The phrase references a problem encountered when fixing crossword puzzles, the place the answer pertains to a pesticide previously used on apple orchards however later prohibited resulting from well being and environmental issues. The clue directs the solver to determine the precise identify of this disallowed substance. For instance, a crossword clue may learn “Outlawed apple orchard therapy” with the reply being a chemical compound matching the variety of squares supplied.
The importance of fixing such a clue extends past easy wordplay. It highlights historic adjustments in agricultural practices and societal consciousness relating to the impression of chemical use on public well being and the ecosystem. Efficiently deciphering the reply demonstrates familiarity with each previous agricultural strategies and the evolution of environmental laws. The looks of such a clue in a crossword acts as a delicate reminder of doubtless dangerous substances that had been as soon as broadly accepted.