mr. green thumb 01
New Member
snow storm says on the bottle to use 24-48 hrs before you change your nutes to avoid the bacteria growth in dwc. Maybe its the same with purple maxx.
New nutrients! help! purple max, hardener, moab
- Thread starter Rj2120
- Start date
Here's the Low down on Gravity...
PACLOBUTRAZOL
Paclobutrazol (CASRN 76738-62-0) is classed as a herbicide/pesticide PGR. Paclobutrazol is an S5 poison. Its use is prohibited in many EU countries. The WHO lists Paclobutrazol as Moderately Hazardous, while the US EPA lists it as not classifiable as to human carcinogenicity with:
PACLOBUTRAZOL
Paclobutrazol (CASRN 76738-62-0) is classed as a herbicide/pesticide PGR. Paclobutrazol is an S5 poison. Its use is prohibited in many EU countries. The WHO lists Paclobutrazol as Moderately Hazardous, while the US EPA lists it as not classifiable as to human carcinogenicity with:
Substance Name Paclobutrazol
This substance/agent has not undergone a complete evaluation and determination under US EPA's IRIS program for evidence of human carcinogenic potential.
http://www.epa.gov/iris/subst/0182.htm
[End Quote]
Paclobutrazol is a triazole type plant growth retardant which blocks gibberellin biosynthesis and are involved in reducing abscisic acid, ethylene and indole-3-acetic acid while increasing cytokinin levels. It promotes fruit set in the states of inhibited development. It is also known that it protect plants against abiotic stresses.
In plain English (laymans terms) this means Paclobutrazol is a systemic growth regulator that reduces internode lengths of new shoots and causes earlier formation of terminal buds. It is used primarily as a plant growth regulator for turf grass, grapevines, trees (non fruit variety), and apple, stone fruit and mango trees. Paclobutrazol has reasonably long withholding periods (dependent on application rates and crop type). In some cases, control of growth may persist for more than one year. Typically, however, withholding periods are listed with registered Paclobutrazol products at between 20 and 40 days.
Paclobutrazol has been shown to be an environmental contaminant (Kathrin Reintjes et al 2006). In field situations, paclobutrazol is shown to have a half-life ranging from 3 to12 months (Lever 1986) or 12 to 18 months, although some have reported persistence as long as 3 years (Jacyna and Dodds, 1995). Some commercial greenhouse operations have had issues dealing with chemical residues.1
The persistence of Paclobutrazol in soil may result in contamination of nearby water bodies, thus presenting a possible hazard to human and animal health, and could also influence soil microbial activity with further effects on biodiversity.2
The hazards (if any) of using Paclobutrazol on a short-term deciduous crop that is consumed via combustion (i.e cannabis) are completely unknown.
- Jessica Lynn Boldt (200
WHOLE PLANT RESPONSE OF CHRYSANTHEMUM TO PACLOBUTRAZOL, CHLORMEQUAT CHLORIDE, AND (S)-ABSCISIC ACID AS A FUNCTION OF EXPOSURE TIME USING A SPLIT-ROOT SYSTEM
- Sybille Neidhart, Anuwat Jaradrattanapaiboon, Kathrin Reintjes,Berit Jöns, Martin Leitenberger, Joachim Ingwersen, Gunnar Kahl, Pittaya Sruamsiri, Thilo Streck, and Reinhold Carl (2006) Which risks do result from the application of paclobutrazol in off-season mango production regarding residues in fruit and soil? First results of a long-term field study in northern Thailand
I'm kind of on the fence about using Gravity. It is a PGR, however I don't think it's as dire as using products that contain DAMINOZIDE (ALAR)
Seems that all flower hardeners contain a PGR.
Hope everyone finds this info useful!
BTW...I start w/MOAB on week 6 w/no bad effects. 1ml a gallon. I use H&G at 300ml each (A&B) in a 40gal res..
I use the above nutrients on a great many w/no i'll effects.