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Forage Establishment
part of test 2
54
Agriculture
Undergraduate 4
03/05/2017

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Term
the objective in forage establishment
Definition
A thick, vigorous stand of forage to maximize yield and utilization
Term
forage establishment is dependent upon...
Definition
-Proper seeding practices
-Favorable seedbed
-Favorable environmental conditions
-Seedling management
Term
when to start the Pre-establishment planning for forages
Definition
Start 1-2 years in advance
Term
some questions to answer during the pre-establishment planning phase of establishing a forage
Definition
1: Is the current crop compatible with that which will be planted - herbicide residues?
2: What are the pH and nutritional needs of the crop? Which Rhizobium do I need to inoculate?
3: What species and variety should I plant?
4: What is the best method for establishment? Conventional till vs. No-till
5: When is the best time of the year to plant the forage species?
6: What is the best seeding rate, depth, and row spacing?
7: How will I control weeds during or after planting?
Term
some things to consider regarding the compatibility of the current crop with that which will be planted
Definition
-herbicide residues
-allelopathy
-current crop a control problem later?
Term
how long herbicide residues can last
Definition
Herbicide residues can last 24 months or longer, especially following drought!
Term
potentially desired rotation of monocots and dicots
Definition
-Usually plant monocots following dicots and dicots following monocots
+Basically, don’t plant the same thing over and over again
Term
Herbicide residues can do this to plants.
Definition
injure plants and cause reduced seedling vigor
Term
something that often happens to plants that are affected by herbicide residues
Definition
Plants are slow to grow and often weeds take over fields.
Term
if something is bad for one monocot, is it bad for the others?
Definition
Generally, what is bad for one monocot is bad for others
Term
what lime does to the soil pH
Definition
Lime raises the pH, but doesn’t reduce Al
Term
what lime does to the soil Al
Definition
Lime raises the pH, but doesn’t reduce Al
Term
Objectives of seeding a crop
Definition
-Suppress competing plants (cultivation/spray)
-Place seed at appropriate depth
-Provide good seed/soil contact
Term
why tilling is bad for soil
Definition
Tilling runs the risk of erosion and exposes organic matter such that it favors the breakdown of it.
Term
what disking/plowing does to the soil
Definition
Disking/plowing inverts soil and buries existing plants but leaves ground rough
Term
what harrowing does to the soil
Definition
Harrowing the soil smoothes the surface, but often it is too fluffy for small seeds of forages
Term
what cultipacker/seeder does to the soil
Definition
Cultipacker/seeder firms the seed bed and places the seed close to the soil surface.
Term
advantage of using a cultipacker/seeder
Definition
uniform placement of seed over prepared soil surface
Term
seed size with which to use grain drills
Definition
medium size
Term
when using grain drills, you need ______ to keep seed from deep placement.
Definition
depth gauges
Term
why you need depth gauges when using grain drills
Definition
to keep seed from deep placement
Term
desired seeding rate when using grain driils
Definition
higher seeding rates
Term
when using grain drills, use higher seeding rates to accommodate...
Definition
seeds that don't germinate, which is a result of deep placement
Term
something that's essential for a grain drill
Definition
press wheels
Term
when using grain drills, the higher seeding rate helps compensate for...
Definition
seeds that don’t germinate
Term
some details about no-till seeding
Definition
-Surface must be smooth to start
-Suppress weeds/sod with herbicide
-Plant directly into dead residue
-Conserves moisture (better success rate)
-Reduces erosion and crusting
-Maintains soil structure
-Reduces fuel and labor costs
Term
when disking in sandy soil, there's always the risk of...
Definition
the disk going too deep
Term
The establishment in establishment % refers to ______
Definition
emergence
Term
Number of plants per square foot affects ______
Definition
yield
Term
what plants do when there's too many plants per acre
Definition
compete with each other
Term
some things to consider when controlling weeds during or after planting
Definition
-Chemical options are limited
-Mow/graze to prevent competition
Term
some things to do when Incorporating Legumes Into Grasses
Definition
-Establish the grass first
-Graze or mow pasture in late summer (Aug./Sept.)
-Chemically suppress the grass
Term
why you want to establish the grass before the legumes
Definition
-Less erosion
-Better weed control options
-allows you to control the weeds and maintain the soil and such
Term
why you want to Graze or mow pasture in late summer (Aug./Sept.)
Definition
Reduces thatch, provides even canopy
Term
why you want to Chemically suppress the grass
Definition
-Maintains open areas for germination and establishment of the legume seed
-Reduces habitat for disease infestation
-give the legumes a chance to establish
Term
some possible causes of poor germination
Definition
-Dry Seedbed
-Non-viable Seed
-Hard or Dormant Seed
-Unfav. Temperature
-Herbicide Residue
Term
some possible causes of germination but no emergence
Definition
-Planted too deep
-Soil crusting
-Poor seedling vigor (old seed)
-Insects or disease
-Extreme temperatures
Term
some possible causes of emergence but no seed survival
Definition
-Soil too acid or low fertility
-Insects or diseases
-Drought
-Weed competition
-No legume nodulation
-Winter kill
-Heaving from frost
-High winds – sandblast
-Graze too early
Term
VNS
Definition
variety not stated
Term
what VNS (variety not stated) means
Definition
this means you have to do the germination test and other tests on it on your own; you’re taking all the risks along with it
Term
You don’t wanna plant legume seeds w/o...
Definition
scarifying them
Term
the seed will remain dormant for a while after...
Definition
reaching physiological maturity
Term
Heaving
Definition
when the plants are suffering
Term
some things to do when Using Vegetative Cuttings for Establishment
Definition
1: Obtain high quality certified planting materials; make sure it's weed-free
2: Plant immediately after digging sprigs
3: Plant for best sprig survival
4: Establish your own nursery for large acreage plantings
5: Select best planting technique (sprigger/broadcast, sprigs/cuttings)
Term
when to plant cuttings
Definition
Plant immediately after digging sprigs
Term
planting techniques to use when planting sprigs
Definition
best planting techniques (sprigger/broadcast, sprigs/cuttings)
Term
a difference between sprigs and cuttings
Definition
Sprigs have roots and cuttings don’t
Term
what you're relying on in cuttings and what you want it to do
Definition
With cuttings, you’re relying on the meristematic tissue to differentiate into roots, tillers, and such
Term
the best methods for establishing hybrid bermudagrass
Definition
1) Dormant sprigs (rhizomes)
2) Sprigs
3) Tops/green stems
Term
when you gotta get the tops/green stems
Definition
when the plants are actively growing
Term
the type of herbicide 2, 4-D is
Definition
2, 4-D is a broad leaf herbicide
Term
what you must do to the land after sprigging Bermudagrass
Definition
Cultipack to level land after planting
Term
Diuron
Definition
a chemical that controls crabgrass and such
Term
Common mistakes when establishing bermudagrass
Definition
1: Planting when soil moisture is inadequate
2: Poor quality sprigs (dried out or heated)
3: Short-cutting on sprig numbers
4: Covering sprigs too deep
5: Poor soil firming around sprigs; gotta maintain soil firmness
6: Poor weed control
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