Peter Dart — the soil microbiology lineage behind HayRite.
The Bacillus work that the H57 and DB38 strains descend from grew out of a research lineage stretching from Harvard and Rothamsted to the University of Queensland. Peter Dart's career sits at the heart of that lineage.
Academic foundation
✓ Confirmed Cabot Foundation Fellow at Harvard University in 1964–65 — a fellowship for advanced biological research awarded to scientists working at the frontier of plant and soil sciences.
✓ Confirmed Fulbright Fellowship at Harvard during the same period (1964–65), supporting international scientific exchange and cross-institutional research.
These early appointments placed Peter at the intersection of American and British soil microbiology traditions — working in a period when the field was rapidly formalizing the role of beneficial microorganisms in agriculture.
Rothamsted Experimental Station
Rothamsted is the oldest continuously operating agricultural research institution in the world, founded in 1843. Its long-term experiments on soil and plant biology have shaped most modern understanding of how microbial communities affect crop productivity.
Peter spent formative research years at Rothamsted contributing to that body of work — specifically on nitrogen-fixing bacteria, soil microbial communities, and the agricultural applications of beneficial microorganisms.
ICRISAT and ANU — bringing the science to the field
✓ Confirmed From 1975 to 1983, Peter served as Principal Scientist at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in Hyderabad, India — leading research on agricultural microbiology in some of the world's most demanding farming environments.
✓ Confirmed From 1983 to 1987, Peter was Senior Research Fellow at the School of Biological Sciences, Australian National University.
It was during this period that Peter's expertise attracted Agrigenetics (then the largest US seed company) and the Blue Circle program — the first biological control agent ever approved by the United States Environmental Protection Agency. Blue Circle was later withdrawn over safety concerns; the lesson — that biological products require both scientific excellence and uncompromising safety — has stayed with the work ever since.
University of Queensland
The bulk of the research lineage that produced HayRite's Bacillus strain selection happened at the University of Queensland, where Peter built and led decades of work on beneficial soil and feed microorganisms.
✓ Confirmed The H57 strain of Bacillus amyloliquefaciens — the sister strain to DB38 in HayRite — was characterized and developed through this Queensland research lineage. Published feeding studies on H57 (Ngo et al. 2021; Pan et al. 2022) trace directly to this work.
DB38 was selected from the same lineage and is manufactured at the same QUT MRBPP Mackay facility that produces H57.
Why this matters for HayRite
Most agricultural input products don't have a scientific provenance you can trace. HayRite does.
When you treat your hay with HayRite, you're applying a strain that descended from a research lineage built across Harvard, Rothamsted, and the University of Queensland — institutions whose work on beneficial microorganisms in agriculture spans more than a century combined.
That lineage doesn't make HayRite proven for every operational scenario. But it does mean the bacterial population you're applying isn't a random off-the-shelf Bacillus — it's a strain that was selected, characterized, and developed inside a research tradition that knows what it's doing.
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