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