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Insects 2016, 7(4), 51; doi:10.3390/insects7040051

Periodic Physical Disturbance: An Alternative Method for Controlling Sitophilus zeamais (Maize Weevil) Infestation

1
Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA
2
Department of Food Technology, Nutrition and Consumers Sciences, Sokoine University of Agriculture, Morogoro P.O. BOX. 3006, Tanzania
*
Author to whom correspondence should be addressed.
Academic Editors: Vincenzo Palmeri, Christos G. Athanassiou, Nickolas G. Kavallieratos and Orlando Campolo
Received: 24 June 2016 / Revised: 22 September 2016 / Accepted: 23 September 2016 / Published: 29 September 2016
(This article belongs to the Special Issue Alternatives to Chemical Control of Stored-Product Insects)
View Full-Text   |   Download PDF [734 KB, uploaded 29 September 2016]   |  

Abstract

Sitophilus zeamais Motschulsky is the most important insect pest of stored maize in tropical regions. The objective of this study was to determine the practicality of periodic physical disturbance on S. zeamais mortality and its adoption by smallholder farmers in developing countries. In this experiment, treatments and control were arranged in a randomized block design with three replications and three storage times in three regions of Tanzania. Region was used as the blocking variable. A total of 108 clean 20-L plastic containers were each loaded with 10 kg of fresh white dent corn and 0.50 kg of maize infested with S. zeamais. For the treatment, containers were disturbed twice a day, whereas for the controls the containers were not disturbed until the end of storage. The overall mortality rate (%) after 30, 60, and 90 days of storage were 88%, 96%, and 98%, respectively. A statistically significant difference (p < 0.05) was observed for the number of live S. zeamais between the control and experimental treatments. Additionally, the number of live S. zeamais in the treatment significantly decreased as storage time increased. This study shows the potential of a feasible, simple, affordable, and effective method of protecting maize grain for small-holder farmers in developing countries without using chemicals. View Full-Text
Keywords: Sitophilus zeamais; maize weevil; periodic physical disturbance; maize; insect mortality; stored products Sitophilus zeamais; maize weevil; periodic physical disturbance; maize; insect mortality; stored products
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MDPI and ACS Style

Suleiman, R.; Rosentrater, K.A.; Chove, B. Periodic Physical Disturbance: An Alternative Method for Controlling Sitophilus zeamais (Maize Weevil) Infestation. Insects 2016, 7, 51.

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