The influence of agrotechnical factors on the development of barley root rots in the conditions of Krasnoyarsk forest-steppe

The studies were carried out in a grain crop tillage rotation with the following alternation of crops: green manure fallow - spring wheat - barley - cornwheat in field stationary experiment on the territory of educational and experimental farm "Minderlinskoye" of FSBEI ‘Krasnoyarsk State Agrarian University’. Leached chernozem was chosen as the object of the study. Barley was sown on two backgrounds - without fertilizer and fertilized. Ammonium nitrate was introduced as a mineral fertilizer in a dose of 34.7 kg / hectare a.s. The predecessor of barley was spring wheat, sown on sideral rapeseed fallow. The research has established a decrease in the incidence of barley underground organs when placed according to the variant with flat-cut loosening, minimal processing and dumping plowing in comparison with the variant without performing the main tillage. On the background of the introduction of mineral nitrogen fertilizers, the development of root rots on stubble samples of barley in the autumn period of 2017 decreased to 36...