Answer each of the following 10 questions by clicking the appropriate button (A, B, C or D). A message box will appear indicating whether your answer is correct or incorrect. Test scores will then be displayed in the text boxes following each question. The ten questions can be answered in any order. But note that the scoring system used in this quiz is designed to respond only to the first answer to each multipe choice question. Thus, when a question is answered for the first time the score for the first answer will be displayed. However, subsequent answers to the same question will not be scored! Test scores are not monitored or recorded by the computer that provided this form.

Question 1

For mineral soils, the optimum soil pH for most vegetables is:

pH 5.0 to 5.8

pH 6.0 to 6.8

pH 7.0 to 7.8

None of the above

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Question 2

In the production of sweet corn the most critical time for maintaining adequate soil moisture is during:

Harvest

The two weeks prior to flowering

Tasseling and ear development

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Question 3

Sweet corn must be isolated from field corn pollen by a distance of at least:

25 feet

100 feet

250 feet

1000 feet

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Question 4

Tomato leaves with purple coloration on the underside, particularly at the midrib and veins, is a symptom of:

Nitrogen deficiency

Magnesium deficiency

Calcium deficiency

Phosphorus deficiency

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Question 5

Tomato fruit with brown, necrotic lesions at the blossom-end of the fruit is a symptom of:

Nitrogen deficiency

Potassium deficiency

Calcium deficiency

Phosphorus deficiency

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Question 6

It is safe to plant standard sugary (su) and supersweet shrunken-2 (sh₂) varieties of sweet corn with similar maturity dates in close proximity to one another:

TRUE

FALSE

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Question 7

Which one of the following vegetable crops does not require bees for pollination and fertilization:

Spinacia oleracea, spinach

Cucumis sativus, cucumber

Cucumis melo, muskmelon

Cucurbita pepo, summer squash

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Question 8

The pH of acidic soils can be most effectively raised by applying:

Ammonium fertilizer

Sulfur

Limestone

Irrigation

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Question 9

The optimum storage temperature for sweet corn is:

23^oF

32^oF

50^oF

70^oF

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Question 10

Ethephon (or Ethrel) can be used to accelerate and concentrate fruit ripening in tomato:

TRUE

FALSE

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