presentation love your mothers MCPIR René Corsten Delphy.pdf

presentation at MCPIR event of 13th of April 2023 (www.mcpir.nl)

1. The importanceof good
motherplantmanagement
“ “Love yourmothers”
René Corsten
[email protected]
[phone]

2. In Cannabis thediversity
is (still) high

3. Cannabis growing
facility
Indoor?
Greenhouse?
Open field?

4. HPS or LED?

5. Startingmaterial
Seeds?
Tissue culture?
Motherplants?

6. Motherplants!
The growingcycleof Cannabis canbeshort -8-9 weeks with
theright strategy. Andfora short growingcycleitis not
logicaltogo fortissue culture (toexpensive)
Uniformityof theplantsis important. Seedsare good, but not
uniform enough
Sotheansweris: go foryourmothers! –but ifyoudo so, you
have gottolove themsothequalityof thecuttingsandthe
rootingis super!

7. Whyyoumust produce
goodhealthycuttings
Ifthestart is notgoodyourchanges on a gold medalare low!

8. Whyyoumust produce
goodhealthycuttings
Ifthestart is notgoodyourchanges on a gold medalare low!
Ifyoufailin
making the
perfect cutting
youwillbekicked
out of the
business when
thetimesof
‘green gold’ are
over!

9. Uniform cutting
Sohowdo we make a vitaluniform cutting?
1
st
: start withseedanddo yourfenotyping
Oncethatis doneitallstarts!

10. Big motherplants
or a bed of motherplants

11. The samelength
thesameage

12. The samelength
thesameage

13. The samelength
thesameage
Pick yourcuttingsat least3 timesa week –(preferable6
timesa week)
Allof the samelength(5-6 cm), sameage(leavesunderneath
the pickedcuttingsimilar)
Pick yourcuttingsin thebeginningof theday–trytoavoid
pickingcuttingsat theend of theday
Store yourcuttingsfora whilesocallascanbeformed? →first
daysat 5-6 C., last day20 C.???

14. To produce rooted cuttings
that are all equal
You want unrooted cuttings that are visually
all the same, but also unrooted cuttings that
are all the same anatomically
From a balanced motherplant

15. A cuttingmust bevitale/
in goodcondition
Workwithelite motherstocksforpreserving genetics
Store yourgeneticsin tissue culture / Start onceevery2-3
yearswitha new freshmotherstockfromtissue culture
Light levels →600 μmol 18 hours. Assimilatebalance/RTR!
24-hour temperature25 –27 C.
Nutrients→Recipe–notthatdifferent fromregulargrowing–
avoidcuttingsgettingtowoody
Age of themotherplants–notlongerthen20-30 weeks
pickingcuttings?

16. Hygienecontrol
Usean overdose of benificialson yourmothers–theyare
worthit!
Whenpickingcuttingsavoidspreadingdiseases
→Sodisinfect yourknifebetweeneachplant/bed
→Aftera daypickingcuttingsreplacealltheknifesbyclean
knifes

17. Rooting
•EC 1 –1.5
•pH 5.5 –6,0 –Rockwoolnon-treated7.0
•Hygeniccuttings/ keep themwet
•A Cut in a 45 °C angle= more wound= more roots
•Biggerstem = betterrooting
•Don’tcut leaves
•Bottom-heating–25 -27 °C
•Day/nightperiod-18/6

18. Rooting
•Rootingpowder? –not(always) needed
•First week no evaporationforequalrooting
→UnderneathDome/plastic/humidifier
→1st 7 dayslight levels toa maximum of 100 μmol
→2nd week youcango up toa level of max 200 μmol
•After7-10 daystake awaythe plastic/lower
humidity
→Too late →The first onesare gettingtomuchin advance and
risk of fungii
→Too early→the late onescan’tkeep up.
→In bothcases: extra inequality

19. Futurecannabis cultivation:
Future goal: speed up the cycle!
•Max 14 days to make a vital rooted cutting
•In the growing cycle 30 - 40 plants per m2
•Max 5 days veg
•So no pinching – you want an uniform crop
Spend as little labour as possible on crop treatments
•No transplanting and moving with plants
•No removing of lower leaves
•No shoot selection
•No removing of any leaves at the top to give shoots more light
The choice of genetics (and development of new genetics) are important to be
successful in this strategy!

20. Futurecannabis cultivation:
Advantages when you compare this strategy to the current way
of growing cannabis:
1)Increase of production with 25-30%
2)A better product
3)A significant reduction of labour cost
4)Lower footprint
5)A more uniform product
6)Less risk on pest and diseases
7)………

21. Interactfullywiththe
horticulturalindustry
JoinMCPIR in
takingCannabis
Cultivationto
thenext level!!