Reaction of selected winter wheat varieties on fertilization in yield and quality grain
2005
Ruckschloss, L.(Vyskumny ustav rastlinnej vyroby, Piestany (Slovak Republic) | Uzik, M.Vyskumny ustav rastlinnej vyroby, Piestany (Slovak Republic) | Zofajova, A.Vyskumny ustav rastlinnej vyroby, Piestany (Slovak Republic) | Bielkova, S.Vyskumny ustav rastlinnej vyroby, Piestany (Slovak Republic))
In stationary trial with 12 fertilization variants the set of 5 winter wheat varieties (1- Viginta, 2 - Estica, 3 - Astella, 4 - PS 9/00 - Veldava. 5 - PS 20/00 - Pavla) was evaluated in the years 2001/02, 2002/03 and 2003/04. At grain yield, year, fertilization, variety and interactions among them were significant source of variability. The highest grain yield was at variant with 120 kg N, 60 kg P2O5 and 60 kg K2O.haE-1. The highest increase of yield by nitrogen was at new varieties (29.67 kg of grain . kg NE-1 Veldava, respectively 23.8 kg Pavla, in comparison to Estica with 15.08 kg or Viginta 15.75 kg). Protein content at N 120 kg was higher than at complete NPK fertilization. The lowest response to N fertilization (in protein content) had Veldava (increase 2.56 %), on the contrary to Estica 3.49 %.
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