root growth does = stretch
& if there's "no way it directly related to root growth" you need to hit the books.
the cut grows only because the roots grow.
& what does training have to do with the biological process that is stretch?
nothing.
nitrogen actually promotes root growth & the plant seeks it out growing in the process.
you want me to prove it to you? np.
"Gabriel Krouk’s work focuses on nitrate, a major mineral ion and the main source of nitrogen for plants, present in soil but also often rare. As a result, plant roots grow constantly in search of new areas of nitrate-rich soil. Mr. Krouk’s research demonstrates that this root growth is in no way random: on the contrary it is carefully guided by molecular mechanisms that detect the presence and availability of nitrate in the soil.
Gabriel Krouk studied one of these molecular mechanisms using the model plant Arabidopsis thaliana. This specific detection mechanism involves the protein NRT1.1, which has the unique characteristic of being both a membrane transporter which enables the entry of nitrate in the root cells, and a nitrate sensor that can stimulate the growth of roots in areas where this ion is present.
This protein plays a unique role in transporting a plant growth hormone, auxin. When nitrate is abundant in the environment, NRT1.1 directs auxin transport so that the hormone accumulates in the roots, thus accelerating their growth."
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enjoy.
& the first 1 to 7 days of weeks 1 to 3 is ALL about stimulating root growth in the presence of high N fert... or what we'll call "grow nutes".
by your logic... my cuts should never stretch & the roots be underdeveloped. too funny.
doesn't homebrewer run grow nutes into week 4 or 5 with killer results?
e$ko does for the first few weeks.
& i do grow nutes to week 3. this last tray i did 50/50% bloom & grow & got much less stretch and after dissecting a container... root growth is less.
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reference :
Nitrate-Regulated Auxin Transport by NRT1.1 Defines a Mechanism for Nutrient Sensing in Plants. Gabriel Krouk, Benoît Lacombe, Agnieszka Bielach, Francine Perrine-Walker, Katerina Malinska, Emmanuelle Mounier, Klara Hoyerova, Pascal Tillard, Sarah Leon, Karin Ljung et al. Developmental Cell. 2010 June 15;18(6) pp. 927 – 937.