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original sour diesel Nitro deficiency? PH lockout?

leon420

By leon420,
in Weed Infirmary

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ShaggyGrower
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ShaggyGrower

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ph of 6.9 might be a little high for cannabis.  Here's a link to charts showing which minerals are absorbed at which ph's:

https://www.420magazine.com/forums/indoor-soil-cultivation/114733-ph-nutrient-uptake-charts.html

 

I'd be tempted to do a flush with very low ec/ppm water(run off rain water, etc) with ph'd 5.8-6.0 water and flush until the run off is ~6.0.

 

What is in your growing medium (I found that some mediums hold alkalinity and ph is very hard to get down) @leon420? 

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slimjim
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slimjim

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Hi

It appears to be in DWC, if this is the case your water should be ph 5.5-6.0 in veg

growth, this appears to be root problem, check for brown and smelly roots.

Make sure of an air gap between water and bottom of net pot and if using

rockwool as medium make the air gap larger, keep temps below 20c.

hope this helps

PEACE

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Purpose of Strain Hunters

Our planet is home to millions of species of animal and plants with their own habitat, and each plays a unique role in the perfect design of nature. Unfortunately many species of plants and animals are victim of uncontrolled human development. The sole intent of Strain Hunters is to identify, locate and retrieve cannabis landraces that have not yet been studied, in order to give scientists and doctors the possibility to further enhance knowledge of the cannabis plant in the medicinal field.


Preservation of Landraces

Cannabis, one of the most ancient plants known to man, used in every civilisation all over the world for medicinal and recreational purposes, is facing a very real threat of extinction. One day these plants could be helpful in developing better medications for the sick and the suffering. We feel it is our duty to preserve as many cannabis landraces in our genetic database, and by breeding them into other well-studied medicinal strains for the sole purpose of scientific research.

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One of the goals of the United Nations, published years ago in official reports, was to wipe out the cannabis plant from the face of the earth by the year 2010. In reality this is far from being achieved, because man keeps using the cannabis plant for religious, medicinal and recreational purposes no matter what the law says. Most cultures cannot comprehend how a plant can be made illegal. In most people’s perception, plants and animals stand above a status of legality or illegality, they just exist in a higher design of nature that goes beyond human laws and regulations.

Nevertheless most governments of cannabis- producing countries are implementing drastic measures to destroy crops. Dangerous chemicals are sprayed over fields and over the farmers themselves in most of the third world countries, and the poorest people of the planet are the ones paying the highest price for cultivating a plant that does not kill. But in the economy of scale, where demand dictates supply, the poorest people of the planet have no choice but to cultivate cannabis as a cash crop to feed their children and send them to school. Communities that are isolated in remote areas in the poorest regions of the planet are often the keepers of very special landraces. 

 

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