Subsurface Liquid Fertilizer Application Apparatus
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Solution Overview
Problem
Current agricultural practices in precision farming face challenges in effectively applying liquid inputs like fertilizers during planting operations, often resulting in over-fertilization or underutilization due to inadequate timing and location-specific application methods.
Innovation Solution
A liquid application apparatus that delivers fertilizers adjacent to the seed trench using a downwardly extending element with a relief mechanism and a liquid delivery tube, allowing for flexible mounting and angled positioning to ensure efficient fertilizer distribution without soil compaction or damage to plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If liquid fertilizer is applied on top of seeds in the planting trench, then fertilizer application is simplified, but seed burning (over-fertilization) occurs
Solution Approach 1:
The patent transitions from applying liquid fertilizer horizontally on the soil surface to applying it vertically at the bottom of the planting trench. The liquid application device is positioned to deliver fertilizer through the trench bottom, changing the spatial dimension of application from surface-level to subsurface, thereby avoiding contact with seeds while ensuring deep placement.
Solution Approach 2:
The trench bottom soil acts as an intermediary medium between the liquid fertilizer and the seeds. By applying fertilizer to the trench bottom rather than directly to seeds, the soil serves as a buffer that prevents direct harmful contact while still allowing nutrient transfer to developing roots.
2Object-affected harmful factors
If a separate trench is opened in the soil surface for liquid application, then fertilizer can be deposited away from seeds, but fertilizer underutilization occurs
Solution Approach 1:
The patent merges the seed planting operation with the liquid fertilizer application by using the same planting trench for both purposes. The liquid application device is integrated into the planting equipment, allowing simultaneous creation of the trench for seeds and the pathway for fertilizer delivery to the same location, ensuring close proximity without direct contact.
Solution Approach 2:
The liquid fertilizer is applied to the trench bottom before seeds are placed in the trench. This preliminary application ensures that when seeds germinate and roots develop, they immediately encounter the fertilizer in the surrounding soil, maximizing utilization while avoiding seed burning.
3Reliability
If liquid is applied at the bottom of the trench, then fertilizer placement is optimized, but device complexity increases
Solution Approach 1:
The liquid application device is designed to be mounted on existing planting equipment, making the planting machine perform dual functions: seed placement and liquid fertilizer application. This multi-functionality reduces the need for separate application equipment, thereby limiting the increase in overall system complexity while achieving precise subsurface fertilizer placement.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
Systems, methods and apparatus for monitoring soil properties and applying fertilizer during a planting operation. Various sensors are disposed in ground engaging components for monitoring soil properties. Liquid delivery systems are provided for injecting liquid into the soil adjacent to the seed planting trench formed by the planter row unit trench opening assembly.