Agro-meteorology UE Past Papers Questions.


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(3767) Question Category: Short answers

Explain how each of the following instruments is installed , how it collects data, how it is reset and give at least one application of such collected data.

  1. Self-recording rain gauge
  2. Gunn Bellani Radiometer
  3. Compbell-Stokes Sunshine Recorder

Answer / Solution

UNSOLVED

(3768) Question Category: Mathematical Calculation

Compute the water requirement of maize grown under irrigation in August using the Blaney-Criddle method. Data from a nearby weather station give average daily maximum and minimum temperatures as 30°C and 20°C, respectively . The crop coefficient for maize ranges between 0.75 and 0.85. August has an average of 310 h of sunshine out of an annual average of 3,660 sunshine hours. In August , the maize crop is in its peak vegetative/ reproductive phase.

Answer / Solution

UNSOLVED

(3769) Question Category: Mathematical Calculation

Maize (Zea mays L.) Variety Ilonga COmposite White was grown for four months effective February 2011. Given the daily kc and Eto values for different crop growth stages in the table below, calculate this crop`s consumptive use and speculate on your results.

Month February March April May
kc 0.5 0.70 1.2 0.5
Eto(mm day-1) 6.0 5.80 5.5 5.5

 

Answer / Solution

UNSOLVED

(3770) Question Category: Mathematical Calculation

Compute evaporation using the data below, recorded from a Standard Evaporation Pan placed in an experimental plot.

Date Rainfall(mm) Cups
    Taken out added
01/04/`15 80.0 80(pan overflowing) 0
02/04/`15 12.0 10 0
03/04/`15 - -(Recorder was sick) --
04/04/`15 16.2 50 0
05/04/`15 0 0 8
06/04/`15 13.0 12 0
07/04/`15 0 0 8

Useful formulae

  1. mu=kp(0.46tc+8.13))
  2. ETm=ETo	imes kc
  3. E=Rpm 0.5N

Answer / Solution

UNSOLVED


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