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In this work we bring the results of the new Timiryazevskaya 42 triticale cultivar potential productivity analysis at different amount of nitrogen fertilizer application. Field experiments held in between 2016 and 2018 on podzol soil showed that increase of fertilizer dose led to the increased yield from 14% to 140%. Timiryazevskaya 42 variety is responsive to the high levels of mineral fertilizer. Dose equal to 150 kg of active ingredient (AI) per 1 hectare (ha) applied during sowing forms an average 12,5 tons per hectare yield of grain. Analysis showed that by using two parameters spike realization coefficient (SRC) and spike mass in the bloom, one can predict the yield maximum and the level of plant potential realization in the middle of vegetation period. Wherein, under favorable weather conditions, the dependence of the studied parameters and the obtained biological productivity at different doses of nitrogen fertilizers is much higher. In 2018, Timiryazevskaya 42 showed the greatest dependence (r = 0.82) of yield on SRC. A study of the formation of crop structure elements showed that the highest correlation (average for three years) was found between biological productivity and the amount of grain per spike (r = 0.62), and between biological productivity and productive bushiness (r = 0.89). Keywords— spring triticale, potential productivity, biological productivity, nitrogen fertilizers, spike realization coefficient

Potential Productivity Analysis of the Timiryazevskaya 42 New Spring Triticale Cultivar at Nitrogen Fertilizer Application