What is in this article?:
- Pigweeds: chopping costs, burning fields and moldboard plows
- Clean ditch banks
- Moldboard plow
- Panel discussion at Pigposium discusses on-farm methods, costs, suggestions for control of glyphosate-resistant pigweeds.
- How deep into the fall should a farmer chop pigweeds?
- How to keep ditch banks clean?
Clean ditch banks
How do producers keep ditch banks clean in zero-tolerance fields?
Wildy: “We’ve gone in and mowed some and then used Gramoxone around the edges to try and keep them clean. (Some) fields have a turn-row all the way around where we could disk and keep them really clean.
“As for other fields on our farm … we let a lot of pigweed go to seed on ditch banks and roadsides, this fall. We’re going to have to figure out a way to (deal with those pigweeds). Roundup used to clean up a lot of ditches and we didn’t have to mow them. Now, we’ll have to do something else, incorporate something else. It will present us with a real challenge…
“I heard (my son) tell the guys running the hippers this fall not to hip as close to the banks. We’re leaving a place where we can drive completely around the fields. We anticipate going around with a sprayer with Gramoxone, or something, to keep the borders cleaned up.”
Where large pigweeds “are being chopped and carried out … some are piling them on the turn-row” before pick-up,” said Norsworthy. “Pigweed seed readily float and if those plants have produced seed, they’ll shatter even though you’ve chopped them. … Let’s be mindful of that.
“Also, from a zero-tolerance standpoint, if chopped pigweed plants have seed and we leave them in the field, we haven’t accomplished much in reducing the soil seed bank.”
What about carryover of Flexstar into the following year?
“Biologically, milo is pretty sensitive,” said Scott. “I haven’t really seen a carryover to a lot of other crops.
“Having said that … it’s off-label to use more than the allotted amount each year and we can’t recommend it.
“But in terms of real carryover, if you’ve irrigated and gotten a normal amount of rainfall, I don’t anticipate a lot of carryover. I haven’t had a lot of calls on that yet.”