Row spacing and growth habit in peanut crops effects on seed yield determination across environments
Narrowing row spacing was expected to improve peanut crop performance, but the responses varied depending upon the evaluated environment and the growth habit of the plant. To clarify apparent inconsistencies, two cultivars with contrasting growth habits were sown at 52 cm and 70 cm row spacings in f...
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| Formato: | Artículo |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2021haro.pdf LINK AL EDITOR |
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| 022 | |a 0378-4290 | ||
| 024 | |a 10.1016/j.fer.2021.108363 | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 245 | 0 | 0 | |a Row spacing and growth habit in peanut crops |b effects on seed yield determination across environments |
| 520 | |a Narrowing row spacing was expected to improve peanut crop performance, but the responses varied depending upon the evaluated environment and the growth habit of the plant. To clarify apparent inconsistencies, two cultivars with contrasting growth habits were sown at 52 cm and 70 cm row spacings in field experiments carried out in four environments. Vegetative and reproductive traits were evaluated. The leaf area index was always higher in the 52 cm than in the 70 cm row spacing, independently of the growth habit. Similarly, the light attenuation coefficient (k) was higher under narrow than under wide rows, but the cultivar with procumbent growth habit had a larger k and increased slightly the intercepted radiation respect to the erect type. These responses of the procumbent cultivar were driven by its lateral arrangements towards neighboring rows and its longer cycle duration. Narrow rows contributed to intercept approximately 14% more radiation than wide rows. These responses determined an improved biomass production through increases in the crop growth rate during the pod set period, with subsequent increases of the radiation use efficiency of this phase. Narrow row spacing enhanced seed and pod yields independently of the growth habit, but the relative importance of each seed yield component varied between cultivars. Seed numbers were more relevant for the erect growth habit, concurrently with the marked increase in total flower numbers of this cultivar. Seed weight was more relevant for the procumbent growth habit. On one hand, the erect growth habit caused a larger relative variation in seed and pod yields across environments than the procumbent one, particularly at narrow row spacing. On the other hand, the erect growth habit showed the lowest yield under wide rows. The small differences in biomass production between growth habits but the large difference in harvest index (procumbent > erect) contributed to an enhanced and more stable seed yield of the procumbent type, particularly when grown under narrow rows and linked to the large seed size of the runner cultivar. Results suggest that farmers should consider reducing row spacing as a way to increase peanut yield in the region under analysis. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a ARACHIS HYPOGAEA L. | ||
| 653 | |a GROWTH HABIT | ||
| 653 | |a ROW SPACING | ||
| 653 | |a PHENOLOGY | ||
| 653 | |a ENVIRONMENTAL CONDITIONS | ||
| 700 | 1 | |a Haro Juárez, Ricardo Javier |u Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi (EEA Manfredi). Córdoba, Argentina. |9 45010 | |
| 700 | 1 | |a Carrega, Willians C. |u Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Veterinárias. Departamento de Ciências da Produção Agrícola. São Paulo, Brasil. |9 74855 | |
| 700 | 1 | |a Otegui, María Elena |u Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. |u Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino (EEA Pergamino). Pergamino, Buenos Aires, Argentina. |u CONICET - Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino (EEA Pergamino). Pergamino, Buenos Aires, Argentina. |9 5930 | |
| 773 | 0 | |t Field crops research |w (AR-BaUFA)SECS000083 |g vol.275 (2022), art.108363, grafs., tbls. | |
| 856 | |f 2021haro |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2021haro.pdf |x ARTI202306 | ||
| 856 | |u https://www.elsevier.com |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||