 I'm Joe Eichle, the Extension Weed Specialist at NDSU, based out of campus in Fargo. Out here at the Carrington Research and Extension Center today to do a virtual tour of our crops school. So what we're going to do now is go through our annual and popular herbicide motive action demo plot. So we've planted about eight crops one direction with some weeds and sprayed single active ingredient herbicides the other direction and we'll talk about symptomology of the herbicides on crops and weeds to figure out what we have out here. Our first herbicide stop here I'm standing in spring wheat is the crop and as you can see the spring wheat is actually very dead. So we've got a dead wheat crop if I look at the round of the weeds I'm looking at we have some wild buckwheat some of that is controlled some of the buckwheat still has some green in it and looks like it will go on to survive. Another weed I'm seeing quite a lot of is common malo some of it is untouched some of it has chlorotic symptoms but none of the malo is actually going to die here. So the weeds we have surviving wild buckwheat common malo we have killed our spring wheat crop if you see the strip behind me most things that we have are dead if I look at the other weeds or weed carcasses in this plot we've done a good job on a broad spectrum of weeds. So this would be our group 9 herbicide which is glyphosate controls a lot of our weeds and our crops but can be weak on some vines such as wild buckwheat common malo is another weed that we can have some weaknesses on. We don't have glyphosate resistant weeds in this plot so that's why we don't have any other escapes that we might expect in some parts of the state. For our second herbicide I'm standing in our corn block so here we have a round up ready corn hybrid what we're seeing is our corn is purple and chlorotic and stunted if we look around the weeds in this plot all the broadleaf weeds are untouched zero symptomology we have some wild oat and other grass weeds they are also chlorotic and turning that purple color so we have a herbicide broadleafs aren't affected grasses are affected pretty slow to work this is one of our group on herbicides in this case this is cluthidum the product we sprayed was select max so beyond the discoloration of grasses we can also pull out the growing point of grasses so for corn can bend down pull out the top of the world and we'll see in the chronic growing point that's a textbook symptom of a group on herbicide. For our next herbicide I'm standing in our pea block so what I'm seeing here is our peas are very stunted there's a lot of necrotic tissue on the peas if I look around the weeds that we have in here our grass weeds are largely unaffected we do have excellent control of some of our weeds there's two weeds that we did miss have no activity on them common lambs quarters and horseweed so those two broadleaf weeds no activity we do have some dandelion in this plot and there's some necrotic speckling of the dandelions as well so our symptom is necrotic tissue more activity on broadleaf weeds not a lot on grasses and we missed a couple of our broadleafs in this case we have a group 14 herbicide and we used fumesifin which is known as flex star or reflex so good on broadleaf weeds we missed some like lambs quarters and horseweed and we've not labeled for peas in this case for our next herbicide we've moved into the soybean block so I'm seeing what the soybeans they are stunted chlorotic and the veins of the soybeans are black or purple shows up better on the underside of the leaves when I look at the weeds we have a mix of activity on weeds we have some activity on grasses some on broadleafs it tends to be very species specific and the the symptomology is chlorosis and it's all located mainly on the new growing points of the weeds here so this would be a group two herbicide in this case we use trybenuron which is express so symptomology shows up on new growth and then on soybeans those black veins are textbook group two injury on soybeans for our next herbicide we're back in the soybean block when looking at here the soybeans are once again injured symptomology is chlorosis to bleaching on the newest trifoliates the the injury is located more around the leaf margin but we can see some trifoliates completely injured when I look around the weeds we've controlled our small seed of broadleaf weeds we have some large seed of broadleaf weeds escaped and some grass escapes what I don't see in this plot are any weed carcasses so we mix things up every year and do throw some pre-emergence herbicides into this screen and that's what we have here in this case a group 27 herbicide we sprayed isoxa flutol which is balance not labeled for soybean and we're seeing the textbooks symptomology of bleaching showing up on the soybeans here okay our next herbicide we're back in our pea block what I'm seeing here the peas are very twisted the growing points are are losing some color as well so very very effective on the peas when look around the weeds our grass weeds are all unaffected when look the broadleaf weeds all the broadleaf weeds are showing the same symptomology as the peas so we're seeing some twisting or some epinasty and some discoloration and really severe injury on some of the growing points so in this case this is a group for herbicide in this case we did spray dicamba so effective on most of our broadleaf weeds does nothing to our grasses as far as crops that we would spray this in sprayed in our grass crops or dicamba tolerant crops such as extend soybean okay our next herbicide we're back in the soybeans what I'm seeing is most of our soybeans in this plot are dead the soybeans that are along the edge of the plot they received a partial dose of the herbicide we have some unique light green symptomology on those soybeans when I look at the weeds our broadleaf weeds are mostly controlled we even did pick up our wild buckwheat that we missed in an earlier plot our grass weeds I see some of our grasses are dead some of our bigger grasses there is still green at the base and they're starting to grow out of this symptomology so a broad spectrum herbicide on grasses and broadleafs this is our group 10 herbicide which is glufosinate or liberty on a non-liberty link soybean broad spectrum can control most of our broadleaf weeds can be weak on grasses especially once they get some size on them for our last herbicide we're back in the corn and what I see here is our corn is severely injured there's a lot of necrosis expectually on the ends of the leaves if I look at the corn on the edge of this plot we have a lot of necrotic spots that have a halo around those spots when I look at the weeds our grass weeds we've controlled several but we have our large grass weeds that are escaping this application excellent control of many of our broadleaf weeds but we were weak on common lambscorders and on wild buckwheat so a broad spectrum herbicide effective on grasses and broadleafs so what we have here is our group 22 herbicide which is paraquat or grimox stone it's here's an interesting thing that we see in these demos every year we actually expected a little bit more activity out of paraquat especially on our on our grasses but we kind of get these weird things that happen every year and this is actually a real world situation where sometimes for whatever reason we have not teased out our herbicide was not as effective as we hoped