Nutrient Management Flashcards
An incomplete fertilizer is a fertilizer that:
Contains nitrogen, phosphorus, and potassium, but no other nutrients
Contains micronutrients but no macronutrients
Is missing one or two of the macronutrients.
Is missing one or two of the micronutrients
Is missing one or two of the macronutrients.
______________________ is the washing out of chemicals down through the soil.
fertilization
percolation
infiltration
leaching
leaching
Foliar application of fertilizer is most appropriately used to correct _________________ deficiencies.
macronutrients
Nitrogen
electrolyte
micronutrient
micronutrient
_______________________________ are elements required by trees in relatively large quantities.
macronutrients
organic elements
secondary elements
micronutrients
macronutrients
The macronutrient _________________ is an ingredient of chlorophyll and, if deficient, can cause reduced growth and yellowing of the foliage.
phosphorus
nitrogen
potassium
boron
Nitrogen
A 50 pound bag of 20-10-5 fertilizer contains _____________ pounds of actual nitrogen.
5
20
10
50
10
True or false
It is not desirable to use slow-release fertilizers because they release nutrients too slowly and contribute to nutrient deficiencies.
False
Complete the sentence by typing the missing word in the box below.
Trees take up essential elements, dissolved in __________________ through the roots
Water
The majority of nutrients are most available when the pH of the soil is ___________________.
acidic (low)
Alkaline (High)
Closer to neutral
Closer to neutral
The best time to fertilize trees is:
Summer
Fall
Winter
Spring
Spring
Yellowing that gets progressively worse toward the ends of stems is likely to be caused by _______________deficiency.
potassium
phosphorus
iron
nitrogen
iron
True or False
It is possible for a nutrient to be plentiful in the soil according to soil analysis, yet be deficient in a tree.
True
The death of leaf tissue, for example between veins and on the leaf margins, is known as ____________________.
canker
necrosis
stunting
chlorosis
necrosis
The most important factor for good uptake of fertilizer elements is adequate ___________________.
love
water
concentration
ventilation
water
Yellowing between leaf veins is called ______________ and may be the result of mineral deficiencies.
canker
necrosis
chlorosis
blight
Chlorosis
True or False
Microinjections and trunk implants cause no damage to the trunk of the tree.
False
Yellowing on the older leaves of a plant is most likely to be caused by a deficiency of which nutrient?
Phosphorus
Potassium
Iron
Nitrogen
Nitrogen
An 80 pound bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen?
10
4
6
8
8
The biggest problem with deep root fertilization is :
the concentration of the fertilizer damages the abosrbing roots.
fertilizer is placed below the absorbing roots.
it’s impossible to get deep enough to fertilize the taproot
fertilizer is placed below the absorbing roots.
Wilting, marginal burn, and dieback may be caused by excess ________________ in the root zone.
Carbon
salts
oxygen
water
salts
A tree may not respond immediately to fertilizer application if:
Choose the best answer.
The tree is not actively growing.
There is inadequate soil moisture.
All of these
A slow release fertilizer was applied.
All of these
A complete fertilizer contains:
Organic and inorganic nitrogen
All 16 essential elements
Equal amounts of N, P, and K
Nitrogen, Phosphorus, and Potassium
Nitrogen, Phosphorus, and Potassium
The fertilizer ____________________ listed on the container gives the relative percentage of nitrogen, phosphorus, and potassium that are contained in the fertilizer.
UPC symbol
inert ingredients
analysis
False
evaluation
Analysis
True or False
Surface application of fertilizer is relatively inexpensive and makes the fertilizer available in the upper few inches of soil.
True
Necrosis on the leaf margins and between the veins is most likely to be a symptom of ______________________ deficiency.
phosphorus
nitrogen
potassium
iron
Potassium
Purple discoloration on the leaves and reduced flowering and fruiting are symptoms of _______________ deficiency.
iron
nitrogen
potassium
phosphorus
Phosphorus
Manure and sewage sludge are ___________________ forms of fertilizer.
restricted
organic
inorganic
toxic
organic
