BRAE 340 Exam 3 questions with
complete solutions A+ rated
What are the 4 major factors which determine the numerical value of the crop coefficient Kc? -
correct answer ✔✔-Crop
-Stage of growth
-Soil surface wetness
-Plant moisture stress
Having poor DU, high AE and no uncollected runoff implies which of the following? - correct
answer ✔✔Under-irrigated
The correct relationship between the ET for a reference crop and the evapotranspiration for
some other crop is - correct answer ✔✔ETc = Kc*ETo
Which of the following pairs is most likely to to generally improve irrigation efficiency? - correct
answer ✔✔Proper irrigation time/amount and achieve good DU
T/F: California, unlike the USBR, uses a grass reference for determining ETo - correct answer
✔✔True
T/F: There are only about 30 weather stations throughout the CIMIS network in California -
correct answer ✔✔False
T/F: 7 or 19 hr/day are typical, convenient irrigation set times for hand move sprinkler systems -
correct answer ✔✔False
complete solutions A+ rated
What are the 4 major factors which determine the numerical value of the crop coefficient Kc? -
correct answer ✔✔-Crop
-Stage of growth
-Soil surface wetness
-Plant moisture stress
Having poor DU, high AE and no uncollected runoff implies which of the following? - correct
answer ✔✔Under-irrigated
The correct relationship between the ET for a reference crop and the evapotranspiration for
some other crop is - correct answer ✔✔ETc = Kc*ETo
Which of the following pairs is most likely to to generally improve irrigation efficiency? - correct
answer ✔✔Proper irrigation time/amount and achieve good DU
T/F: California, unlike the USBR, uses a grass reference for determining ETo - correct answer
✔✔True
T/F: There are only about 30 weather stations throughout the CIMIS network in California -
correct answer ✔✔False
T/F: 7 or 19 hr/day are typical, convenient irrigation set times for hand move sprinkler systems -
correct answer ✔✔False
