RESIDUES OF ALDICARB AND ITS OXIDES IN BETA-VULGARIS L AND SYSTEMIC CONTROL OF HETERODERA-SCHACHTII

  • 1 January 1979
    • journal article
    • research article
    • Vol. 11  (1) , 42-46
Abstract
Aldicarb residues in foliage of B. vulgaris 21 days after transplanting to soil treated with 1-5 .mu.g aldicarb/g soil were proportional to residues in storage roots, but 20 times as great. Initial concentrations of residues in roots 21 days after treatment were proportional to applied rates but declined by 50% when roots were stored 25 days at 24.degree. C. Mean respective concentrations of aldicarb, aldicarb sulfoxide and aldicarb sulfone were 8.7, 81.6 and 9.8% of the total residues. In separate tests, equivalent concentrations of toxic carbamates in roots resulted in similar levels of control H. schachtii. Systemic levels that completely suppressed development of females and males on sectioned roots were, respectively, 0.35 and 0.8 .mu.g/g of root tissue.