TY - JA AU - Mazurek,J. TI - Termin i ilosc wysiewu oraz nawozenie azotem pszenicy jarej. 1. Wplyw na plon ziarna SN - 0552-9778 U1 - 83-889579 PY - 1981/// KW - Fertilizers KW - AGROVOC KW - Plant production KW - Wheat triticum spp KW - Soil fertility KW - Nitrogen fertilizers N1 - 9 tab.; 25 ref. Summaries (En, Ru) N2 - Objective of the study was to determine the effects of two sowing terms (early and late), two sowing rates (4,5 and 6,0 mln grains/ha), and four nitrogen fertilization rates (0, 80, 120 and 160 kg/ha N) on grain yields of two spring wheat varieties (Alfa and Kolibri) grown on a field which was previously cropped to either cereals or root crops. No interaction was found in the studied varieties between time and rate of sowing and N fertilization. Late sowing strongly reduced grain yields in both varieties. Spring wheat responded with maximum yields to N rate of 80 kg/ha. (author) T2 - Pamietnik Pulawski ER -