So yesterday i was finally able to get some petrolim and therefore made some High-Octane Cultivators.
So i used it for my farms. I currently produce Kranuts, Rice, waxy earthyams, combustine particels and kindling particles. I used the High-Octane Cultivator on every Crop and then went to Alcyon to farm some curroption for the combastion-particle farm.
When i came back i noticed that some of the already planted combustion-particles suddenly where violett again instead of this pink when they were fertilized.
At first i thought maybe i missed them but then went through the rest of my farm and every field i used the cultivator on lost about 10-20% of the fertilized boon and returned to being normal crops.
Now i havent found any information that this is intendend 
maybe i am wrong but i thought i report this here at least.
Heres a screenshot i took from my rice-fields:
From my understanding there is a chance that the fertilizers will have to be reapplied every so often kind of like how there is a chance that a crop wont “tick” to the next maturation stage.
Pretty sure this is intended and it promotes having to “tend” your fields so to speak.
This is also one of the reasons that I feel that the fertilizers are not worth using along with the fact that it just speeds things up a little bit.
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Well if its intended than i would like to have something like “can sometimes be not effective” in the describtion or something similar.
I dont have a problem with it ticking out and its not so hard to make the cultivators as soon as you get your hands on some petrolim.
it´s just a tiny bit annoying.
I wholeheartedly agree there should be some kind of line in the description that says something like “not always effective” or some such.
Also agree that it is quite annoying.
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To my understanding (I could be totally off base, not a huge farmer by any degree) the time decreasing on fertilizer use happened at the time of application, and if it fell off it was just a second opportunity to hit it with more fertilizer?
You definitely get less an effect if you use it on halfgrown crops, but for something like kranut or combustion plants with the 2d grow times, multiple uses shorten it (seemingly?) dramatically. Also been useful for pushing exotic earthyams along for seed duplication since circa has been constantly picked clean.
Isn’t this more like “gets used up”?
the idea is that with every growth tick there is a chance for fertilizer to stop working, or as @Nightstar said, it gets used up
its intended behavior and doesn’t mean that initial fertilizer spray doesn’t work - it always works for at least the first tick (when it has the first chance to be consumed/used up/exhausted/expired or whatever you want to call it, meaning it might already be gone for the second tick)
with a bit of luck, your fertilizer can work on a sprayed block until the crop is fully grown (so you will see blocks in your farm that don’t need re-spraying at all)
I heard about this before trying it and it’s actually awful. It is easily the most tedious task I have come across so far. I also have seen plants lose their fertilizer without getting a single tick. Overnight I would say at least a third of my crop (kindling shred) was no longer fertilized, with growth ranging from zero to two plants that reached full maturity. Most plants were less than half grown. It’s too erratic. I would love to spray my crop and see things come up more evenly.
They most likely ticked, but didn’t grow.
I wonder if it could be changed so that fertiliser is guaranteed to last until at least one actual growth stage occurs.
james
10
Fertiliser is already guaranteed to last at least one growth stage.
Sorry I was mistaken - see below.
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Ah ok cool. I obviously wasn’t sure on that 
Ok thanks James for the info. Then my question is answered!
james
13
I’ve been corrected. The fertilised state can be lost per tick (which is once per game day).
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Isn’t one tick a growth stage tho? I don’t farm so forgive my lack of knowledge
My understanding is that a crop that is growing will tick during the global tick event for crops, and during this tick event, there is a chance that the crop will either grow or not.
From the explanation then, what I understand is that during the tick event the crop may not grow, but because the fertiliser state can be lost after the tick, the end result looks like the crop not having grown and having lost its fertiliser state.
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One tick is one check on whether a crop grows or not.
Every in-game day has one tick for all crops. It’s like a dice roll for a chance to grow.
That also means one tick doesn’t equal growth. It only means a chance to grow.
Fertiliser has a chance to be spent with each tick. That means it can be gone before growing happens.
Hey! Question! Where do I craft the high octagon cultivator? I have the Mulch recipe but not the high octane one.
Ok, I didn’t think there was a difference, thanks for clearing that up. Still, one game day to potentially lose the fertilizer is harsh. Aside from getting maybe 1/100 plants to shoot up overnight, I don’t see a significant difference between the plants I fertilize and the one’s I don’t.
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So I just planted and fertilized all my combustion plants on Gyosha. Went to Alder and came back 5 mins later(if that). At least 10 plants lost there fertilizer.
Another question do seeds sometimes die?
I feel like sometimes I come back and some plants are gone.
Anyone else notice this?
I have now grown tens of thousands++ of crops now and I have not had a single plant dissapear or die on me.
From my experience on farming games in the past, I’d assumed it would be a possibility, but I can’t say for sure! Doesn’t look that way to me, thankfully. 
(Maybe it’s the Reaper’s curse…
)
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