Periodic Physical Disturbance: An Alternative Method for Controlling Sitophilus zeamais (Maize Weevil) Infestation.
Sitophilus zeamaisMotschulsky 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 onS. zeamaismortality 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 withS. 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 liveS. zeamaisbetween the control and experimental treatments. Additionally, the number of liveS. zeamaisin 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.
Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA. rashid@iastate.edu.
Rashid
R
Suleiman
Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA. karosent@iastate.edu.
Kurt A
KA
Rosentrater
Department of Food Technology, Nutrition and Consumers Sciences, Sokoine University of Agriculture, Morogoro P.O. BOX. 3006, Tanzania. bchove06@yahoo.com.
Bernard
B
Chove
Sitophilus zeamais; insect mortality; maize; maize weevil; periodic physical disturbance; stored products
J Stored Prod Res. 2000 Jan 15;37(1):77-84
11124371
Crop Prot. 2007 Nov;26(11):1617-1624
18528532