320-HW_3_Soils_F09

320-HW_3_Soils_F09 - 11) Clay Loam soil has a AWHC = 1.75...

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BRAE 340 Irrig. Water Management ********* show your work and units ******* ******* READ THE SOIL PLANT WATER RELATIONSHIP CHAPTER DEFINE (Short answers): 1) Soil Moisture Content 2) Soil Moisture Tension 3) Saturation 4) Field Capacity (FC) 5) Permanent Wilting Point (PWP) 6) Available Water Holding Capacity (AWHC) 7) Management Allowable Depletion (MAD) 8) Soil Moisture Depletion (SMD)
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9) Clay soil has a FC = 40 % and PWP of 22 % moisture by volume. What is the AWHC in % and in/ft? 10) Clay Loam soil has a AWHC = 1.75 in/ft and PWP of 2.0 in/ft. What is the FC in in/ft and %?
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Unformatted text preview: 11) Clay Loam soil has a AWHC = 1.75 in/ft, the effective plant root zone is 2 ft, and the MAD is 50 %. What is the SMD max (SMD prior to irrigation) in inches? 12) Given the following representative soil log for a field; The effective root zone of the crop is 40 in. and the MAD is 45 %. Calculate the soil thickness and Layer AWHC. What is the SMD prior to irrigation? Layer AWHC (inches) Soil Layer Soil Texture Depth (inches) Thickness (feet) AWHC (in/ft) 1 S Loam 0-18 1.3 2 F Sand 18-36 0.8 3 L Sand 36-42 1 4 Loam 42-48 1.6...
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320-HW_3_Soils_F09 - 11) Clay Loam soil has a AWHC = 1.75...

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