Field Survey of Tea Bush Surface Temperature and Typical Cases in Severe Frost Damage on March 30, 2010 on the Makinohara Plateau in Shizuoka Prefecture

Abstract

Many tea fields in Shizuoka suffered severe frost damage on March 30, 2010. The minimum teabush surface temperatures in eight tea fields were investigated. Without any anti-frost equipment, the surface temperature was near -7.5°C . With frost fans, they were between -5.8°C and -3.4°C . Infields equipped with sprinklers, they were between -2.7°C and -2.0°C . We present nine photos of the typical frost damage with detailed descriptions.