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Effect of air temperature, relative humidity and growth stage on rimsulfuron tolerance in selected field maize hybrids
dc.rights.license | Atribución-NoComercial 4.0 Internacional |
dc.contributor.author | Fuentes, Cilia L. |
dc.contributor.author | Leroux, Guilles D. |
dc.date.accessioned | 2019-06-28T01:19:01Z |
dc.date.available | 2019-06-28T01:19:01Z |
dc.date.issued | 2002 |
dc.identifier.uri | https://repositorio.unal.edu.co/handle/unal/36485 |
dc.description.abstract | The effect of temperature (T), relative humidity (RH), and growth stage (GS) of six field maize hybrids on the level of tolerance to rimsulfuron [N-((4,6-dimethoxypyrimidin-2-yl) aminocarbonyl)-3-(ethylsulfonyl)-2-pyridincsulfonamide] applied at 20, 40 and 60 g a.i ha-l were evaluated. The hybríds tested are adapted to three climatic zones of Québec, Canada (zone 1: and gt;2 700 maize heat units (CHU); zone 2: 2500 to 2 700 CHU; zone 3: 2 300 to 2 500 CHU).Two hybrids of each zone were considered. Three experiments were carried out under growth chamber and glasshouse conditions. Corn response to rimsulfuron doses was linear. Hybrids of zone 1 were more tolerant to rimsulfuron than hybrids from zones 2 and zone 3.Dry weight reduction of hybrids (DWR as a percentage of the untreated control 14 days after treatment) varied according to the dose from 22% to 29%, 31 % to 35%, and 36% to 38% in zones 1, 2, and 3, respectively. The response of maize hybrids to increasing temperaturewas linear, and the DWR was 12%, 28%, and 51 % at 14°C, 21 °C, and 28°C, respective1y. Injury to maize hybrids grown under 60% and 75% RH averaged 31 % and 37% DWR, respectively. Corn plants treated at the 2- to 3-leaf growth stages showed, in general, more sensitivity to rimsulfuron than those treated at the 4- to 5- leaf stage. These results confirmthat both environmental conditions and maize genotypesplay an important role in the injury caused by rimsulfuron. Key words: herbicides, sulfonylurea, rimsulfuron, field maize hybrids, tolerance, environmental conditions. Abbreviations: CHU, maize heat units; T. temperature;RH, relative humidity; GS, growth stage; DWR, dry weightreduction. |
dc.format.mimetype | application/pdf |
dc.language.iso | spa |
dc.publisher | Universidad Nacional de Colombia, Facultad de Agronomía, Centro Editorial |
dc.relation | http://revistas.unal.edu.co/index.php/agrocol/article/view/24180 |
dc.relation.ispartof | Universidad Nacional de Colombia Revistas electrónicas UN Agronomía Colombiana |
dc.relation.ispartof | Agronomía Colombiana |
dc.relation.ispartofseries | Agronomía Colombiana; Vol. 20, núm. 3 (2002); 21-30 Agronomía Colombiana; Vol. 20, núm. 3 (2002); 21-30 2357-3732 0120-9965 |
dc.rights | Derechos reservados - Universidad Nacional de Colombia |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ |
dc.title | Effect of air temperature, relative humidity and growth stage on rimsulfuron tolerance in selected field maize hybrids |
dc.type | Artículo de revista |
dc.type.driver | info:eu-repo/semantics/article |
dc.type.version | info:eu-repo/semantics/publishedVersion |
dc.identifier.eprints | http://bdigital.unal.edu.co/26569/ |
dc.relation.references | Fuentes, Cilia L. and Leroux, Guilles D. (2002) Effect of air temperature, relative humidity and growth stage on rimsulfuron tolerance in selected field maize hybrids. Agronomía Colombiana; Vol. 20, núm. 3 (2002); 21-30 Agronomía Colombiana; Vol. 20, núm. 3 (2002); 21-30 2357-3732 0120-9965 . |
dc.rights.accessrights | info:eu-repo/semantics/openAccess |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 |
dc.type.coarversion | http://purl.org/coar/version/c_970fb48d4fbd8a85 |
dc.type.content | Text |
dc.type.redcol | http://purl.org/redcol/resource_type/ART |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 |
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Agronomía Colombiana [1023]
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