Biofertiliser Composition for Solubilising Fixed Soil Potassium
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Solution Overview
Problem
Existing fertiliser compositions fail to efficiently solubilize potassium present in the soil, particularly in unavailable structural and fixed forms, limiting its availability for plant uptake.
Innovation Solution
A fertiliser composition comprising Enterobacter xiangfangensis strain CECT 9264, niacin, carbohydrates, organic acids, and micronutrients like cobalt, manganese, iron, and zinc aminoates, enhances potassium solubilisation by soil microorganisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fertiliser compositions are used, then potassium is provided to the soil, but the solubilisation of unavailable structural and fixed potassium is insufficient
Solution Approach 1:
The patent introduces Enterobacter xiangfangensis bacteria as an intermediary organism that mediates between unavailable structural/fixed potassium and plant-available potassium. The bacteria produce organic acids that chemically interact with potassium-bearing minerals, transforming them into soluble forms that plants can absorb, thereby resolving the contradiction between potassium presence and potassium availability.
Solution Approach 2:
The invention changes the chemical parameters of the soil environment by introducing bacterial metabolites (organic acids) that alter the solubility characteristics of potassium. The fertiliser composition modifies pH, organic matter content, and microbial activity parameters to enhance the transformation of insoluble potassium into soluble forms, improving both reliability of solubilisation and productivity of plant uptake.
2Quantity of substance
If more potassium is added to the soil, then the total potassium content increases, but the availability of potassium to plants remains limited due to fixation in structural forms
Solution Approach 1:
Enterobacter xiangfangensis acts as a biological intermediary that releases potassium from structural minerals through organic acid production. This mediator enables the conversion of abundant but unavailable structural potassium into available forms, resolving the contradiction between high total potassium content and low availability for plant uptake.
Solution Approach 2:
The patent replaces mechanical/chemical fertilisation methods with a biological mechanism. Instead of adding more potassium salts that may get fixed, the system uses bacterial metabolic processes to dynamically release potassium from mineral structures, ensuring continuous availability despite high total potassium content in the soil.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition significantly increases the solubilisation of potassium, making it more available for plant absorption, with up to 21.9% improvement in solubilisation percentage over 7 days.
Implementation Method 1
These microorganisms are capable of solubilising rock dust from potassium mineral, such as micas, illite and feldspar, through the production and excretion of organic acids
Implementation Method 2
These microorganisms are capable of solubilising rock dust from potassium mineral, such as micas, illite and feldspar, through the production and excretion of organic acids
Implementation Method 3
niacin as a bacterial growth stimulator
Implementation Method 4
a source of carbon or energy, especially carbohydrates, particularly glucose, sucrose or lactose
Implementation Method 5
a solution of aminoates of cobalt, manganese, iron and zinc
Data Source
AI summary
The invention provides a fertiliser composition P, K, N, NP, PK, NK or NPK that includes an extract of Enterobacter xiangfangensis, strain CECT 9264, and niacin as a bacterial growth stimulator, in addition to a source of carbon and micronutrients.