benifits of liquid fertilizer

LIMITATIONS OF CARRIER BASED POWDER TYPE BIO FERTILIZERS

Shorter shelf life
Sensitivity to temperature
More chances of contamination
Lack of identifiable character
Restriction on use as a measure of conservation( wood charcoal)
Unavailability of good carrier in local area
Quality inconsistency of carriers
Bulk sterilization problem in terms of economy and facilities
Poor moisture retention capacity
Labour intensive
Poor cell protection
Even under less contamination in packets the enzymatic activity of bacteria is disturbed
Problem of proper packing
High transport cost
Takes more time for quality control
Dosage contradictory to farmers


ADVANTAGES OF LIQUID BIO FERTILIZERS

Longer shelf life…12-24 months
No contamination
No effect of high temperature
No loss of properties due to storage upto 45° C
High populations of bacteria/fungus can be maintained ..more than 109 cells /ml upto 12-24 months
Easy identification by typical fermented smell
Cost saving on carrier material, pulverization, neutralization, sterilization, packing and transport
Easy to use
Dosage is 10 times less than carrier based powder bio fertilizers
Very high enzymatic activity since contamination is NIL

PHYSICAL FEATURES OF LIQUID Azospirillum

1) The colour of the liquid may be blue or dull white
2) Bad odours confirms improper liquid formulation and may be concluded as mere broth
3) Production of yellow gummy colour materials confirm the quality product
4) Acidic pH always confirms that there is no Azospirillum bacteria in the liquid





ROLE OF LIQUID Azospirillum UNDER FIELD CONDITIONS

1. Stimulates growth and imparts green color which is a characteristics of a healthy plant
2. Aids utilization of Potash, phosphorus and other nutrients
3. Increases protein percentage

PRODUCTION OF GROWTH HORMONES
Azospirillum cultures synthesize considerable amount of biologically active substances like vitamins , nicotinic acid, indole acidic acid and gibberellins. All these hormones / chemicals help the plants in better germination , early emergence , better root development

PHYSICAL FEATURES OF LIQUID PSM

Solution appears always turbid
Color may be creamy and depends on strain
Pleasant but sometimes mild smell
pH 4.5 or buffer but buffer of 6.5-&.0 ensures more than 2 years shelf life

EFFECT OF LIQUID PSM UNDER FIELD CONDITIONS

Encourages early root development
PSM produces organic acids like mlic, succinic,fumaric,citric, tartaric,and alpha ketoglutaric acid which hastens the maturity .
Increases the compatibility of other beneficial microbes with the plants
Stimulates formation of fats , convertible starches and healthy seeds
Helps rapid cell development in the plants and consequently increases the resistance towards diseases
Increases micro nutrient in the soil like Mn,Mg,Fe.B.Zn,Cu etc.

CONSTRAINTS IN VAM EFFICACY

Obligate symbionts- needs host for multiplication
Can not be cultured on synthetic media in laboratory
Problem in mass culture
Difficult to apply
Variation in soil nutrient status
Competition with indigenous population of mycorrhizal fungi
Phosphorus inhibition of mycorrhizal development
Slow growth rate of mycorrhizal fungi and slow development of mycorrhizal association
Incompatibilities with established cultural practices

PHYSICAL FEATURES OF LIQUID POTASH MOBILISING BACTERIA

Solution always brown in colour
Smell of Hydrogen Suphide or chocolate
pH 4.5 but buffer 6.5-7.0 ensures more tthn 2 yers shelf life

ROLE OF LIQUID BIO FERTILIZERS IN VARIOUS CROPS

Increases crop yield
Reduces need of chemical N,P & K fertilizers
Benefits to the next crop too, due to its residual effect
Enhances soil health and soil fertility
Returns are economically viable
Besides N.P. & K nutrition, growth hormones secreted increases the crop productivity
Disease and pest occurrence reduced