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Here is an old article on BP. read the part about applying calcium

http://www.bigpumpkins.com/ViewArticle.asp?id=25

The next link is about calciums effect on cell division and before someone goes off the deepend I know this article was not done on pumpkins.

https://johnkempf.com/cell-division-for-fruit-size-and-quality/

Professor Wolf et al dissect this and give your thoughts both pro and con. Something to think about or disregard?

6/26/2024 7:42:10 PM

Eugene,OR

Some genetics are more prone to blossom end splits than others. Blossom ends are almost always thinner than the other parts of the pumpkin. As they grow and thicken up in the parts which are thicker than the thin blossom end, the blossom gets stretched…and if it gets stretched too far you end up with a blossom end split. Avoid genetics which have a tendency to have thin blossom ends & end up with splits. That is the best thing you can do. 95% of all blossom end splits are up & down ( not side to side). I think this is because the weight of the pumpkin is pulled downward by gravity & it rips the thin blossom end apart.

[Last edit: 06/26/24 9:30:48 PM]

6/26/2024 9:28:32 PM

Minnesota(dw447@fastmail.fm)

I think growers need to start breeding back the "snout" of the 1068 Wallace genetics.

6/27/2024 12:25:07 PM

Watlington, UK

Would be interesting to see the genetic line that causes splits. But it would take a lot of research, as most split pumpkins aren't recorded.

6/28/2024 1:53:26 PM