Agroecological passport of the Novosibirskaya 31 spring soft wheat variety

Abstract

This paper discusses the agroecological passport of the spring soft wheat variety Novosibirskaya 31 that characterizes its responses to the cultivation in three districts of the Krasnoyarsk Region with a full range of intensification based on two predecessors (grain crop and fallow). The indices of seed quality, yield formula and economic characters were studied, and phenological observations were carried out. During the variety investigation from 2021 through 2023 in all study areas, the thousand-kernel weight varied on average from 32 to 40 g; the spikelet number per ear ranged from 12 to 17 pieces, the grain number per ear - 24-37 pieces, and the grain weight per ear reached 0.95-1.32 g. The average protein content in the steppe zone exceeded 18.4%, in the forest-steppe - 16.5%, and the sub-taiga zone - 14.2%. The gluten content by zones varied from 32 to 45% with increasing trend after fallow predecessor. In the steppe and forest-steppe zones, the variety forms grain of Group I regarding gluten quality; in the sub-taiga zone - Group II. The lowest grain-unit was obtained in the sub-taiga zone after a grain predecessor - 736 g L, and the highest grain-unit - in the forest-steppe after fallow - 804 g L. The yields of spring wheat of the Novosibirskaya 31 variety after the predecessors in the steppe zone of the Krasnoyarsk Region ranged from 0.36 t ha to 0.62 t ha; in the forest-steppe zone - 0.24 t ha as the second grain crop and up to 0.61 t ha after fallow; and in the sub-taiga zone, the yields of the variety reached 0.27 t ha and 0.42 t ha, respectively.