Branched Rootstock Nursery Tree for Balanced Scion Development
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Solution Overview
Problem
Fruit trees of the double trunk type often experience uneven development of scions due to poor establishment on a single rootstock, leading to reduced fruit yields and increased pruning needs, which affects productivity and profitability in orchards.
Innovation Solution
A nursery fruit tree with a branched rootstock, where each branch is independently grafted with a scion, allowing for balanced development and higher fruit yields, reducing the need for corrective pruning and improving orchard efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two scions are grafted onto a single rootstock branch, then the tree structure is established, but uneven development of scions occurs leading to reduced fruit yields
Solution Approach 1:
The invention divides the rootstock into multiple independent branches, with each branch supporting a single scion. This segmentation allows each scion-rootstock connection to develop independently without competition, ensuring uniform growth and high fruit yields from both scions while eliminating the uneven development problem associated with grafting multiple scions on a single branch.
2Ease of operation
If a single trunk structure is used, then the tree architecture is simple, but dominant leader branch requires severe pruning throughout orchard lifetime
Solution Approach 1:
The invention creates an asymmetric dual-trunk architecture where two main branches emerge from the rootstock at different positions and angles. This asymmetric structure prevents the formation of a single dominant leader branch, as both trunks compete equally for resources and light. Consequently, the tree requires minimal corrective pruning throughout its lifetime, significantly reducing labor requirements while maintaining a complex but balanced architectural form.
3Quantity of substance
If double trunk type is implemented, then planting density can be reduced, but uneven development of scions reduces overall orchard productivity
Solution Approach 1:
By segmenting the rootstock into multiple independent branches each supporting a single scion, the invention ensures that each scion develops uniformly and productively. This allows orchards to reduce planting density by half compared to single-trunk systems while maintaining or even increasing overall productivity, as both scions on each tree contribute equally to fruit production without the uneven development that plagues traditional double-trunk grafting methods.
Data Source
Figure 1
AI summary
The present invention provides a method for producing a nursery fruit tree of at least double trunk type. The invention also provides a nursery fruit tree of at least double trunk type, ready for sale to growers to plant in an orchard.