Biofertilizer 4

 Types of Biofertilizers -

 The various types of biofertilizers which help the plant to grow at different situations of its growth are -

 1. Nitrogen Fixing Biofertilizers 

 2. Phosphate Biofertilizers 

a. Phosphorous Solubilizing Biofertilizers 

b. Phosphorus Marshaling Biofertilizers 

 3. Biofertilizers forMicro-nutrients 

 4. Plant Growth Promoting Rhizobacteria 

5. Compost 

 1) Nitrogen Fixing Biofertilizers -

i. Increase soil nitrogen position ii. Fixes the atmospheric nitrogen in the soil and make it available to the shops 

 Samples Azotobacter, Nostoc, Rhizobium, Azospirillum 

.a) Azobacter 

i. Free living N- fixing bacterium 

 ii. Non-leguminous shops 

 b) Cyanobacteria 

i. Nostoc/ Blue green algae 

 ii. Free-living as well as symbiotic 

 iii. Fix atmospheric nitrogen to soil 

 c) Rhizobium 

i. Symbiotic N- fixing bacterium 

 ii. Leguminous shops 

d) Azospirillum 

i. Associative symbiotic N- fixing bacteriumii. Graminaceous shops 

2) Phosphate Biofertilizers -

a. Phosphorous Solubilizing Biofertilizersb. Phosphorus Marshaling Biofertilizers 

 a) Phosphorus Solubilizing Biofertilizers 

i. Solubilize the insolvable phosphate from organic and inorganic phosphate sources 

ii. Releases insolvable phosphorus in soil and fix in complexion minerals 

 iii. Cache organic acids and lower the pH to dissolve set phosphates in soil 

 Samples Species of Bacillus, Pseudomonas, Penicillium, Aspergillus 

b) Phosphorus Mobilising Biofertilizers 

Transfer phosphorus from the soil to the root cortex 

 Samples Arbuscular Mycorrhiza (AM fungi) 

i.Fungus penetrates the cortical cells of the roots 

 ii. Increase face area of roots 

iii.Displace of absorption equilibrium of phosphate ions which increases the transfer of P ions 

 iv. Stimulate metabolic processes 

v. Arbuscles absorb these nutrients into the root system 

 3) Biofertilizers for Micro-nutrients -

i. Bacterial species are Silicate and Zinc solubilizers 

 ii. Degrade silicates and aluminium silicates in soil 

 iii. Help in silicate riding 

 Illustration Bacillus sp. 

4) Plant Growth Promoting Rhizobacteria (PGPRs) 

i. Act as both Biofertilizer and Biopesticides 

 ii. Promote growth by 

 a) Bettered Nutrient Vacuity (Biofertilizers) 

b) Suppression of Plant Disease (Bioprotectants) 

 c) Phytohormones Production (Biostimulants) 5) Compost Biofertilizers 

i. Use beast soil to enrich soil with microorganisms 

 ii. Eco-friendly organic poison 

iii. Consists of nitrogen, phosphate solubilizing bacteria and various decomposing fungi 

. iv. Microorganisms breaks down organic matter ( dead shops, estate yard waste, cattle wasteetc.) 

 Samples Cellulolytic fungi, Liquid Biofertilizers 

.i. Liquid biofertilizers are suspensions having agriculturally useful microorganisms, which fix atmospheric nitrogen and solubilize insolvable phosphates and make it available for the plant 

.ii. Reduces the use of chemical poison by 15-40 

 iii. Long shelf life 

 iv. Farther temperature tolerant and contamination free 

v. Easy to produce and apply 

vi. Help to produce organic crops so as to contend in the global request.