Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Robert G. Hartzler"'
Autor:
Tyler J Grant, Kelsey E Fisher, Niranjana Krishnan, Alexander N Mullins, Richard L Hellmich, Thomas W Sappington, James S Adelman, Joel R Coats, Robert G Hartzler, John M Pleasants, Steven P Bradbury
Publikováno v:
BioScience. 72:1176-1203
The North American monarch butterfly (Danaus plexippus) is a candidate species for listing under the Endangered Species Act. Multiple factors are associated with the decline in the eastern population, including the loss of breeding and foraging habit
Publikováno v:
Crop Protection. 116:121-125
Field experiments were conducted to investigate impacts of herbicide injury to common milkweed (Asclepias syriaca L.) on oviposition preference of monarch butterflies (Danaus plexippus Linnaeus). Common milkweed seedlings were transplanted in patches
Autor:
Kris J. Mahoney, Robert G. Hartzler, William G. Johnson, Florian Diekmann, Robert A. Ford, David E. Stoltenberg, John Cardina, Mark M. Loux, Ramarao Venkatesh, Brian J. Schutte, Robin Taylor, Emilie E. Regnier, S. Kent Harrison, Adam S. Davis, Christopher Holloman
Publikováno v:
Weed Science. 64:361-377
Giant ragweed has been increasing as a major weed of row crops in the last 30 yr, but quantitative data regarding its pattern and mechanisms of spread in crop fields are lacking. To address this gap, we conducted a Web-based survey of certified crop
Publikováno v:
Weed Science. 62:267-279
First- and second-year seedbank emergence of 23 summer annual weed species common to U.S. corn production systems was studied. Field experiments were conducted between 1996 and 1999 at the Iowa State University Johnson Farm in Story County, Iowa. In
Autor:
Robert G. Hartzler, Douglas D. Buhler
Publikováno v:
Soybeans: Improvement, Production, and Uses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6954b7575f53351a22998e5264877794
https://doi.org/10.2134/agronmonogr16.3ed.c18
https://doi.org/10.2134/agronmonogr16.3ed.c18
Publikováno v:
Weed Technology. 23:17-22
Studies were conducted in 2005 and 2006 at three Iowa locations to determine the effect of soybean seeding rate and glyphosate application timing on weed management and grain yields in glyphosate-resistant soybean. End-of-season weed populations were
Autor:
Fabian D. Menalled, David N. Sundberg, Craig A. Chase, Lance R. Gibson, Paula R. Westerman, Adam S. Davis, Robert G. Hartzler, Andrew H. Heggenstaller, Philip M. Dixon, Matt Liebman
Publikováno v:
Agronomy Journal. 100:600-610
We conducted a 9-ha field experiment near Boone, IA, to test the hypothesis that yield, weed suppression, and profit characteristics of low-external-input (LEI) cropping systems can match or exceed those of conventional systems. Over a 4-yr period, w
Autor:
Robert G. Hartzler, Micheal D. K. Owen
Publikováno v:
Proceedings of the Integrated Crop Management Conference.
Autor:
Matt Liebman, Robert G. Hartzler, Paula R. Westerman, Andrew H. Heggenstaller, Philip M. Dixon, Fabian D. Menalled
Publikováno v:
Weed Science. 53:382-392
To improve understanding of relationships between crop diversity, weed management practices, and weed population dynamics, we used data from a field experiment and matrix models to examine how contrasting crop rotations affect velvetleaf. We compared