Global Daylight & Climate Chart - "Sweet Spots" and Landrace Origins

[SpaceJunkOG]

Recently I embarked on a little personal project and gathered some data from Weather Underground's historical data site, to make myself a chart of the day-lengths and climates in the originating regions of strains i was growing, or planned to grow. When growing landraces, I hoped to tailor my artificial indoor environment to the environment where the strains were from - and when growing hybrids, maybe even be able to bring out certain phenotype expressions by emulating the environment of one of the genetic origins of the hybrid. (this is similar to DJ Short's "bringing out the sativa" theory and coincides with some of his tips on light cycles)

This is a chart of 6 major "sweet spot" countries of cannabis, all with varying latitudes, displaying the varying hours of daylight, temperatures, and RH for a sample 7-month growing period.

This project was initially just intended for my own use, it's a little crude and far from complete, and would certainly benefit from having *every* month of the year documented, as well as other variables in climate like rainfall and wind, or possibly cities that were closer to the known growing regions in these countries. If anybody finds this useful, feel free to expand on it, or I will try and do some expanding myself. This is just a Beta version for now. (My source / method is explained on the top of the chart).

Anyway let me know if you guys find this useful at all or if you would even use it. I'm currently using the stats on Durban, SA to tailor my light cycle to a Mozambiquen landrace strain, and I plan to try and use the Oaxacan and Thai stats to "bring out the sativa" in my Trainwreck as a lil experiment.

Hope this is useful to somebody!

 

[SpaceJunkOG]

fyi - looks like you need to click in the MAIN section of the large image (*dont* click the top yellow bar that says "click here") - that will take you to the photobucket image where you can zoom in and see everything clearly / no fuzziness of the image. at least it's being weird like that for me, . . . . clicking the yellow bar enlarges it but it's still fuzzy / not full size

 

[Koondense]

Great job SpaceJunkOG!
I always thought the indoor lightning schedules should be more 'natural', not just a flip from 18/6 to 12/12.

Just had a geeky idea...Some diagrams with light curves would help and maybe with more sampling(daily variations, data from somewhere) one could use the data and program the growroom lightning to constantly simulate the local environment. I'm also thinking about humidity levels during the day and so on...but that's another step further
Daydreaming again.

 

[Cannabisso]

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[Genghis Kush]

nice chart spacejunkog

I think the Mozambique strain would be more likely from the north of the country that borders Malawi. The southern part isn't really known for its weed. But who knows could be from anywhere.

Personally, I think all the SOA stuff was most likely collected in South Africa and Swaziland and labeled for marketing. It would be easier and cheaper to collect seeds that way than traveling all over Africa. Since, there is zero information out there about this company, we can only guess.

thanks again for sharing the chart

 

[SpaceJunkOG]

thanks for the responses guys. if more people find it potentially useful I'll def try and expand on it.

Genghis - i think you're right, i thought the same thing last night, for the Mozambica i decided to tailor the light cycle to Malawi's day-lengths, not South Africa, figure that's probably much closer to the source. they're 14deg South instead of 30, so it's a pretty big difference, much less fluctuation in day length.

 

[SpaceJunkOG]

I'm also thinking about humidity levels during the day and so on...but that's another step further
Daydreaming again.

that was one of the interesting "eye-openers" for me when making this chart, was the extremely high level of humidity in most of these regions (minus Afghanistan, basically). Much of them averaging in the mid 60's - 70's, and peaking at 90 or 100 during the day, every day. This is so much more humidity than we have in my area, and that I have in my grow room! Still trying to find a way to emulate this with humidifiers / dehumidifiers without causing funguses.

 

[BoldAsLove]

that was one of the interesting "eye-openers" for me when making this chart, was the extremely high level of humidity in most of these regions (minus Afghanistan, basically). Much of them averaging in the mid 60's - 70's, and peaking at 90 or 100 during the day, every day. This is so much more humidity than we have in my area, and that I have in my grow room! Still trying to find a way to emulate this with humidifiers / dehumidifiers without causing funguses.

I tend to think the same way as you do when it comes to growing indoors

LEDs are nice for this purpose. They don't irradiate much heat so it's easier to dial in the temp/humidity/vpd curve.

I also don't run a circulation fan in the grow area until late flower, and even then it's a weak 4" one (for a 10 sq ft area). Of course there's an exhaust blower running 24/7 through the whole grow. Water everyday if you don't already. Make sure you're filling the floor of your room with as much soil as possible. You could also use fabric pots (they soak up and then evaporate water).

For fungus, mold, etc., you're already running resistant plants for the most part. For preventative measures, I'd suggest
1. start a worm bin if you haven't already, and make ACT from that
or
2. get some EM-1 or EM-5 and learn to make some activated batches of it

If you keep the soil microbes happy, they'll keep your plants happy. I wouldn't bother with bagged EWC for the teas though. Nothing beats or even compares to homemade compost/EWC.

I'll be watching! Good luck