Horticultural Uses of Soil
Soil pH and Salinity
Plant Nutrition
Soil Sampling and Testing
Fertilizers
100

Container-grown plants can suffer from salt buildup, which can be remedied this way.

What is leaching through watering?

100

This pH range represents most naturally occurring soils.

What is 5.0 to 8.0?

100

Chlorophyll, the green pigment in plants, contains this mineral.

What is magnesium?

100

Soil samples for most crops are taken from this depth of soil.

What is six to nine inches?

100

This is NOT a pre-plant fertilizing method: broadcasting, soil injection, or topdressing?

What is topdressing?

200

These plants require deep, well-drained soils, but soil type varies by variety.

What are fruit crops?

200

The pH scale measures this aspect of soil reaction.

What is acidity or alkalinity?

200

Plants consume more of this nutrient than potassium, but less than nitrogen.

What is phosphorus?

200

Buffer tests help measure the amount of this required to neutralize the soil.

What is lime?

200

This type of fertilizer is considered "slow-release" as it decays over time.

What is organic fertilizer?

300

Which types of plants can be grown in containers?

What are all of the different types of plants?

300

Coarser lime has this efficiency compared to finely-ground lime.

What is lower efficiency?

300

This percentage of soil nitrogen is stored in organic matter.

What is 97%?

300

This test measures the "available" form of a critical macronutrient.

What is phosphorus?

300

Ammonium-based fertilizers affect soil pH in this way.

What is they decrease soil pH?

400

High nitrogen levels promote vegetative growth but reduce stem strength. This nutrient counters the effect.

What is potassium?

400

This type of test identifies nutrient problems that aren't always visible in plants.

What is a plant tissue test?

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