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Introduction to forage systems
part of test 1
118
Agriculture
Undergraduate 4
01/06/2017

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Term
Some things involved in a forage system
Definition
-soil and its characteristics
-the plant
-the animal that eats the plant
Term
Animal harvested forage
Definition
forage directly eaten by the animal
Term
Types of animal harvested forages
Definition
-pasture
-range
Term
pasture forage usually includes...
Definition
improved forages
Term
range forage usually includes...
Definition
native forages
Term
Types of machine harvested forage
Definition
-fresh harvested
-preserved harvested
Term
Some types of fresh harvested forages
Definition
greenchop
Term
Some types of preserved harvested forages
Definition
-Hay
-Haylage
-Silage
Term
haylage
Definition
wet forage that's harvested and wrapped in plastic to be silage
Term
Some types of forage lands
Definition
-forages on crop land
-permanent pastureland
Term
Example of forages on crop land
Definition
a corn-alfalfa rotation
Term
Forages can be harvested for ______ or...
Definition
hay
grazed by livestock
Term
CRP
Definition
conservation reserve program
Term
Range lands made mostly of...
Definition
native vegetation
Term
distribution of land use in the United States
Definition
[image]
Term
Distribution of farmland in US, the darker the higher % of land
Definition
[image]
Term
Lots of farmland around Mississippi River because of...
Definition
irrigation
Term
Lots of farmland in Coastal Plain and Great Plains due to...
Definition
the land being flat and suitable for farming
Term
Map of US showing % of farmland as pastureland, the darker the higher %
Definition
[image]
Term
2 factors that help define a forage program
Definition
geography
animal
Term
Map of US showing % of farmland that’s harvested forages, the darker, the higher %
Definition
[image]
Term
Some forage-livestock industries in GA
Definition
-beef
-dairy
-cash hay
-horses
-sheep and goats
Term
types of beef in Georgia
Definition
-Cow/calf
-Grassfed finishing
Term
types of dairy in Georgia
Definition
-Confinement
-Grazing-based
Term
types of cash hay in Georgia
Definition
-Bermudagrass
-alfalfa
Term
the dominant species of cash hay in Georgia
Definition
Bermudagrass
Term
some details about Bermudagrass
Definition
-Not native, it withstands harsh weather -Low quality; it’s a C4 grass
Term
this drives the components of the forage-livestock system
Definition
the economy
Term
historical grasslands in the US
Definition
[image]
Term
the predominant shrub out West
Definition
alitrax, which is not that great for livestock
Term
one type of tall grass in the Midwest
Definition
switchgrass
Term
the ideal amount of acres per cow/calf pair
Definition
You want somewhere around 1-1.5 acres per cow/calf pair
Term
current grasslands in the US
Definition
[image]
Term
one detail about the climate in the shrub/steppe region
Definition
not much rain
Term
this state is considered the grass seed capital of the world
Definition
Oregon
Term
some plants that are good for livestock
Definition
Lots of alfalfa and forage and such are good for livestock
Term
when fescue provides forage
Definition
when Bermudagrass is dormant
Term
when Bermudagrass is dormant
Definition
autumn/winter
Term
Forages are important in...
Definition
rations
Term
why concentrates need to be reduced
Definition
because concentrates are more expensive than forages
Term
concentrates
Definition
it seems that concentrates are materials diverted away from people
Term
the dairies that are more environmentally friendly
Definition
grazing dairies
Term
a forage that's a good source of protein
Definition
alfalfa
Term
Jefferson brought alfalfa to the US in...
