TRENDS IN BACING PARAMETERS OF FERTILIZED WINTER-WHEAT VARIETIES

On heavily calcareous, humus rich meadow soil at the Fulopszallas Expe riment Station of the Cereals Research Institute long-term trials were set up with winter wheat varieties GK Csuros and GK Kata applying NPK macroelements in 16 conbinations. The grain yield, the wet and dry gl uten contents, the gluten spreading were studied as a function of fert ilization. According to the variance analysis of the data both the yea r, and variety and fertilizer treatments caused reliable differences i n yield, wet and dry gluten contents, and gluten spreading. The year x variety interaction was significant in case of yield and dry gluten, while year x fertilizer interaction was significant in all the four ch aracteristics. The variety x fertilizer interaction was not statistica lly reliable to any of the characteristics. The year x variety x ferti lizer interaction was significant to all characteristics except for we t gluten content. The PK treatments of 30, 60 kg/ha increased signific antly the yields of both wheat varieties as compared with 0, 0 kg/ba P K level, while the PK doses of 60, 120 kg/ha and of 120, 180 kg/ha fur ther increased the yield, but not significantly. In the wet gluten con tent as compared to 0 kg/ha N dose the N treatment of 120 kg/ha has al ways increased significantly the wet gluten content. In the dry gluten content similar trends proved to be as in wet gluten content. The glu ten spreading of GK Csuros was significantly larger than it of GK Kata . As compared to 0 kg/ba N dose, 0 kg/ha PK dose, up to 180 kg/ha N do se the rate of gluten spreading increased significantly in case of GK Csuros, while it was only trend-like in case of GK Kata.