Effect of cutting regimes on forage yield and quality of cool-season grass-legume mixtures
A field experiment was conducted at the Agricultural Experiment Station, in Rio Grande do Sul state, Southern Brazil, with mixtures of ryegrass (Lolium multiflorum Lam.) cv. Estanzuela 284 + arrowleaf clover (Trifolium vesiculosum Savi) cv. Yuchi with or without ‘Coronado’ oats (Avena byzantina Koch.) or rye (Secale cereale L.). ryegrass + white clover (T. repens L.)+ birdsfoot trefoil cv. São Gabriel (Lotus corniculatus L.) and oats + ryegrass + crimson clover (T. incarnatum L.) that were subjected to two cutting regimes (four and six-week intervals), from June 1977 to February 1978. Total dry matter (DM), digestible dry matter (DDM), digestible organic matter (DOM) and crude protein (CP) yields of the mixtures were determined. Mixtures of ryegrass+ arrowleaf clover with or without oats or rye, at both harvesting regimes, showed the greatest DM, DDM, DOM and CP yields, compared to the mixtures: oats + ryegrass + crimson clover, and ryegrass + white clover+ birdsfoot trefoil. There was a tendency of the mixtures to show higher DM, DDM, DOM and CP yields, and lower CP content, at the six-week cutting regimes compared to the four-week regime. At both cutting regimes, total DM yields of arrowleaf clover was highly superior to that of crimson clover. As an average over the two cutting regimes, arrowleaf clover yielded thirteen times more DM than crimson clover. Birdsfoot trefoil benefited notably from the six-week cutting interval. The in vitro dry matter digestibility (IVDMD) and organic matter (IVOMD) of all mixtures, was even and hight, averaging 71.7 and 71.6%, respectively. The CP content, was high, averaging 19% over both cutting regimes, being higher at the four-week cutting regime.
| Main Authors: | , |
|---|---|
| Format: | Digital revista |
| Language: | por |
| Published: |
Pesquisa Agropecuaria Brasileira
2014
|
| Online Access: | https://seer.sct.embrapa.br/index.php/pab/article/view/16574 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|