Economic value of spring barley varieties depending on the predecessor in the conditions of the northern forest-steppe of the Tyumen region

In 2014-2017 studies were carried out on the experimental field of the State Autonomous Agrarian University of the Northern Trans-Urals in the northern forest-steppe of the Tyumen region to study the effect of predecessors on the yield of seeds of barley varieties Vorsinsky 2, Chelyabinsky 99, Acha, Abalak. It has been established that barley varieties formed a yield of 1.35-1.50 t/ha according to the predecessor wheat. At the same time the Abalak variety stood out for the better. According to the predecessor of peas, the seed yield increased to 2.04-2.30 t/ha. The varieties Acha and Abalak were more productive, the increase to the control variant was 0.80-0.81 t/ha, or 54.1-55.9%. The maximum yield of seeds of the studied barley varieties was obtained using the pure fallow predecessor and amounted to 2.27-2.41 t/ha which is 0.89-0.98 t/ha, or 59.3-68.7% higher than the control variant. In terms of seed yield the corn predecessor occupied an intermediate position between the predecessors of peas and pure fallow.