Exam 1 Lectures 7

Question 1

What is climate?

Answer 1

1.Movement of air and process of exchange of energy and moisture between land and water surface
2.A composite of the day to day weather conditions
3.An average of weather over a period of time

Question 2

What is weather?

Answer 2

Short-term changes in conditions of air movement, energy and moisture

Question 3

How does climate and weather affect plants ?

Answer 3

1. Climate determines what plants can be grown in a region
2. Weather influences their yield and quality in a given period of time

Question 4

What are major Environmental factors that affect forage production?

Answer 4

1. Soil characteristics
2. Rainfall & soil moisture conditions
3. Temperature
4. Light interception

Question 5

What is Evapotranspiration (ET)?

Answer 5

Loss of water from both soil & plant surfaces to the atmosphere

Question 6

What controls ET?

Answer 6

1. Unstressed plants -temperature, sunlight, relative humidity
2. Stressed plants - plant control by closing stomata & altering the leaf canopy