Apple Proliferation
Candidatus Phytoplasma mali 16SrX-A

Apple Proliferation (Candidatus Phytoplasma mali 16SrX-A) is a phytoplasm.

This phytoplasm causes witches broom on apple and causes a marked reduction on fruit size.

This phytoplasm has been identified by USDA-APHIS as a serious threat to US Agriculture and Natural Resources, and surveys have been planned for multiple states.

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Planned Surveys for Candidatus Phytoplasma mali 16SrX-A
Not all counties are required to report.