Delayed-sown winter wheat: the role of short-season genotype and seeding rate
| dc.contributor.author | Cyrineu, Israel M. | |
| dc.contributor.author | Slafer, Gustavo A. | |
| dc.contributor.author | Carver, Brett F. | |
| dc.contributor.author | de Oliveira Silva, Amanda | |
| dc.date.accessioned | 2025-07-31T09:05:38Z | |
| dc.date.available | 2025-07-31T09:05:38Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | Climate change is intensifying extreme weather events, especially during winter wheat sowing in the US Southern Great Plains. Floods and droughts are forcing farmers to delay sowing, emphasizing the need for management practices and resilient genotypes adapted to delayed sowing. Our objectives were to (i) quantify yield responses of a substantively delayed sowing relative to the currently standard practice in the Southern Plains, (ii) examine genotypic responses to delayed sowing, (iii) determine whether increasing seeding rate would benefit yield, particularly with delayed sowing, and (iv) evaluate the physiological traits associated with yield responses to delayed sowing. Field experiments were conducted at two locations and in three growing seasons in Oklahoma, using eight full-season winter wheat genotypes and one short-season genotype (Butler's Gold), sown at two dates (standard, late-October, and delayed, early-December) and two seeding rates (recommended and higher). Delayed sowing did not differ in yield with standard sowing averaged across site-years. Butler's Gold matured six days earlier than full-season genotypes. Although it did not surpass full-season genotypes in yield, it produced heavier grains and higher protein concentration. Increasing the seeding rate did not improve yield with delayed sowing. Biomass at maturity and grain number per unit area were the main physiological traits associated with yield at delayed sowing (r²=0.93, P < 0.001 and r²=0.88, P < 0.001, respectively). Butler's Gold provides adaptability to abbreviated growing seasons, enabling double cropping. These findings emphasize the importance of targeted management practices and breeding strategies to optimize winter wheat production in delayed-sown conditions amidst a changing climate. | |
| dc.description.sponsorship | The authors thank the Senior Agriculturalist of the Small Grains Program, Tyler Lynch, for his assistance in managing field trials and data collection. The Oklahoma Wheat Commission and the Oklahoma Wheat Research Foundation partially funded this work. | |
| dc.identifier.doi | https://doi.org/10.1016/j.eja.2025.127766 | |
| dc.identifier.issn | 1161-0301 | |
| dc.identifier.uri | https://hdl.handle.net/10459.1/468475 | |
| dc.language.iso | eng | |
| dc.publisher | Elsevier | |
| dc.relation.isformatof | Reproducció del document publicat a https://doi.org/10.1016/j.eja.2025.127766 | |
| dc.relation.ispartof | European Journal of Agronomy, 2025, vol. 170, núm. 127766, p. 1-12 | |
| dc.rights | cc-by-nc-nd (c) Cyrineu et al., 2025 | |
| dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
| dc.subject | Agronomic management | |
| dc.subject | Environment impact | |
| dc.subject | Late planting | |
| dc.title | Delayed-sown winter wheat: the role of short-season genotype and seeding rate | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion |