flushed too early

cohokiller said:

Don't get emotional snowflake

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Dr. Who said:

LOL "Snowflake". Haven't heard that in years!

First pic = upper left - That plant is DONE (dying out) HARVEST it NOW!

Let me take the time to point out the start of your problem here.

First off, it was not the "flush" that started that problem out!
It's the really high P&K "bloom" nutrients that you started to use too early!

Rather classic case! Way too yellowed out, along with the necrotic patch's of brown drying spots lower - but rising with time.
The purple in the upper core of the leaves in the budding!

Next run. Don't add any bloom nutrient, till the 3rd week of bloom after you went to your bloom time!
At that 3rd week - Mix your veg and bloom 50/50 and use that for a week.
At week 4 - Now go 100% bloom.....NO stupid high P&K "boosters" like Beastie Blooms of Mother Of All Blooms - you know, any thing like an NPK of 0-52-35 !!!! Plant cookers!
IF, you simply HAVE to try that stuff,,,, ONCE at week 6 and put it away!

I think you may find the next run to be far better and you'll (and the plant) will have less stress that way too!

As far as these being "done".....You might squeak a week or so out of them yet but, I would just do my trimming starting asap on the most done one and go in progression to the one that looks the least done....

You have late bloom foxtailing going on. Looking at the plants with - they and the FT are telling you that their done!

Overall, for your FIRST run......Not bad!

Oh and yeah, skip the "flush"!

Now I too will say you should lighten up on the comebacks some. Don't take what the knuckleheads around here say personal.
We all like to kid around and I do it too!

Be seeing ya!

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cohokiller said:

Actually I didn't start adding any nutes at all until about the 3rd week of flowering. I was using FFOF soil and was seeing how long I could feed off of that soil before adding anything. I waited till I started seeing deficiencies then I only did 1/2 strength to 3/4 strength feeding of tiger bloom. This leaf yellowing didn't start up till I started flushing. The one you say is dying out, are you talking about the one without any fan leaves? Because I defoliated that one because it had spider mites. The buds and sugar leaves on it still look healthy though

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cohokiller said:

Don't get emotional snowflake

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Cyrus420 said:

Easy: You don't.

People flush because they believe they are ridding their plant of excess chemicals and that somehow this is going to make their smoke taste better.

Not only are you depriving the plants of nutrients at a critical point in it's life cycle but you're also wasting water, energy, and time.

The harsh taste of herb disappears during a proper dry and cure, making flushing utterly useless and if you take the time to read what wonderful information is available on the site you'll see it's mostly another stoner myth.

Of course now there is exceptions, like flushing with mountain dew or bacon injections...

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althor said:

That is not the reason all people flush.

I flush because it has been proven that the lower the nitrogen levels are in soil the higher the THC % is in the plant.
The higher the nitrogen levels are in soil the lower the THC % is in the plant.

Nitrogen is also the easiest nutrient to remove from soil by flushing.

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superbak3d said:

This is just stupid, and nothing has been proven. That's a load of shit.

Your soil shouldn't have N in it by the end of flower anyways. It should be depleted unless your stupid and still feeding N at the end of flower.

Flushing is based on stupidity, not science

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althor said:

Here is the conclusion from the experiment....

This phenomenon is favorable for agricultural production, because nitrogen fertilization will increase stem yield and simultaneously decrease THC content of the plant significantly.


Just to point out, I dont care either way what people do with their grows.
Just dont try to act like you know it all and have all the definitive information on a plant we have BARELY scratched the surface of..

Over the next 10 years I am sure we will learn more and more and more about the plant we love so much.

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KryptoBud said:

Cannasafe Analytics | Stress and Marijuana Potency

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althor said:

That is not the reason all people flush.

I flush because it has been proven that the lower the nitrogen levels are in soil the higher the THC % is in the plant.
The higher the nitrogen levels are in soil the lower the THC % is in the plant.

Nitrogen is also the easiest nutrient to remove from soil by flushing.

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Cyrus420 said:

You haven't shown a positive correlation between flushing and THC content only between nitrogen content and THC content.

