Correlation between stem diameter and harvest

[johnehazeharvester]

I recently bought a caliper ruler and decided to measure some of the plants I have going. They range between 19.5 and 15.7 mm at the base of the stem. I assume this will have some correlation with overall harvest yield. I suspect the plants with the bigger stem will have a larger root volume. Does anyone pay attention to this?

 

[safeman]

Also check the "hollow" of the stalk (after harvest) a 50/50 is good ((50% hollow 50% full)

 

[cbdhemp808]

My perspective is that of an outdoor greenhouse grower, using organic living super soil. I think there's a bunch of factors going on. You could have a fat stalk, pot too small, and get a crappy harvest. But I think in general, a big stalk is a sign of vigorous growth (and genetics), often a big canopy, and lots of bud sites. Provided all factors in the grow are well taken care of (incl. big enough pot), that can lead to a great harvest.

 

[SmokingWings]

Does anyone pay attention to this?

I find the larger or thicker stalks interesting but as for really paying attention to the yield and harvest then nope.

In my case most of the plants with thick stalks are those I have used as a mother so they have been around for awhile.

But, no matter how the stem gets thick it is still fascinating to see them.

 

[Keffka]

I haven’t noticed a direct correlation. I have plants that have grown thin stems and yielded fat, and I’ve had plants grow fat stems that yielded poor. A fat stem is a good indicator of vigorous growth and ample room, but it has to be read in context with the rest of the grow. So basically like everything else grow related, the answer is “depends”

 

[Azimuth]

I find plants from seed generally have fatter stalks than those from clones and the plants are more robust but haven't noticed a difference in yield, though really haven't paid much attention.

 

[cbdhemp808]

I find plants from seed generally have fatter stalks than those from clones...

I've been having some cloning trouble lately. It seems some phenos are better cloners than others. I've got leaf spot mold hitting a couple newly-planted clones... a Seedsman White Widow and a CBG (?). Looks like the WW may not make it... sad, because my last one. I've also got a more established clone of HI-BISCUS planted in 10 gal, but she's getting hammered with leaf spot, and I may need to re-clone her. She also has a weak structure and lacks vigor.

 

[SmokingWings]

I find plants from seed generally have fatter stalks than those from clones and the plants are more robust ....

First thing that comes to mind is that the plants from seed will have a tap root.

 

[bluter]

I find plants from seed generally have fatter stalks than those from clones

your clone runs are probably getting flipped sooner than your seed runs. veg time has a direct effect on stalk thickness.

 

[Azimuth]

your clone runs are probably getting flipped sooner than your seed runs. veg time has a direct effect on stalk thickness.

Could be, but most of my stuff is from clones so when I do a seed run it really stands out. Lol.

 

[Keffka]

I keep reading the notification for this convo as stem diaper and it made me laugh so I had AI draw a picture for me, enjoy

 

[johnehazeharvester]

I find plants from seed generally have fatter stalks than those from clones and the plants are more robust but haven't noticed a difference in yield, though really haven't paid much attention.

So I will record all of these and see what my yield is, in my super scientific study of 7 plants. I have taken down four and in about 10 days will take down another three. so we will have to wait until dry and cure. Dry and cure only takes about 9 days, as I use a cannatrol. In a few weeks I will update this post

 

[johnehazeharvester]

Results

Cultivar	Stem diameter	Height	Yield	seeds
Skunk #1	14.2 mm	5' 12"	211 gm	16
Skunk #1	11.7 mm	4'8"	47 g
Durban poison	13.2 mm	4'6"	256 g	10
Super Lemon Haze	10.4 mm	3'	84 g	63
Black opal x zkittles	14.2 mm	2 ft 7"	62 g	41
CBD	15.5mm	3' 10	92 g	8
Pineapple Kush	12.1 mm	3 ft 6"	47 g	75

Seeds not included in the weight.
The Black Opal, CBD, Pineapple Kush, and small skunk were dried and cured first. i am pretty sure they were over dried. I suspect the weights of those should be 20-50% more. They were a good smoke but I felt they were a bit dry. I used a cannatrol for both runs but I added gummies to the dry and cure for these 4 plants after they were drying for a few days, I think somehow the added humidity of the gummies overdried these 4. I will never do that again. Note to self; Gummies go in alone. Conclusion: Poorly done study with inconclusive results.