When stock water appears abundant and water quality has been consistent in previous years, it’s easy to focus on other things but don’t overlook water testing. Poor quality stock water can lead to reproductive inefficiency, poor gains, disease and in extreme circumstances, death. Even when water supplies appear abundant, stock water may contain high levels of sodium, sulphates or other compounds that lead to toxicity.
Photo credit, Tamara Carter
Water quality can be especially variable in surface water sources, such as dugouts, ponds or dams, and weather doesn’t necessarily need to be hot and dry to warrant regular testing. Precipitation levels in the previous years, groundwater recharge, runoff conditions, evaporation levels and adjacent land use can all impact water quality in both the short- and long-term.
It’s also important to monitor well water conditions. Quality in well water can change quickly, even if wells have had suitable water in the past.
This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the May 2021 issue ofCanadian Cattlemenmagazine and is reprinted on the BCRC Blog with permission of the publisher.
Pasture plants are generally classified as decreasers, increasers and invaders. Decreaser species are the plants you want to see and your cattle prefer to eat, so they face the most grazing pressure. Increaser plants tend to thrive when the decreaser species are challenged by overgrazing, drought or other sub-optimal conditions. Invaders (weeds) proliferate when increasers and the remaining decreasers are so weakened by overgrazing or environmental extremes that they have a hard time competing for nutrients, water and sunlight.
Healthy, productive pastures are dominated by decreasers. The composition of the decreaser community in healthy native rangelands was shaped by thousands of years of natural selection and environmental pressures. In tame pastures, humans take the wheel from Mother Nature as we seek to establish and maintain a stand of tame decreaser species that can be productive and long-lived in our particular soil and climate conditions. In both native and tame pastures, good grazing managers adjust stocking densities, grazing intensities, grazing and rest period length and frequency, etc. based on annual and seasonal variations in growing conditions to maintain pasture health and optimize long-term forage and animal productivity. Continue reading →
Recurring droughtis a natural part of the climate in many areas of Canada and creates a challenge when managing grazing and forage resources. Although droughts are often unpredictable, they are inevitable, meaning they are often at the back of every producer’s mind. Long-term farm and ranch management must include planning for and consideration of how drought will affect the entire system – including plants, livestock and water sources.
Eight tips for drought management
When managing through a drought, consider combining groups of animals to encourage grazing of less desirable plants and grazing pastures with species that are more tolerant of increased grazing pressure. It is important to monitor for toxic or poisonous plants, which are more likely to be grazed during dry years.
Sources of water for grazing animals can quickly become limited or unavailable during drought periods. It is recommended that any pastures that could possibly run out of water be grazed first. In some cases, it may become necessary to use a portable stock water supply in order to continue grazing a forage source where water has become limited.