• • • Longevity and productivity of lawn gramineous in fodder production
Investigations took place in 2003–2015 to test resistances of lawn gramineous. Monoculture of red fescue had the best longevity, while creeping bentgrass — the worst, it dropped out of the mixtures completely after 8 years. Perennial ryegrass survived in mixtures due to its natural seed formation. Red fescue prevailed in grass mixtures after 6–8 years. Bluegrass had high potential of vegetative reproduction and prevailed both in two-component mixture with creeping bentgrass and after the latter died. Bluegrass proportion made up 78.7 and 73.1%, respectively. Lawn gramineous formed dense but short swards showing low productivity. In the 12–13th year dry mass yield varied within 1.35–2.35 t ha-1 despite the application of 60 kg ha-1 of N. In the 2nd year grasses formed swards of high density — up to 17 thousand shoots per 1 m2, but their average height made up 12–16 cm and their productivities were low (6.16–11.19 t ha-1 of green mass in 2018). Old two- and four-component swards formed good sod layer of 12.5–16.3 cm. In the 12th year monocultures formed sod layers from 7.3 cm (perennial ryegrass) to 11.7 cm (red fescue). Lawn grasses were ineffective due to its low productivity.
Source: http://kormoproizvodstvo.ru/en/2-2019-2/, p. 8
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