The researches were carried out in 2017-2019, in the experimental field from the Experimental Didactic Station of the Banat’s University of Agricultural Sciences and Veterinary Medicine of ”King Mihai I of Romania” from Timişoara. The experiments were organized on a cambic chernozem soil , wet groundwater (slightly gleyic), slightly decarbonated, on loessoid deposits - dusty, loamy - clay, with pH -6.10 and a humus content of 2.58%.In terms of climate, according to Koppen, the climate falls within the formula c.f.b.x., namely a temperate climate, with rainfall throughout the year, but with a deficit in the summer months. Three biotypes were studied in the research, namely the Bioro variety and two populations. The research included a two-factor experiment with three repetitions. Fertilization was performed with variable doses of nitrogen fertilizers, applied on a constant background of P60K60. On average, on the fertilizer doses, the highest yield of 4523 kg/ha was obtained for the Purple population, followed by the White population with 3871 k ha, both populations exceeding the yield for the Bioro variety, for which the yield was only 3404 kg/Ha. The protein content was close, varying between 24.61% in the Purple population and 25.37% in the White population. In this paper, statistical correlations were made based on the following parameters from the laws of distribution of the random variable X like: mean, dispersion, standard deviation, which we will note by . Be it two estimated values 1*and 2* found from two selection variables. In other words, the dispersion is the square mean of the deviation from the mean. From the definition relations it is observed that the narrower the interval in which the values of xi are concentrated, the smaller the dispersion and vice versa. Dispersion is also called variance. The error we are working with is 0.05 in all cases of comparing the means.

broad bean (Vicia faba), fertilization, protein content

field crops and pastures

Presentation: poster