Sampling Techniques for Determination of DDT Residue on Sweet Corn
- 1 December 1951
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 44 (6) , 1008-1010
- https://doi.org/10.1093/jee/44.6.1008
Abstract
Considerable variation occurred in DDT residues on 10 replicates of hand-dusted sweet corn of 5-, 10-, and 40-ear samples. The coefficient of variation for samples replicated 20 times dropped from 25% for 5-ear to 11% for 40-ear samples. If 25% variability is sufficient for comparisons to be made, then 5-ear samples replicated 10 times would be within this range. DDT residues ranged from 229 to 283 ppm. on husk-silk and less than 1.4 ppm. on kernel-cob samples. One to 1.7 ppm. apparent DDT residues were found on untreated kernel-cob and husk-silk samples.This publication has 3 references indexed in Scilit:
- Investigations of Corn Earworm Control on Sweet Corn in California in 195012Journal of Economic Entomology, 1951
- Apparatus for Mincing Biological MaterialsAnalytical Chemistry, 1949
- Quantitative Estimation of DDT and of DDT Spray or Dust DepositsIndustrial & Engineering Chemistry Analytical Edition, 1945