Question 37: Define
(i) Vermicompost
(ii) Green manure
(iii) Bio fertilizer
Answer:
(i) Vermicompost
Vermicomposting can be done in small bins to bathtub size vessels. The worms eat through the kitchen waste and paper that is added. It is also a moist process and any drainage is commonly used as a worm tea. Vermicomposting can be done on a larger scale, but the waste must be applied in thin layers to not overheat the pile or overfeed the worms. Worms are sensitive animals and may take off when conditions are not right.
(ii) Green manure
Green undecomposed material used as manure is called green manure. It is obtained in two ways: by growing green manure crops or by collecting green leaf (along with twigs) from plants grown in wastelands, field bunds and forest. Green manuring is growing in the field plants usually belonging to leguminous families and incorporating into the soil after sufficient growth. The plants that are grown for green manure known as green manure crops. The most important green manure crops are sunn hemp, dhaincha, pillipesara , cluster beans and Sesbania rostrata .
(iii) Biofertilisers
Biofertilizers are the microbial inoculants which can be usually defined as a preparation containing live or dormant cells of efficient strains of nitrogen fixing, phosphate solubilizing, and cellulolytic microorganisms, etc.
Some of the biofertilizers are given below :
- Bacterial Biofertilizers: e.g. Rhizobium, Azospirillum, Azotobacter, Phosphobacteria.
- Fungal Biofertilizers: e.g. Mycorrhiza
- Algal Biofertilizers: e.g. Blue Green Algae (BGA) and Azolla.
- Actinomycetes Biofertilizer : e.g. Frankia.
Add Comment