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- Subject
- Soil Scienceagriculture-mcqs › soil-science
- Published
- 4 Nov 2020
- Last updated
- 28 May 2026
Explanation
Blue-Green Algae (BGA) was recognized as a nitrogen fixer in paddy fields by P.K. Dey, distinguishing his contribution from others such as Beijerinck and Fred.
More Soil Science MCQs
Practice related questions from the same subject.
- 1.Which type of climate is most favorable for optimal crop growth and yield?
- 2.What term describes extensive regions of the Earth that share similar climate, soil, and communities of plants and animals?
- 3.What percentage of the Earth's fresh water is contained within lakes, reservoirs, and rivers?
- 4.What term describes the process of water moving downward through the layers of soil?
- 5.What is the term for the quantity of water that oven-dried soil at 105°C can absorb when placed in an environment with 100% relative humidity?
- 6.Which group of plants requires a significantly large quantity of water for their growth?
- 7.What components are found in both plant and animal residues?
- 8.From which country is the Journal of Plant and Soil published?