As we harvest the first crop of Hass avocados this year, we reflect on our journey of propagating and growing these trees. Hass avocado trees show remarkable productivity, bearing heavy crops consecutively without alternating fruit production.
Challenges Faced
The last three years presented significant challenges due to drought, which slowed plant propagation. Air layers took a long time to root and had high failure rates, making propagation uneconomical. Grafted trees also faced higher failure rates, with many dying in unprotected conditions.
Seed Germination Success
Fortunately, the seeds had very high germination rates. Seedlings grown as graft rootstocks continued to thrive even when grafts failed. Heavy rains early this year allowed the trees to flourish. The potted trees are now large with thick stems and branches. We plan to plant these trees to evaluate the fruit quality compared to the parent tree. We are not growing other avocado varieties, so we hope the seedlings will be true to type.
Cross-Pollination and Future Plans
Other avocado varieties are growing within 800 meters of our property, but different blooming times make cross-pollination with our Hass avocados unlikely. If the fruit quality is good, these seedlings can serve as valuable graft rootstocks that can absorb losses from failed grafts, particularly in harsh weather conditions. Improving vegetative propagation methods for Hass avocados beyond grafting and air layering remains a priority. We continue to enjoy the small, firm avocados the current crop produces.
Conclusion
The journey of growing Hass avocados has highlighted the resilience and potential of these trees. Overcoming propagation challenges has underscored the importance of exploring alternative methods and capitalising on the strengths of seed germination. By closely monitoring fruit quality by minimising cross-pollination possibilities, we can ensure the sustainability and success of our Hass avocado cultivation.
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