Larval Symptoms of Corn Rootworm Progressive feeding on the roots causes difficulty for the plant to take up moisture and nutrients A reduced root system can also predispose the corn plant to fall over in wet or windy conditions Often th....

BACKGROUND: The western corn rootworm (WCR) is economically the most important pest of maize in Croatia. To predict WCR adult population abundance and variability, traditional, genetic and morphometric monitoring of populations was conducted over time through each phase of the WCR invasion process in Croatia. RESULTS: Through traditional monitoring it was shown that WCR established their current population and reached economic densities after 14 years persisting in the study area. Regression tree based modelling showed that the best predictor of WCR adult abundance was the total amount of rainfall. Genetic monitoring indicated that genetic differentiation increased over time at the intra-population level and morphometric monitoring indicated that wing morphotypes varied according to edaphic landscape changes. CONCLUSION: Traditional population metric surveys are important in WCR integrated pest management (IPM) as such surveys can be effectively used to predict population abundances. Novel-use monitoring techniques such as genetics and geometric morphometrics can be used to provide valuable information on variation within and among populations. The monitoring techniques presented herein provide sound data to assist in the understanding of both WCR ecology and population genetics and as such may provide more information than what is currently available using traditional techniques (e.g. sticky traps) and as such these additional techniques should be written into IPM for WCR.

About the author
Eric Achu Ndangoh
Mechanical Engineering Expert

I am a mechanical engineer scientist and inventor from the university of Liverpool, England, UK. In the las 16 years I have written and invented about 40 projects in science and technology for some of whic I already have a patent. I also have experiene as a teacher of the sciences and a University lecturer where I have taught Physics, Mathematics, Solid Mechanics and Mechanics of Perfect Fluids. At the moment I a keeping my options open and I would very grateful if any companies needing my services can gi ve me a call. I believe in dedication and hard work and as an Aries I ave the extra energy to put in and I am always ready to go the extra mile for the sake of others. Thanks.