With reference to the circumstances in Indian agriculture, the concept of "Conservation Agriculture" assumes significance. Which of the following fall under the Conservation Agriculture ? 1. Avoiding the monoculture practices 2. Adopting minimum tillage 3. Avoiding the cultivation of plantation crops 4. Using crop residues to cover soil surface 5. Adopting spatial and temporal crop sequencing/crop rotations Select the correct answer using the code given below:
- A.1, 3 and 4
- B.2, 3, 4 and 5
- C.2, 4 and 5
- D.1, 2, 3 and 5
Correct answer
Explanation
The correct answer is C, 2, 4 and 5. Conservation agriculture rests on three principles: minimum soil disturbance, permanent soil cover and crop diversification through rotations.
The Food and Agriculture Organization describes conservation agriculture as farming that disturbs the soil as little as possible, through zero or minimum tillage, keeps the surface covered with crop residues or cover crops, and grows a sequence of different crops in space and time. Together these practices reduce erosion, keep moisture in the soil, build organic matter and save fuel and labour. In India it spread widely in the rice-wheat belt of the Indo-Gangetic plains, where wheat is sown with a zero-till drill or a Happy Seeder straight into the rice stubble.
A is wrong because it leaves out minimum tillage and crop rotation and includes statement 3. B is wrong because avoiding plantation crops is not one of the principles. D is wrong because it includes statement 3 and drops residue cover.
Exam tip: Conservation agriculture = minimum tillage + soil cover + crop rotation.
Practice Questions
View allWhich one of the following is applicable to collision-coalescence process of precipitation?
- A.Clouds which do not extend beyond the freezing level
- B.Clouds which extend beyond the freezing level
- C.All types of clouds
- D.Cirrocumulus cloud
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Collision-coalescence is the way rain forms in warm clouds, whose tops stay below the level where water freezes. In such clouds all droplets are liquid.
Read the full explanation →Identify the type of drainage pattern on the basis of the given characteristics :
1. It represents the most common pattern of streams and their tributaries
2. It occurs in areas of uniform rock type and regular slope
3. A map, or aerial photograph, shows a pattern like the veins on a leaf— smaller streams join the main stream at an acute angle
Select the correct answer.
- A.Dendritic
- B.Radial
- C.Trellis
- D.Centripetal
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A pattern that looks like the branches of a tree or the veins of a leaf, formed on uniform rock with a regular slope, is dendritic.
Read the full explanation →The Research Design and Standards Organization is the R&D wing of which one of the following organizations ?
- A.Bhabha Atomic Research Centre
- B.Indian Space Research Organization
- C.Indian Railways
- D.Defence Research and Development Organization
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The Research Design and Standards Organisation (RDSO) is the sole research and development wing of the Ministry of Railways. RDSO is headquartered at Lucknow.
Read the full explanation →Which one of the following Indian States has recorded negative growth population as per Census 2011?
- A.Manipur
- B.Mizoram
- C.Tripura
- D.Nagaland
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Nagaland was the only Indian state whose population fell between 2001 and 2011; its decadal growth rate in Census 2011 was about −0.6 per cent.
Read the full explanation →Piecing together the puzzle of geologic time to create and analyze historical maps of the Earth is known as
- A.paleoclimatology
- B.paleogeomorphology
- C.paleolithology
- D.paleogeography
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Paleogeography is the study of the Earth's geography in the geological past, and its main product is a set of maps showing where continents, oceans, mountains and shorelines lay at different times.
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