Sustainable Forages Podcast

AFIN Sustainable Forages Webinar Series - Effect of drought stress on plant growth in forage legumes

Effect of drought stress on plant growth, nitrogen fixation, soil nitrogen availability and soil microbial diversity in forage legumes presented byDr. Malinda Thilakarathna, Department of Agricultural, Food and Nutritional Science, University of Alberta
Drought stress poses a significant challenge to forage production, making it crucial to better understand how forage plants respond to this stress. Forage legumes engage in beneficial partnerships with specialized soil rhizobia bacteria, residing in root nodules and aiding inatmospheric nitrogen fixation. However, legumes are vulnerable to drought stress, impacting nodulation and symbiotic nitrogen fixation. In our study, we assessed the effects of drought stress on nodulation, plant growth, physiological parameters, nitrogen fixation, soil nitrogenlevels, and soil microbial diversity in alfalfa and red clover using a greenhouse pot experiment.
Drought treatments, simulating severe, moderate, and well-watered conditions, were applied during the flowering stage. The results showed significant reductions in nodulation, root and shoot growth, and nitrogen fixation under drought conditions, particularly in severe drought.
Interestingly, severe drought led to increased soil available nitrogen, and the soil microbial community exhibited changes in the abundance of key bacterial groups. Overall results indicate that drought has deleterious effects on nitrogen fixation and plant growth, affecting soil nitrogen availability and soil microbial diversity.

AFIN Webinar - Drought Resilience and Perspective – Canadian Prairies

Join us for a chat about the current drought situation in Alberta and the mental health impacts it can have on those facing difficult decisions and stresses. Program Director Linda Hunt from AGKNOW will join us to discuss strategies for cow calf operations to deal with potential drought, including coping with the mental stresses that can arise. We'll explore solutions for challenges such as selling off part of a herd, purchasing expensive feed, and managing short and long term financial stress caused by drought.

AFIN Sustainable Forages Series - Sainfoin: A beneficial companion forage crop for your favourite perennials

There has been a renewed interest in sainfoin among western Canadian forage and beef-cattle producers over the last decade. A major trigger for this growing appeal has been the availability of new sainfoin cultivars (Mountainview and Glenview) that have increased compatibility with alfalfa. Grazing alfalfa sainfoin mixed pasture can eliminate alfalfa pasture bloat which costs ~ $30 to $50 million per year to the Canadian cattle producers. Recent research indicates that these new sainfoin cultivars also exhibit compatibility with perennial grass species, further expanding their potential benefits. This seminar will review historical sainfoin breeding activities and highlight current progress on the compatibility of sainfoin with perennial forages and prospects of sainfoin as a sustainable livestock feed.
Dr. Hari Poudel is a forage breeding research scientist at AAFC’s Lethbridge Research and Development. He has more than 10 years of forage breeding experience acquired through graduate and post-graduate research across different forage breeding programs in North America. His research interests are centered around the improvement and development of forage cultivars through phenotypic and genomics-assisted breeding. He currently devotes his expertise to enhancing forage cultivars tailored to the specific needs of the Western Canadian context by effectively addressing the challenges posed by changing climatic conditions. He is committed to applied research that directly benefits all the stakeholders of the forage industry in Alberta.

AFIN - Dr. Ed Bork presents An Overview of Work on Integrated Weed Control in Pastures

Pasture weeds can markedly reduce forage quantity and availability, and are often a function of grazing practices. Understanding the options available to achieve weed control in grazed land is important, and often includes the integration of different management tools, such as herbicides, managing pasture fertility, and the deliberate use of rotational grazing to directly and indirectly control unpalatable weeds. This seminar will review nearly 20 years of research into the control of Canada thistle on pasture in central Alberta, including integrated weed control

AFIN Sustainable Forages Series - Resilient Agriculture Landscape Program (RALP)

The AFIN Board of Directors has decided to run a series of science-related webinars for the benefit of producers and other interested parties. To start with we thought we will have a session about the new Resilient Agriculture Landscape Program (RALP) which is intended for our producers and can bring up to $150,000 per producer for the next 3 years. This webinar is presented by Giselle Ulrich, BSc, PAg