The Combine Forum banner

growing peas after canola on canola

11K views 11 replies 11 participants last post by  dutchdeutz  
#1 ·
Im interested in trying a quarter of peas this year but the only ground i can put them on has been canola on canola would this work or would it be a very bad idea?
 
#3 ·
But peas on canola are worse than just about anything other than flax stubble. I would try hard not to do it and would much rather go into a cereal on that field and then stay out of canola for 4 or 5 years.

If you are dead set for doing this, I would use Myke Pro and Tagteam to double inoculate them. Maybe not at full rates, but close to it. Also, you are going to want to make sure you have sufficient P in the soil. Canola is a non-host to mycorrhizae, which peas rely heavily upon for nutrient uptake. The two inoculants should help rebuild that, but you still want to have good levels of P available.


Herbicide wise, Viper I think will be what you want. Authority isn't great for canola control, Edge won't do anything, and straight Odyssey may work, but I would be worried about if your canola seed from past years had some Clearfield pollen contamination.
 
#6 ·
Canola is a non-host to mycorrhizae, which peas rely heavily upon for nutrient uptake. The two inoculants should help rebuild that, but you still want to have good levels of P available.
Some of the reading I have done lately suggests that the mycorrhizae are still very alive in the soil the year following 1 year of growing canola if the ground was disturbed very minimally with zero till seeding. Not sure what the effects of 2 years of canola in a row would be.

Canola is a real pig for phosphate. If your soil test levels are great, then peas following canola should be just fine as long as there was not a sclerotinia problem in the canola.

On my farm Peas show a good response to phosphate that is readily available in soil solution, but not so good a response to adding 11-52 at seeding time. Don't know if the 11-52 is too toxic in the spring or what. If the canola crops have used up all the N you may have to apply a little bit with your peas.
 
#9 ·
Think there some good things in posts above. Would agree that peas after canola no problem and also that seedbed on canola stubble may be preferred. Also, since peas quite sensitive to amount of fertilizer with seed do think anything you can do to manage this(MRB, less toxic fert - IE power rich etc) is better as well. Without getting into the "bad" agronomy that this practice sounds like(I have done canola on canola so am not preaching against this per say) I would be curious in what sort of yield you got on your first canola, the yield the next year and what sort of yield you expecting on peas. Also, I would be curious as to what sort of numbers you were planning on(yield, price, costs) that possessed you to try this rotation this past year. When I did canola/canola, price on canola was over $13/b, seed $10/acre cheaper than this past Spring, N about $250/mt cheaper(NH3), P more than $250/mt cheaper, S the same. Even at that with extra spraying, extra fert I had almost extra $40/acre extra cost on 2nd year canola and 10% yield drag((another $65/acre) - did Pioneer canola plots on 2nd year canola so had weigh wagon comparison.
 
#10 ·
Funny how things are different in other areas. We can only grow peas on canola or flax stubble. Otherwise its too wet and it roots away. We get good yields this way. Use viper in crop and authority preburn usually. However diseases can be a problem. Have to fungicide usually twice as well. Canola-canola-peas? I don't think the OP is worried too much on crop rotations if he is already doing canola on canola.............