At age 16 he went to the famous Internato Santo Antônio in Blumenau, Santa Catarina, where he received his high school diploma with habilitation in accounting.

He transferred two years later to the Escola de Agronomia Eliseu Maciel in Pelotas, Brazil, where he graduated in 1963.

Dr. Siewerdt had a profound impact in the study and improvement of native grasslands in southern Brazil through over forty years of research and training of masters (23) and doctoral students (3).

The efficiency of systems aimed at production and storage of hay from native pastures has been significantly improved by his research results.

He has served numerous times in editorial boards of scientific journals and former students of his hold positions in academia, industry and government.