One of Judson's research articles published in 1978[24] with B. Kishen Rao, S. S. Thakur and B. Juilus Divakar entitled The effects of a juvenile hormone analogue on the male reproductive organs of the red cotton bug, Dysdercus cingulatus (Heteroptera) appeared in the scientific journal Experientia (now Cellular and Molecular Life Sciences),[24] He was much active among the academic fraternity in Hyderabad, India.

In 2007, he co-organized a National Conference on Biodiversity Conversation and Human Wellbeing, which was conducted jointly by the Department of Zoology (OU) and Sálim Ali Centre for Ornithology and Natural History.

[26] In 2009,[14] Judson convened a national symposium on the theme Implications of climate change on mosquito-borne diseases and its impact on public health[14] at Sir Ronald Ross Institute of Parasitology.

[37] Judson is also on the Advisory Board of Genesis Urban and Rural Development[38] under whose aegis a National Conference on emerging challenges and opportunities in Agriculture, Social, Plant, Environment, Cooperatives and Technology was held in 2016.

[42] Judson is the present India representative[43] of European Baptist Mission International overseeing social action programmes[44] together with 16 partners in the country.