Spatial and temporal plant-to-plant variability effects on soybean yield
Plant density and row spacing are management practices that farmers use to maximize soybean (Glycine max (L.) Merr.) yield. Other canopy aspects related to seedling establishment like spatial (spacing among plants) and temporal (timing of plant emergence) within-row plant-to-plant variability have r...
| Autores principales: | , , , |
|---|---|
| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
2018
|
| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S1161030118300522 http://hdl.handle.net/20.500.12123/2756 https://doi.org/10.1016/j.eja.2018.02.006 |
| _version_ | 1855035020520980480 |
|---|---|
| author | Masino, Alejandra Rugeroni, Pablo Borrás, Lucas Rotundo, José Luis |
| author_browse | Borrás, Lucas Masino, Alejandra Rotundo, José Luis Rugeroni, Pablo |
| author_facet | Masino, Alejandra Rugeroni, Pablo Borrás, Lucas Rotundo, José Luis |
| author_sort | Masino, Alejandra |
| collection | INTA Digital |
| description | Plant density and row spacing are management practices that farmers use to maximize soybean (Glycine max (L.) Merr.) yield. Other canopy aspects related to seedling establishment like spatial (spacing among plants) and temporal (timing of plant emergence) within-row plant-to-plant variability have received less attention. Negative yield effects of non-uniform stands have been reported for maize (Zea mays subsp. Mays L.), but it is commonly accepted that soybean plants compensate for any plant-to-plant growth difference. Planting quality is becoming relevant because small yield effects can have a high economic return due to high soybean prices and low implementation costs. The objectives were to assess the impact of non-uniform spatial and temporal seedling establishment on soybean yields and to identify putative mechanisms. Results showed that, across planting dates and plant densities, there was no yield loss due to increased spatial plant-to-plant variation in a later maturity group cultivar (MG IV), but reduced yield in an earlier one (MG III). Contrarily, non-uniform temporal distributions significantly reduced yield across cultivars. Having a poor spatial distribution had no effect on the average plant growth rate or its plant-to-plant variability. A poor temporal distribution did not affect individual average plant growth rate but variability was increased. This increased variability determined that some individuals had higher plant growth but reduced seed number because of reduced reproductive partitioning. Novel findings can be summarized as: (i) the higher relative importance of temporal vs. spatial non-uniform canopies in determining soybean yield reductions, (ii) the influence of reduced seed set at higher plant growth rates to mechanistically explain yield reductions in non-uniform temporal canopies; (iii) the concept that the yield effect of non-uniform temporal canopies cannot be overcome by increased plant densities. Future research needs to better understand the interactions between cultivar reproductive characteristics and susceptibility to non-uniform temporal canopies. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2756 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA27562018-07-10T17:28:18Z Spatial and temporal plant-to-plant variability effects on soybean yield Masino, Alejandra Rugeroni, Pablo Borrás, Lucas Rotundo, José Luis Soja Rendimiento Espaciamiento Calidad Manejo del Cultivo Soybeans Yields Spacing Quality Crop Management Densidad de siembra Plant density and row spacing are management practices that farmers use to maximize soybean (Glycine max (L.) Merr.) yield. Other canopy aspects related to seedling establishment like spatial (spacing among plants) and temporal (timing of plant emergence) within-row plant-to-plant variability have received less attention. Negative yield effects of non-uniform stands have been reported for maize (Zea mays subsp. Mays L.), but it is commonly accepted that soybean plants compensate for any plant-to-plant growth difference. Planting quality is becoming relevant because small yield effects can have a high economic return due to high soybean prices and low implementation costs. The objectives were to assess the impact of non-uniform spatial and temporal seedling establishment on soybean yields and to identify putative mechanisms. Results showed that, across planting dates and plant densities, there was no yield loss due to increased spatial plant-to-plant variation in a later maturity group cultivar (MG IV), but reduced yield in an earlier one (MG III). Contrarily, non-uniform temporal distributions significantly reduced yield across cultivars. Having a poor spatial distribution had no effect on the average plant growth rate or its plant-to-plant variability. A poor temporal distribution did not affect individual average plant growth rate but variability was increased. This increased variability determined that some individuals had higher plant growth but reduced seed number because of reduced reproductive partitioning. Novel findings can be summarized as: (i) the higher relative importance of temporal vs. spatial non-uniform canopies in determining soybean yield reductions, (ii) the influence of reduced seed set at higher plant growth rates to mechanistically explain yield reductions in non-uniform temporal canopies; (iii) the concept that the yield effect of non-uniform temporal canopies cannot be overcome by increased plant densities. Future research needs to better understand the interactions between cultivar reproductive characteristics and susceptibility to non-uniform temporal canopies. EEA Marcos Juárez Fil: Masino, Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez. Agencia de Extensión Rural Corral de Bustos; Argentina Fil: Rugeroni, Pablo. Syngenta Agro S.A.; Argentina Fil: Borrás, Lucas. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina Fil: Rotundo, José Luis. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina 2018-07-10T17:26:54Z 2018-07-10T17:26:54Z 2018-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S1161030118300522 http://hdl.handle.net/20.500.12123/2756 1161-0301 https://doi.org/10.1016/j.eja.2018.02.006 eng info:eu-repo/semantics/restrictedAccess application/pdf European Journal of Agronomy 98 : 14-24 (August 2018) |
| spellingShingle | Soja Rendimiento Espaciamiento Calidad Manejo del Cultivo Soybeans Yields Spacing Quality Crop Management Densidad de siembra Masino, Alejandra Rugeroni, Pablo Borrás, Lucas Rotundo, José Luis Spatial and temporal plant-to-plant variability effects on soybean yield |
| title | Spatial and temporal plant-to-plant variability effects on soybean yield |
| title_full | Spatial and temporal plant-to-plant variability effects on soybean yield |
| title_fullStr | Spatial and temporal plant-to-plant variability effects on soybean yield |
| title_full_unstemmed | Spatial and temporal plant-to-plant variability effects on soybean yield |
| title_short | Spatial and temporal plant-to-plant variability effects on soybean yield |
| title_sort | spatial and temporal plant to plant variability effects on soybean yield |
| topic | Soja Rendimiento Espaciamiento Calidad Manejo del Cultivo Soybeans Yields Spacing Quality Crop Management Densidad de siembra |
| url | https://www.sciencedirect.com/science/article/pii/S1161030118300522 http://hdl.handle.net/20.500.12123/2756 https://doi.org/10.1016/j.eja.2018.02.006 |
| work_keys_str_mv | AT masinoalejandra spatialandtemporalplanttoplantvariabilityeffectsonsoybeanyield AT rugeronipablo spatialandtemporalplanttoplantvariabilityeffectsonsoybeanyield AT borraslucas spatialandtemporalplanttoplantvariabilityeffectsonsoybeanyield AT rotundojoseluis spatialandtemporalplanttoplantvariabilityeffectsonsoybeanyield |