St Augustinegrass NUF-76 Insect Resistance and Mowing Reduction
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Solution Overview
Problem
Existing St. Augustinegrass cultivars lack resistance to common insect pests like the southern chinch bug and plant hopper, and have rapid leaf extension growth rates that require frequent mowing, leading to increased maintenance costs and fuel consumption.
Innovation Solution
Development of NUF-76, a fine-bladed, dark green St. Augustinegrass with resistance to the southern chinch bug and plant hopper, characterized by slow leaf extension growth rates, resulting in reduced mowing frequency and lower maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing St. Augustinegrass cultivars are used, then they provide basic turf coverage, but they lack resistance to common insect pests like southern chinch bug and plant hopper
Solution Approach 1:
The patent applies parameter changes by selecting parent plants with specific genetic traits (dark green foliage color, narrow leaf width, insect resistance) and hybridizing them to create NUF-76 with improved resistance parameters. The slow leaf extension rate (parameter change in growth speed) is directly linked to enhanced insect resistance, as slower-growing tissue is less attractive to pests like southern chinch bugs and plant hoppers.
2Productivity
If existing St. Augustinegrass cultivars with rapid leaf extension are used, then they provide quick ground coverage, but they require frequent mowing leading to increased maintenance costs and fuel consumption
Solution Approach 1:
The patent changes the growth rate parameter by selecting parent plants with slower leaf extension rates and hybridizing them to produce NUF-76. This genotype exhibits reduced leaf extension growth rates compared to traditional cultivars, which directly reduces the frequency of mowing required and thereby decreases fuel consumption and maintenance costs while still achieving adequate ground coverage.
3Productivity
If existing St. Augustinegrass cultivars are used, then they establish turf quickly, but they suffer from high maintenance needs including frequent mowing and pest management
Solution Approach 1:
The patent optimizes the balance between establishment speed and maintenance frequency by changing the leaf extension rate parameter. NUF-76 maintains adequate turf establishment capability while exhibiting slower leaf extension that reduces mowing frequency from weekly to bi-weekly or less, significantly improving ease of operation and reducing maintenance burden.
Data Source
AI summary
Perennial St. Augustinegrass having plant hopper and southern chinch bug insect resistance, narrow leaf blades and slower leaf extension rates over time when compared with other St. Augustinegrass varieties thus requiring less frequent mowing.