• • • Mixture productivity of bird’s-foot trefoil and common timothy on strongly acid soil under variable cutting regimes
The experiment tested regimes of sward cutting for grass mixture of birdʼs-foot trefoil and common timothy in the period from 2012 to 2015. It took place on sod-podzolic soil with medium contents of loam, phosphorus, potassium and pH 3.8. Soil laid on glaciofluvial area. Grass mixture was sown in spring 2011 without cover, considering long-term cultivation. Four years of cultivation under various weather conditions revealed two-cut regime to be the best. Harvesting of first and second cuts was more effective at flowering time (content of exchange energy averaged to 65.3 GJ ha-1 for 1 year, while crude protein concentration — 0.82 t ha-1). Harvesting of first cut performed better at flowering time but the second one — at the stage of bud formation (69.5 GJ ha-1 and 1.03 t ha-1). The deadline for the last (second) cut was the third decade of August. Early cutting (especially the first one) led to decrease in sward productivity. Three-cut cultivation made important time of the last cut. Optimal time for cutting was the first decade of August or after vegetation.
Source: https://kormoproizvodstvo.ru/en/10-2017-2/, p. 11
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