Effects of Root Cooling on Plant Growth and Fruit Quality of Cocktail Tomato during Two Consecutive Seasons

Figure 1

Moving average of daily maximum air temperature (Air_max), photosynthetic photon flux density (PPFD) recorded inside the greenhouse from 11 October 2017 to 20 August 2018. The two seasons were indicated by arrows at the top of the graph. Root temperature treatment in the two seasons were indicated as gray, and root temperature from control group (open circles) and cooling group (open triangles) were recorded in the middle of rockwool from 1 January to 6 April and 6 June to 20 August 2018.