Dutch pilot experiment: LEGALLY growing organic female hemp flowers high in CBD - Page 42 - Hemp - International Cannagraphic Magazine Forums

oldchuck · 08-01-2015, 02:24 AM

Clay and wet ground kind of go together, OO. We've had a lot of rain this season too.

The F2s are doing fine. I have five females maturing seeds. I hope the father was the six foot male I just chopped a couple of days ago. The girls are all different, tall, short, bushy, thin, quite interesting.

karl.uk · 08-03-2015, 09:29 AM

Dutch,
Any further news on your extraction techniques ?

Santalum · 08-06-2015, 12:18 AM

The best ameliorant for heavy clays which drain poorly is gypsum. Calcium opens soils up to facilitate better drainage. Even if your topsoil clay is non responsive to this treatment, the subsoil clays usually are. You want to be shooting at 4-6t/ha (or 1.6-4t/acre) as a basal rate. Most clays are calcium deficient even if lime has been applied as it takes significant time for lime to solubilise in a high pH environment.

oldchuck · 08-06-2015, 03:52 AM

Gypsum is more soluble than lime? How does calcium make for better drainage? How you doin', Sant? I keep planting seeds. Finola matures in 90 days. I still got time.

Santalum · 08-07-2015, 05:46 PM

All good OC. Well not really but we keep smilin anyway.

Lime really needs H+ ions to pull the Ca2+ cation into solution. Clays are typically not acidic so you can add lime but it won't solubilise. Calcium will displace magnesium which is usually in abundance in clay and it has a large hydration sphere in effect 'opening' up the soil profile. Clays deficient in calcium are generally poor draining. Gypsum will release the calcium cation regardless of high pH. Also gives you loads of plant available sulphur. We've been renovating our clay soils with gypsum for the last 5 years with good success albeit growing grain crops.

Hemp may love clay but it doesn't like wet, so you better have your clay well fertilised with Calcium.

Only Ornamental · 08-08-2015, 12:16 AM

Quote:

Originally Posted by oldchuck

Gypsum is more soluble than lime?

Yes

You may find the following links helpful:
1
2

oldchuck · 08-08-2015, 06:16 AM

Okay, guys, I think I am getting the chemistry, at least vaguely. I read in that IPNI pamphlet:

"Where gypsum is used in the remediation of high Na soils, it generally results in the enhancement of soil physical properties – such as reducing bulk density, increasing permeability and water infiltration, and decreasing soil crusting. In most conditions, adding gypsum by itself will not loosen compacted or heavy clay soils."

My dirt is heavy and wet, not solid clay. There's some sand and organic forest debris. I saved a stem and root from one of last year's tiny Finola plants. The tap root extends down about an inch and then hangs a 90 degree angle for most of it's 4 or 5 inch length. It couldn't penetrate any deeper so tried to grow sideways. Gypsum seems to help with the chemistry but it is not going to solve my hard ground problem. I'm thinking add wood chips which I can produce in abundance but wood chips will suck N.

Congratulations, Sant on getting to 50 posts. You are now a member of the elite.

mexcurandero420 · 08-08-2015, 08:33 AM

Gypsum is great to improve your clay soil, but lava dust would be better because of the minerales and trace elements, which could give your harvest a boost.

Keep on growing

DutchHempCBD · 08-10-2015, 12:32 PM

Hi All,

We finally processed the dried harvest of last year by using a combine to strip the leaves and flowers from the stem. Though this worked we noticed an obvious loss in trichomes. The leaves and flowers we processed using a 2 mm rotary sieve followed up by a 250 micron sieve. Though this technique worked, as in we produced some 'hemp hash' like material we have a very poor understanding of how much we actually gained and or lost from this processing method and how much it would cost if you would scale it up. Ahh well, the focus now is on our new crop, and to see if we can process this crop while it's still fresh to avoid trichome loss.

@Karl.Uk ->
- Did you manage to cull the males?
- How are you planning to harvest and proces your plants into an actual extract/concentrate?
- Can you also post some pictures of your field?

karl.uk · 08-11-2015, 11:50 AM

No we didnt manage to cull all the males !!
We are also looking at producing feminised Finola seeds for next year ( indoor grow) to eleviate the above problem with the males.
Harvest will be done with a cutter on the tractor, all green materials stripped from the plant, some will be juiced and frozen immediatly, the other will be dried, and oil produced (alcohol extraction technique)
Pictures to follow..

