This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the September 2021 issue ofCanadian Cattlemenmagazine and is reprinted on the BCRC Blog with permission of the publisher.
Today’s research won’t help you weather this year’s drought, but the practical information and advice you’ll read elsewhere in this issue (and at www.beefresearch.ca) will. Those pasture management, early weaning, creep-feeding, feed and water testing, alternative feeds and ration balancing tips all originate from past research done by scientists and refined by producers. But producer-funded research underway today will help us cope with future droughts.
Crops, pastures and haylands throughout Western and Central Canada are parched. In a lot of places, the only green and thriving forage plants are forage legumes like alfalfa, vetches, trefoil, sweet clover and sainfoin. Legumes have specialized roots that allow them to capture nitrogen from the air and convert it into plant protein. This improves soil fertility and forage and animal productivity. Their root systems can also extend very deep into the soil and allow them to access subsoil moisture that shallow-rooted plants can’t reach during times of drought. Canada’s forage researchers are working hard today to develop tomorrow’s forage varieties and management practices that will improve productivity, nutritional quality and resilience under challenging environmental conditions. Continue reading →
This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the May 2019 issue ofCanadian Cattlemenmagazine and is reprinted on the BCRC Blog with permission of the publisher.
Photo credit to Agriculture Agri-Food Canada
Forage legumes provide high yields, protein, and good animal performance while improving soil fertility by fixing nitrogen from the air. Alfalfa is the highest yielding and most widely-used legume but can cause bloat. Legumes like cicer milkvetch, sainfoin and birdsfoot trefoil do not cause bloat. As little as 25% sainfoin in a pasture can virtually eliminate the risk of bloat even if the other 75% is alfalfa.
The problem is that older sainfoin varieties don’t regrow as fast as alfalfa after grazing. Alfalfa’s aggressive nature allows it to outcompete sainfoin for sunlight, moisture and nutrients. Without careful grazing management, sainfoin can disappear from a pasture in a few years. This might be because plant breeders have traditionally selected new varieties for clipped forage yield under monoculture conditions. This doesn’t reflect the challenges sainfoin faces when grown with alfalfa and grazed.