Here is the full list of all 24 Farming Simulator 19 trophies - there are 6 bronze, 11 silver, 6 gold and 1 platinum.
Breed 100 chickens
Harvest 1 hectare
Cut down 25 trees
Cut down 1 tree
Own a bank account with 10 million ingame money
Sow 1 hectare
Cultivate 1 hectare
Collect all trophies
Reach 10 hours of playing time in a single savegame
Complete 1 mission
Complete 50 missions
Complete 100 missions
Fertilize 1 hectare
Cultivate 10 hectares
Sow 10 hectares
Fertilize 10 hectares
Harvest 10 hectares
Cultivate 100 hectares
Sow 100 hectares
Fertilize 100 hectares
Harvest 100 hectares
Breed 20 cows
Breed 30 sheep
Breed 50 pigs