Definition
1775
Term
Cheaper to produce animals on ______ than on ______
Definition
forages
corn and concentrate
Term
Components of a forage system
Definition
-soil
-forage plants
-production characteristics
-grazing animals
Term
depiction of the cycling between the components of a forage system
Definition
[image]
Term
some important characteristics of soil
Definition
-Texture
-Structure
-Cation exchange capacity
-Water holding capacity
-Depth
-Parent material
-Tolerance of animal or equipment traffic
Term
soil texture
Definition
relative proportions of sand, silt, or clay
Term
soil structure
Definition
arrangement of soil particles into groupings (granular, blocky)
Term
why compaction is bad
Definition
because it makes it hard for plants; problem on clay soil
Term
soil on which compaction is a problem
Definition
clay soil
Term
why the soil here is acid
Definition
parent material
Term
some factors to consider when growing forage plants
Definition
-Water
-Nutrients
-Atmospheric gases
-Sunlight
-Temperature
Term
Some factors in the regrowth of forage plants
Definition
-Residual leaf area
-Stored reserves
Term
why residual leaf area is important
Definition
because it needs to be able to grow back
Term
Some things that affect the yield, persistence, and composition of a forage
Definition
-Plant species – Cultivar choice
-Stress and disease tolerances; important for resistance
-Cell wall structure – Cell and tissue types
-Maturity
-Bloat inducing?
-Presence of deleterious compounds?
Term
something legumes can cause in animals
Definition
bloating
Term
deleterious
Definition
causing harm or damage
Term
persistence
Definition
how many years that plant is out there
Term
Some things to consider regarding animal utilization in forage systems
Definition
-Animal nutritional needs
-Seasonal forage distribution
-Palatability (weather the animal like it or not)
-Species composition (important for pastures)
-Growth and removal rates
Term
Some problems with overgrazing
Definition
-Intake limited
-Low animal gain and production
-Low $ return per acre
Term
Some problems with undergrazing
Definition
-Old forage has low nutritive value
-Selective grazing
-Low $ return per acre
Term
some things a good forage system will do
Definition
-Match animal nutritional needs throughout the year
-Optimize animal production for forage produced
-Produce environmental benefits
-Provide wildlife cover and recreational opportunities
Term
why you want complementary forage species in a forage program
Definition
you want them for year around grazing or production
Term
why you want grass/legume mixtures in a forage program
Definition
because they can decrease fertilizer costs while optimizing nutritive value and seasonal distribution of production
Term
how a good forage system produces environmental benefits
Definition
-Limit soil erosion
-improve soil structure
-conserve water
-improve water quality
Term
EFFECT OF SPECIES RICHNESS ON GRASSLAND PRODUCTIVITY
Definition
[image]
The reason the increase is not linear is because of competition
Term
productivity of individual species vs. species richness
Definition
Productivity of individual species goes down when there’s more species richness
Term
Some characteristics of natural grasslands
Definition
-Native species predominate
-Species diverse
-Eveness of species (basically, the species know how to live with each other)
-Limited by water supply
-Low-input management (such tools include fire and grazing)
-Fragile ecosystem
-Extensive management
-Cow-calf best use
Term
Some characteristics of improved pastures
Definition
-Introduced species
-Few species
-Dominant species
-Limited by nutrients
-High-input management
-Robust ecosystem
-Multiple livestock enterprises
Term
evenness of species
Definition
species know how to live with each other
Term
some details about high input management
Definition
-nutrients
-water
-overseeding
-grazing
Term
some livestock enterprises in improved pastures
Definition
-cow/calf
-stocker
-dairy
-equine
Term
the biggest growth opportunities for improved pastures in Georgia
Definition
-stocker
-dairy
Term
one of the consequences of turning natural grasslands into arable land
Definition
wind erosion
Term
Wind erosion is one of the consequences of...
Definition
turning natural grasslands into arable land
Term
why compaction is bad
Definition
because it makes it hard for plants; problem on clay soil
Term
soil on which compaction is a problem
Definition
clay soil
Term
why the soil here is acid
Definition
parent material
Term
some factors to consider when growing forage plants
Definition
-Water
-Nutrients
-Atmospheric gases
-Sunlight
-Temperature
Term
Some factors in the regrowth of forage plants
Definition
-Residual leaf area
-Stored reserves
Term
why residual leaf area is important
Definition
because it needs to be able to grow back
Term
Some things that affect the yield, persistence, and composition of a forage
Definition
-Plant species – Cultivar choice
-Stress and disease tolerances; important for resistance
-Cell wall structure – Cell and tissue types
-Maturity
-Bloat inducing?
