Answers are grounded in this paper and cite their sources.
From a survey of the literature bearing on the growth of plants in nutrient solutions, it appears that the experimental work most nearly approaching logical completeness is that recently carried out by Tottingham.! This writer employed 84 different solutions, all of approximately the same total osmotic concentration but each solution differing from all the others in its proportions of the four nutrient salts, mono-potassium phosphate, potassium nitrate, calcium nitrate, and magnesium sulphate.
No takes yet. Share an insight, caveat, or question.
J. W. Shive (1915) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: