Question:hard

Read the statements about irrigation management in chickpea.
(A) Flowering and pod filling are the most critical stages for irrigation.
(B) Water requirement of chickpea ranges from 400-600 mm.
(C) Irrigating chickpea with saline water that has salinity of 10 mmhos/cm can reduce yield by about 55%.
(D) Chickpea is usually irrigated following check basin method.
(E) Under conditions of low evaporative demand as in North India, irrigation can cause lodging in chickpea.
Choose the correct answer from the options given below:

Show Hint

Chickpea cannot stand waterlogging, so rule out the check basin claim first.
  • (A), (B) and (E) only
  • (A), (B) and (D) only
  • (B), (C) and (E) only
  • (C), (D) and (E) only
Show Solution

The Correct Option is A

Solution and Explanation

Step 1: Understanding the Concept:
Chickpea agronomy differs sharply from cereal agronomy on the point of water. It is grown as a low-water, rainfed leaning crop, and both too little and too much water hurt it. We check each of the five statements against this working picture.

Step 2: Key Formula or Approach:
There is no single formula here, we weigh each claim against known crop-water behavior in chickpea: its critical growth stages, its total water budget, its salt tolerance, its irrigation method, and its lodging risk.

Step 3: Detailed Explanation:
Statement (A) holds up, because flowering and pod filling are the two stages where chickpea yield is most sensitive to a moisture gap, any shortfall here directly cuts flower or seed number.
Statement (B) also holds up, the crop's full water requirement across the season, counting stored soil moisture, rain, and any irrigation, is generally quoted in the 400 to 600 mm band.
Statement (C) does not hold up, chickpea's salt tolerance threshold is quite low, close to 1.8 to 2 dS/m, so at 10 mmhos/cm salinity the yield hit is much worse than 55%, the number given is too mild for that salinity level.
Statement (D) does not hold up either, since chickpea cannot take standing water around its base, growers use the furrow method rather than flooding the whole check basin.
Statement (E) holds up, because in the cool, low evaporative demand winters of North India, adding irrigation pushes the plant into excess leafy growth, and that soft, tall growth is what makes it lodge.
So only (A), (B) and (E) stand as true.

Step 4: Final Answer:
The correct combination is (A), (B) and (E) only, which is option 1.
\[ \boxed{\text{Option 1}} \]
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