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RM3 said:

Effect of nitrogen on tetrahydrocannabinol (THC) content in hemp (Cannabis sativa L.) leaves at different positions

I. Bócsa, P. Máthé, and L. Hangyel

GATE "Fleischmann R." Research Institute, Kompolt 3356, Hungary

Bócsa, I., P. Máthé, and L. Hangyel 1997. Effect of nitrogen on tetrahydrocannabinol (THC) content in hemp (Cannabis sativa L.) leaves at different positions. Journal of the International Hemp Association 4(2): 78 -79. The effect of different levels of nitrogen fertilizer, of physiological age of leaves and of the interaction between these factors on the Δ9-tetrahydrocannabinol (THC) content of leaves from different positions on the hemp (Cannabis sativa L.) plant were analyzed by gas liquid chromatography. High nitrogen levels reduced the THC content of leaves, and older leaves contained less THC than younger ones. There was no significant interaction between these two factors.

Introduction Hemp (Cannabis sativa L.) is a traditional and important raw material for the textile industry and is currently of interest as a wood fiber supplement in the paper industry (de Meijer and van der Werf 1994). A significant increase in cultivation of hemp in Europe is anticipated for future fiber production. Furthermore, drug-type Cannabis may play an important role in future therapeutics (Clarke and Pate 1994.). However, since one of its cannabinoid compounds is Δ9-tetrahydrocannabinol (THC), the psychoactive agent of the plant, its cultivation is presently limited. Breeders have developed low-THC and high-fiber content varieties, but some of these still contain a THC concentration verging on the EU limit for cultivation subsidy in Europe (de Meijer et al. 1992).
Since hemp has a high nitrogen (N) requirement, it is important to determine the relationship between N fertilization and THC content, and (for the purpose of analytical sampling) the interaction between N fertilizer and leaf position, in relation of leaf THC content.
Cannabinoid content of the leaves is known to decrease gradually from the top to the bottom of the plant (Hemphill et al. 1980). Nitrogen content in vegetative parts of the plant has been thought to correlate positively with its THC content (Coffman and Gentner 1975, Haney and Kutscheid 1973).


Table 1. Fertilizer treatments in mg/kg soil.

Table 2. The effect of nitrogen treatment on the fresh weight and plant height of hemp and on the N content of the phytomass.

Materials and methods The experiment was performed using 5.5 liter pots, with two plants of the variety ‘Kompolti Hibrid TC’ per pot. This high-fiber variety has a THC content (0.5-0.7%) exceeding the EU 0.3% subsidy limit. Pots were placed in a glasshouse under ambient environmental conditions. A chernozem brown forest soil from Kompolt was used (Krisztian and Hollo 1992). Treatments are shown in Table 1.
Chemicals used for the nutrient supply : anal. grade NH4NO3, KH2PO4, KCl. Doses were supplied as solutions. Date of sowing: 22 April. Date of harvesting: 13 August. The lowest N level treatment was considered as the control.
The number of replications was six. Plants were grown until the end of flowering for staminate plants. Leaf samples were collected on 13 August in the following way: every leaf of both the staminate and pistillate plants was collected, dried at 40°C for 24 hr, ground, weighed, homogenized, and stored in a refrigerator at 3°C for 90 days. Leaves were placed into three groups: (a) older leaves that occur along the middle part of stem, (b) leaves from the side branches, and (c) younger leaves that occur near the top of the stem.
THC was extracted from the dried leaves with petroleum ether for 3 hr at RT. (Hanus et al. 1981). Analyses were performed with a Hewlett-Packard 5890 series II gas liquid chromatograph. Parameters of analyses were: HP-1 capillary column, 0.3 ID x 25 m length; injector temperature 260°C ; split ratio 1:70; detector temperature 300oC. Analyses were programmed from 190 to 265°C at 15C/min with an 11 min and a 5 min internal plateau at 235°C and 260°C, respectively.
Initially, an analytically pure THC standard was not available, so areas of THC peaks were used for characterization of THC content. The peak identification of cannabidiol and THC was carried out according to Hanus et al. (1981). Subsequently, CBD and THC standards were obtained and the original data were verified with these standards. The back-calculation of the data to an absolute value is analytically incorrect in our opinion, so this determination was not made.
The statistical significance of factors presumably affecting the THC content of leaves was determined by analysis of variance. The first factor was (a.) the leaf position on the plant, and the second factor was (b.) the nitrogen treatment.


Table 3. Analysis of variance of N fertilizer experiment (in a randomly arranged bifactorial split-plot experiment with six replications).

