Question:

Which of the following turf grasses are used to develop a lawn in cooler areas of India?
A. Agrostis palustris
B. Cynodon dactylon
C. Lolium perene
D. Paspalum notatum
Choose the correct answer from the options given below:

Show Hint

Cool-season grasses like Ryegrass and Bentgrass are primarily \(C_3\) plants, while warm-season grasses like Bermuda (Cynodon) are \(C_4\) plants. This metabolic difference defines their temperature adaptation.
  • A and B only
  • A and C only
  • B and D only
  • C and D only
Show Solution
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The Correct Option is B

Solution and Explanation

Step 1: Understanding the Concept:
Turf grasses are broadly categorized into "cool-season" and "warm-season" grasses. Cool-season grasses thrive in temperatures between \(15^{\circ}C\) and \(24^{\circ}C\) and are suitable for high-altitude regions or northern latitudes with temperate climates.

Step 2: Detailed Explanation:

A. Agrostis palustris (Creeping Bentgrass): This is a classic cool-season grass. It is highly valued for golf course greens and fine lawns in temperate climates due to its ability to tolerate low mowing heights and its fine texture. In India, it is suitable for high-altitude hill stations.
B. Cynodon dactylon (Doob Grass): This is the most common warm-season grass in India. It is highly drought-tolerant and thrives in hot, tropical conditions. It goes dormant or turns brown in very cold climates.
C. Lolium perene (Perennial Ryegrass): This is a quintessential cool-season grass. It is known for quick germination and a lush green appearance in temperate zones. It is frequently used for overseeing warm-season lawns during winters or as a primary lawn grass in cool mountainous regions.
D. Paspalum notatum (Bahia Grass): This is a warm-season grass known for its heat and drought tolerance, primarily used in tropical and subtropical regions.
Therefore, Agrostis and Lolium are the appropriate choices for "cooler areas" of India.

Step 3: Final Answer:

Agrostis palustris and Lolium perene are the turf grasses suitable for cooler areas.
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