Range Test 2 Flashcards
Prescribed buring
Burning under carefully planned and controlled conditions for specific purposes
Pitting
Creating cups in the soil on bare ground to hold water.
Two types of burns
Reclemation and maintenance
Why were fires stopped
Fencing, smaller units, reduction of fuel loads due to overgrazing, lack of understanding of fire.
Uses of prescribed burning
suppress brush, increase palatability, improve production, reduce wildlife hazard
How many pounds of fuel are needed for an effective burn
2500-3000
Temp for maintenance burns?
40-70F
Temp for Reclamation burns
90+
Most treacherous and least predictable in a fire?
Wind
Winds should always be below what MPH for a fire?
20 MPH
Three qualities of wind to check?
Velocity, Direction, Gustiness
Do not burn when humidity is below___ unless wind is less than ___
20% humidity and 6MPH wind
Fires move slowly on what direction of a slope?
down
Fire does what to plants for insect damages?
preconditions plants for insect damage
More seed development occurs before or after a fire?
After
How does fire effect Patasium?
Fire increases the speed of breakdown and gives it to the soil.
True or False. One burn can significantly influence organic matter content
False, it takes multiple annual burns to significantly influence it.
During a prescribed burn, soil temp rarely changes to to depths great than
2 inches
What will burning to do soil moisture loss?
Increase soil moisture loss.
Reasons for brush controll
82% of Texas has brush. 50% of it needs control for improvement
Trend factors for pasture forage
Vigor of plants, improving plant community, accumulation of litter, errosion, current degree of use
How many years of no brush control would make 0 forage production
20 years
Requirements for successful brush control
Right methods for species and area, good application job, seed source, DEFER ATLEAST ONE GROWING SEASON, and control sprouts
Forms of brush control
Mechanical, chemical, biological, controlled burning.
Types of Mechanical brush control
Hand-Grubbing, axe, IPT
Power-Treedozing chaining, railing, rootplow
Chemical- read the label
Types of chemical application
Basal Treatment
Foliage spray
Guide to Range Management
Take half leave half
How many pounds of forage are needed to prevent erosion?
Native=2000#
Sod grasses=1500
Whats important about having top growth for cover?
More cover means more water penetrations and lower soil temp
Soil temp impact on evaporation
70 degrees- all used for plant growth
100 degrees- 75% growth, 25% cooling
130 degrees- 0% growth, 100% cooling
140 degrees- all bacteria dies
Basal treatment on what kind of timber?
Single stem virgin timber
Foliage Spray on what kind of timber?
Multistem, regrowth
