Anyone want to talk peas and desease?

[oldguy48]

Wonder if no till is not great for legumes? If a guy made worked fields black would that get rid of some disease?

I don't think we necessarily need to work them black but need to work them more. No till has been done for a lot of years and we are not getting the mix of soil & residue we used to. Mother Earth & her bugs will do a lot for the soil if given the chance. Thinking it is time to go back to spiking the fields once every three or four years to mix and loosen things up as compaction has become more of an issue as well. As I heard one time about weed resistance, " Never heard of a weed becoming resistant to steel yet." Wonder if the disease issue could apply here as well.

[TASFarms]

Which chemicals are inducing a disease increase in the following pulse year crop?

I'm struggling with what to do with regards to a proper rotation around here. It's typically dryer and disease prevalance has certainly been lower than many in wetter areas, but had been going wheat/legume/durum/mustard.

There are two crops that are presenting MAJOR problems in that rotation at the moment. Sawfly has completely ruined our ability to grow wheat around here, and likely will remain that way for the next 3-4 years i'm thinking. I shaved the ground with a flex header this year and literally pushed everything through the combine. There is no way I can afford to do that again in regards to lost time, repairs, and the thought of what a heavy rain could do to a crop laying completely on the ground when its warm out in august or september.

They have also deregistered all the old sawfly resistant CWRS's, so that leaves only midge tolerant wheat varieties, but I DO NOT have the bin space available to tie up for subsequent years seed as you can only seed midge tolerant once after you combine a crop off of seed you buy from a grower.

Went to sawfly resistant durum, and was happy with the results there (Stronghold), and as a rule I should be safe on cereal diseases around here with a one year break in between. So I could go durum/legume/durum/mustard.

The mustard is getting pretty hard to stomach as well... Poor yield potential, and even poorer weed control are making it a break even crop at best, and a weed seed bank multiplier at worst.

Short term dollar sign farming would say go Durum/legume, or durum/durum/legume, but IMHO thats setting oneself up for long term failure...

Durum and lentils share fusarium root rots.

[TASFarms]

I don't think we necessarily need to work them black but need to work them more. No till has been done for a lot of years and we are not getting the mix of soil & residue we used to. Mother Earth & her bugs will do a lot for the soil if given the chance. Thinking it is time to go back to spiking the fields once every three or four years to mix and loosen things up as compaction has become more of an issue as well. As I heard one time about weed resistance, " Never heard of a weed becoming resistant to steel yet." Wonder if the disease issue could apply here as well.

I’ve been banding fertilizer in the fall every three to four years. Think it needs more.

[TASFarms]

Anyone listen to sask pulse webinar on rot root. Testing after it’s dry shows false negative for root rot. Why spend reasearch on testing, they proved its in every field to. Just depends on how much. States university have studies going back over 20 years on
Aphanomyces

[Guest]

We use a 10 yr rotation
Has worked well

[furrowtickler]

It comes down to soil health and soil bacteria and fungus ratios that enhance to proliferation of the majority of fusarium issues like root rot that lead to many other diseases we are all facing . And what causes those imbalances. Anaerobic and compacted soils are a big culprit along with certain herbicides according to many studies.
Seed treatments and fungicides are band aid treatments to that issue for the most part and getting very expensive.
Tillage , crop rotation and proper fertility all play a role but don’t address the root of the problem per say .
Getting a balance of good soil bacteria in relation to the fungus pathogens is what is really needed and the only way to really combat fusarium problems in all crops IMO. No different that good / bad bacteria ratio in the guts of humans .
What’s needed is a test for those ratios in the soil then figure out how to address that first . I don’t believe there is one to date , or one that is readily available or affordable for farmers ?
We have tried many things to try and combat root rots but expenses add up quickly and soon your costs will outweigh any profit . Long crop rotation only viable solution currently other than trying to regain soil health . There are a few products available that show promise in regaining better soil health that may help.
Treflan does seem to have an effect on root rots in pulses . The Rack has done several years of work on that but it still does not address the basic issue that’s going on in the soil . Will have to look back at the studies they did to see if it was a reduction in fusarium root rots or aphanomyces.
When good soil bacteria get diminished, bad soil funguses tend to take over. From there it becomes very complex and expensive to suppress and crop stressors( drought , excess moisture , herbicide damage like flashing) become vastly exaggerated. The bigger the imbalance the worse the diseases like fusarium and aphanomyces take over it seems .
Proper fertility before and or foliars after do mitigate a lot of the plant stress but does not truly address the underlying issue from where it starts in an unhealthy soil environment.

[furrowtickler]

Sask pulse has some good info here ..
https://saskpulse.com/files/technical_documents/191115_Fusarium_RR_in_Pulses-compressed.pdf

[furrowtickler]

There are several studies like this , some done several years ago .

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5770481/

This is one of many but what studies are valid and not is very debatable.
Take it for what’s its worth , some of this has been fairly heavily scrutinized so take from it what you will .

Regardless of the debate it does point back to soil health and its importance on disease severity ... that’s the point .
If we can learn to mitigate unfavourable soil bacteria / fingus relationships then we can get a handle on some of these problems cost effectively?
Not sure but one needs to start somewhere.
Trying to fix the problem with more inputs after the fact will get us no where as producers .

[Marusko]

I don't think we necessarily need to work them black but need to work them more. No till has been done for a lot of years and we are not getting the mix of soil & residue we used to. Mother Earth & her bugs will do a lot for the soil if given the chance. Thinking it is time to go back to spiking the fields once every three or four years to mix and loosen things up as compaction has become more of an issue as well. As I heard one time about weed resistance, " Never heard of a weed becoming resistant to steel yet." Wonder if the disease issue could apply here as well.

Thistle and quackgrass developed resistance a long time ago...

[the big wheel]

I don’t think we should have to have a 10 year rotation and second even with that when you spray and then get a wet period or dry where you miss with the sprayer the peas are a foot taller and dark green that’s nothing to do with rotation length.