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Annual Cool Season Grasses
part of test 2
69
Agriculture
Undergraduate 4
01/30/2017

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Term
on winter annuals, we want to see ______, not ______
Definition
grazing
harvest and nutrient management
Term
Annual (Italian) Ryegrass is adapted to most of the US except
Definition
mountains
Term
some details about the Adaptation of Annual Ryegrass
Definition
-pH range 5.0 - 7.8
-Responds well to N fertilizer
-Produces forage in late winter/spring
Term
when fall establishment of annual ryegrass occurs
Definition
Fall establishment in early October (North) late October to mid-November (South)
Term
a disease that annual ryegrass is susceptible to
Definition
gray leafspot
Term
drought tolerance of annual ryegrass
Definition
intolerantof drought
Term
flooding tolerance of annual ryegrass
Definition
tolerant of short duration flooding
Term
In the South, you have more flexibility in planting date of annual ryegrass because of...
Definition
the frost date.
Term
something that will seriously hamper the establishment of annual ryegrass
Definition
gray leafspot
Term
why it is better to wait to establish annual ryegrass rather than try and get an early start with seeding
Definition
because gray leafspot will seriously hamper the establishment of annual ryegrass
Term
when to plant annual ryegrass
Definition
when average temperatures fall below 21-25°C (70-77°F)
Term
when gray leafspot grows best
Definition
at temperatures 21-25°C (70-77°F)
Term
when annual ryegrass will show symptoms of gray leafspot
Definition
within 72 hours after inoculation
Term
annual ryegrass tolerance to grazing
Definition
Tolerant of continuous grazing
Term
the best way to graze annual ryegrass
Definition
short duration rotational grazing
Term
ADF translates to this regarding after the animal eats it
Definition
lower digestibility
Term
the annual forage species that has the most aggressive growth
Definition
cereal rye
Term
pH range that cereal rye can tolerate
Definition
4.0-8.0
Term
pH range that cereal rye grows best in
Definition
5.8-6.5
Term
Optimum germination temperature for cereal rye
Definition
25-31°C (77-88°F)
Term
when to seed cereal rye in Georgia depending on where in the state you are
Definition
Sept 1 – Mountains
Sept. 15 - Middle GA
Oct 15-Nov. 1 in S. Georgia
Term
ideal seeding rate for cereal rye
Definition
120-150 lbs/A
Term
ideal seeding depth for cereal rye
Definition
1-2 inches deep
Term
apply this in this amount to maximize growth of cereal rye
Definition
Apply 40-60 lbs/A of N at emergence to maximize fall growth.
Term
height at which to graze cereal rye
Definition
Graze once 4-6” tall
Term
when ceraeal rye matures
Definition
early spring
Term
when cereal rye peaks
Definition
Peak in fall and peak in spring
Term
combine cereal rye with this to extend the grazing season
Definition
Combine with ryegrass which peaks high in spring ….extended grazing season.
Term
which is more potoperiod sensitive? cereal rye or annual ryegrass?
Definition
annual ryegrass
Term
is vernalization required for cereal rye?
Definition
no
Term
when the quality of cereal rye starts to go down
Definition
when it starts flowering
Term
when you have more flexibility with cereal rye
Definition
under warm weather
Term
some Seedling Diseases of Rye
Definition
-seedling blight
-leaf rust
-anthracnose
Term
the spring diseases of rye
Definition
-leaf rust
-anthracnose
Term
disease that's the biggest problem for rye
Definition
seedling blight
Term
seedling blight is easily managed by...
Definition
treating seed with fungicide
Term
when the spring diseases (leaf rust, anthracnose) are not an issue for rye
Definition
when grazed
Term
when ergot in grain causes toxicity
Definition
only if wet conditions prevail and plants mature
Term
one way to manage seedling diseases of rye
Definition
One way to manage is to graze heavily or mow to avoid seed heads; best way to manage it is to make sure it don’t go to seed.
Term
best way to manage seedling diseases of rye
Definition
making sure it don’t go to seed
Term
what you want the metabolizable energy (ME) of forages to be
Definition
at least 1.0 mcal/lb
Term
amount of energy in a forage vs. amount of forage consumed
Definition
directly proportional
Term
amount of fiber in a forage vs. amount of forage consumed
Definition
inversely proportional
Term
amount of energy in a forage vs. amount of fiber in a forage
Definition
inversely proportional
Term
why forages with less energy and more fiber get eaten less
Definition
because the less energy, the more fiber, which means more filling
Term
is wheat used for forages?
Definition
it is not normally grown for forage
Term
why there's a lot of wheat out there
Definition
-Current price > $10.00/bu
-Excellent rotation for row crops
-Plant in fall, harvest in spring
Term
when to plant wheat
Definition
fall
Term
when to harvest wheat
Definition
spring
Term
does wheat require vernalization?
Definition
yes
Term
what they do where wheat is used as a forage
Definition
Where they do use this as a forage, they graze it, take the animals off of it, and let it go to seed.
Term
why use wheat as a forage?
Definition
-Can predict stage of development easily
-Very high quality as long as in vegetative stage of development.
-Can graze plants with little or no effect on grain yield
-Cheap gain on animals even though it is short duration grazing
Term
the secret to using wheat as a forage
Definition
Don’t let plant develop past the joint stage while being grazed.
Term
why you don't want wheat to go past the joint stage when using it as a forage
Definition
because the joint stage is when it starts to go to seed
Term
why people like to grow wheat as a double crop
Definition
because wheat is very high in protein
Term
recommended time to plant wheat in Georgia's Mountain/Limestone Valley region
Definition
October 10 - November 1
Term
recommended time to plant wheat in Georgia's Piedmont region
Definition
October 25 - November 15
Term
recommended time to plant wheat in Georgia's Upper Coastal Plain region
Definition
November 7 - December 1
Term
recommended time to plant wheat in Georgia's Lower Coastal Plain region
Definition
November 15 - December 1
Term
recommended planting rate for wheat
Definition
150 lbs/A
Term
recommended planting depth for wheat
Definition
1 inch
Term
recommended row width for wheat
Definition
6-8 inches
Term
recommended tool with which to plant wheat
Definition
grain drill
Term
amount of N with which to fertilize Soft Red Winter Wheat at planting
Definition
30 lbs N/A
Term
amount of N with which to fertilize Soft Red Winter Wheat at jointing
Definition
150 lbs N/A
Term
when to graze cows on wheat
Definition
Feb and March
Term
where the plant's energy goes when it goes to flower
Definition
seeds
Term
You wanna graze before this stage of the plant's growth
Definition
stem elongation
Term
a problem you could have if you graze after a plant's stem elongation
Definition
nitrate toxicity
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