I can use 1% of the harvest to calculate the salt for very productive fruiting crops like melons and tomatoes? This will end up being much more sea salt, can I do this without causing problems?  

Okay so I will scatter the remaining salt directly on the soil since I can only irrigate JMS at 1:100  

I apologize for all the extra questions

50g is not even close to 1% of my harvest

When do you use the 1% rule for sea salt?  

If I had a 1:10 injector that is exactly what I would do.

I cannot find an injector that will work that way.  

Does this mean I should add more sea salt even though I have a small garden?  

My area is approximately .025 acres so even if I make only 50L JMS, I cannot irrigate that much JMS without overwatering. My drip injector dilutes at 1:100 so 50L JMS would make 5,000L of total irrigated water. That would overwater the plants in my small space.

So I make even less JMS than that. I use only about 10L JMS at 1:100 before my soil is sufficiently watered. So only about 10g of sea salt is used, even though my garden should get 50g based on the numbers you provided.  

JMS 500L contains 500g of salt, which can be diluted and used for 1/4 to 8 acres. If the area is about 1/4 acre, 500g of salt is sufficient; if the area is larger, add 500g of salt per 1/4 acre. JMS Determines the amount of salt used based on area, not dilution.