Providing food from multiple categories can increase health of your population. A food category can participate in health bonus if it has a health icon next to it. It requires at least two categories to be satisfied before a bonus is provided.
Employs microorganisms to convert sugars into other useful substances such as ethanol. The microorganisms employed here are not getting any salary (they just love sugar).
Every crop needs water to grow based on its water requirements. If there is not enough water, the crop will stop growing and will start to wither. If water is not provided over longer periods of time, the crop can dry out, forcing a premature harvest. Water replenishes during the rain. Later, farms can be upgraded with an irrigation system that can provide water at any time. When nothing is growing on the farm, water will slowly evaporate. Crops can start growing only when soil has some water.
Amount of stored water ready for irrigation. Farm will automatically start irrigation when soil water level is low. Irrigation will be always off during rain.