Prof. Lwoga trained as an agriculturist at Makerere University, Kampala in Uganda then joined the then Faculty of Agriculture of the University of Dar-es-Salaam (UDSM) at Morogoro as a Tutorial Assistant in 1971.

In the following year, he was awarded a Commonwealth Academic Staff scholarship to undertake studies on the productivity and quality of perennial ryegrass at the University of Wales, Aberystwyth (United Kingdom) which culminated in the award of a PhD degree in 1975. 

In the next ten years or so, Prof. Lwoga taught undergraduate and graduate students and conducted research in tropical pasture productivity and management at Morogoro. In 1980 he won a Fulbright-Hayes Fellowship for Senior Scholars (USA) which enabled him undertake research on “nitrogen fixation and transfer in grazed grass-legume mixed pastures” at the University of Hawaii (USA). 

In 1982 he attended a course on “rangeland ecology, management and productivity” in the USSR, under the sponsorship of the United Nations Environment Programme. When SUA was established in 1984 (replacing the Faculty of Agriculture of UDSM).

Prof. Lwoga was appointed Dean of the Faculty of Agriculture, then Deputy Vice-Chancellor in 1985, full professor in 1986 and Vice-Chancellor in 1988. 

During his tenure as Vice-Chancellor (1988-2006) SUA made considerable growth in terms of student enrolment, number and diversity of degree programmes, research activities and number of partnerships with academic/research and funding institutions. 

He has been a member or chairperson of governing boards of numerous academic and research institutions in and outside Tanzania, and has served on a number of panels including;

1. The Panel of the Consultative Group on International Agricultural Research for the Third External Programme and Management Review of the International Livestock Centre for Africa (ILCA), Addis Ababa, Ethiopia (1991/92), and 
2. The Panel of the Inter-University Council for East Africa for the Review of the Council’s Structure and Performance, Kampala, Uganda (1999). 
3. Chairman of the Board of Directors of the Higher Education Students’ Loans Board (Tanzania). His current research focuses on the productivity, persistence and quality of tropical grass-legume mixed pastures.