Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil.
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.
Main Authors: | , , , , , , , , , |
---|---|
Other Authors: | |
Format: | Separatas biblioteca |
Language: | English eng |
Published: |
2019-05-30
|
Subjects: | Milho, Zea Mays, População de Planta, Densidade de Plantio, Milho Hibrido, Corn, Hybrids, Population density, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1109502 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-alice-doc-1109502 |
---|---|
record_format |
koha |
spelling |
dig-alice-doc-11095022019-05-31T00:37:54Z Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. 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. 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. Milho Zea Mays População de Planta Densidade de Plantio Milho Hibrido Corn Hybrids Population density 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. 2019-05-31T00:37:46Z 2019-05-31T00:37:46Z 2019-05-30 2019 2019-10-04T11:11:11Z Separatas Scientia Agricola, v. 76, n. 4, p. 344-352, jul./ago. 2019. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1109502 10.1590/1678-992X-2017-0295 en eng openAccess |
institution |
EMBRAPA |
collection |
DSpace |
country |
Brasil |
countrycode |
BR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-alice |
tag |
biblioteca |
region |
America del Sur |
libraryname |
Sistema de bibliotecas de EMBRAPA |
language |
English eng |
topic |
Milho Zea Mays População de Planta Densidade de Plantio Milho Hibrido Corn Hybrids Population density Milho Zea Mays População de Planta Densidade de Plantio Milho Hibrido Corn Hybrids Population density |
spellingShingle |
Milho Zea Mays População de Planta Densidade de Plantio Milho Hibrido Corn Hybrids Population density Milho Zea Mays População de Planta Densidade de Plantio Milho Hibrido Corn Hybrids Population density 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. Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. |
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. |
author2 |
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. |
author_facet |
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. 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. |
format |
Separatas |
topic_facet |
Milho Zea Mays População de Planta Densidade de Plantio Milho Hibrido Corn Hybrids Population density |
author |
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. |
author_sort |
FARIA, I. K. P. de |
title |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. |
title_short |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. |
title_full |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. |
title_fullStr |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. |
title_full_unstemmed |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil. |
title_sort |
optimal plant density and nitrogen rates for improving off-season corn yields in brazil. |
publishDate |
2019-05-30 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1109502 |
work_keys_str_mv |
AT fariaikpde optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT vieirajlv optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT tenellis optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT almeidaremde optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT camposljm optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT costarvda optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT zavaschie optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT almeidarfde optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT carneiroldemes optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil AT ottor optimalplantdensityandnitrogenratesforimprovingoffseasoncornyieldsinbrazil |
_version_ |
1756025979567865856 |