The sowing year's harvest and nutritive value of red clover mixed with grasses
2002
Tamm, U. | Tamm, S. | Valgus, T. (Academical Agricultural Society, Tartu (Estonia))
The yield of red clover remains usually modest during the sowing year. Respective forage has a low dry matter content, a high protein content and a high nutritive value. The yield of red clover may increase by adding rapidly growing grasses to the seed mixtures, its mixtures facilitate preventing lodging and reduce harvesting losses. Red clover's pure stand was compared to various mixed sowings. The mixedsowings were composed by adding the following grasses to pure red clover annual ryegrass 'Varpe', Italian ryegrass 'Ajax', timothy 'Goliath', and smooth bromegrass 'Lincoln'. Two cuts were taken during the sowing year. The added annual ryegrass developed the fastest. It constituted 37...41 per cent of the harvest of the first cut and 17...20 per cent of the harvest of the second cut. Italian ryegrass constituted 36...40 per cent of the harvests of the first and the second cut, timothy and smooth bromegrass each 15...30 per cent. The average metabolizable energy content was 10.6 MJ kg-1 in red clover pure stand. It decreased with the addition of grasses and was 10.4 MJ kg-1 in timothy mixture, 10.0 MJ kg-1 in Italian ryegrass mixture and smooth bromegrass mixture, and 9.8 MJ kg-1 in annual ryegrass. The grasses also reduced the metabolizable protein content of forage. The protein balance value was high in red clover stand (41g kg-1), but became more favourable in the mixture with grasses (12...20g kg-1)
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