Hostname: page-component-7bb8b95d7b-5mhkq Total loading time: 0 Render date: 2024-09-18T15:45:33.564Z Has data issue: false hasContentIssue false
  • English
  • Français

Admixture of malathion and lindane with bagged maize

Published online by Cambridge University Press:  10 July 2009

W. M. Graham  and
S. P. L. Kockum
Get access Rights & Permissions [Opens in a new window]

Summary

An experiment was done in Kenya to test several formulations of lindane and malathion dusts as protectants of bagged maize, with which they were mixed, against reinfestation (post-fumigation infestation) by store pests. The experiment was in the form of a 9 x 9 Latin square employing 162 bags. Sampling initially and after 4 and 5¼ months gave data on bag weight-losses, dust present per bag, numbers of adults of Tribolium castaneum (Hbst.), Oryzaephilus surinamensis (L.), Cadra cautella (Wlk.) and Sitophilus oryzae (L.), and moisture-content changes.

The dust weights (which were expected to be the most reliable measure of treatment efficacy) showed that there was very little difference between malathion admixed at 8, 4 and 2 parts per million. The other six treatments were far less satisfactory and all were significantly different from one another, with the following order of values: lindane at 6, 3 and 1·5 p.p.m., diatomite, kaolin and control. All the other data generally supported these results.

The extreme importance in this experiment of cross-infestation from nearby stacks has been shown in the analysis and has been illustrated by plotting numbers of T. castaneum against dust-weight data. Interpretation of this curve has lent support to work with lindane and malathion published by E. A. Parkin in 1960.

The results emphasise the significance of the contribution of grain and mould metabolism to the total bag weight-losses. Some estimates are made of the savings relevant to the admixture of malathion.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 52 , Issue 4 , December 1961 , pp. 727 - 739
Copyright
Copyright © Cambridge University Press 1961

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Anderson, J. A. & Alcock, A. W. Ed. (1954). Storage of cereal grains and their products.—Monogr. Ser. Amer. Ass. Cereal Chem. no. 2, 515 pp. St. Paul, Minn.Google Scholar
Gunther, F. A., Lindgren, D. L. & Blinn, B. C. (1959). Biological effectiveness and persistence of malathion and lindane used for protection of stored wheat.—J. econ. Ent. 51 pp. 843–844.CrossRefGoogle Scholar
Kockum, S. (1953). Protection of cob maize stored in cribs.—E. Afr. agric. J. 19 pp. 69–73.Google Scholar
Kockum, S. (1958). Control of insects attacking maize on the cob in crib stores. —E. Afr. agric. J. 23 pp. 275–279.Google Scholar
Le Pelley, E. & Kockum, S. (1954). Experiments in the use of insecticides for the protection of grain in storage.—Bull. ent. Rcs. 45 pp. 295–311.CrossRefGoogle Scholar
Lindgren, D. L., Krohne, H. E. & Vincent, L. E. (1954). Malathion and chlorthion for control of insects infesting stored grain.—J. econ. Ent. 47 pp. 705–706.CrossRefGoogle Scholar
Parkin, E. A. (1960). The susceptibility of stored-product insects to contact insecticides.—Chem. & Ind. 1960 pp. 108–111.Google Scholar
Strong, E. G. & Sbur, D. E. (1960). Influence of grain moisture and storage temperature on the effectiveness of malathion as a grain protectant.— J. econ. Ent. 53 pp. 341–349.CrossRefGoogle Scholar
Van Wyk, J. H., Hodson, A. C. & Christensen, C. M. (1959). Microflora associated with the confused flour beetle, Tribolium confusum.—Ann. ent. Soc. Amer. 52 pp. 452–463.CrossRefGoogle Scholar