not to be an arse-hole , but do you have any research papers that talk about hemp pollen drift?
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Pollen hazard ⚠️
- Thread starter Mahalo85
- Start date
not to be an arse-hole , but do you have any research papers that talk about hemp pollen drift?
Mahalo85
Active member
Probably profit, by the size of this operation?
Mahalo85
Active member
The size of this particular field frightens me a bit, as I’m doing a small crossing/breeding project of my own right now. Maybe I should take it indoors to tackle these unwanted guests..
Captain Red Eye
Active member
Reasonable question.
I read an article a few years back about pollen drift going 30 miles from Morocco to Spain across the mediterranean sea. I imagine with an updraft and no obstacles, pollen could go miles.
I did a quick search and there seem to be lots of articles about hemp pollen drift. I'll need some time to read a couple before I can reach a conclusion though. Hopefully later this evening...gotta go feed the chickens now.
thanks for the reply
i was hoping there were a few Horticulture majors at the Rag who knew for sure
otherwise , it has been awhile since studying the topic of pollen drift , but last I recall there were a lot of opinions , from a few hundred feet to a few hundred miles
seems to me viability would be a good place to start…people go to great lengths to collect and store pollen and great care is taken so the pollen won’t go bad…
goingrey
Well-known member
I think CBD flower is just tiny part of overall hemp production. Seed (oil) has to be much more common. Can't make seed without pollen. Often they use hermie strains, they consider it a benefit because all plants make seed, but often also not and just regular male/female is used.
Old Piney
Well-known member
Absolutely if you are breeding. I do suggest you check out when the hemp males start flowering this could be key
Viability is moisture based, they've found 240M yr old pollen grain fossils....it's the inside that matters. Which
it absorbs water, germinates, and starts slowly growing a pollen tube
the reason pollen is given a lifespan of 72hrs in field is cuz of course due to moisture exposure...whether 80% humidity overnight, wet leaf, it's just not gonna make it long unless it lands on a sexy pistilate female...which has enough (cough)...moisture, to initiate germination. Yes, we really do say pollen germinates.
So if you can keep moisture off you extend lifespan yes. 3yrs is the record I've seen in all my time trying to remember posts about stored pollen. We're talking very very tiny fragile organic matter. The size alone means any degradation is a killswitch, only matter of time.
Elrond
Active member
I came by a hemp field yesterday (Germany). There were males and females. I didn’t see hermies, but I didn’t look out for them. They were already flowering, which I found strangely early. So maybe for seed production they breed auto traits into the hemp strain. Or is hemp always auto?
goingrey
Well-known member
Most hemp strains are not auto. The only one that is that I can think of is Finola. Some of them are just very early despite not being auto.
There are almost 100 hemp strains currently approved in the EU. Some are monoecious (hermie), others are diecious (male/female).
This site has some good info on some of them:
Home - HEMP IT
HEMP-it est une société coopérative agricole de production et de commercialisation de semences de chanvre à destination des marchés industriels et bio-sourcés.
www.hemp-it.coop
Some more info about hemp cultivation in EU:
Hemp
An overview of hemp production in the EU, its different industrial uses, applicable legal rules and support available under the CAP
agriculture.ec.europa.eu
CBD production is just a sidenote, and as an extract not flower. But in America things are different I suppose because growing hemp was banned for so long so less of an existing market for industrial uses, and also heavy demand for CBD because it is used to make the delta8 products and so on.
Mahalo85
Active member
That’s really early indeed
Mahalo85
Active member
Fingers crossed
I’ve set my mind on a greenhouse by now.. Have great weekend Old Piney
Janborrego
Well-known member
If there are makes sure can if only fems and no hermies you may be ok. I know pollen can travel up to 5 mikes in strong winds.Fellow growers, as I did a small hike with the missus after dinner last week I’ve stumbled upon a ten by ten square miles hempfield about 3 miles from our home. This is a commercial hemp field from Hempflax [Sensi seeds], and I was wondering if the pollen from these fields could screw up my little [10 plants] yearly backyard growing operation? Any recommendations, tips, tricks or should I just give up straight away..
Janborrego
Well-known member
Yes lightly seeded weed is just fine. My sour vengeance threw a nanner cause it has seeds but not a ton. Just a few and the weed is great. My best stuff yet. I roll like a half ounce at a time so I can send some to my son. He is very busy so I like to have it ready for him. I send it in the tubes to keep it fresh. He work like 12 hours a day 6 days a week.
Mahalo85
Active member
Nightmare it is, hempfarms popping up like crazy overhere in Holland these days
awesome paper there Amigo!…..in conclusion , it looks like more research is needed lol
if one is on the leeward side of the wind , not much chance of pollination ..doh ..compared to windward side..lol..
but yeah , my neighbor got into the cbd craze about 8 years ago and got a contract to grow about 500 acres of cbd plants
pretty sure he said they were all feminized and his land is about 20 miles away , I never worried about any pollen
after growing outdoors the last 17 years , I can say every crop had a few plants that had seeds , not very many , but there they were…..
Among plants that achieve cross-pollination via an abiotic vector, those with water-borne pollen are unlikely to rely on recirculatory collection through complex vortices (Ackerman 1997), because, all else being equal, flow in water is less turbulent than that in air (Ackerman 2000). For species whose pollen vector is the wind, our study joins others (Cresswell et al.2004, 2007) to demonstrate that recirculatory collection has a minor role in wind pollination in a disparate range of large receptors (ovulate cone, grass inflorescence, zoophilous flower). Overall, we propose that the functional significance of the attributes of wind-pollinated plants is to be understood primarily by reference to their shared principal mode of pollen receipt, which is impact collection. The differential performance that is likely to arise among plants with dissimilarly sized receptors now becomes a significant focus for future research.
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