Planting density strategy in sunflower cultivation with twin row arrangement
DOI:
https://doi.org/10.5281/zenodo.14788750Keywords:
leaf area, competence, growth, chapter, Helianthus annuusAbstract
In this research, the objective was to evaluate the effect of different planting densities in twin rows on the growth and productive components of sunflower, such as head size. The study was conducted at the experimental field of the Faculty of Agricultural Sciences, Universidad Privada del Este, located in Alto Paraná, Paraguay, on an Oxisol soil. A randomized complete block design was used with 5 treatments and 4 repetitions, with planting densities 78,000; 90,000; 107,000; 130,000 and 166,000 seeds per hectare. The variables evaluated were plant height, leaf area and capitulum diameter. The results showed that different planting densities did not significantly affect plant height or leaf area, indicating that sunflowers have a high capacity to adapt to changes in plant density. Likewise, the diameter of the capitulum did not increase proportionally with the increase in seeds per hectare. The findings suggest that planting densities of 78,000 to 166,000 seeds per hectare did not affect sunflower development, therefore, a considerable increase in the number of seeds per unit area is not justified.
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Andrade, F. H. (1995). Analysis of growth and yield of maize, sunflower and soybean grown at Balcarce, Argentina. Field Crops Research, 41(1), 1-12. https://doi.org/10.1016/0378-4290(94)00108-5
Diepenbrock, W., Long, M., & Feil, B. (2001). Yield and quality of sunflower as affected by row orientation, row spacing and plant density. Bodenkultur-Wien and Munchen, 52(1), 29-36. https://doi.org/10.1016/S0378-4290(01)00069-0
Gozubenli, H., Kilink, M., Sener, O., & Konuscan, O. (2004). Effects of single and twin row planting on yield and yield components in maize. Asian Journal of Plant Sciences, 3(2), 203-206. https://doi.org/10.3923/ajps.2004.203.206
Intriago, D. I., & Torres, J. R. (2018). Efecto de la densidad y arreglo de siembra en el crecimiento, desarrollo y rendimiento del maíz (Zea mays L.) [Doctoral dissertation, Escuela Agrícola Panamericana, Zamorano]. Zamorano University Repository. https://www.zamorano.edu
López, G., González, E., Llamas Molinas, F., García, R., & Ríos, D. (1995). Mapa de reconocimiento de suelos de la Región Oriental. Banco Mundial. DMA. Esc.1500.000.
Nielsen, D. R. (2009). Perspectives on narrow row spacings for corn (less than 30 inches). Agronomy Department, Purdue University, 27, 1-6. https://www.agry.purdue.edu
Widdicombe, W. D., & Thelen, K. D. (2002). Row width and plant density effects on corn grain production in the northern Corn Belt. Agronomy Journal, 94(5), 1020-1023. https://doi.org/10.2134/agronj2002.1020
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