Biofertilizers and Green Manure
Biofertilizers (a type of organic fertilizers)
- Substance which contains living microorganisms ex. Azobacter, Rhizobium, Bacillus, Nostac, Anabaena
- when applied to seed, plant surfaces, or soil, it promotes growth by increasing the supply or availability of primary nutrients (nitrogen, Phosphorous etc.) to the host plant
- a type of cover crop grown primarily to add nutrients and organic matter to the soil.
- a green manure crop is grown for a specific period of time, and then ploughed under and incorporated into the soil while it is still green or shortly after flowering
- provides subsidy on purchase of seeds & on cost for production of seeds for green manure plants
- Helps in soil improvement and soil protection
- Provides forage for pollinating insects
- Deep rooting properties → Increase aeration of soil+ Efficient at suppressing weeds
- Fix nitrogen in soil, thus Less chemical fertilizers are required
- Provides habitat for predatory beneficial insects which kill and eat harmful insects thus less pesticides are required
- Leguminous plants require good amount of irrigation
- The “time” factor: you cannot plant the primary marketable crop during green manuring phase.