Fecundity of and Plant Injury by the Pea Aphid as Influenced by Nutritional Changes in the Garden Pea1

Abstract

Garden peas grown in solutions deficient in N, P, K, Ca, or Mg significantly reduced the fecundity of Myzus pisi in comparison with rearings on full nutrient plants. Reductions were most pronounced on the N and P deficiencies; lesser on the P, Ca, and Mg deficiencies. Deficient plants succumbed earlier to injury superimposed by aphid feeding than did those on full nutrient.