Agronomy
From Tardis Wiki, the free Doctor Who reference
Agronomy was science of farming. Arthur Stengos was a prominent agronomist, widely considered to be one of the finest in "the galaxy". (TV: Revelation of the Daleks)
In 2986, the Sixth Doctor and Melanie Bush mistook a thremmatologist, professor Lasky, for an agronomist. (TV: Terror of the Vervoids)