Published in Scientific Papers. Series A. Agronomy, Vol. LXIV, Issue 2
Written by Vera GUSHCHINA, Aleksey VOLODKIN, Natalya OSTROBORODOVA, Alexander SMIRNOV
Deforestation without their subsequent restoration leads to the disruption of natural ecosystems. This led to the need to create fast-growing artificial plantations. From this point of view, heightened interest is shown in the plant of the bluegrass family - the giant miscanthus. As a renewable source of raw materials, it can become an alternative to forest crops. Differing in slow growth in the initial period, miscanthus weakly competes with weeds. Therefore, the purpose of the research was to determine the optimal way to combat weeds, ensuring the creation of a highly productive agrocenosis of Miscanthus giant in the forest-steppe of the Middle Volga region. In this regard, in 2015-2017. on the light gray soil of the experimental plot of the Penza State Agrarian University, a field experiment was laid on agrotechnical and chemical measures to control weeds in the culture of miscanthus. On average, over three years, the use of herbicides Magnum and Ballerina against the background of Tornado improved the conditions for the formation of leaves and before leaving for winter their area was the largest 18.36 and 19.09 thousand m2/ha, respectively, FP 496.1 ... 508.7 thousand .m2 • day/ha, NPF decreased to 0.01 ... 0.08 g/m2 • day. due to shading and death of the lower leaves. The maximum yield of dry matter of 2.96 t/ha was obtained with a double herbicide treatment. The main component that forms the frame of a plant is cellulose, the content of which in the aboveground mass was 56.96 ... 60.57%. The mass fraction of crude ash did not exceed 4.59%, potassium and calcium in it was 0.54% and 0.2%, respectively, the amount of nitrogen was 0.87%.
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