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Fig. 27: Average weight of tomatoes (1. class fruits) at different treatments
Average fruit size of first class tomatoes was varying between 85-120 g / fruit (Fig. 27). Diamantino had even a higher fruit size at the beginning of the harvest period, but decreased to the value of the other treatments. It seems that grafted tomatoes had slightly smaller fruits, especially with a higher light intensity (300 W/m2) and top density.
Average weight of tomatoes 1. class (g/fruit)
150 145 140 135 130 125 120 115 110 105 100 95 90 85 80 75
Ø
101 100 98 96
240 HPS, Diamantino 240 HPS, ungrafted Encore 240 HPS, grafted Encore 300 HPS, grafted Encore
Fig. 27: Average weight of tomatoes (1. class fruits) at different treatments.
To observe the success of flowering until harvest, the flowering was classified and the number of “fruits total” (fruits that were supposed to be harvested later) was registered. When a cluster was harvested, the total number of “fruits harvested” was counted. The number of “lost fruits” is marking the difference between the number of fruits that were registered at flowering (fruits total) and the number of harvested fruits. “Lost fruits” might have been aborted or did not develop well and stayed small. The number of lost fruits was in average slightly higher when Encore was grafted compared to ungrafted Encore. Much light had a negative influence on the number of fruits, in average 0.7 more “lost fruits” were counted (Fig. 28).
