PLANT NUTRIENT COMPOSITION AS A COMPONENT OF CROP PROTECTION
Fertilization practices may have unexpected side-effects on crop tolerance to pests. If integrated crop production is to be extensively used in the future, a greater understanding of relationships among soil characteristics, fertilization practices, plant nutrient content and the ability of pests to reduce yield or crop quality will be required. In this paper, data were gathered in an integrated fashion from commercial vegetable fields. These data consisted of plant analyses and pest incidence and damage measurements obtained from cooperating scouting networks. Next, mathematical transformations were performed on plant nutrient contents. Finally, these corrected values were used together with principal component analysis to associate plant composition with pest tolerance. Cercospora blight of carrots was related to Fe and Zn, aphid presence on sweet peas to P, and bacterial rot of celery to K, Fe and B nutrition.
, ., Michaud, M.-H. and Charbonneau, F. (1993). PLANT NUTRIENT COMPOSITION AS A COMPONENT OF CROP PROTECTION. Acta Hortic. 339, 85-98