Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Alex Emanuel PRIVANTU, Emilia CONSTANTINESCU, Gabriela PĂUNESCU, Aurel Liviu OLARU
A trifactorial trail hybrid maize x level fertilization x biostimulants treatment (Instinct and Utrisha) was placed on the chernozem from Caracal in the spring of 2023. The doses of urea administered at sowing were 50, 100, 150 kg/ha, and the graduations of the biostimulator treatment factor consisted of untreated, Instinct 1 L/ha + Utrisha 250 g/ha, Instinct 1.7 L/ha + Utrisha 333 g/ha and Instinct 2.5 L/ha + Utrisha 400 g/ha. The greatest plats height was recorded in the first two weeks in the variant treated with Instinct 2.5 L/ha + Utrisha 400 g/ha, regardless of the maize hybrid and the dose of urea used - 182%. In the next measurement interval, the height decreased, but the highest value was also recor-ded in the previous variant and with the recommended dose - 47%. At the last measurement, the height was greatly diminished (under 20%) and the variants treated with Instinct and Utrisha, regardless of the dose, did not emphasized significant differences. Urea fertilization did not affect the plants height at any of the measurement moments.
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