When temperatures are higher will Rain Bird Irrigation Supplement turn into liquid more quickly?
Yes, temperatures significantly impact the rate of water release of RBIS. In tests performed by the University of Arizona constant thermal regimes of 15°, 25°and 35° C showed water release rates doubled as the temperature increased from 15° to 25° C and then doubled again between 25° and 35° C. Water release increased about two fold for each 10°C increase in soil temperature which means water release at 35°C is roughly four times that at 15°C. The fact that water release from RBIS varies so much with temperature is not found to be a negative characteristic. In many parts of the world evaporative demand (evapo-transpiration) varies by a factor of four or five over the course of the year. Evaporative demand is lowest during the coolest months when soil temperatures are low and highest during the warmest months when soil temperature approach peak levels for the year. The relationship between water release and temperatures allows RBIS to ‘Flex” to season changes in evaporative demand and i
