Chloramine and Plants...... Questions?

[confuted]

You need a higher dose because the concentration of chloramine that cities put in water is higher than the concentration of chlorine. It makes sense. I didn't tell you that prime isn't better - prime contains chemicals to neutralize the ammonia and help fish slime coats - Wardley Chlor-out does not contain those additives. What I told you is that chlor-out works - it does what it says.

[ColeMan]

let me just say simply that yes, chloramines do inhibit plant growth; here are the results of one such study done with hydroponically grown lettuce:

The effects of the concentration of and exposure time to chloramine, the product of the reaction between hypochlorous acid and NH+4, on root browning and growth of lettuce (Lactuca sativa L.) cultured hydroponically were investigated.

Addition of hypochlorous acid in the form of sodium hypochlorite at 0.3 mg Cl/l to the nutrient solution containing 0.67 mM NH+4 significantly inhibited plant growth 10 days after the start of treatment.

Exposure to chloramine for even I h by the addition of hypochlorous acid at 0.5 mg Cl/I to the nutrient solution containing 0.67 mM NH4 also significantly inhibited plant growth.

Furthermore, in the nutrient solution containing NH+4 at more than x1/256 unit of Enshi standard, 5.2 x 10-3 mM, plant growth was significantly inhibited following the addition of 0.5 mg Cl/l hypochlorous acid. It was estimated that the critical chloramine amount at which lettuce plant growth was significantly inhibited was 0.18 mg Cl/g root FW.

Source:
Effects of chloramines concentration in nutrient solution and exposure time on plant growth in hydroponically cultured lettuce
TERABAYASHI Satoshi (1) ; KOBAYASHI Yasuhiro (1) ; FUJIME Yukihiro (1) ;

Scientia horticulturae
2005, vol. 103, no3, pp. 257-265 [9 page(s)

[over_stocked]

Originally Posted by vance71975

Inhibit Bacteria Growth. Looking for a little more of a fact based or Research based answer, i didn't ask if it would interfere with the Biological Filter. I want to know if its toxic to Plants.

Congrats. You've asked for an answer. Got it. And now you aren't happy with it. Again, see my avatar.

Originally Posted by confuted

He meant what he said when he said all growth. The water company doesn't want seaweed and algae growing in the pipes any more than they want e-coli and salmonella in them.

Yup. Sums it up.

[vance71975]

Originally Posted by ColeMan

let me just say simply that yes, chloramines do inhibit plant growth; here are the results of one such study done with hydroponically grown lettuce:

The effects of the concentration of and exposure time to chloramine, the product of the reaction between hypochlorous acid and NH+4, on root browning and growth of lettuce (Lactuca sativa L.) cultured hydroponically were investigated.

Addition of hypochlorous acid in the form of sodium hypochlorite at 0.3 mg Cl/l to the nutrient solution containing 0.67 mM NH+4 significantly inhibited plant growth 10 days after the start of treatment.

Exposure to chloramine for even I h by the addition of hypochlorous acid at 0.5 mg Cl/I to the nutrient solution containing 0.67 mM NH4 also significantly inhibited plant growth.

Furthermore, in the nutrient solution containing NH+4 at more than x1/256 unit of Enshi standard, 5.2 x 10-3 mM, plant growth was significantly inhibited following the addition of 0.5 mg Cl/l hypochlorous acid. It was estimated that the critical chloramine amount at which lettuce plant growth was significantly inhibited was 0.18 mg Cl/g root FW.

Source:
Effects of chloramines concentration in nutrient solution and exposure time on plant growth in hydroponically cultured lettuce
TERABAYASHI Satoshi (1) ; KOBAYASHI Yasuhiro (1) ; FUJIME Yukihiro (1) ;

Scientia horticulturae
2005, vol. 103, no3, pp. 257-265 [9 page(s)

Thank you ColeMan, For providing the answer i was looking for And facts to back it up!

[vance71975]

Originally Posted by over_stocked

Congrats. You've asked for an answer. Got it. And now you aren't happy with it. Again, see my avatar.

No i was told by the City water Treatment plant that it is added to Inhibit Bacteria Growth Only When i asked them about the effects on plants they said they didn't know, they dont use it to kill plants just Bacteria. Being given wrong or incomplete information is not ignorance, Nor is refusing to blindly taking your word for something.You gave no info to back up your statement, there for your statement was Opinion, and we all have one.Coleman however Provided a Solid answer With a Study to Back up what he Said.

[ColeMan]

that said, think about this: most people water terrestrial plants (including their lawns) with chloramine-laced water and I have yet to hear anyone complaining about impeded growth rates, etc. Though I wonder how the equation changes when one starts to ponder the effects in plants that live totally submersed, where chloramine levels are (closer to) constant than they would be terrestrially. I think it might be interesting to do a simple, simple experiment, in which one grows a plant in two tanks whose parameters were identical save one was treated for chloramine (it would be even better if the plants grown were both cuttings from the same mother plant)...

[vance71975]

Originally Posted by ColeMan

that said, think about this: most people water terrestrial plants (including their lawns) with chloramine-laced water and I have yet to hear anyone complaining about impeded growth rates, etc. Though I wonder how the equation changes when one starts to ponder the effects in plants that live totally submersed, where chloramine levels are (closer to) constant than they would be terrestrially. I think it might be interesting to do a simple, simple experiment, in which one grows a plant in two tanks whose parameters were identical save one was treated for chloramine (it would be even better if the plants grown were both cuttings from the same mother plant)...

Well the only info i could find online(guess i didn't us the right key words) was that plants that get most of their nutrients from roots are less effected by Chloramines than plants the take most of their nutrition through their leaves.Which would explain why my Sword hasn't died but most all my other plants did.
Agree that would be an interesting experiment!

[over_stocked]

Originally Posted by ColeMan

that said, think about this: most people water terrestrial plants (including their lawns) with chloramine-laced water and I have yet to hear anyone complaining about impeded growth rates, etc. Though I wonder how the equation changes when one starts to ponder the effects in plants that live totally submersed, where chloramine levels are (closer to) constant than they would be terrestrially. I think it might be interesting to do a simple, simple experiment, in which one grows a plant in two tanks whose parameters were identical save one was treated for chloramine (it would be even better if the plants grown were both cuttings from the same mother plant)...

In my orchid and jade plants chloramines have always slowed growth. I've been able to attribute lack of blooms to chloramine in many orchid plants.