Defined Microbial Compositions for Sustainable Agriculture

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Solution Overview

Problem

The excessive use of chemical fertilizers in agriculture leads to environmental pollution and reduces crop quality and quantity due to the accumulation of heavy metals and radionuclides, necessitating a shift towards sustainable practices that reduce chemical inputs and greenhouse gas emissions.

Innovation Solution

Development of microbial compositions comprising defined sets of microbial species with specific functional characteristics, such as nitrogen metabolism, salt tolerance, and phytohormone production, applied to soil, plants, or seeds to enhance nutrient management and reduce chemical fertilizer reliance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If chemical fertilizers are used to increase crop yield, then productivity is improved, but environmental pollution and accumulation of heavy metals increase

Engineering Contradiction:

Improvecrop yieldVSAvoidenvironmental pollution

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the fundamental parameter of nutrient delivery from chemical fertilizers to microbial organisms. The microbial compositions contain multiple species that perform nitrogen fixation, phosphate solubilization, and other nutrient cycling functions, transforming the approach from external chemical input to internal biological processes within the agroecosystem.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces microbial compositions as intermediary organisms that mediate between environmental nutrients and plant uptake. These microbes act as biological converters, transforming unavailable nutrients into plant-available forms through metabolic processes, thereby reducing direct chemical fertilizer application and associated pollution.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If chemical fertilizers are applied to maintain soil fertility, then crop quality is maintained, but heavy metal accumulation in plants increases

Engineering Contradiction:

Improvecrop qualityVSAvoidheavy metal accumulation

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent employs microbial compositions that provide self-service nutrient cycling within the soil-plant system. The microbes continuously fix atmospheric nitrogen, solubilize phosphate, and recycle organic matter, creating a self-sustaining fertility system that reduces reliance on external chemical inputs and prevents heavy metal accumulation.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent uses composite microbial compositions containing multiple species (e.g., Rhizobium, Azotobacter, Phosphobacter, Mycorrhiza) that work synergistically. Each species contributes specific functions—nitrogen fixation, phosphate solubilization, stress tolerance—that collectively maintain crop quality without chemical fertilizers.

Inventive Principle:

Principle #40Composite materials

3Object-affected harmful factors

If sustainable agriculture practices are adopted to reduce chemical inputs, then environmental pollution is reduced, but productivity may decrease

Engineering Contradiction:

Improvechemical input reductionVSAvoidcrop yield

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

The microbial compositions exhibit multi-functionality, simultaneously providing nitrogen fixation, phosphate solubilization, plant growth promotion, stress tolerance, and disease suppression. This universal functionality replaces multiple chemical fertilizer types and pesticides, maintaining productivity while reducing chemical inputs across diverse agricultural conditions.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent employs dynamic microbial communities that adapt to varying environmental conditions, soil types, and crop requirements. The microbial compositions remain metabolically active and responsive, adjusting nutrient cycling and plant interaction mechanisms to optimize productivity under different sustainable agriculture scenarios.

Inventive Principle:

Principle #15Dynamics

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 microbial compositions improve plant growth, stress tolerance, and crop yields while reducing environmental pollution by promoting sustainable agricultural practices and minimizing the use of chemical fertilizers.

Implementation Method 1

nitrogen metabolism

Methodology Applied

Scientific EffectNitrogen metabolism:

Implementation Method 2

phosphate and/or calcium and/or zinc salt solubilization activity

Methodology Applied

Scientific EffectPhosphate solubilization:

Implementation Method 3

phytohormone production

Methodology Applied

Scientific EffectPhytohormone production:

Implementation Method 4

cellulolytic activity

Methodology Applied

Scientific EffectCellulolytic activity: Hydrolysis

Implementation Method 5

chitinolytic activity

Methodology Applied

Scientific EffectChitinolytic activity: Hydrolysis

Data Source

PatentUS11591274B2Defined microbial compositions

Publication Date: 2023.02.28 AMERICAN CHEM CORP

AI summary

Disclosed herein are compositions including cells of defined sets of microbial species (for example, 3, 16, 18, 19, 21, or 22 microbial species). Also disclosed are methods of using the microbial compositions that include contacting soil, plants, plant parts, or seeds with the composition. The microbial compositions are also used in methods of degrading biological materials, such as chitin-containing biological materials.