Water Hemp

[NWBuck]

OK...who's got the roundup resistant water hemp in plots? Probably a better question; who doesn't? What's everyone using that doesn't cost an arm and a leg? We saw a little of it last year, but I pretty much wasted the first spray not realizing what a problem it was going to be in a couple of the plots.

NWBuck

 

[HorseDoctor]

Assume you're talking bean plots? Liberty Link beans worked for me for a few years. Now ready to switch back to RR beans to try to try to get a handle on the velvetleaf.

 

[NWBuck]

It's everywhere...corn plots, bean plots, etc. and it's all RR seed. Tempted to see if we can find an old 6 row cultivator sitting around somewhere...

NWBuck

 

[Sligh1]

Good link here on round up resistant weeds- ID for them and which have resistance. http://www.iasoybeans.com/sites/default/files/production-research/WeedGuide.pdf

I ran all Liberty this year. Probably will for next couple years. In the corn- I'm running 2,4d on some areas along with other stuff and standard preemergents.

Ur options on round up corn are 2,4-d with some atrazine, ams, crop oil, "more round up", etc. U have more options coop can get for u.

Round up Beans.... Cobra, heavier Callisto, etc, etc etc. Id get on weeds ASAP. Bigger they get- harder to kill. I'd nuke em and also put down pre emergents. This year BEFORE I planted the beans- I put down prowl h2o which is good for pw & wh and I used Sonic. Now- coming back with Liberty - it's a clean & easy weed area to make one more pass on. Likely- I'll still probably add some dual II or warrant to my last spray.

 

[Scott]

Might as well mix some diesel in with all those chemicals Skip

 

[Sligh1]

I have thought about running unleaded fuel over a field and lighting a match! . Stuff is nasty. It does sound like a lot of herbicides & it is but it's pretty much the norm now days..... A standard post emergent at higher rates with adjuvacants run with them + 2 pre-emergents. Example on beans could be 2-3 qts round up + ammonium sulfate & pre-emergents like prowl & sonic. These weeds are tricky after 20-30 years of round up. I hate the herbicides but I've for sure needed to get more aggressive & using 2,4-d in corn or pre-bean burn down & switching to liberty, etc. I'm not going to let a few weeds concern me too bad but a lot of fields down by me have gotten majorly out of control and some huge impact to yields. Gotta break the round up resistance cycle for sure.

Next steps I'm looking into: Plutonium, flame throwers, nuclear radiation, napalm or possibly looking to turn the ground into Astro-turf.

 

[Oct-Lull]

No wonder these chems are showing up more and more in groundwater.

 

[Sligh1]

No wonder these chems are showing up more and more in groundwater.

Which ones? Atrazine is likely at a lower level with its max use laws in affect for 10-20 years now. Post emergents are gone from soil in a day. Pre-emergents often are new and regulated/researched more than they were with old school herbicides of 70's & 80's. The standards of past I imagine are still out & possibly seeing higher use are: prowl, 2,4-d and yes- I imagine atrazine is simply higher in amount applied BECAUSE we had a Gazillion acres get converted & dozed in when corn spiked at $7/bushel. It sickened me to see what some folks did as well. Now- the good news- crp sign ups are at "record highs" at least in my area and many others due to recent farm bill and drop in grain prices. I just planted 160 acres that has been farmed for at least 20 years. Bring on the crp!!! Love it. Wish farmers would replant all the trees folks dozed out on a whim 3-4 years ago.

 

[Booner]

It's everywhere...corn plots, bean plots, etc. and it's all RR seed. Tempted to see if we can find an old 6 row cultivator sitting around somewhere...

NWBuck

Corn

Durango 40 oz/acre
Callisto Xtra 22 oz/acre
AMS----3lbs/acre
Preference 1qt/100 gal (so 15 gals/acre applied you'd run 4.79 oz/acre)

Little more costly but super affective especially if you didn't put down a pre would be running

Halex GT 3.5pts/acre
class act 2.5gal/100 (so 15 gals/acre applied you'd run 48 oz/acre)

Beans

Flexstar 18oz/acre
Select maxx 12 oz/acre
Destiny HC 1/2gal/100gal
AMS 3lbs/acre

or

You can swap out flex star for flexstar gt 3.5 and run that @ a rate of 3.5pt/acre and get rid of the select maxx/flexstar combo.

All of these programs are under $50.00/acre if your able to get these chemicals in bulk Via your local Coop/chem retailer.....

Suggestion would be next year to swap out beans with Liberty Link instead of RR and give that a whirl. Extremely hard to beat the chemistry of Authority assist-6oz/acre as your pre; Liberty @ 38oz/acre with 3 lbs of AMS as your post, huge portion of guys who are now liberty are switching to these programs. Cost a bit more but weed resistance is huge and these are basically the only ways you're going to manage problematic resistant weeds

 

[hillrunner]

I have thought about running unleaded fuel over a field and lighting a match! . Stuff is nasty. It does sound like a lot of herbicides & it is but it's pretty much the norm now days..... A standard post emergent at higher rates with adjuvacants run with them + 2 pre-emergents. Example on beans could be 2-3 qts round up + ammonium sulfate & pre-emergents like prowl & sonic. These weeds are tricky after 20-30 years of round up. I hate the herbicides but I've for sure needed to get more aggressive & using 2,4-d in corn or pre-bean burn down & switching to liberty, etc. I'm not going to let a few weeds concern me too bad but a lot of fields down by me have gotten majorly out of control and some huge impact to yields. Gotta break the round up resistance cycle for sure.

Next steps I'm looking into: Plutonium, flame throwers, nuclear radiation, napalm or possibly looking to turn the ground into Astro-turf.

Do you have problems with the corn lodging when using 2,4-d?

 

[Sligh1]

Do you have problems with the corn lodging when using 2,4-d?

No but it's a concern... Don't spray when corn is in it's rapidly growing phase. I only do it before tassel and in areas I see major problems coming with WH, PW & others. My wet areas, I have had a huge problem with WH, PW, giant foxtail, cocklebur and a few others. My remedy there is spraying at lower temps outside, before corn gets too big - and also to kill things off just before the corn gets "big" and eventually tassels and canopies. Because the last few years have been so wet, I've done secondary sprayings, depending on weeds containing herbs such as 2,4-d, round-up or Liberty depending on the corn, atrazine (pre & post imact, I've actually seen it hurt some weeds, especially with crop oil), Dual II (Metolachlor), crop oil, AMS, etc. It's been bad enough in our wet areas where many of my neighbors have flown over Urea for supplementing leached N and some have flown over fungicides for their very narrow corn. Once my corn hits knee high, I've tackled the weeds hard and I've got some great pre-emergents on with the posts. Canopy over and usually game over. Thankfully corn is a lot easier to manage for weeds, IMO, than beans. My other solution on beans for weeds, beyond the obvious and pre-emergents, young weed spraying & switching to Liberty.... I run 7.5 or 15" rows.... Helps canopy faster and also helps retain moisture better in dry years. Beneficial in my region. Not so much in other regions up north but I won't go back to 30" ever in my neck of the woods.

got my Liberty arsenal with AMS ready to rock & roll and when those weeds get to about 3-4" tall and I feel like the beans can canopy out if I fry the weeds & add a Pre-emergent - done deal, last spray of the year. May be here pretty soon on a few of my fields.