Where did your sheep manure come from? The only thing that springs to mind is that perhaps the sheep foraged on an area that was sprayed to kill broad leaf plants!!!!

How much sun does your garden get?

Another thought is that perhaps you are over-fertilizing and getting lots of leaves but no fruit.

Linda

Not possible. No GM tomato seeds have been available since the 1990s and even then what few there were were highly restricted. Plus no GM modifications would have caused you residual soil problems.

By far the most likely cause is a skewed pH of your soil due to all the additives over the years. IMO you need to have professional soil test done.

"sheep manure and tripple mix..also used some fish emulsion" is excessive fertilization in most soils and can easily leads to salt build up in the soil, excess N, and skewed pH.

Next most likely cause as labradors mentioned is contaminated compost/manure.

Dave

In the last year I have begun to wonder if my compost has not been the problem. I do collect fresh cut grass and fall leaves from the neighborhood. Two years after I started collecting leaves from one neighbor, I found out he was bring home herbicides from his workplace, as the retail products were "not strong enough". One article in a recent Mother Earth News article said some herbicide effects lasted up to four years.

Straight sheep manure is pretty strong stuff. Then on top of that you added others. Tomato plant fruits easily in poor soil. Though the fruits will be smaller and few.

You might want to contact your state extension agent for advices. Most states offer free soil test as well.

Tim