The phrase "a single field of" is correct and usable in written English.
It can be used when referring to one specific area of study, interest, or expertise within a broader context.
Example: "In the realm of science, she has chosen to specialize in a single field of biology."
Alternatives: "one area of" or "a specific domain of".
Lately, it's not enough for a man to master a single job, or even a single field of endeavor.
Dedicating three years to a single field of study is a daunting commitment – especially if you're not sure what you'd like to do after graduation.
On one expedition she set out chasing a tip that there was a single field of 1,000 jars: "Abominable voyage, on tracks that often followed the summits, hardly trodden... frequent violent storms," she wrote.
Amir Attaran, another Harvard academic, estimates that the volume of DDT used to protect the entire high-risk population of Guyana for a year is equivalent to what a farmer might spray on to a single field of cotton.The treaty drafted in Johannesburg, which is due to be signed in May, is a welcome antidote to this nonsense.
In the story of the discovery of the structure of DNA, James Watson stars as the American whiz kid besotted with pretty girls and with making a name for himself; his British co-star, Francis Crick, is a bit older, a bit more refined, but still a renegade who can't quite earn a Ph.D. because he can't quite settle down to a single field of study.
It would be impossible to offer up a plan that works for all areas, or even for a single field of expertise.
One exception was a single field, representing 7% of agricultural land in the catchment, that had been treated with glyphosate shortly before soil sampling.
A potential advantage of selecting multiple fields as targets is that, compared to forecasting using a single field, temporal correlations of different topics may help improve the forecasting accuracy.
The values for 20 cells in a single field per gut of N = 20 guts were measured.
The pattern you describe of going in and out of collecting in a variety of fields may be more typical than the collector who collects within a single field over the course of decades.
This paper compares soil hydraulic properties of the same soil horizons sampled at different relief positions in a single field representing various degrees of soil erosion/deposition.
