Fig. 4.

The amount of incident radiation (PAR) detected close to ‘Elsanta’ (top) and ‘Flamenco’ (bottom) strawberry plants grown on a range of mulches with different reflective properties. Incident radiation is expressed directly in proportion to values of an external sensor to remove daily and seasonal changes during measurement. Reflected radiation is measured at the same position as the incident radiation, with the sensors inverted, and is expressed as a proportion of the incident radiation. Each data point represents the mean of four replicate blocks measured on each date.