4. Discussion
Lighting of the fruit depended on their position in the tree canopy (Fig. 1a). Inner fruit received less light, irrespective of the use of hail net. Lighting on outer and top fruit was higher under and outside the hail net, and PAR was comparable between the
treatments under the hail net and in the open (Fig. 1b). Romo-Chacon et al. (2007) also reported that position in the canopy showed a highly significant interaction for PAR distribution. The inner canopy of trees under black hail net received the least PAR,
and PAR measured in the upper parts of the canopy was significantly higher than in its lower parts.