Question

The discharge capacity required at the outlet to irrigate 2600 ha of sugarcane having a kor depth of 17 cm and a kor period of 30 days is

• A. $2.3{\text{m}}^3\text{/s}$
• B. $1.71{\text{m}}^3\text{/s}$
• C. $14.7{\text{m}}^3\text{/s}$
• D. $0.18{\text{m}}^3\text{/s}$

Answer 1

The correct option is B $1.71{\text{m}}^3\text{/s}$

Given: Area = A = 2600 ha
$\text{Kor depth}=\Delta =17\text{cm}=0.17\text{m}$
$\text{Kor period}=B=30\text{days}$
$\text{Discharge capacity required at the outlet to irrigation}=$
$Q=\frac{A\times \Delta }{B\times 86400}=\frac{2600\times {10}^4\times 0.17}{30\times 86400}$
$=1.71{\text{m}}^3\text{/sec.}$
Note:
1. Kor watering: The first watering after the plants have grown a few centimetre high is known as kor watering.
2. Kor depth: The depth of water applied during this watering is called kor depth.
3. Kor period: The kor watering must be done in a limited period which is known as kor period.