Results There was a significant increase in fresh weight of shoot (80-130%) and plant height (28-39%) due to N supplimentation (Tab. 2). THC was highest in leaves near the shoot tip and on side branches, and lowest in oldest leaves (Fig. 1a). THC content of leaves of each plant part decreased in response to N fertilizer (Fig. 1b).
The decrease was significant in the case of the highest N dose (Fig. 1b). THC contents of leaves from various plant regions were significantly different, independent of the N level (Tab. 3, see: F-value of Factor "a") The other factor, N fertilizer treatment, also had a statistically significant effect on THC content of leaves (Tab. 3, F-value of Factor "b"). There was no interaction between the two factors (Tab. 3, F-value of Factor "a X b") in relation to leaf THC content.


Figure 1. Effect of examined factors on THC content of hemp leaves :
a.) THC content of leaves from different positions on the hemp plant (means of three levels of N fertilizer).
b.) Effect of N fertilization on the THC content of hemp leaves (means of three positions on the plant).

Discussion These experiments show that the THC content of leaves decreases with increasing N doses. This phenomenon is favorable for agricultural production, because nitrogen fertilization will increase stem yield and simultaneously decrease THC content of the plant significantly. Additional studies are necessary to determine optimal N dose/ha, time of application, fertilizer type and the lowest THC content achievable under field conditions.


References

• Clarke R. C. and D. W. Pate 1994. Medical marijuana. J. International Hemp Assoc. 1: 9-12.
• Coffmann C. B. and W. A. Gentner 1975. Cannabinoid profile and elemental uptake of Cannabis sativa L. as influenced by soil characteristics. Agron. J. 67 : 491-497.
• Haney A. and B. B. Kutscheid 1973. Quantitative variation in the chemical constituents of marihuana from stands of naturalized Cannabis sativa L. in east-central Illionis. Economic Botany 27: 193-203.
• Hanus L., K. Tesarik and Z. Krejci 1981. Capillary gas chromatography of natural substances from Cannabis sativa L. II. Comparison of male and female flowering tops . Acta Univ. Palack. Olomucensis 97: 157-165.
• Hemphill J. K., J. C. Turner and P. G. Mahlberg 1980 Cannabinoid content of individual plant organs from different geographical strains of Cannabis sativa L (Cannabinaceae). J. Nat. Prod. 43: 112-122.
• Krisztian J. and S. Holó 1992. Periodical phosphorus fertilization. Növénytermelés 41: 1-10.
• Meijer E. P. M. de and H. M. G. van der Werf 1994. Evaluation of current methods to estimate pulp yield of hemp . Ind. Crop and Prod. 2: 111-120.
• Meijer E. P. M. de, H. J. van der Kamp and F. A. van Eeuwijk 1992. Characterisation of Cannabis accessions with regard to cannabinoid content in relation to other plant characters. Euphytica 62: 187-200.

Acknowledgments The authors thank the National Research Fund of Hungary (OTKA), for financial support of this research, Prof. Paul G. Mahlberg (Indiana University, Bloomington, U.S.A) and Mr. László Pummer ("Fleischmann R." Institute, Hungary) for their help.

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Cyrus420 said:

If I'm reading this correctly basically the plants that were fed higher dosages of N had less THC, so a correlation between N and THC.

OP is discussing flushing and is flushing the N out of the system in the last week or two of the plants life really going to make that much of a difference if any at all?

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RM3 said:

Every one here knows I don't flush, I boil lol

that said the N vs THC is true, it's why Jack's Aquagold (only Jack's nute designed for MJ) is a 7-15-30

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cohokiller said:

I was hoping to get some amber trichs to get a more sleepy high but I think this will do. 75% cloudy and 3% amber. Think these will be OK to keep going another 5 or so days? Couldn't I just give a light dose of nutes to keep em going till I get amber but light enough to not fuck up the taste,They look sound dude,i think that they look done to me

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Cyrus420 said:

This post wasn't even in response to you.

Do you really boil your roots? Can you do quickly tell me about this I googled it and can't seem to find solid info on it.

Also I think the point still remains, I agree that there is a correlation between N and THC but is there one between flushing and THC? You could help end this debate by helping me draw this distinction you seem pretty knowledgeable.

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