Pollen drift

[wdlngtn]

There is one paper that found cannabis pollen and weather patterns indicate hemp pollen found in Spain may be blowing in from Morocco.

They do a good job finding supporting information, but It's a very singular study. There have not been any further studies on this pollen transportation, and the Africa connection is a little speculative considering there must also be local marijuana grown in Spain.

There isn't data on how much pollen detected in the air might effect cultivation of females.

[wdlngtn]

PollenDispersal_Small_et_all.pdf

[wdlngtn]

1996_note_36percentOfpollenInOmahaCannabis.pdf

[brymz]

What about the papers we found from Small?

[wdlngtn]

These papers together are much more convincing that cannabis pollen from Morrocco blows to Spain.

2013_paper_Morroco_PollenInAir.pdf

1997_paper_Pollen_FromMorroccotoSpain.pdf

[wdlngtn]

The small paper uses only 12 plants per square meter

[brymz]

Perfect.

[wdlngtn]

After a second pass through the small paper - I think it's useless except it helped me find this article that is the distance restrictions for Canadian hemp growers/breeders/germplasm maintainers.

From the context of the writing, I'm gathering that these restrictions are meant to protect breeders from outside pollen more than making unpollinated female crops for harvest. Either way, it seems like they like the standards because they've not changed in a decade. 5 km if the strictest distance.

2019_report_Canada_restrictionsforGrowingHemp.pdf