Abstract: A fertigation sensor system includes a first sensor system and a second sensor system. The first sensor system includes a first container configured to collect a feed solution originating from a fertigation source, the feed solution including water and fertilizer at a target ratio of concentration of water to fertilizer and a first sensor disposed in the first container. The second sensor system includes a second container configured to collect the feed solution originating from the fertigation source and a second sensor disposed in the second container. The sensor systems are usable to determine volumetric flow rates and electrical conductivity and permittivity of feed solution before and after being provided to one or more plants, thereby providing data indicating plant development and growth conditions.

Abstract: Methods and systems for correction of water content measurements include determining an apparent water content measurement of a sample material while the sample material is dried in ambient vapor pressure conditions, determining a correction value that represents a relationship between the apparent water content and the vapor pressure, and correcting the apparent water content measurement based on the correction value. These methods and systems can reduce cost, measurement time, and error in water content measurement for products that lose water over time, such as while being dried or cured.