An axolotl farm switches tractors from daily use to fewer, longer workdays while growing the same plants...

An axolotl farm switches tractors from daily use to fewer, longer workdays while growing the same plants for the axolotl snacks. The number of axolotls stayed constant. What most likely changes?
Crops grow taller from compacted soil
Fuel-related gas release decreases
Harvest timing becomes unpredictable
Soil nutrients increase due to rest days