Population Dynamics and Damage Potential of Belonolaimus sp. on Corn
AbstractThe population dynamics and damage potential of an undescribed species of Belonolaimus were investigated for 2 years in a naturally infested commercial corn field in southwestern Kansas and for a third year in a field microplot study. Population trends and vertical distribution of nematode life-stages were monitored and relationships between corn yields and initial or midseason nematode population densities were described using regression analyses. Nematode populations in field plots and in the top 30 cm of microplots increased following seedling emergence, then declined steadily. Numbers of adult nematodes remained relatively stable in all studies, but shifts were observed in the vertical distribution of females in microplots. Females and juveniles in microplots were concentrated in the upper 30 cm of soil 3 weeks after planting but were below normal sample depths by mid-July. Corn yields decreased linearly with increasing initial and midseason nematode population densities. Key words: Belonolaimus sp., corn, crop loss, damage potential, population dynamics, sting nematode, vertical distribution, Zea mays.
Copyright and Permissions
All material published by the Society of Nematologists (SON), except for papers prepared by United States and Canadian government employees, is copyrighted and protected under the U.S. copyright law. Under the Copyright Act of 1976, the term of copyright for materials registered by an organization is 75 years from the date first published. Before publishing any manuscript, SON requires that authors transfer full and complete ownership of any copyright to SON by signing a JON Page Charge/Copyright Form (.pdf). SON then registers the copyright. Subsequent use of published materials requires written permission from the SON and may be obtained by contacting the current Editor-in-Chief and state where and how the material will be used.
The author warrants that the article is an original work not published elsewhere in whole or in part, except in abstract form, and that the author has full power to make this grant. If portions of the article have been published previously, then the author warrants that permission has been obtained from the copyright holder and the author will submit a copy of the permission release with this copyright transfer form.
SON shall claim no proprietary right other than copyright. Authors and coauthors retain the right to revise, adapt, modify, or otherwise use all or part of the article in future works of the author(s), such as press releases, lectures, and reviews, provided that all such use is for the personal noncommercial benefit of the author(s). All patent rights are retained by the author(s).