OHD Question

how can it be that it takes years and so many trials to find out about the quality of a fertilizer ?

its not a new business i guess..so many products on the market..it would be so easy to compare the "ingredients" of the fertilizers to define their product quality and plant spectrum.

if they know what is in their fertilizer, it would be easy to tell which plants profit the most out of it.

this should not be too difficult in the 20st century..

anyway..i wont ask anything if this old company becomes a lithium star in the near future..the
"fruitless past" is long enough and still no incoming cash from anything visible :-(