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Estimating pea yields for cropping decisions

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    Estimating pea yields for cropping decisions

    I know this is a bit off topic for this board but this seems to be a lot more active board than the pulse board where you might wait three months for an answer.

    I have being doing pod and pea counts per plant and after doing the math, yield estimates appear to be 15 - 25 bushels per acre. I am finding anywhere from 5 to 15 peas per plant with a density of 5 - 6 scraggly plants per square foot. Doesn't sound like or look like much, but we have to remember when we seed at 3 bushels an acre we end up with 7 plants per square foot with one dud seed per acre. That makes 8 seeds on each square foot. If you have 5 plants averaging 10 peas per plant, that square foot now has 50 seeds translating to potentially an 18 - 20 bushel crop. There are forumlas to calculate yield based on 1000 kernal wt., plant density and number of seeds per plant which will bring in the same kind of yield estimate.

    So given that peas may not be a total writeoff as first thought, this presents some interesting decisions to make. A 20 bushel pea crop should be worth anywhere from $90 - $130 per acre depending on grade. However there is so little plant material this year that silage and greenfeed yields will be very low. Can anyone out there afford to pay $60 - $90 per tonne for in the field for silage? Where would that put a 1000 lb greenfeed bale? It appears that at these yield thresholds the greatest value in a pea crop is still in the seed.

    Now, after the rain, the bigger question revolves around regrowth of the peas and pod splitting. I am noticing pod spitting on plants that were nearly shut down but not quite. Moisture is being pumped back into the seed causing it to swell but the pod is not swelling with the seed so it splits. Still green plants are now starting to flower again. If we wait for the new flowers to produce pods we run the risk of losing quality along with more pod shattering but there is a chance yield could be increased. Dessication is a costly operation and there is no gaurentee it will ensure qaulity or early harvest. Anyone have thoughts on dessicating now versus waiting for this new growth to produce? This is a challenging year to say the least!

    #2
    Have you posted this to the pulse & special crops area? I will contact one of the moderators but would be interesting to get people who participate there ideas.

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      #3
      I will post it there as well. Thanks Charlie.

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        #4
        Miquelon,

        The chalenge this year will be to predict the weather... if we know what the weather will do, then we would know what would be the best thing to do with our crops...

        I have flax in exactly the same stage, as well as peas like you...

        This decision is going to be easy to judge in hindsight, but the normality of the weather, and what we might expect as far as rain and heat during harvest this year.

        Does a person spend money on a 20bu/ac crop, how much is recoverable, what about weed control for next year...

        I was traveling South of Edmonton and saw a farmer had swathed peas last Friday... they had already blown all over the place when they were only down a few hours and were still quite heavy and green.

        Your estimate is probably a little high on the yeild, 7 plants/sqft@12peas of average size/plant = between 10 and 15bu/ac I was told by someone who should know.

        But how many will be unrecoverable, shell out etc.etc.

        I was told that a farmer last year took a v rake and raked the peas while the ground was quite wet, it was said that it pulled quite a few peas out at ground level with the dirt content not being too bad when baled...

        It might be interesting to ask Crop Insurance what they estimate recoverable yield is, if you have Crop Insurance...

        I am told the old bread loaf JD stack makers with the paddle pickups are the most effecient at picking up the light material as they have actual suction created by the paddles...

        This just may be the year that we get to try everything, but no one thing may work all that well...


        Fun Fun Fun... I guess we must just make it through the fall safely, and help our neighbours to do likewise... to plant a crop and be most productive for next spring...

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