Abstract

In 2019-2020, the quality of lawn-type grass mixtures based on creeping clover (Trifolium repens L.), meadow fescue (Festuca pratensis), pasture ryegrass (Lolium perenne) and meadow bluegrass (Poa pratensis) was evaluated in the conditions of the forest-steppe of the Middle Volga region (Penza region). The studied factors are the composition of the mixtures (creeping clover + bluegrass component), the seeding rates of the components (40 + 70 %; 55 + 55 %; 70 + 40 %) and the background of mineral nutrition (without fertilizers, P45K45, N30P45K45). The growing season during the years of research was characterized by arid conditions, the hydrothermal coefficient (HTC) for the period May-September in 2019 was 0.79, in 2020 - 0.76. On average, over two years of grass mixtures of creeping clover with meadow bluegrass at a seeding rate of 40 + 70 % and 70 + 40 % (from the seeding rate in pure form), creeping clover with meadow fescue with a seeding rate of 70 + 40 % components at all doses of mineral fertilizers had the highest comprehensive assessment of the quality of the lawn. The grass mixtures of creeping clover with meadow bluegrass (70 + 40 %) and creeping clover with meadow fescue (70 + 40 %) against the background of application of N30P45K45 had the maximum indicators in terms of herbage density (1425 and 1475 pcs/m2), which significantly exceeded the control and the variant with the introduction of Р45К45. In these variants, the highest indicators of projective cover (97.5 %) and a comprehensive assessment of "excellent" and "highest quality". According to weediness, the crops were estimated at 1 point (slightly weedy), per 1 m2 of annual and biennial weeds there were 24-27 pcs., rhizome weeds - less than 10 pcs. per 1 m2, the area of weed projective cover did not exceed 5 %.

Highlights

  • Evaluation of grass mixtures of a lawn type in the conditions of forest-steppe of the Middle Volga region

  • In 2019-2020, the quality of lawn-type grass mixtures based on creeping clover (Trifolium repens L.), meadow fescue (Festuca pratensis), pasture ryegrass (Lolium perenne) and meadow bluegrass (Poa pratensis) was evaluated in the conditions of the forest-steppe of the Middle Volga region (Penza region)

  • The growing season during the years of research was characterized by arid conditions, the hydrothermal coefficient (HTC) for the period May-September in 2019 was 0.79, in 2020 − 0.76

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Summary

Оценка травосмесей газонного типа в условиях лесостепи Среднего Поволжья

В 2019-2020 годах проводили оценку качества травосмесей газонного типа на основе клевера ползучего (Trifolium repens L.), овсяницы луговой (Festuca pratensis), райграса пастбищного (Lolium perenne) и мятлика лугового (Poa pratensis) в условиях лесостепи Среднего Поволжья (Пензенская область). Таблица 2 – Количество сорняков у клеверо-мятликовых травосмесей в зависимости от нормы высева компонентов и фона минерального питания, шт/м2 (в среднем за 2019-2020 гг.) / Table 2 – The number of weeds in clover-cerealgrass mixtures depending on the seeding rate of components and the background of mineral nutrition, pcs / m2 (on average for 2019-2020). В травосмеси клевера ползучего с райграсом пастбищным комплексная оценка газона была «отличной» в вариантах с нормой высева компонентов 55 + 55 % и 70 + 40 % при дозе внесения удобрений N30Р45К45. Таблица 3 – Комплексная оценка качества клеверо-мятликовых травосмесей в зависимости от нормы высева компонентов и фона минерального питания (в среднем за 2019-2020 гг.) / Table 3 – Comprehensive assessment of the quality of clover-cereal grass mixtures depending on the seeding rate of components and the background of mineral nutrition (on average for 2019-2020)

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