Civil Engineering - Irrigation - Discussion

Discussion Forum : Irrigation - Section 2 (Q.No. 34)
34.
The field capacity of a soil is 25%, its permanent wilting point is 15% and specific dry unity weight is 1.5. If the depth of root zone of a crop, is 80 cm, the storage capacity of the soil, is
8 cm
10 cm
12 cm
14 cm
16 cm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
17 comments Page 1 of 2.

Fazeelat said:   1 decade ago
Would you please give me the solution step?

Badal shirbhayye said:   1 decade ago
How to solve?

Badal shirbhayye said:   1 decade ago
dw = sgd[Fc- PWP].
= 1.5x80x[0.25-0.15].
= 12.

Ipsita sahoo said:   10 years ago
Explain dw, sgd, [Fc-PWP]?

Anitha chetti said:   9 years ago
Here, s = Specific gravity of soil,
d = Depth of root zone,
Fc = Field capacity,
PWP = Permanent wilting point.

Mariya said:   9 years ago
dw mean?

Explain @Badal.

Animesh Mahanty said:   9 years ago
Thanks for the explanation.

Subha said:   8 years ago
@Mariya.

Here, dw means the depth of water zone. i.e., storage capacity of soil.

Kalu charan behera said:   7 years ago
For formula is .....(Yd/Yw)*d*(field capacity-permanent welting point)
Given data:-
Yd=1.5,
Yw=1,
Depth zone=80 cm,
Field capacity=35%=35/100=0.35,
Permanent wilting point=15%=15/100=0.15,
So, (1.5/1)*80*(0.35-0.15)=12 cm,
Correct answer is 12 cm.
(1)

Prasenjt said:   7 years ago
Here; Sp *d(fc-pwp).
(1)


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