Guest Lecture - Range Management Flashcards
(23 cards)
rangelands
uncultivated land that provides the necessities of life for grazing and browsing animals
rangeland requirements
- serve as food for animals
- shouldn’t be cultivated (regardless of management)
difference between pasture and rangeland
rangeland - supports native vegetation and is extensively managed
pasture - lands seeded to introduce or native species, which are intensively managed
range health
the ability of rangelands to maintain function and services
parts of range health
- forage for livestock and wildlfie
- biodiversity conservation
- nitrogen fixation/nutrient cycling
- carbon sequestration
- soil conservation
- water filtration and flow management
- recreational opportunities
traditional range management
work to maximize range health by evenly utilizing the landscape
how is range health assessed in sk
- species composition
- vegetation structure
- invasive species
- site/soil stability
- hydrological function and soil protection
rangeland is assessed in sk relative to ___________
reference condition
range health is considered high when the litter is ____
high
common range management tools
- set appropriate stocking rates
- grazing systems
- adjust location of water points/minerals/ supplements
- stockmanship
- weed management
how to set appropriate stocking rate
- match the number of animals to the condition of the land
- requires understanding forage production and utilization
what is a grazing system
moving animals around a subdivided pasture to ensure even livestock distribution
continuous grazing systems
singe pasture, season-long grazing with non forced movement among pastures
rotation systems
delay grazing until after set time to allow forage species to reproduce
management intensive systems
more smaller pastures with more rotations that strive for uniform use
types of grazing systems
- management intensive systems
- rotation systems
- continuous grazing systems
types of weed managment
cultural
chemical
biological
mechanical
cultural weed management
prevent them from getting established in the first place
chemical weed management
- many herbicides, few modes of action
- non-target effects and resistance development a concern
biological weed management
introduce pests from native range and use targeted grazing
mechanical weed management
mowing, pulling, and digging
main weeds in rangelands
leafy spurge, common tansy, and absinthe
chemical control of leafy spurge
many chemicals effective (such as 2,4-D and glyphosate for short term, navius and tordon for long term control)
