Exam 3 Flashcards by River Dowell

What is Feekes Stages 2&3?

-Tillering Stage

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What is Feekes Stage 6?

-Jointing Stage

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What is Feekes Stage 10.1?

Heading Stage

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What is Feekes Stage 10.5?

Anthesis/Flowering Stage

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What happens at Feekes Stage 2&3?

-Tillers are developing below soil surface

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What happens at Feekes Stage 6?

The internode begins to elongate

- The 1st node is a measurable distance above the soil surface

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What happens at Feekes stage 10.1?

-The seed head of the Wheat emerges

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What happens at Feekes 10.5?

-The Wheat is flowering, the anthers are out

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How are wheat maturities measured? What also slightly affects this?

By the heading dates

- Slightly affected by planting date

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What is the issue with wheat planted too early?

-Is suseptible to late winter/early spring freezes

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What is the issue with wheat planted too late?

-Is suseptible to high temperature stress in early summer

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What is the problem with overseeding wheat?

-It becomes more suseptible to lodging

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What is the problem with underseeding wheat?

-It lowers the yield potential

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In the experiment from class, what was the results of continuous wheat?

-Conventional till continuous wheat yielded slightly better than the no-till

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In the experiment from class, what was the results of corn/wheat rotation?

-Corn yielded significantly higher under no-till while wheat yielded slightly lower

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In the experiment from class, what was the results of soybean/wheat rotation?

-Soybeans yielded higher under no-till while wheat yielded slightly lower.

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How did the soil that was under no-till benefit compared to the conventional tilled soil?

-It had significantly better hydraulic conductivity and greater mesopores.

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What are the recommended wheat planting dates?

What is this close to?

1 week before to 1 week after the average 1st frost date.

- Close to old “Hessian Fly-Safe Dates”

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What are the recommended seeding rates for no-till and conventional till wheat?

40 seeds per sq. ft. [no-till]

- 35 seeds per sq. ft. [conv. till]

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What is the recommended seeding depth range for wheat?

-3/4” to 1 and 1/4”

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What is the recommended row widths for conv. till and no-till wheat?

4” [conv. till]

- 7” [no-till]

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What are tramlines?

-Skips in the planting area of wheat for equipment to drive in after the wheat starts to elongate.

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What is the idea pH of wheat?

6.4

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How is N recommended to be applied for wheat?

-In 3 applications:
>once in the fall(DAP usually covers this)
>topdress in split app in feb. and march

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What are recommended amounts of N to be topdressed onto wheat?

- 80-110lbs/Ac [conv. till] | - 100-120lbs/Ac [no-till]

What is the legal test weight of wheat and at what moisture percentage is this?

-60lbs/Bu at 13.5% moisture

What does test weight reflect in wheat?

Quality

(T/F) You must manage wheat completely and perform all necessary "steps" to profit. Failure to do any of the 3 steps will result in profit loss, not gain.

True

In the tobacco variety name "KTD6LC", what do the following portions stand for? - KT? - D? - 6? - LC?

- Kentucky Tennessee (location variety was developed) - Dark (type of variety) - 2006 (year of release) - Low Converter (Approval of low converter requirement)

What height are tobacco plants restricted to in plant beds?

4-5" tall

How long are tobacco plants kept in plant beds?

8 weeks

How many plants per acre are set when planting tobacco?

5,000

What is the row spacing of tobacco?

40" rows

What is the interow plant spacing of tobacco?

32" between plants

What are tobacco plants topped?

To remove the terminal bud thus directing plant resources from seed development to leaf development

What is the desired number of leaves per plant for Burley and Dark Tobacco?

Burley: 18-26 leaves Dark: 16 leaves

How long are tobacco plants "fired"?

5-10 days each for 2 to 4 times

What program in 2004 lifted a lot of restrictions off of tobacco growers?

Tobacco buyout program

What are the 2 types of tobacco?

- Burley | - Dark Fired

What are the 4 types of Dark Tobacco?

- Western fire cured - Eastern fire cured - green river air cured - one sucker air cured

What was the old favorited variety of dark tobacco because of its yield and quality? What was the one flaw of this variety?

- Narrowleaf Madole | - Has poor disease resistance

What is the new favorite variety of dark tobacco? | What is significant about this variety compared to Narrowleaf madole?

KTD17LC | -Is resistant to black shank and black root rot

What does LC mean in tobacco?

Is a low converter which means the variety has less chance to convert nicotine to nornicotine.

What does nornicotine do that is bad and what does it form that is bad?

It can react with nitrite to form TSNA's (Tobacco specific nitrosamines) which are carcinogenic.

What does tobacco roots have a poor tolerance for? | Why?

Poor drainage | Because they must have oxygen to respirate to allow water inside.

Is tobacco a perennial or annual?

Perennial

How is tobacco treated here in terms of growing season?

Grown as an annual

Most burley varieties of tobacco now have a ____to_______ level of resistance to black root rot disease.

medium to high

What nutrient does burley varieties need more of when pH is below 6.6?

Molybdenum

How many pounds of N should be applied to tobacco in the field/

150-300lbs

What is recomennded pH of tobacco when black root rot is present in field of burley? dark/

between 5.5 and 5.8 in burley | between 5.6 and 6.0 in dark

What were the 3 types of sucker control?

- Contact control agents - Local systemic control agents - Systemic control agents

Where must local systemic control agents be applied? What type of tobacco are these commonly used in?

- directly to auxillary buds | - common in dark tobacco

Where must contact control agents be applied? | What type of tobacco are these commonly used in?

- directly to auxillary buds | - common in dark tobacco

Where must systemic control agents be applied? | What type of tobacco are these commonly used in?

- over the top of the plant in large droplets | - common in burley tobacco

What is the rate that narrowleaf madole gains lbs after topping?

120lbs per acre up to 9 weeks after topping.

What are the 3 grades of tobacco leaves?

- lugs - seconds - leaf

(T/F) It is okay to use 0-0-60 on tobacco.

False

What are the modifications needed on a tobacco setter to set no-till tobacco?

- Wavy or fluted coulter - subsoil tillage shank - modified press wheels

Most glyphosate formulations have statement on the label that requires a ____ day waiting period before planting crops not specifically listed on the label.

more than 30 days

________ are not desirable in rotation with tobacco due to the possibility of black root rot problems.

legumes

How can ripeness of tobacco be determined?

By doubling leaves between fingers and seeing if the leaves crack or not.

Exam 3 Flashcards

(62 cards)