08-01-2015, 02:24 AM	#411
oldchuck Senior Member Join Date: Sep 2010 Posts: 1,111	Clay and wet ground kind of go together, OO. We've had a lot of rain this season too. The F2s are doing fine. I have five females maturing seeds. I hope the father was the six foot male I just chopped a couple of days ago. The girls are all different, tall, short, bushy, thin, quite interesting.
	Quote

08-03-2015, 09:29 AM	#412
karl.uk Newbie Join Date: Jul 2014 Location: Central UK Posts: 46	Dutch, Any further news on your extraction techniques ?
	Quote

08-06-2015, 12:18 AM	#413
Santalum Member Join Date: Jan 2015 Posts: 50	The best ameliorant for heavy clays which drain poorly is gypsum. Calcium opens soils up to facilitate better drainage. Even if your topsoil clay is non responsive to this treatment, the subsoil clays usually are. You want to be shooting at 4-6t/ha (or 1.6-4t/acre) as a basal rate. Most clays are calcium deficient even if lime has been applied as it takes significant time for lime to solubilise in a high pH environment.
	Quote

08-06-2015, 03:52 AM	#414
oldchuck Senior Member Join Date: Sep 2010 Posts: 1,111	Gypsum is more soluble than lime? How does calcium make for better drainage? How you doin', Sant? I keep planting seeds. Finola matures in 90 days. I still got time.
	Quote

08-07-2015, 05:46 PM	#415
Santalum Member Join Date: Jan 2015 Posts: 50	All good OC. Well not really but we keep smilin anyway. Lime really needs H+ ions to pull the Ca2+ cation into solution. Clays are typically not acidic so you can add lime but it won't solubilise. Calcium will displace magnesium which is usually in abundance in clay and it has a large hydration sphere in effect 'opening' up the soil profile. Clays deficient in calcium are generally poor draining. Gypsum will release the calcium cation regardless of high pH. Also gives you loads of plant available sulphur. We've been renovating our clay soils with gypsum for the last 5 years with good success albeit growing grain crops. Hemp may love clay but it doesn't like wet, so you better have your clay well fertilised with Calcium.
	Quote

08-08-2015, 06:16 AM	#417
oldchuck Senior Member Join Date: Sep 2010 Posts: 1,111	Okay, guys, I think I am getting the chemistry, at least vaguely. I read in that IPNI pamphlet: "Where gypsum is used in the remediation of high Na soils, it generally results in the enhancement of soil physical properties – such as reducing bulk density, increasing permeability and water infiltration, and decreasing soil crusting. In most conditions, adding gypsum by itself will not loosen compacted or heavy clay soils." My dirt is heavy and wet, not solid clay. There's some sand and organic forest debris. I saved a stem and root from one of last year's tiny Finola plants. The tap root extends down about an inch and then hangs a 90 degree angle for most of it's 4 or 5 inch length. It couldn't penetrate any deeper so tried to grow sideways. Gypsum seems to help with the chemistry but it is not going to solve my hard ground problem. I'm thinking add wood chips which I can produce in abundance but wood chips will suck N. Congratulations, Sant on getting to 50 posts. You are now a member of the elite.
	Quote

08-10-2015, 12:32 PM	#419
DutchHempCBD Member Join Date: Mar 2014 Location: Netherlands Posts: 103	Hi All, We finally processed the dried harvest of last year by using a combine to strip the leaves and flowers from the stem. Though this worked we noticed an obvious loss in trichomes. The leaves and flowers we processed using a 2 mm rotary sieve followed up by a 250 micron sieve. Though this technique worked, as in we produced some 'hemp hash' like material we have a very poor understanding of how much we actually gained and or lost from this processing method and how much it would cost if you would scale it up. Ahh well, the focus now is on our new crop, and to see if we can process this crop while it's still fresh to avoid trichome loss. @Karl.Uk -> - Did you manage to cull the males? - How are you planning to harvest and proces your plants into an actual extract/concentrate? - Can you also post some pictures of your field?
	Quote

08-11-2015, 11:50 AM	#420
karl.uk Newbie Join Date: Jul 2014 Location: Central UK Posts: 46	No we didnt manage to cull all the males !! We are also looking at producing feminised Finola seeds for next year ( indoor grow) to eleviate the above problem with the males. Harvest will be done with a cutter on the tractor, all green materials stripped from the plant, some will be juiced and frozen immediatly, the other will be dried, and oil produced (alcohol extraction technique) Pictures to follow..
	Quote