Fertilizer Flashcards

1
Q

Calculating fertilizer by area

A
  1. Find total sf of space
  2. Find weight of N in one bag, given as percent (must know weight of bag)
  3. Calculate how much area one bag would cover
  4. Divide size of area by amount one bag would cover
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2
Q

How many lbs of N would a 40lb bag of 20-20-20 have?

A

.2x40=8 lbs

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3
Q

golden rule for fertilizer

A

1 lb N/ 1,000 sf

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4
Q

How much area would a 40lb bag of 20-20-20 cover?

A
  1. 0.2x40=8 lbs N
  2. 8x1000=8000 sqft
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5
Q

How many 40 lb bags of 20-20-20 would cover 25,000 sqft?

A
  1. 0.2x40= 8 lbs N
  2. 8x1000= 8,000 sf
  3. 25,000 sf/8,000 sf= 3.125 bags
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6
Q

how many sqft are in 1 acre?

A

43,560 sf

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7
Q

Standard fertilizer concentration

A

200ppm

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8
Q

Low rate fertilizer concentration

A

(for winter)
100ppm

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9
Q

max rate fertilizer concentration

A

300-400ppm
to push growth

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10
Q

Benefits of controlled-release fertilizer

A

-easy to use
-reduced application time
-reduced environmental impact

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11
Q

Disadvantages of controlled-release fertilizer

A

-lack of flexibility
-storage limitations

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12
Q

Hose on ratio

A

1:15

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