PH #2 Flashcards

1
Q

When you increase soil organic matter you are

A

Increasing plants tolerance for acidic or alkaline conditions

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2
Q

Weeds are weaker in

A

Acidic soils

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3
Q

Soil pH can be lowered by half a point (7.0-6.5) by

A

Increasing soil nitrogen

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4
Q

Manure can help

A

Decrease soil pH over time

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5
Q

Alfalfa meal helps

A

Lower soil Ph

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6
Q

Lower pH in large amounts (more than half a point) with

A

Elemental sulfur

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7
Q

Other word for elemental sulfur

A

Flowers of sulfur

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8
Q

How elemental sulfur lowers pH

A

Bacteria oxidizes sulfur and releases dilute sulfuric acid into soil

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9
Q

When using elemental sulfur

A

Mix in well so it doesn’t accumulate just in certain spots

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10
Q

Sulfur only works in

A

Summer

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11
Q

Why sulfur only works in summer

A

Warm soil, high bacterial activity

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12
Q

Elemental sulfur can take (range) (2) to affect soil

A

Several weeks, several months

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13
Q

When using elemental sulfur use _ applications over entire season (range)

A

2-3

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14
Q

Fall or cool season veggies pH preference (range)

A

6.8-7.5

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15
Q

Make soil more alkaline using

A

Dolomite Lime

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16
Q

Don’t use Dolomite lime in soils that have

A

Adequante or excessive magnesium

17
Q

Excess magnesium does _ to plants (2)

A

Stunts/kills

18
Q

The heavier soil, the _

A

More additives it takes to raise/lower pH

19
Q

Dried and crushed eggshells _ pH

A

Raises

20
Q

To change pH with crushed eggshells, spread _ every 100sq feet

A

1-2lbs

21
Q

For a short-term pH adjustment, spread 1.5lbs of _ every 100sq ft

A

Hardwood ash

22
Q

Ground oyster shells _ pH

A

Raises