Nitrogen-Fixing Bacterial Inoculant for Non-Legume Crops
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Solution Overview
Problem
Agricultural practices face challenges in reducing chemical fertilizer usage and greenhouse gas nitrous oxide emissions while improving plant growth rates and seed productivity, particularly in non-legume crops like Jatropha, Sorghum, and others, where nitrogen fixation is inefficient.
Innovation Solution
The use of a novel artificially manufactured formula containing nitrogen-fixing bacteria from the Enterobacter, Methylobacterium, Sphingomonas, and Pleomorphomonas genera, which efficiently colonize non-legume plants' aerial parts and root systems, reducing atmospheric nitrogen to ammonia and promoting plant growth without inducing plant defense reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nitrogen fertilizer is applied to non-legume crops, then crop productivity is improved, but greenhouse gas nitrous oxide emission increases
Solution Approach 1:
The patent applies self-service by introducing nitrogen-fixing bacteria that enable the crop to fix atmospheric nitrogen independently, reducing dependence on external nitrogen fertilizer application. This allows the crop system to provide its own nitrogen requirement, thereby maintaining productivity while eliminating the harmful nitrous oxide emission associated with chemical fertilizer use.
Solution Approach 2:
The patent uses nitrogen-fixing bacteria as intermediary organisms that mediate between atmospheric nitrogen and the crop's nitrogen requirement. These bacteria act as a biological bridge, converting atmospheric nitrogen into usable forms for the crop without requiring chemical fertilizers, thus resolving the contradiction between productivity and environmental harm.
2Speed
If chemical nitrogen fertilizer is used, then plant growth rate is improved, but dependency on external nitrogen source increases
Solution Approach 1:
The patent enables the plant to be self-sufficient in nitrogen supply by introducing nitrogen-fixing bacteria that continuously convert atmospheric nitrogen into ammonia and other usable forms. This eliminates the need for external nitrogen fertilizer application, allowing the plant to maintain rapid growth rates while becoming independent of external nitrogen sources.
Solution Approach 2:
The patent changes the nitrogen supply parameter from external chemical fertilizer to internal biological fixation. By altering the nitrogen acquisition mechanism from abiotic (chemical) to biotic (biological), the system achieves both rapid plant growth and independence from external nitrogen sources, resolving the contradiction between growth speed and external dependency.
3Quantity of substance
If nitrogen-fixing bacteria are introduced, then nitrogen fertilizer requirement is reduced, but bacterial colonization efficiency must be maintained
Solution Approach 1:
The patent uses plant growth-promoting rhizobacteria as intermediary agents that facilitate bacterial colonization and maintain reliable nitrogen fixation. These intermediary bacteria enhance the host plant's ability to support nitrogen-fixing bacteria, ensuring consistent colonization efficiency while reducing nitrogen fertilizer requirements through effective biological nitrogen fixation.
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
This approach significantly reduces nitrogen fertilizer requirements, enhances plant growth, maintains high chlorophyll content, increases fruit or seed numbers, and decreases nitrous oxide emissions, thereby improving agricultural productivity and environmental sustainability.
Implementation Method 1
nitrogen-fixing microorganisms (diazotrophs), mostly belonging to species in the Rhizobium, Sinorhizobium, Mesorhizobium and Bradyrhizobium genera, form a mutually beneficial symbiotic relationship with the bacteria supplying nitrogen source to the plants
Data Source
AI summary
The present invention relates to methods of reducing chemical fertilizer usage and greenhouse gas nitrous oxide emission and to methods of improving plant growth rate and seed productivity in agriculture through the application of a novel artificially manufactured formula containing a nitrogen-fixing bacterium that efficiently colonizes non-legume plants in aerial parts and the root system. The bacteria inocula and methods are particularly suitable for plants in the genera Jatropha, Sorghum, Gossypium, Elaeis, Ricinus, Oryza and Manihot.