Bill Johnson

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Recently there has been a number of calls and samples submitted to the Purdue Plant Pest Diagnostic Lab (PPDL) worried that they have frogeye on soybean. I know due to the issues we saw at the end of last season there is a bit of concern about managing frogeye.



The weed science program at Purdue University is searching for a research associate to provide support and leadership for our Field and greenhouse research program. See the link below or contact Dr. Bill Johnson if you have questions regarding the position. Job Summary Responsibilities for this position will include but are not limited to: Planning, directing and conducting field, greenhouse and laboratory experiments related to weed management in agronomic crops; including planning experiments, planting and managing the growth of plants, pesticide applications, collection of data and harvesting Working in conjunction with Purdue research personnel in weed science, agronomy and plant pathology, researchers at other universities and at various companies that fund some of this research Data management and analysis Preparing reports that will be submitted to a variety of groups including funding agencies and private industry Preparing manuscripts for publication in peer-reviewed journals and other presentations to the scientific community Facilitating[Read More…]




Adoption of Xtend soybeans is expected to reach 70-80% of the soybean acres in the U.S. in 2019. The approval of Enlist E3 soybean imports by China and the Philippines earlier this year has allowed for full commercialization in the U.S. and provided farmers with another auxin herbicide (2,4-D choline) in their soybean weed management programs.




Wild garlic (Allium vineale) has shown up in many Indiana no-till corn and soybean fields this spring especially, in southern Indiana.  Wild garlic is most troublesome in wheat, where aerial bulblets contaminate harvested grain and impart the garlic flavor into processed products such as wheat flower.  Infestations in corn and soybean fields have less adverse effects on the crop, but can spread quickly across fields and are difficult to control with typical burndown treatments of glyphosate and 2,4-D. Management of wild garlic must occur early in the spring as this perennial will quickly become reproductive in mid to late spring.  Wild garlic produces aerial bulblets and begins to senesce in late spring to early summer.  As with all weeds, wild garlic management needs to occur prior to seed or in this case bulblet production to reduce future infestations.  Ideally herbicide applications should take place in early April when the wild[Read More…]