Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

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Registration certificate: PI number 77-12831 on May 31, 2002
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ISSN 1997 - 4868 (Print)

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ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 01 (155) 2017

Биология и биотехнологии

Неупокоева Т. В. кандидат сельскохозяйственных наук, доцент, Тюменский индустриальный университет

УДК:632.51

DYNAMICS OF WEED INFESTATION OF SPRING WHEAT IN GRAIN CROP ROTATION IN THE FOREST-STEPPE OF THE TYUMEN REGION

Among the factors that reduce the yield of field crops, its quality, and productivity of labor, the dominant place is occupiedby weeds. One of the most important provisions increasing the production of grain is a planned and systematic weed control,because weeds consume large amounts of nutrients, moisture, light, and cause extensive damage to crops. The research isdevoted to the integrated study of the effect of long-term main ways of tillage (moldboard, moldboard-less, differentiated,surface and zero ones) of leached black soil and herbicides on the dynamics of weed infestation of spring wheat. Tillage ofvarious depth was conducted for scientific experiment: surface tillage at 14–16 cm, deep tillage at 28–30 cm, and zero tillage.Weed infestation in spring wheat crops was taken into account before an early spring harrowing; before sowing crops; beforeapplication of herbicides; one month after treatment with herbicides; before harvesting crops; before leaving in winter afterthe main soil treatment. The use of tank-mix herbicides Puma Super 100 and Secateur in the tillering stage of spring wheatreduced weeds by 90.0–91.0 %. Dynamics of weediness of spring wheat depend on the systems of main tillage and applicationof herbicides. In the conditions of forest-steppe of the Tyumen region, the differentiated deep tillage by 28–30 cm, andthe chemical weeding of crops by tank-mix herbicides Puma Super 100 + Secateur (anti-cereal and anti-dicotyledonous) arerecommended to decrease the weed forming young type of weed infestation. The productivity of this treatment was 3.90 tonsof control items per ha in crop rotation and crop capacity 4.19 t/ha.


Keywords:

grain crop rotation with busy fallow, main tillage, tillage technology, herbicides, weed infestation.


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