1889–1900
根瘤蚜抵达特尔纳瓦；葡萄委员会成立
根瘤蚜 1863 年出现在法国，1889 年在特尔纳瓦地区被确认。老迈克尔向萨克森农业协会理事会提交报告，提议设立葡萄委员会；委员会成立，他自 1889 年起被任命为主席。
Phylloxera, which had appeared in France in 1863, is recorded in the Târnava country in 1889. Michael sen. submits a memorandum to the council of the Saxon Agricultural Association proposing a viticultural commission; the commission is set up and he is appointed its president from 1889.