Differing international tsp sizes changes fert output

[kisanjong]

Differing international tsp sizes changes fert output

So there is a difference in size between US teaspoons and British teaspoons. The difference is quite dramatic:
1.0 UK tsp = 1.2 US tsp

That's a 20% increase, or a 17% decrease.
http://www.traditionaloven.com/culin...on-tsp-us.html

And there are different sizes of teaspoons internationally, which further compounds the problem of accurate volume.

So which teaspoon was used for the fertilizer weights?

Perhaps adding additional options for various international teaspoons would provide better accuracy.

[ravenwilde]

I have no idea what the answer to this is o_o

I wish wet was here :(

[kisanjong]

I would say wet used US tsp

We could add the option of both?

tsp (US)
tsp (Metric)