- Jan 17, 2021
- Reaction score
- Ontario, Canada
Do you think the primary factor here is too high temperatures? When it was mentioned in earlier posts here that farmers had soybean crops planted in May, that got my attention, because as a 'bean' I assumed it preferred heat. I wonder now if some of its germination requirements are actually cooler weather, and require an earlier planting. Last year my germination was 100%. I replanted everything, possibly in vain, right next to the original row just in case. If they do sprout I'll have to really thin them. I did get Sayamusume to maturity 2 weeks early last year by wide spacing.Ironically, Hokkaido Black was one of those affected for me as well. Only 4 sprouts out of a 15-foot row (which is at least better than the three completely dead plantings). That is especially surprising given that I over-sow heavily, and usually need to thin quite a few. T-239, a 2012 soybean which had poorer germination test results than Hokkaido Black, still needed to be thinned by 1/2.
Today I dug in all of the soybean rows affected, and found only rotten seed - no sprouting at all. That in itself is odd, because with older seed, I expect to see staggered germination over at least a 10-14 day period. That was the case for the 2012 rescue soybeans started in pots this year, some emerging as much as 3 weeks after the first sprouts... and when I dumped out the empty pots, there were still some living seeds which had not yet emerged. That there was no sign of life at all in the empty rows seems to indicate that the seed was completely destroyed after planting (probably by high soil temperatures).
One of the things which frustrates me is that two of the varieties (Hokkaido Black and Saint Ita) are not in the USDA soybean database, so I was looking forward to measuring & recording their characteristics. Both are also old & nearly dead, so I will attempt to plant Saint Ita again & hope for the best. The other two varieties, Sapporo Midori (which was bsupposed to be the main edamame crop) and Pando, have short DTM's; so provided that the second planting germinates, I should be able to get some seed. The weather has cooled into the upper 70's this week, so I'm cautiously optimistic.