• • • Continuous cultivation of spring wheat on the Trans-Ural chernozem
The paper reports on long-term field trial, comparing the effectiveness of continuous cropping to fallow-wheat rotation in the forest steppe of Trans-Urals. Continuous growing of spring wheat were similar to the second and third wheat cultivation after the fallow treatment in availability of spring water and nitrate N (27.8–34.6 kg/ha). In addition, annual plowing gave higher values, compared to surface tillage. Continuous cropping showed no decrease in plant health when systematically fertilizing and treating with herbicides. Yield of continuous wheat for 1969–2017 averaged to 1.31–1.61 t ha-1 under plowing, being the lowest in the experiment, while surface tillage in 2007–2017 resulted in 1.16–1.46 t ha-1. Continuous wheat had similar values in grain production per 1 ha with fallow-wheat rotation on the background of N40, N60 and herbicide application, exceeding the latter by 0.04–0.18 t ha-1 under plowing and by 0.10–0.25 t ha-1 — under surface tillage in the last rotation periods. Growing wheat in rotation with fallow on the background of surface tillage and annual chemical treatment showed to be the most economically effective.
Source: http://kormoproizvodstvo.ru/en/7-2018-2/, p. 20
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