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Urban Aboriculture > Nutrient Management > Flashcards

Nutrient Management Flashcards

1
Q

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

A

Is missing one or two of the macronutrients.

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2
Q

______________________ is the washing out of chemicals down through the soil.

fertilization

percolation

infiltration

leaching

A

leaching

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3
Q

Foliar application of fertilizer is most appropriately used to correct _________________ deficiencies.

macronutrients

Nitrogen

electrolyte

micronutrient

A

micronutrient

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4
Q

_______________________________ are elements required by trees in relatively large quantities.

macronutrients

organic elements

secondary elements

micronutrients

A

macronutrients

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5
Q

The macronutrient _________________ is an ingredient of chlorophyll and, if deficient, can cause reduced growth and yellowing of the foliage.

phosphorus

nitrogen

potassium

boron

A

Nitrogen

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6
Q

A 50 pound bag of 20-10-5 fertilizer contains _____________ pounds of actual nitrogen.
5

20

10

50

A

10

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7
Q

True or false

It is not desirable to use slow-release fertilizers because they release nutrients too slowly and contribute to nutrient deficiencies.

A

False

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8
Q

Complete the sentence by typing the missing word in the box below.

Trees take up essential elements, dissolved in __________________ through the roots

A

Water

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9
Q

The majority of nutrients are most available when the pH of the soil is ___________________.

acidic (low)

Alkaline (High)

Closer to neutral

A

Closer to neutral

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10
Q

The best time to fertilize trees is:

Summer

Fall

Winter

Spring

A

Spring

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11
Q

Yellowing that gets progressively worse toward the ends of stems is likely to be caused by _______________deficiency.

potassium

phosphorus

iron

nitrogen

A

iron

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12
Q

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.

A

True

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13
Q

The death of leaf tissue, for example between veins and on the leaf margins, is known as ____________________.

canker

necrosis

stunting

chlorosis

A

necrosis

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14
Q

The most important factor for good uptake of fertilizer elements is adequate ___________________.

love

water

concentration

ventilation

A

water

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15
Q

Yellowing between leaf veins is called ______________ and may be the result of mineral deficiencies.

canker

necrosis

chlorosis

blight

A

Chlorosis

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16
Q

True or False

Microinjections and trunk implants cause no damage to the trunk of the tree.

A

False

17
Q

Yellowing on the older leaves of a plant is most likely to be caused by a deficiency of which nutrient?

Phosphorus

Potassium

Iron

Nitrogen

A

Nitrogen

18
Q

An 80 pound bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen?

10

4

6

8

A

8

19
Q

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

A

fertilizer is placed below the absorbing roots.

20
Q

Wilting, marginal burn, and dieback may be caused by excess ________________ in the root zone.
Carbon

salts

oxygen

water

A

salts

21
Q

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.

A

All of these

22
Q

A complete fertilizer contains:

Organic and inorganic nitrogen

All 16 essential elements

Equal amounts of N, P, and K

Nitrogen, Phosphorus, and Potassium

A

Nitrogen, Phosphorus, and Potassium

23
Q

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

A

Analysis

24
Q

True or False

Surface application of fertilizer is relatively inexpensive and makes the fertilizer available in the upper few inches of soil.

A

True

25
Q

Necrosis on the leaf margins and between the veins is most likely to be a symptom of ______________________ deficiency.

phosphorus

nitrogen

potassium

iron

A

Potassium

26
Q

Purple discoloration on the leaves and reduced flowering and fruiting are symptoms of _______________ deficiency.

iron

nitrogen

potassium

phosphorus

A

Phosphorus

27
Q

Manure and sewage sludge are ___________________ forms of fertilizer.

restricted

organic

inorganic

toxic

A

organic

Urban Aboriculture (13 decks)

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