Are compounds that release nutrients in forms useful to plants called nutrient carriers?
Indicate by YES (Y) or NO (N).
Question 2All of the following formulas are used to convert between phosphorus/phosphoric acid and
potassium/potash when calculating element/oxide in fertilizer grades EXCEPT ____.
a. P2O5 0.44 = P
b. K 1.2 = K2O
c. K2O 0.83 = K
d. P 2.29 = P2O5
e. MC = P
Question 3Pop-up fertilizers should ____.
a. be applied in large amounts
b. have a high salt-index
c. be placed in the row with the seeds
Question 4Fertilizers are ____; therefore they raise soil salinity.
a. acids
b. salts
c. alkalis
Question 5Which of the following is NOT a preplant fertilizing method?
a. Broadcasting
b. Topdressing
c. Soil injection
Question 6All of the following are secondary elements found in fertilizers EXCEPT ____.
a. calcitic, dolomitic, hydrated, and burned lime
b. zinc
c. gypsum
d. magnesia
Question 7All of the following are nitrogen carriers EXCEPT ____.
a. anhydrous ammonia
b. nitrate of soda
c. urea
d. granite meal
e. ammonium sulfate
Question 8In fertilizer grade, nitrogen is listed as an element, but phosphorus and potassium are listed in their
oxide forms. Fertilizers do not actually contain the oxides but this convention is employed so ratio
numbers are more uniform and easier to understand.
Indicate whether the statement is true or false.
Quick Reply
