Evaluation size and number of yellow potato tubers under different planting densities using zero-inflated models

Keywords: Zero-inflated model, size tubers, negative binomial regression


A field study was carried out on the cultivation of the yellow diploid potato (Solanum tuberosum Phureja Group) to evaluate the influence of the planting density associated with distances between plants of 30, 40, and 50 cm and distances between the rows and paths of 100 cm on the tuber count with sizes less than 2 cm, 2-4 cm, 4-6 cm, and more than 6 cm. At the time of the harvest of the tubers, they were classified by size and respective count was made. The modelling of the counts was done by means of the usual negative binomial regression and by the inflated zeros option. The zero-inflated negative binomial regression models showed a significant effect of the sowing density on the tuber count in the sizes that were superior to 4 cm while the negative binomial model showed a significant effect it in the case of the sizes lower than 4 cm. The results on size and density are attributes of interest in both the agronomic management of this crop and in the industrial management of the tubers, so the relationship that we found can be adopted in both areas to generate the desired attributes of the crop for improving the production and guiding the process of industrialization.


Download data is not yet available.


Aliche, E. B., Oortwijn, M., Theeuwen, T. P. J. M., Bachem, C. W. B., van Eck, H. J., Visser, R. G. F. & van der Linden, C. G. (2019). Genetic mapping of tuber size distribution and marketable tuber yield under drought stress in potatoes. Euphytica, 215(11). https://doi.org/10.1007/s10681-019-2508-0
Arias, V., Bustos, P. & Ñustez, C. E. (1996). Evaluation of the yield in
papa criolla (Solanum phureja Juz. et BUk.), «yema de Huevo» variety, under
different densities at Sabana de Bogotá. Revista Agronomía Colombiana,
13(2), 152-161. https://revistas.unal.edu.co/index.php/agrocol/article/view/25442
Barragán, J. N. (2019). Desempeño y perspectivas económicas del subsector papa 2018-2019. Revista Papa (47), 44-48.
Celis-Gamboa, B. C. (s. f.). The life cycle of the potato (Solatium tuberosum L.): From crop physiology to genetics [Ph.D. Thesis]. Wageningen University. https://www.proquest.com/openview/96d595f31eaa4257cbf73c2041988475/1?pq-origsite=gscholar&cbl=2026366&diss=y
Cotes, J. M., Ñústez, C. E. & Pachón, J. I. (2000). Evaluación de la densidad de siembra y el tamaño del tubérculo semilla en la producción de semilla básica de papa criolla, variedad yema de huevo (Solanum phureja Juz et Buk.). Revista Agronomía Colombiana, 17(1-3), 57-60. https://revistas.unal.edu.co/index.php/agrocol/article/view/21546/22550
Dutt, S., Manjul, A. S., Raigond, P., Singh, B., Siddappa, S., Bhardwaj, V., Kawar, P. G., Patil, V. U. & Kardile, H. B. (2017). Key players associated with tuberization in potato: potential candidates for genetic engineering. Critical Reviews in Biotechnology, 37(7), 942-957. https://doi.org/10.1080/07388551.2016.1274876
Escobar, V. and Vander Zaag, P. (1988). Field performance of potato (Solanum spp.) cuttings in the warm tropics: Influence of planting system, hilling, density and pruning. American Potato Journal, 65(1), 1-10. https://doi.org/10.1007/bf02855308
He, W., Struik, P. C., He, Q. & Zhang, X. (1998). Planting Time and Seed Density Effects on Potato in Subtropical China. Journal of Agronomy and Crop Science, 180(3), 159-171. https://doi.org/10.1111/j.1439-037x.1998.tb00386.x
Henne, D. C., Workneh, F. & Rush, C. M. (2012). Spatial Patterns and Spread of Potato Zebra Chip Disease in the Texas Panhandle. Plant Disease, 96(7), 948-956. https://doi.org/10.1094/pdis-09-11-0805-re.
Hilbe, J. M. (2014). Modeling Count Data. Cambridge University Press. https://doi.org/10.1017/cbo9781139236065
Lahlou, O., Ouattar, S. & Ledent, J. F. (2003, abril). The effect of drought and cultivar on growth parameters, yield and yield components of potato. Agronomie, 23(3), 257-268. https://doi.org/10.1051/agro:2002089
R Core Team (2022). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.
Rodríguez Pérez, L., Corchuelo Rozo, G. & Ñústez, C. E. (2003). The influence of plant spacing on potato (Solanum tuberosum L. cv. Parda pastusa) morphology and growth in two contrasting environments. Revista Agronomía Colombiana, 21(3), 210-21. http://www.redalyc.org/articulo.oa?id=180317974010
Struik, P. C., Haverkort, A. J., Vreugdenhil, D., Bus, C. B. & Dankert, R. (1990). Manipulation of tuber-size distribution of a potato crop. Potato Research, 33(4), 417-432. https://doi.org/10.1007/bf02358019
Tabares Patiño, E. D., Jaramillo Villegas, S., González Santamaría, L. H. & Cotes Torres, J. M. (2009). Effect of fertilization in potato (Solanum tuberosum L.) DIACOL Capiro variety under Andisol from EAST Antioquia, COLOMBIA. Revista Facultad Nacional de Agronomía - Medellín, 62(2), 5099-5110. http://www.scielo.org.co/pdf/rfnam/v62n2/a09v62n2.pdf
van der Veeken, A. J. H. and Lommen, W. J. M. (2009). How Planting Density Affects Number and Yield of Potato Minitubers in a Commercial Glasshouse Production System. Potato Research, 52(2), 105-119. https://doi.org/10.1007/s11540-008-9124-z
Wasserstein, R. L. & Lazar, N. A. (2016). The ASA Statement on p-Values: Context, Process, and Purpose. The American Statistician, 70(2), 129-133. https://doi.org/10.1080/00031305.2016.1154108
Harvested tubers (Solanum tuberosum Phureja Group) of different sizes
How to Cite
Bernal-Margfoy, N., Darghan, E., Rodríguez, L., & Gonzalez, G. (2022). Evaluation size and number of yellow potato tubers under different planting densities using zero-inflated models. Revista De La Facultad De Agronomía De La Universidad Del Zulia, 39(4), e223949. Retrieved from https://produccioncientificaluz.org/index.php/agronomia/article/view/38973
Crop Production