The paper presents the results of strict field experiments of irrigation and nitrogen fertilization of winter oilseed rape variety "Californium" conducted in years 2007-2010 at the Research Station of the Faculty of Agriculture and Biotechnology, University of Technology and Life Sciences in Mochełek near Bydgoszcz on sandy soil. In each season of spring vegetation have appeared needs of water supplementation using irrigation, an average of 93 mm were used (pri-marily in May and June), but during the years of research the dose ranged from 55 mm in 2009 to 150 mm in 2008. Two doses of nitrogen fertilizer were used: 125 i 200 kg.ha-1.On average, in the years of the research the rape yielded at the level of 4.41 t.ha-1. Applied the factors resulted in increased yield: irrigation of 1.13 t.ha-1 (29.3%) and nitrogen fertilization, of 0.37 t.ha-1 (8.7%). The largest increase in rape seed yield due to irrigation (1.27 t.ha-1) was obtained in 2008, using the highest dose of water (150 mm). The smallest (55 mm) dose of irrigation water in year 2009 brought the largest (21.6 kg) efficiency of 1 mm of the water. Irrigation resulted in a substantial, compared to fertilization, improvement of yield compo-nents, increasing ...
The objective of this research was to examine the concentrations of crude protein, P, K, Mg, Fe, Mn and Zn of 5 triticale genotypes and 2 barley cultivars (two-row) at different growth stages. The experiments were carried out at Süleyman Demirel University farm in Isparta during the growing season of 2012-2013. Three hexaploid triticale lines (SDÜ-21, SDÜ-27, SDÜ-43) and 2 cultivars (Karma-2000 and Tatlıcak-97), and two-row barley cultivars (Hamidiye and Cumhuriyet) were used in the experiment. The experimental design was a randomized split block design with three replication. The genotypes were used as main plots and growth stage were used as sub-plots. The basic pre-sowing fertilization rates for all plots were 30 kg N·ha-1 and 50 kg P·ha-1, the rest of 30 kg N·ha-1 was applied at the early spring (stem-elongation stage). Plants were harvested at four stages, stem elongation, milk development, dough development and mature stage. Samples taken from each plot were dried to constant weight at 65°C in oven. After cooling, the samples were milled for crude protein and mineral element analyses. According to the results of variance analysis, the nutrient concentrations of triticale and barley genotypes showed variations depending on the genotypes and different growth stages. The ...
