Biofertilizers are the alternatives to inorganic chemical fertilisers. We understand very lately the importance of the biofertilizers.

1. INTRODUCTION TO
Plant Growth Promoting Bacteria
(PGPB)
HAMEEDULLAH SHERIEF S M.Sc., M.Phil, SET.,
Assistant Professor,
Dept. of Microbiology,
Sadakathullah Appa College,
Rahmath Nagar, Palayamkottai.
PART I

2. The world in 2050?

4. Industry and Production @
2050
 Total world food grain
production in 2019-20 is at
280 million tons (MT).
 India’s food grain
production in 2019 - 20 is
estimated at record 291.95
million tons.
 At 2050 world will have 3
billion more mouths to feed
than it does today.
 Total expected world food
production in 2050 will be
400 – 450 million tons (MT).

5. Demand – production details of fertilizers
06-December-2019 18:06 IST
Sl.No Year Requirement
(Demand in LMT)
Actual Production
(LMT)
1 2016 – 17 614.33 414.41
2 2017 – 18 598.95 413.61
3 2018 - 19 603.00 414.85
4 2019 – 20 640.48 Upto to October 245.01

6. Environmental degradation &
Agricultural productivity
 Global warming
 Heavy rainfalls
 Floods
 Acidic Rains
 Wind erosions
 Land sliding

7. Environmental pollution and
health issues
 Three pollution causing agents
are physical, chemical &
biological
 Physical – noise, lighting,
vibration, temperature &
electricity
 Chemical – Solvents, acids,
metals, dust, pesticides
 Biological – bacteria, virus,
fungus/molds

8. ill- effects of Chemical
fertilizers
 Leaching out
 Polluting water basins
 Destroying micro-organism and friendly insects
 Making the crop more susceptible to the attack of
diseases
 Reducing the soil fertility and thus causing
irreparable damage to the overall system

10. Biofertilizers are the carrier based microbial inoculent
containing live or latent efficient strain of microorganism
Biofertilizer

11. What is biofertilizer?
 Novel components in integrated plant nutrients management.
 Cost effective, renewable source in supply of plant nutrients.
 Microorganisms and their association are exploited in
production of bio-fertilizers.
 Grouped in different ways based on their nature and function.
 Ecofriendly

12. Do you know the types?
 Nitrogen fixing biofertilizer
Eg: Azotobacter, Anabaena, Nostoc………
 Phosphate solubilizing biofertilizer
Eg: Phosphaticum, Bacillus subtilis, Bacillus circulans..
 Phosphate mobilizing biofertilizer
Eg: Acaaulospora sp., Scutellospora sp.,…
 Micro Nutrients based biofertilizer
Eg: Bacillus sp.
 Plant Growth Promoting Rhizobacteria (PGPR)
Eg: Pseudomonas

13. How it works?
 Improving physical & chemical nature of the soil
 Adding organic matter in the soil
 Solubilizing insoluble nutrient materials.
 Increasing the availability & utilization of nutrients.
 Secrets the growth hormones.
 Inhibit the disease percentage of seed.
 Germination percentage of seed increases.
 Inducing flowering & fruiting of crop.
 Reduced input cost & increase the crop production.

14.  It increase yield
 It effective in different weather
conditions
 It improve soil texture
 It protect plats from pathogens
 It is ecofriendly
 It increase vitamins and minerals