-Presence of deleterious compounds?
Term
something legumes can cause in animals
Definition
bloating
Term
deleterious
Definition
causing harm or damage
Term
persistence
Definition
how many years that plant is out there
Term
Some things to consider regarding animal utilization in forage systems
Definition
-Animal nutritional needs
-Seasonal forage distribution
-Palatability (weather the animal like it or not)
-Species composition (important for pastures)
-Growth and removal rates
Term
Some problems with overgrazing
Definition
-Intake limited
-Low animal gain and production
-Low $ return per acre
Term
Some problems with undergrazing
Definition
-Old forage has low nutritive value
-Selective grazing
-Low $ return per acre
Term
some things a good forage system will do
Definition
-Match animal nutritional needs throughout the year
-Optimize animal production for forage produced
-Produce environmental benefits
-Provide wildlife cover and recreational opportunities
Term
why you want complementary forage species in a forage program
Definition
you want them for year around grazing or production
Term
why you want grass/legume mixtures in a forage program
Definition
because they can decrease fertilizer costs while optimizing nutritive value and seasonal distribution of production
Term
how a good forage system produces environmental benefits
Definition
-Limit soil erosion
-improve soil structure
-conserve water
-improve water quality
Term
EFFECT OF SPECIES RICHNESS ON GRASSLAND PRODUCTIVITY
Definition
[image]
The reason the increase is not linear is because of competition
Term
productivity of individual species vs. species richness
Definition
Productivity of individual species goes down when there’s more species richness
Term
Some characteristics of natural grasslands
Definition
-Native species predominate
-Species diverse
-Eveness of species (basically, the species know how to live with each other)
-Limited by water supply
-Low-input management (such tools include fire and grazing)
-Fragile ecosystem
-Extensive management
-Cow-calf best use
Term
Some characteristics of improved pastures
Definition
-Introduced species
-Few species
-Dominant species
-Limited by nutrients
-High-input management
-Robust ecosystem
-Multiple livestock enterprises
Term
evenness of species
Definition
species know how to live with each other
Term
some details about high input management
Definition
-nutrients
-water
-overseeding
-grazing
Term
some livestock enterprises in improved pastures
Definition
-cow/calf
-stocker
-dairy
-equine
Term
the biggest growth opportunities for improved pastures in Georgia
Definition
-stocker
-dairy
Term
one of the consequences of turning natural grasslands into arable land
Definition
wind erosion
Term
Wind erosion is one of the consequences of...
Definition
turning natural grasslands into arable land
Term
the type of grasslands that have more species diversity
Definition
natural grasslands
Term
why weather and climate are important variables in a forage system
Definition
because the choice of species is very important in that regard
Term
why the number of frost free days is important in forage selection
Definition
because this is related to the needed hardiness and cold tolerance of the pants
Term
when cool season grasses reproduce
Definition
when the days get longer
Term
when warm season grasses reproduce
Definition
when the days get shorter
Term
which tyope of grass has longer growing season? cool season or warm season?
Definition
cool season
Term
why it’s not worth it to grow warm season grasses in Mahattan, KS
Definition
because of such a short growing season
Term
is tall fescue a cool or warm season grass?
Definition
cool season
Term
is bermudagrass a cool or warm season grass?
Definition
warm season
Term
depiction of the typical yield distribution of tall fescue and other cool season grasses
Definition
[image]
Term
what tall fescue will do if you don't harvest it at peak yield
Definition
it'll go to seed
Term
depiction of the typical yield distribution of bermudagrass and other warm season grasses
Definition
[image]
Term
what warm season grasses do in response to day shortening and why
Definition
Warm season grasses go dormant when they sense day shortening because they’re not able to tolerate cold
Term
why we have to have multiple species in a forage program
Definition
because that maximizes yield
[image]
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