Choose the correct answer for each question in the quiz.

1. 
   The concentration of nitrate-nitrogen in plant tissue of forage samples such as barley or oat is generally highest during which part of the day.

   1.   ?    Morning
   2.   ?    Mid-day
   3.   ?    Late Afternoon
   4.   ?    Early Evening

2. The shelf life of chemicals and reagents used in the Nitrate QuikTest is approximately 3 years.

   1.   ?    True
   2.   ?    False

3. The reagent used as the color indicator for the Nitrate QuikTest For Forages is:

   1.   ?    sodium hypochlorite
   2.   ?    polyvinyl chloride
   3.   ?    diphenylamine
      
   4.   ?    dichromium acetate

4. Which part of a plant sample should be selected for testing when a producer brings a dry hay sample into the office for a Nitrate QuikTest For Forages?

   1.   ?    approximately 6 small leaves
   2.   ?    the lowest nodes of 5-6 stems of the plant material
   3.   ?    any portion of the plant material
   4.   ?    approximately 3 flag leaves

5. The typical range in nitrate-nitrogen concentration of plant tissue samples which should be fed with caution or mixed with other forage known to be low in nitrate-nitrogen concentration is:

   1.   ?    tissue nitrate-nitrogen concentration less than 10 ppm (= 0.0044% NO3)
   2.   ?    tissue nitrate-nitrogen concentration less than 100 ppm (= 0.044% NO3)
   3.   ?    tissue nitrate-nitrogen concentration less than 350 ppm (= 0.44% NO3)
   4.   ?    tissue nitrate-nitrogen concentration less than 3,500 ppm (= 4.4% NO3)

6. The concentration of nitrate-nitrogen in forage tissue samples of barley or oat is usually highest at the lowest node of the main stem and progressively less at higher elevations in the stem.

   1.   ?    True
   2.   ?    False

7. The materials and reagents used in the Nitrate QuikTest are not harmful and require little or no precautionary behavior when handling.

   1.   ?    True
   2.   ?    False

8. The Nitrate QuikTest provides an accurate, quantitative measure of plant tissue nitrate-nitrogen concentration.

   1.   ?    True
   2.   ?    False

9. When the laboratory results of a nitrate analysis of forage tissue sample are reported, the value will always be less as ‘nitrate’ (NO3) than as ‘nitrate-nitrogen’ (NO3-N).

   1.   ?    True
   2.   ?    False

10. The recommended procedure for dealing with human contact with the reagents used in the Nitrate QuikTest For Forages is:

    1.   ?    Nothing.
    2.   ?    Eyes: Flush eyes with plenty of water for at least 15 minutes. Skin: Flush skin with plenty of soap and water for at least 15 minutes. Get medical aid.
    3.   ?    Ingestion: Do not induce vomiting. Get medical aid immediately. Inhalations: Remove from exposure to fresh air immediately.
    4.   ?    Both B and C above.

11. A representative hay sample should always be sent to a diagnostic laboratory for confirmation of test results when the Nitrate QuikTest indicates an elevated nitrate-nitrogen level.

    1.   ?    True
    2.   ?    False

12. Presence of potentially high or elevated concentrations of nitrate-nitrogen are indicated by development of what color when using the Nitrate QuikTest:

    1.   ?    absence of color
    2.   ?    deep green color development in reagent/tissue mixture
    3.   ?    dark brown color development in reagent/tissue mixture
    4.   ?    dark blue or purplish blue color development in reagent/tissue mixture