Data/hora: 23/06/2024 04:30:06

Biblioteca(s): | Embrapa Milho e Sorgo; Embrapa Pesca e Aquicultura; Embrapa Soja.
Data corrente: | 14/05/2019
Data da última atualização: | 14/02/2020
Autoria: | FARIA, I. K. P. de; VIEIRA, J. L. V.; TENELLI, S.; ALMEIDA, R. E. M. de; CAMPOS, L. J. M.; COSTA, R. V. da; ZAVASCHI, E.; ALMEIDA, R. F. de; CARNEIRO, L. de M. e S.; OTTO, R.
Afiliação: | ITALO KAYE PINTO DE FARIA, ESALQ; JOSE LUIS VILELA VIEIRA, ESALQ; SARAH TENELLI, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; LEONARDO JOSE MOTTA CAMPOS, CNPSO; RODRIGO VERAS DA COSTA, CNPMS; EDUARDO ZAVASCHI, ESALQ; RISELY FERRAZ DE ALMEIDA, ESALQ; LEANDRO DE MELLO E SILVA CARNEIRO, UNIVERSIDADE FEDERAL DE UBERLÂNDIA; RAFAEL OTTO, ESALQ.
Título: | Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil.
Ano de publicação: | 2019
Fonte/Imprenta: | Scientia Agricola, v. 76, n. 4, p. 344-352, jul./ago. 2019.
ISSN: | 1678-992X
DOI: | 10.1590/1678-992X-2017-0295
Idioma: | Inglês
Conteúdo: | Integrating plant density and nitrogen (N) management is a strategy for improving corn yields, especially for off-season corn production in the tropics. This study tested the hypothesis that increasing plant densities and N rates promotes yield gains for off-season corn production in high-yielding environments. The aim of the study was to investigate the yield performances of two hybrid versions (DKB PRO and DKB PRO3) submitted to three plant densities (55,000; 65,000 and 75,000 plants ha&#8722;1) and four N rates (control, 60, 120 and 180 kg ha&#8722;1 N). Field trials were undertaken at Uberlândia-MG (site1 and 2) and Pedro Afonso-TO (site 3), Brazil from which data on corn yield parameters were collected and analyzed. Multivariate analysis separated the three trial areas into two groups, presenting high (sites 1 and 2) and low yields (site 3), which were related to weather conditions. There was no influence of a hybrid version or plant densities on crop yields at site 1 or 2. In contrast, there was a positive response to increasing plant densities and the use of DKB PRO3 at site 3. A significant response to N was observed at sites 2 and 3, following a plateau model. Our results suggest that N application rates and plant densities do have the potential to increase off-season corn yields in low yielding environments.
Thesagro: | Densidade de Plantio; Milho; Milho Hibrido; População de Planta; Zea Mays.
Thesaurus Nal: | Corn; Hybrids; Population density.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/197326/1/CNPASA-2019-sa.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/197976/1/Faria-Optimal.pdf

Registro original: | Embrapa Pesca e Aquicultura (CNPASA)

Exemplares:

CNPASA - (797-1) - UPC - AP - DD - CNPASA_AP13 -  - 2019.013 - DIS
CNPSO - (39391-1) - UPC - AP - DD -  -  -  - DIS
CNPMS - (28844-1) - UPC - AP - DD -  -  -  - DIS