Conditions which favor volatile losses of nitrogen as ammonia include?

Low water holding is a characteristic of what type soil?

Requires labeling by law

Genetically modified plants contain

Mixture of pore spaces is a characteristic of what type soil?

Which of the following factors does not affect wind erosion?

________ is when a plant produces a chemical toxin that impairs the growth of a different plant.

When a hay sample is analyzed in the lab for forage quality only three values are measured (other than Ca, Mg, P, and K). The other quality factors are then calculated using those three. Which are the three that are actually measured?

Which of the soil textures listed below has the highest porosity and lowest bulk density?

Which of the following factors allow a pest to overcome host plant resistance?

Which of the following does NOT encourage pesticide resistance to develop?

Nutrients passing through quickly is a characteristic of

Cations are held on the CEC by charges on clay and organic matter.

Other than providing water to meet the crops needs why are rice fields flooded?

At what growth stage is corn most vulnerable to hail damage?

If you were a soybean breeder and wanted to go to its country of origin in order to find resistance to rust where would you go?

Most dicots have what type of germination and emergence?

Why is cotton not produced in the northern climates?

Why is sweet corn sweet?

If you planted a soybean variety in extreme northern Missouri in May that was suited for extreme southeast Missouri what would happen?

The parent line for registered or certified seed is called:

Which of the following textural classes has the largest potential available water?

What is the Carrying Capacity of a grazing system?

There are _______ sections in a township.

Which of the following increases as a soil’s clay content increases?

PM has a main goal of________pesticide use.

Denitrification is the conversion of to gaseous form like dinitrogen and oxides of nitrogen.

The maximum value for plant available water is ?

If you subtract what from NDF you get the amount of hemicellulose.

Which type of wheat is predominately grown in Missouri?

What is a legume?

Where would you normally plant a maturity Group 2 soybean variety?

Orchardgrass should exhibit _____________________ when the appropriate harvest time arrives.

The University of Missouri Soil Testing Lab measures the salt pH of the soil. If a soil has a salt pH of 5.5 what would you expect the water pH to be?

This warm season grass is often called “Ice Cream” grass since it is high in nutrition and palatability. It is also highly productive but prefers loamy soils with adequate moisture.

What is the most productive forage legume?

Reed Canarygrass should exhibit _____________________ when the appropriate harvest time arrives.

Soil organic matter is a source of ________for crops.

What crops are examples of monocots?

If substantial ammonia is lost after application of UAN, a inhibitor might reduce this loss

Which of the following is an advantage of a crop rotation over a monoculture system?

Which elements do plants obtain from the air?

Alfalfa should exhibit _____________________ when the appropriate harvest time arrives.

What does physiological damage to plants by insects refer to?

With everything else being equal which soil conditions cause the deepest soil compaction?

What would be a good final corn population (plants/acre)?

Smooth Bromegrass should exhibit _____________________ when the appropriate harvest time arrives.

What is not one of the factors that affect forage quality at harvest?

Wheat planting should be delayed after the “fly–free” (Hessian fly) date that ranges from ____ at the Iowa line to ______ at the Arkansas line.

If a soil test calls for 1200 ENM per acre and the ENM of the lime is 400, how many tons of lime should be applied?

A product with a LD50 of 35 mg/kg is ________ toxic than another with a LD50 of 250 mg/kg?

Which of the following clays contributes most to CEC if the same amount of each clay is present?

Red Clover should exhibit _____________________ when the appropriate harvest time arrives.

In order to increase soil organic matter level, _______must be markedly reduced or eliminated.

If you were going to plant soybeans no-till in cold soils how would you adjust soybean planting rate per acre?

Greenbugs, Midge, and Webworms are major pests to which crop?

As forage harvest is delayed what would you expect to happen to forage quality?

Which nutrient is commonly used to regulate the pH of the soil?

If alfalfa is the most productive legume why isn’t it grown more widely?

If a forage has a Nitrogen concentration of 2% what then is the Crude Protein concentration?

What is/are a major problem(s) in using sweet clover for forage?

Timothy should exhibit _____________________ when the appropriate harvest time arrives.

Seed used to produce foundation seed is called:

______ leaf tips indicate phosphorus deficiencies and occur more often in young plants exposed to good growing conditions after cool, wet conditions.

Since I am using glyphosate resistant corn I have decided to wait until five weeks after the weeds and corn have emerged to control them. What would be the result on corn yield?

Which one of these cereal crops is commonly planted in the spring?

If P based recommendations are used for manure applications ?

What is not a characteristic of an organic fertilizer compared to a chemical fertilizer?