Effects of uniconazole treatment on 'Hass' avocado productivity and gas-exchange parameters under Mediterranean climate
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View abstract on PubMed
Summary
This summary is machine-generated.Uniconazole (UNI) effectively manages avocado tree growth, increasing flowering and fruit size. The 8 mL/tree dose offers the best balance for optimizing yield and quality in Mediterranean climates.
Area Of Science
- Horticultural Science
- Plant Physiology
- Agricultural Chemistry
Background
- Avocado production faces challenges from climate change, excessive growth, and labor costs.
- Gibberellin biosynthesis inhibitors, like uniconazole (UNI), are explored for managing tree architecture and productivity.
Purpose Of The Study
- To evaluate the impact of soil-applied uniconazole (UNI) on 'Hass' avocado tree vegetative growth, flowering, gas exchange, and fruit yield.
- To determine optimal UNI concentrations for enhancing avocado fruit quality and orchard management.
Main Methods
- Mature 'Hass' avocado trees were treated with three UNI concentrations (8, 12, 16 mL/tree) via drip irrigation over two years.
- Measurements included trunk diameter, floral bud density, flowering intensity, chlorophyll content, gas exchange, and fruit yield/quality.
Main Results
- UNI significantly reduced trunk diameter and increased floral bud density, indicating effective growth suppression.
- Enhanced flowering and increased carbon assimilation were observed, particularly in the first season.
- Higher UNI doses reduced total yield initially but improved fruit size and market class distribution.
Conclusions
- Uniconazole shows potential for optimizing avocado canopy architecture and fruit quality, especially in Mediterranean climates.
- The 8 mL/tree UNI application provided a favorable balance between growth control and yield.
- Further long-term studies are needed to refine dosage and assess commercial viability.
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