The definitive work on vegetable nutrition - nothing else we've seen comes close! Illustrates plant deficiency symptoms using more than 800 color photographs. Includes three volumes of detailed descriptions that teach what each nutrient does for plants and how to recognize the first and predominant symptom of deficiency. Suggests appropriate corrective dosages for your particular garden space, different methods of application, and the best time for treatment.
Created from 50 years' field experience throughout the world, and used in colleges, on large farms and small backyard gardens, to diagnose and treat plants and produce greatly enhanced yields of uniform quality vegetable and fruit crops on any soil, in any climate.