Match the bio-fertilizers and beneficial microorganisms listed in List-I with their primary agricultural roles or host associations listed in List-II.
- AzotobacterFree-living nitrogen-fixing bacterium for non-leguminous crops
- RhizobiumSymbiotic nitrogen fixer in legume root nodules
- Anabaena azollaeCyanobacterial symbiont used as bio-fertilizer in rice paddies
- MycorrhizaFungal association enhancing plant phosphorus absorption
Answer
Azotobacter matches with free-living nitrogen-fixing bacterium for non-leguminous crops; Rhizobium matches with symbiotic nitrogen fixer in legume root nodules; Anabaena azollae matches with cyanobacterial symbiont used in rice paddies; and Mycorrhiza matches with fungal association enhancing phosphorus absorption.
Each microorganism corresponds to its primary function in plant nutrition and crop management: Azotobacter fixes nitrogen freely in non-legume soils, Rhizobium forms symbiotic nodules in legumes, Anabaena azollae enriches nitrogen in paddy fields via water fern symbiosis, and Mycorrhiza boosts plant phosphorus absorption.
Step-by-Step Solution
Key Concept
Bio-fertilizers and Microorganisms in Sustainable Agriculture