Studying standard and rheological quality parameters of winter wheat by Python visualisation

Magyar Z., Pepó P. (2021): Studying standard and rheological quality parameters of winter wheat by Python visualisation. Plant Soil Environ., 67: 711–720.


download PDF

This study was carried out to present an innovative solution for interpreting large data sets in agri-statistics with the invocation of programmed visualisation. Moreover, the following polyfactorial long-term experiment embodies a comprehensive study of 18 wheat quality parameters. The effect of increasing dosages of fertiliser (control, N90PK, N150PK) was examined on 3 winter wheat cultivars (KG Kunhalom, GK Csillag, Hybiza) in two consecutive growing seasons (2018–2019). The ecological conditions of 2018 gave a significantly higher yield, meanwhile 2019 significantly augmented gluten spread, alveographic tenacity, alveographic deformation work, valorigraphic stability and quality group and loaf volume. N90PK dosage was enough to realise yield and quality potential as well. Fertilising significantly improved 13 indices, namely yield, crude protein, Zeleny index, wet gluten content, alveographic extensibility, alveographic deformation work, valorigraphic water absorption, quality number and group, dough development time, stability, softening and loaf volume. Considering yield, cv. Hybiza performed better, while cvs. KG Kunhalom and GK Csillag possessed significantly better protein-linked postharvest attributes. One of the most important findings is that waffle chart, joint plot, correlation matrix and complexradar of Python provide a very powerful tool in agri-statistics. Also, the results can potentially improve the knowledge about cultivar-specific agronomy practice, wheat quality and the connections between these parameters.


Ayoub M., Guertin S., Fregeau-Reid J., Smith D.L. (1994): Nitrogen fertilizer effect on breadmaking quality of hard red spring wheat in eastern Canada. Crop Science, 34: 1346–1352.
Bedő Z. (2008): Breeding and Cultivation of Pannonian Quality Wheat. Budapest, Agroinform Kiadó és Nyomda Kft., 32. (In Hungarian) ISBN: 9789635028818
Borghi B., Giordani G., Corbellini M., Vaccino P., Guermandi M., Toderi G. (1995): Influence of crop rotation, manure and fertilizers on bread making quality of wheat (Triticum aestivum L.). European Journal of Agronomy, 4: 37–45.
Borghi B. (1999): Nitrogen as determinant of wheat growth and yield. In: Satorre E.H., Slafer G.A. (eds.): Wheat Ecology and Physiology of Yield Determination. New York, Food Products Press, 67–84. ISBN: 9781560228752
Branlard G., Dardevet M., Saccomano R., Lagoutte F., Gourdon J. (2001): Genetic diversity of wheat storage proteins and bread wheat quality. Euphytica, 119: 59–67.
Cho S.-W., Kang C.-S., Kang T.-G., Cho K.-M., Park C.S. (2018): Influence of different nitrogen application on flour properties, gluten properties by HPLC and end-use quality of Korean wheat. Journal of Integrative Agriculture, 17: 982–993.
Horváth Cs. (2014): Storage proteins in wheat (Triticum aestivum L.) and the ecological impacts affecting their quality and quantity, with a focus on nitrogen supply. Columella – Journal of Agricultural and Environmental Sciences, 1: 57–76.
Hunter J.D. (2007): Matplotlib: A 2D graphics environment. Computing in Science and Engineering, 9: 90–95.
Linina A., Ruza A. (2018): The influence of cultivar, weather conditions and nitrogen fertilizer on winter wheat grain yield. Agronomy Research, 16: 147–156.
Massoudifar O., Kodjouri F.D., Mohammadi G.N., Mirhadi M.J. (2014): Effect of nitrogen fertilizer levels and irrigation on quality characteristics in bread wheat (Triticum aestivum L.). Archives of Agronomy and Soil Science, 60: 925–934.
Matuz J., Krisch J., Véha A., Petróczi I.M., Tanács L. (2007): Effect of the fertilization and the fungicide treatment on the alveographic quality of winter wheat. Cereal Research Communications, 35: 1193–1196.
Mendiburu F.D. (2019): Agricolae: Statistical Procedures for Agricultural Research. R Package. Version 1.3-1.
OECD (2020): Agricultural Outlook 2020–2029. Wheat Projections. Paris, Organisation for Economic Co-operation and Development. Available at:
Panozzo J.F., Eagles H.A. (2000): Cultivar and environmental effects on quality characters in wheat. II. Protein. Australian Journal of Agricultural Research, 51: 629–636.
Pepó P. (2011): Role of genotypes and agrotechnical elements in cereal crop models. Cereal Research Communications, 39: 160–167.
Pepó P., Sárvári M. (2011): Production of Crops. Debrecen, Development of Curriculum for Agricultural Engineering MSc, 14–26. (In Hungarian)
Tóthné P.L. (2011): Mathematical Basics of Research Methodology. Eger, Eszterházy Károly Főiskola. Available at: (In Hungarian)
Vida Gy. (2018): Production and Use of Hybrid Wheat. Budapest, Hungary. Available at: (In Hungarian)
Waskom M. (2020): Seaborn: statistical data visualization. Journal of Open Source Software, 60. Available at:
download PDF

© 2022 Czech Academy of Agricultural Sciences | Prohlášení o přístupnosti