[paka]

Between 65 and 68 degrees Fahrenheit this is where the water holds the most oxygen and nutrients are or easily taken up by the roots.Going off memory from a Chad Westport video.

[jmystro]

65-68F is the ideal temperature range like paka mentioned. Soil temp can drastically affect microbe populations.

https://pubmed.ncbi.nlm.nih.gov/16329892/

pubmed.ncbi.nlm.nih.gov

Comparison of temperature effects on soil respiration and bacterial and fungal growth rates - PubMed

Temperature is an important factor regulating microbial activity and shaping the soil microbial community. Little is known, however, on how temperature affects the most important groups of the soil microorganisms, the bacteria and the fungi, in situ. We have therefore … Continue reading

[herb_hermit]

So what are the benefits of say something like new millennium winter frost? Plants reacting and protecting themselves against cold right? Creating new terpenes in the plant? Unless I’m completely misunderstanding, but couldn’t you lower your water temps the last 5 days of flower and have the same affect?

[jmystro]

Winter Frost has nothing to do with triggering any cold response. Winter Frost aids in senescence so it must have ingredients involved in the biosynthesis of ethylene. You’re not bottling ethylene gas so if I was going to formulate a product like Winter Frost it would have some ethylene precursors like Ethephon and ACC.

Ethephon – https://en.m.wikipedia.org/wiki/Ethephon

ACC – https://en.m.wikipedia.org/wiki/1-Aminocyclopropane-1-carboxylic_acid

Ethylene Role in Plant Growth, Development and Senescence: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378820/

[herb_hermit]

Okay thank you, I just got kind of confused when jerin explained it as making it act like it’s going to frost and creating an “oil sweater” to protect itself…

[jmystro]

In nature when winter is soon to come, plants produce and release ethylene gas as a chemical signal to other plants near by to hurry up and finish. It’s one way they communicate. Short of gassing our room at the end, New mill made a product that promotes the synthesis of ethylene. There are many enzymes, hormones, proteins and amino acids that build secondary metabolites (like seed production and the oils in a trichome) that could also be in Winter Frost. All those building blocks work together in very complex ways to promote or inhibit growth. This is why using the wrong product at the wrong time can be so detrimental to getting to harvest.