Posts Tagged: Grasses - General
Over the last few years Californians have grappled with how to manage lands during times of both drought and plentiful rainfall. At SFREC and on Central Valley rangelands, one question is whether management that promotes high forage in wet years alters...
Figure 2. Total cover and biomass responses to rainfall and grazing legacy over three years (± SE). Dark squares indicate a legacy of moderate grazing – which created a diverse mix of grass and forb species - and light circles indicate a legacy of low grazing – which shifted the community to only dominant grasses.
Figure 3. a) Rainout shelters at the Sierra Foothill Research and Extension Center, Browns Valley, CA. b) Treatment effects on soil moisture over time.
Figure 1. a) Grazing legacies were created over four years using a combination of mowing and trampling. Here cows are herded in the “moderate grazing” treatment. Photo credit: W. Stanley Harpole. b) Rainfall conditions were altered using shelters and irrigation to create wet and dry conditions, replicated across areas with experimentally-created legacies of low and moderate grazing. Photo credit: Lauren Hallett.
The Sierra Foothill Research and Extension Center in Browns Valley, CA utilizes 130 acres of summer irrigated pasture for cattle grazing. SFREC's irrigation water is supplied by a local water district via pipelines and open ditch distribution...
Figure 1: H11-21, Cage B, 4-6 inches treatment on the left and Total Forage Production treatment on the right. Photo credit: Nikolai Schweitzer
Figure 2: H11-21, Cage B removed. Photo credit: Nikolai Schweitzer
Figure 3: H11-21, Cage B. Measuring forage production leaving 4-6 inches. Photo credit: Nikolai Schweitzer
Figure 4: H11-21, Cage B. Measuring Total Forage Production. Photo credit: Nikolai Schweitzer
Figure 5: H11-21, Cage A. 4 to 6 in. treatment on the left. TFP treatment on the right. Species composition is significantly affected by grazing residue. Photo credit: Nikolai Schweitzer
Fagure 6: SFREC irrigated forage production in 2016. TFP (Total Forage Production), 4 to 6 (Amount of forage left standing). By Nikolai Schweitzer