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Q17 (IAS/2020) Geography › Indian Economic Geography › Crop climate requirements Official Key

"The crop is subtropical in nature. A hard frost is injurious to it. It requires at least 210 frost-free days and 50 to 100 centimeters of rainfall for its growth. A light well-drained soil capable of retaining moisture is ideally suited for the cultivation of the crop." Which one of the following is that crop ?

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Q. "The crop is subtropical in nature. A hard frost is injurious to it. It requires at least 210 frost-free days and 50 to 100 centimeters o…

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Origin: Books + Current Affairs Fairness: Low / Borderline fairness Books / CA: 2.5/10 · 7.5/10

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This is a classic 'Sitter' derived verbatim from NCERT Class X Geography. The phrase '210 frost-free days' is the unique biological signature of Cotton found in standard school textbooks. If you missed this, you are neglecting the basics while chasing advanced material.

How this question is built

This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.

Statement 1: Is cotton a subtropical crop that is injured by hard frost, requires at least 210 frost-free days, needs 50-100 cm of annual rainfall, and prefers light well-drained soils that retain moisture?
Statement 2: Is jute a subtropical crop that is injured by hard frost, requires at least 210 frost-free days, needs 50-100 cm of annual rainfall, and prefers light well-drained soils that retain moisture?
Statement 3: Is sugarcane a subtropical crop that is injured by hard frost, requires at least 210 frost-free days, needs 50-100 cm of annual rainfall, and prefers light well-drained soils that retain moisture?
Statement 4: Is tea a subtropical crop that is injured by hard frost, requires at least 210 frost-free days, needs 50-100 cm of annual rainfall, and prefers light well-drained soils that retain moisture?

Statement 1

Is cotton a subtropical crop that is injured by hard frost, requires at least 210 frost-free days, needs 50-100 cm of annual rainfall, and prefers light well-drained soils that retain moisture?

Origin: Direct from books Fairness: Straightforward Book-answerable

From standard books

NCERT. (2022). Contemporary India II: Textbook in Geography for Class X (Revised ed.). NCERT. > Chapter 4: The Age of Industrialisation > TYPES OF FARMING > p. 87

Presence: 5/5

“Cotton grows well in drier parts of the black cotton soil of the Deccan plateau. It requires high temperature, light rainfall or irrigation, 210 frost-free days and bright sun-shine for its growth. It is a kharif crop and requires 6 to 8 months to mature. Major cotton-producing states are– Maharashtra, Gujarat, Madhya Pradesh, Karnataka, Andhra Pradesh, Telangana, Tamil Nadu, Punjab, Haryana and Uttar Pradesh. Jute: It is known as the golden fibre. Jute grows well on well-drained fertile soils in the flood plains where soils are renewed every year. High temperature is required during the time of growth. West Bengal, Bihar, Assam, Odisha and Meghalaya are the major jute producing states.”

Why this source?

Explicitly states cotton grows in drier parts of the Deccan and requires 210 frost-free days.
Specifies cotton needs light rainfall or irrigation and bright sunshine, matching the 'frost‑free days' and rainfall components.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Cotton (Gossypium spp.) > p. 39

Presence: 4/5

“Cotton, a semi-xerophyte, is grown in tropical and subtropical conditions. A minimum temperature of 15°C is required for better germination at feld conditions. Te optimum temperature for vegetative growth is 21°-27°C and it can tolerate temperature to the extent of 43°C, but temperature below 21°C is detrimental to the crop. Warm days and cool nights with large diurnal variations during the period of fruiting are conducive to good boll and fber development. It requires about 50 cm of rainfall. In case of scanty rainfall, irrigation is required. Cotton is grown on a variety of soils, ranging from well-drained deep alluvial soils in the Northern Plains to black clayey soils in the Peninsular India (Fig.”

Why this source?

States cotton is grown in tropical and subtropical conditions, directly supporting the crop's climatic zone.
Gives a rainfall requirement of about 50 cm and notes irrigation is needed if rainfall is scanty; describes cultivation on well‑drained alluvial to black clayey soils.

Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 26: Agriculture > A TABLE SUMMARY OF THE MAJOR AGRICULTURAL CROPS OF THE WORLD TABLE III FIBRES > p. 257

Presence: 4/5

“Geographical Requiremants (a) Cotton is an annual, cultivated extensively from 35'N to 25'S within the tropics, best suited to the China type of climate. (b) A summer growing temperature of 21 °C (°F)) is best with bright, sunny days for harvesting. Rain at picking spoils the boll, from which the lint is extracted (c) Ample rain is preferred, about 1000 mm (tl0 inches). coming in frequent showers, with sunny periods in between. When moisture is less than 500 mm (20 inches), irrigation is necessary. (d) Cotton is very sensitive to frost; at least 200 days frost-free are (e) Medium loam is best.”

Why this source?

Declares cotton is very sensitive to frost, supporting the 'injured by hard frost' claim.
Gives an expected frost‑free period (~200 days) and describes medium loam/ample moisture as preferred soil/moisture conditions.

Statement analysis

This statement analysis shows book citations, web sources and indirect clues. The first statement (S1) is open for preview.

Statement analysis

This statement analysis shows book citations, web sources and indirect clues. The first statement (S1) is open for preview.

Statement analysis

This statement analysis shows book citations, web sources and indirect clues. The first statement (S1) is open for preview.

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Explanation

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