Well I wired them this Spring, heard the on in potting mix crack a bit as I was bending, Thought I might lose the top, but it is fine! In fact it has thrived... I think Harunobu is right, the extra drain holes really kicked this guy into high gear! It is the only one I took a pic of so far:
View attachment 104208It is amazing what a couple extra drain holes and some slow release ferts will do! ;-P
I grew 400-600 seedlings in plastic pots like yours. Some in ceramic ones. I keep them outside and ignore them most of the time. Some get too wet. Other get too dry. Some die of root rot. Others die of drying out. Some that both died for different reasons were side by side.
As you are really out there to be funny, let's say you judge your cutting either grows slower or faster than your control.
Now let's say soil/substrate has zero effect on plant physiology. Then, 50% of the cuttings will grow faster than the control, 50% slower.
This is what you want to disprove. How unlikely is your test statistic when compared to this hypothesis?
Now say you grow 1 cutting of soil type A. It grows faster than the control.
What does it means? Does it mean soil has no effect whatsoever? I mean, your result matches the theory that soil has no effect whatsoever 100%.
Say you grow 2 cuttings. One is slower, one is faster. Does your result still match the theory that soil has no effect at all?
Say you grow 10 and 9 grow slower than the control. What now?
Now you go ahead and calculate how many cuttings you need to make sure that the result you get can only be gotten by chance 1 out of 100 times.
Never mind the issue of how many controls you need to find how fast a control actually grows. Hint, they growth follows a normal distribution. That means there's only a 68% chance that your control is within 1 standard deviation of whatever the true growth of the control would be. That means it is basically a coin flip that your control grows way faster or slower than it ought. And one standard deviation may be much bigger than the effect of kanuma vs akadama.
Answer:
This thread is stupid.
For stupid people:
Throw up a coin. It lands heads. This shows it is likely that a coin lands heads 100% of the time. Or, this shows it is likely that a coin lands heads more often than 0.0001% of the time. Or, anything in between.
It is amazing what a couple extra drain holes and some slow release ferts will do! ;-P
