Got some new interesting info!
Since I noticed the aphid infestation in my phalaris aquatica I've been researching for ways to control it and today I came upon this research paper on the subject that was an eye opener! I will attach the paper below.
Apparently aphid infestation significantly increases tryptamine concentration in aquatica laves!
What's more interesting is that silicon supplementation in the form of potassium, calcium or magnesium silicate significantly alters aquatica's alkaloid profile.
Quote " To examine the effects of Si addition on plant defence we
measured concentrations of three indole alkaloids in the
leaves of P. aquatica with known efects on insects; gramine,
tryptamine and 5-methoxytryptamine (5-m-tryptamine).
Aphid infestation reduced gramine concentrations by
80% and 55% on average for Si− and Si+ plants, respectively (Table 2; Fig. 4a). In contrast, there was a significantly interaction effect of Si addition and aphid infestation
on tryptamine concentration, such that aphid infestation
increased tryptamine levels by 91%, however, this was in
Si− plants only. Si treatment modified this
effect resulting in 64% lower tryptamine levels in Si+ compared to Si− plants in response to aphid infestation (Table 2:
Fig. 4b). Si addition significantly increased 5-m-tryptamine
by over 800% in control plants and by 142% in aphid infested
plants.
And me was thinking aphids are unwelcomed pest :lol:
So basically aphid infestation increases tryptamine concentration by up to 91% and reduces gramine concentration by 80%!! What more can we wish for:d
Furthermore Silicon fertilization without aphid infestation increases 5-methoxy-tryptamine by up to 800% just wow:shock:
In my previous post I mentioned aphids not bothered by aquaticas alkaloids while other insects have an aversion from the grass especially regrowth leaves.
Apparently this research paper have come to the same conclusion that aphids are not affected by tryptamines in aquatica although the parasitoids insect of aphids are significantly affected by the increase in tryptamines concentration when tryptamines.
I'm already searching for a supplier of silicon fertilizer.
Even if I couldn't get my hands in the silicon fertilizer. Aphid infestation in itself lowers gramine by up to 80% and increases tryptamine concentration by 91%.
Now wish I didn't kill so many of those aphids. These buggers were trying to hide from me inside the grass sheath. Whenever I disturb the blades they migrate to the base of the leaf and hide inside the sheath so there's more of them still. I'm never bothering them again :!: 8) the grass seems to be regrowing just fine all looking healthy and vibrant as can be seen in the pictures. That's only 6 days of regrowth at 20° maax at day and 15° to 8° at night.
While other plants are yellowing from the high nitrogen fertilizer the grass is growing like crazy! I even noticed some honeydew clear sticky droplets on the blades from the aphids. Some still these tiny sticky droplets attached to their buts :d ants go crazy when I disturb their sweet trophies. I can live with some blades wilting and dying off from these sugary fat buggers.
Let's see what this coming extraction will yeild after this aphid infestation
one more week to harvest the regrowth and I will be performing an extraction that will be Friday night.