano e Al-Bandeirante, o híbrido duplo AGN 1051, os híbridos triplos 2B 433, BRS 3060 e CMS 3E482 e o híbrido simples P 3646 H. Para Brejo, os melhores resultados foram obtidos pelos híbridos duplos 2B 707 HX e AGN 1051 e pelos híbridos simples 2B 604 HX, 30 F35 H e P 3646 H.
Palavras-chave: Zea mays L., Palhada, Rendimento de grãos.
PRODUCTIVE PERFORMANCE OF MAIZE CULTIVARS IN THREE FARMING SYSTEMS IN EAST MARANHÃO STATE
ABSTRACT - East Maranhão State is the newest agricultural frontier in Brazil. However, productivity limiting factors such as the correct choice of variety and the cropping system more suitable to the local conditions are still unknown. The objective of this study was to evaluate the productive performance of 17 maize genotypes under three cultivation systems for the region. Two experiments were carried out, one in the city of Chapadinha and another in the city of Brejo, evaluating 17 genotypes. The trials were arranged in a randomized block design with 4 replications in a 3x10 factorial scheme [10 cultivars and 3 cultivation systems (planting with cover of carnaúba straw, plantation without cover, intercropping with cowpea). The use of carnaúba straw provided the highest grain yields, regardless the maize genotype and the evaluation site,. In Chapadinha the most productive genotypes were the open-pollinated varieties Caiano and Al-Bandeirante, the double hybrid AGN 1051, the triple hybrids 2B 433, BRS 3060 and CMS 3E482 and the simple hybrid P 3646 H. For Brejo the best results were obtained by the double hybrids 2B 707 HX and AGN 1051 and by the simple hybrids 2B 604 HX, 30 F35 H and P 3646 H.
Keywords: Zea mays L., Straw, Grain Yield.
Downloads
Published
How to Cite
Issue
Section
License
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution License that allows the sharing of work and recognition of the work of authorship and initial publication in this journal.
Authors are able to take on additional contracts separately for non-exclusive distribution of the version of the paper published in this journal (eg, in an institutional repository or publish as a book), with acknowledgment of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (eg, in institutional repositories or on their website) at any point before or during the editorial process, as this may leadto productive exchanges, as well as increase the impact and citation of published work.