Studying the crop yield influence on the commercial quality of the promising table grapes

Abstract

Abstract The article contains an introduction, general research objectives are indicated, a comprehensive solution for evaluating raw materials for industrial processing for various types of food products is presented, 18 promising table grape varieties are studied as well as their yield and commercial quality, the percentage of non-standard products is determined, and mathematical processing of data is carried out. Correlation and regression analysis showed that the relationship between yield and yield of marketable grapes is reliable and strong, and the form of correlation is direct (r = 0.99). The indicated dependence is described by the equation y = 0.937x–1.2139. The regression coefficient by x = 0.937 shows in which direction and how the function (y) changes on average when the argument (x) changes. Using the obtained equations, it is possible to construct a theoretical line of regression, according to which it is possible to predict the value of marketable grapes from yield. An increase in the yield of grapes for every 10 centners per hectare leads to an increase in the yield of marketable grapes by 9.37 %.