Agronomy - Study Mode
[#226] Rotooning is practiced as a matter of routine in
Correct Answer
(D) Sugarcane and napier grass
Explanation
Solution: Ratooning is an ancient practice of propagation of sugarcane in which subterranean buds on the stubble give rise to a new crop. It is also referred to as stubble crop, where stubble is the leftover part of the cane left underground after harvesting. This is practiced as a matter of routine in Sugarcane and Napier grass.
[#227] A farmer grows cotton, maize and wheat on 1 hec, 5 hec and 4 hec of land respectively. The average yields of cotton, maize and wheat per hec on his farm are 4q, 20q and 25q as against State averages of 5q, 10q and 20q for the respective crops. What is the crop-yield index of his farm?
Correct Answer
(D) None of the above
Explanation
Solution: A crop yield index of a farm is a number that denotes the average of the yields of various crops grown on a farm or in a locality to the yields of the same crops on another farm. It is calculated by dividing the gross cropped area by the net area available on the farm, multiplied by 100. Here, all the given options are not correct.
[#228] The sprinkler system of irrigation is most suitable for
Correct Answer
(C) Saline soils
Explanation
Solution: Sprinkler irrigation is a method that mimics natural rainfall by spraying water through a system of pipes and sprinklers. Undulated soils , or uneven terrains, pose challenges for traditional irrigation methods like surface irrigation due to irregular slopes and water flow issues. Sprinkler systems are ideal for such conditions because they do not rely on gravity or level surfaces to distribute water evenly. They allow for controlled water application and uniform coverage, making them highly suitable for undulated areas . In contrast, clay soils have slow infiltration rates, saline soils need careful water management to avoid salt accumulation, and acidic soils are more about pH management than irrigation method.
[#229] Botanical name of six row barely
Correct Answer
(A) Hordeum vulgare
Explanation
Solution: Hordeum vulgare is the botanical name of Barley. It is a member of a grass family and is a major cereal crop grown in temperate climates. About 70% of barley production is used as animal fodder while the remaining 30% is used as a source of raw material for fermentable drinks and beverages and as a component of various food.
[#230] Which of the following is cheaper fertiliser?
Correct Answer
(B) Urea
Explanation
Solution: Urea (Option B) is typically considered a cheaper fertilizer compared to other options listed. It is a widely used nitrogenous fertilizer due to its relatively low cost of production. Single super phosphate (Option A), dicalcium phosphate (Option C), and ammonium sulfate (Option D) generally tend to be more expensive than urea. Hence, the correct answer is Option B: Urea.