Please use this identifier to cite or link to this item:
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1109019
Title: | Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. |
Authors: | 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. ![]() ![]() |
Affiliation: | 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. |
Date Issued: | 2019 |
Citation: | Scientia Agricola, v. 76, n. 4, p. 344-352, jul./ago. 2019. |
Description: | 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−1) and four N rates (control, 60, 120 and 180 kg ha−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: | Milho Zea Mays População de Planta Densidade de Plantio Milho Hibrido |
NAL Thesaurus: | Corn Hybrids Population density |
ISSN: | 1678-992X |
DOI: | 10.1590/1678-992X-2017-0295 |
Type of Material: | Artigo de periódico |
Access: | openAccess |
Appears in Collections: | Artigo em periódico indexado (CNPASA)![]() ![]() |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
CNPASA2019sa.pdf | 823.03 kB | Adobe PDF | ![]() View/Open |