Introduction
In this article, we will delve into the phenomenon of persimmon fruit drop, shedding light on the various theories and factors that contribute to this common issue among persimmon trees. As an expert gardener with extensive experience in cultivating persimmon trees, Ross Raddi shares his insights and observations regarding fruit drop, with a particular focus on the potential role of the persimmon psyllid.
Understanding Persimmon Fruit Drop
Persimmon trees are notorious for shedding their fruits, even in cases where the trees are well-established and cared for. While there are multiple theories surrounding this issue, one prevailing explanation attributes fruit drop to the trees’ young age. Additionally, the lack of pollination by a male persimmon can also lead to increased fruit drop.
Factors Contributing to Fruit Drop
Ross Raddi highlights several factors that may contribute to fruit drop, including excessive nitrogen levels due to overfeeding, limited sunlight exposure, and fluctuating water levels during the flowering stage. However, a new theory has emerged that focuses on the presence of the persimmon psyllid.
Exploring the Role of the Persimmon Psyllid
Ross Raddi introduces the concept of the persimmon psyllid, a tiny insect that may be responsible for the deformed leaves and subsequent fruit drop observed in persimmon trees. He draws inspiration from a persimmon tour video by the nursery Edible Landscaping, which discusses using fennel and other flowering plants to attract parasitic wasps that prey on the psyllid.
Observations on Growth Patterns
Ross Raddi shares his observations on the growth patterns of his roseanka persimmon tree, which has exhibited consistent fruit drop for the past six years. He notes that this particular tree displays distinctive characteristics, with discolored, small, and deformed leaves appearing alongside the flower production. In contrast, his other persimmon trees do not exhibit the same growth abnormalities.
The Potential Impact on Photosynthesis and Fruit Development
The presence of deformed leaves caused by the persimmon psyllid may limit the tree’s ability to carry out photosynthesis effectively. This can hinder the support provided to developing flowers, potentially leading to premature fruit drop. Although the flowers may still undergo pollination, they ultimately fall off the tree without fully maturing.
Testing the Theory
Ross Raddi expresses his uncertainty regarding whether the persimmon psyllid is the definitive cause of fruit drop. He acknowledges that the issue has only been observed on the roseanka tree and not on his other persimmon trees, which remain healthy. Nonetheless, he proposes a potential solution involving the cultivation of more flowering plants and the application of dormant oil in the fall to combat the psyllid infestation.
Conclusion
Understanding the various theories and factors contributing to persimmon fruit drop is essential for effectively managing and cultivating persimmon trees. While the influence of the pesimmon psyllid on fruit drop requires further examination, Ross Raddi’s observations offer a valuable perspective on the issue. By continuing to explore potential solutions and techniques, gardeners may be able to minimize fruit drop and enjoy a bountiful harvest of ripe and flavorful persimmons.
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