Johnsongrass is a widespread perennial grass weed throughout the US, with herbicide resistant populations in the midwest, south, and mid-Atlantic. It spreads via rhizomes underground. Management: This information is based on Adam Davis and Bill Curran’s discussion of Johnsongrass management here. Managing perennial weeds that grow from both rhizomes and seeds, […]
Read moreSoybean Burndown – If You Haven’t Sprayed Yet, Good Luck Some weeds, like horseweed/marestail, can be very hard to control in POST if they’re not controlled prior to planting. If you have already burned down your soybean fields, be sure to look at them before planting and decide if you […]
Read morePalmer amaranth requires a well-planned, integrated approach to management in order to keep it at bay and stop new plants from establishing. A recent multi-state study showed that tillage-based weed management programs are most powerful against Palmer when they combine a PRE residual herbicide program with deep tillage using a moldboard plow. […]
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Have you ever seen pigweed flowering in the spring? In Corpus Christi, Texas, Texas A&M weed scientists observed mature seeds on Palmer amaranth by mid-March this year. This was followed by the the first siting of flower heads on Palmer plants on April 6 in College Station. Published on April […]
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Canada thistle is a common perennial weed in both conventional and organic cropping systems. It begins sprouting in mid-April to early May in the northern US, flowering mid-June to early July. It becomes difficult to control once it produces taproots and rhizomes, because 1) it spreads and reproduces via these […]
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