THE YIELD AND QUALITY OF SPRING BARLEY AFFECTED BY NITROGEN FERTILIZATION DURING GROWING PERIOD PUBLISHEDEva Candráková, N. Szombathová, Jozef Smatana
pring barley malting varieties (Ebson, Malz, Nitran) and their response to environmental conditions, year and fertilization were investigated in 3-years experiment (2005 – 2007). Treatments of fertilization: 1. control, 2. LAV (ammonium nitrate with limestone) 20 kg ha -1 of net nitrogen, 3 . LAV for grain yield level of 5 t ha -1 applied at the end of shooting, 4. DAM 390 (ammonium nitrate with urea) in rate 20 kg ha -1 of net nutrient N applied at the end of shooting. The highest yields of grain were achieved in 2005 and the lowest in 2007, which demonstrated the statistically significant influence of year. The lowest yield was at control variant – 5.09 t ha -1 . The average yields of grain in 3-years period were: Ebson – 6.82 t ha -1 , Nitran – 5.74 t ha -1 and Malz – 5.46 t ha -1 . Following parameters of grain quality were evaluated: thousand kernel weight (TKW), kernels bulk density and proportion of grain over the sieve 2.5 mm.
spring barley; varieties; fertilization; yield; quality