Published in Scientific Papers. Series A. Agronomy, Vol. LXIII, Issue 2
Written by Stefka STEFANOVADOBREVA, Angelina MUHOVA
The aim of the study was to determine the influence of different levels of mineral fertilizing, individual and combined, on grain yield and some structural elements of productivity. In the field experience for the period 2016-2018 the following mineral fertilization levels were used: N and P - 0, 40, 80, 120 and 160 kg/ha; K - 0 and 80 kg/ha. A maximum increase in the values of the studied parameters was established at the following fertilization rates: number of grains per spike at N160P160; grain weight at N80P160; length of spike at N160P120; spikelets number per spike at N120; plant height at N120. Highest grain yield was reported at N160P80. Correlation analysis showed a strong and proven connection between grain yield and the traits surveyed. The strongest correlation connection was between the number of grain per spike and the grain weight (r = 0.789**).
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