Forage crops / Animals & Environment exam 3

What is the name for the tiny hook like or finger like appendages that some grasses produce that extend form the base of the leaf blade around the stem at the top of the leaf sheath?

Auricles

At what age does a young leaf reach its peak photosynthetic efficiency?

3 weeks

If you had a batch of seed with a purity of 98% and a germination of 75%, which of the following options would be the % Prue Live Seed for the batch?

73.5%

If silage is to wet or to alkaline, bacteria will produce which of the following acids making the silage non-palatable?

Butyric acid

Individual soil particle <0.002 mm is called?

Clay

Individual soil particle 0.05 - 2.0mm is called?

Sand

During the ensiling process, aerobic bacteria should use up available oxygen within how many hours?

4-6 hours

Organic matter and which of the following answers determines a soils chemical properties?

Clay

Organic matter and which of the following answers determines a soils chemical properties

Clay

Which of the following branches of plant science is best described as the study of functions of organisms?

Physiology

How many days should a producer wait after removing livestock from an infected pasture to insure there is no viable seed in the feces?

3

Which of the following terms is considered a reservoir of plant nutrients and is restricted to positively charged elements?

Cation exchange capacity

Which of the following forage quality metrics is used as a measure of digestibility energy?

Total Digestible Nutrients (TDN)

Ensiling warm season grasses is often difficult due to low available energy, to facilitate fermentation _ is added.

Corn

Which of the following terms is considered a reservoir of plant nutrients and restricted to positively charged elements?

Cation Exchange Capacity

You should calibrate a no-till drill for each type of seed you are planting.

True

Ergovaline is the only ergot alkaloid that causes problems in livestock.

False

If you suspect poisoning of livestock, you should immediately call a veterinarian.

True

Soil texture has no impact on the cation exchange capacity of the soil.

False

Texture is based on the amounts of sand, silt, clay and O.M. in the soil.

False