Calculations
How many pounds of Nitrogen, Phosphorus, and Potassium are in an 100 lb. bag of 40-25-30? How many pounds of filler material?
Nitrogen= 40 lbs
Phosphorus= 25 lbs
Potassium= 30 lbs
Filler Material= 5 lbs.
What Primary Macronutrient enables rapid growth of plants, increases seed and fruit production, and improves quality of leaf and forage crops?
Nitrogen
What micronutrient aids in the use and regulation of nutrients, helps in the production of sugar and carbohydrates and is essential for seed and fruit development?
Boron
What primary macronutrient deficiency results in yellowing of older leaves on the bottom of plant, chlorosis, and causes reduced yield potential?
Nitrogen
What type fertilizer would be the best choice for someone wanting to quickly establish a new lawn?
A. 10-10-10
B. 20-39-12
C. 40-30-20
One that is high in Nitrogen. C. 40-30-20
How many pounds of Nitrogen, Phosphorus and Potassium are in a 150 lb. bag of 15-40-25? Is it complete or incomplete?
Nitrogen= 22.5 lbs
Phosphorus=60 lbs
Potassium= 37.5
COMPLETE
What primary macronutrient encourages blooming and root growth, helps transform solar energy to chemical energy, and is involved in the formation of oils, sugars and starches?
Phosphorus
What micronutrient is imperative for reproductive growth, helps in root metabolism, and helps in utilization of proteins?
Copper
What primary macronutrient causes leaf tips to appear burned, causes older leaves to appear dark-green or reddish-purple and can cause overall stunting/reduced yield potential.
Phosphorus
A. 20-10-20
B. 30-10-20
C. 20-40-30
Nitrogen= 80 lbs
Phosphorus= 30 lbs
Potassium= 40 lbs
Highest in Nitrogen: Quick growth/Foliage Growth.
What primary macronutrient is absorbed by plants in larger amounts than any other mineral element excluding nitrogen, helps build protein, fruit quality and aids in reduction of diseases?
Potassium
What micronutrient is used in the formation of chlorophyll?
Iron
What macronutrient deficiency causes younger leaves to become distorted or irregularly shaped and can lead to blossom-end rot?
Calcium
What fertilizer would have the highest amount of Potassium?
A. 10-30-40
B. 40-30-10
C. 30-40-10
How many pounds of N, P, K are in a 25 lb. bag of 15-25-30? Would this be a good fertilizer for root growth?
N= 3.75 lbs
P= 6.25 lbs
K= 7.5 lbs
Yes it is adding some of the nutrient that would help with the establishment of young roots.
What secondary macronutrient is an essential part of plant cell wall structure, allows for normal transport and retention of other elements and provides strength to plants?
Calcium
What micronutrient helps plant metabolism, and is present in higher concentrations after: rainfall, fertilizer application, irrigation.
Chlorine
What macronutrient deficiency make the edges of older leaves turn yellow, and creates a green arrowhead shape which develops in center of leaf?
Magnesium
A. 20-10-20
B. 50-30-10
B: 50-30-10 Because it has the highest amount of nitrogen.
How many pounds of N, P, K are in 600 lbs. of a 30-40-20 fertilizer blend? Is it complete or incomplete?
Nitrogen= 180 lbs
Phosphorus= 240 lbs
Potassium= 120 lbs
Complete!
What secondary macronutrient is essential for the production of protein, promotes activity and development of enzymes and vitamins, aids in chlorophyll formation, and encourages root growth and seed production, helps with resistance to cold.
Sulfur
What micronutrient aids in the use of nitrogen, is toxic in high quantities, and it's availability increases with soil pH?
Molybdenum
What secondary macronutrient deficiency causes yellowing of younger leaves?
Sulfur
Why is soil pH important when applying fertilizer?
If the soil pH does not allow the plant to uptake the nutrients, no matter how much we apply it will not make a difference.