Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Florin SALA

The study evaluated the variation of wheat production in relation to the ears density and category at harvest moment. The study was conducted at the Didactic and Experimental Resort (DER), Banat University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara, Timis County, Romania (BUASVM).. The 'Solehio' wheat variety was cultivated in non-irrigated technology conditions, on a chernozem type soil. At the harvest moment, determinations of ears density and category were made in 10 random locations within the crop plot. Three ears categories were identified, in relation to the main stem and tillering, on which they formed: main stem ear (MSE), tiller stem 1 ear (TS1E), tiller stem 2 ears (TS2E). The average wheat production (Y) was 5,247 kg ha_-1. Weak correlations were found between TS2E and MSE, in statistical safety conditions (r=-0.634*, *p<0.05). High variability was recorded in the case of the TS2E ears category (CV_TS2E = 3.2478), intermediate variability was recorded in the case of the TS1E ears category (CV_TS1E = 3.0096), and in the case of the MSE ears category the lowest variability was recorded (CV_MSE = 1.2538). From the analysis of the ears categories identified at harvest, the 'Solehio' wheat variety, a ratio of about 7:2:1 was found. The regression analysis facilitated the obtaining of equations that described the production variation in relation to the categories of recorded ears, in conditions of statistical safety (R₂=0.999, p<0.001). The variation of wheat production (Y) and production increase (Y) was simulated based on the increase of the MSE ears density at harvest. Thus, by increasing the density of ears in the MSE category between 10 - 40%, production increases (Y) between 371.98 kg ha_-1 and 1,487.94 kg ha_-1 would be possible, under the conditions of an adequate cultivation technology.

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