Published in Scientific Papers. Series A. Agronomy, Vol. LXIII, Issue 1
Written by Velika KUNEVA, Atanas SEVOV
The current study aims at using a mathematical approach (correlation and regression analysis) in order to establish a correlation between the examined biometric indicators, to make a more objective assessment, and to express the influence between indicators and trends for yield improvement by means of the regression analysis. Data of a threeyear field study are used. It was conducted in Plovdiv in the period 2017-2019. As a result of the correlation analysis, correlations between the examined indicators were established. The strongest positive correlation was found between the indices showing the number of internodes per stalk and the weight of a single stalk r = 0.993 for Legend variety, followed by Multifolium 1 variety with a correlation between the indices of weight of multifolium leaves and green mass yield r = 0.959.
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