Tab. 5: Cumulative total number of marketable fruits

The weekly harvest of 1. class and 2. class fruits amounted 1,0-3,5 kg/m2, but was most of the time 2,0-3,0 kg/m2 (Fig. 29).

The number of 1. class fruits was independent of the light treatment (Tab. 5). The number of 1. class fruits was neither influenced by the light source nor by the height of the lights. The number of 2. class fruits was significantly higher in “HPS” than in the other light treatments. The total number of marketable fruits was neither significantly different between light sources (“HPS” versus “Hybrid”) nor between different heights of the lights.

Tab. 5: Cumulative total number of marketable fruits.

Treatment

Number of marketable fruits

1. class 2. class total (1. class + 2. class) (no/m2) (no/m2) (no/m2) HPS 107 a 140 a 247 a

Hybrid high 90 a 115 b 205 b Hybrid 124 a 116 b 240 ab

Letters indicate significant differences (HSD, p ≤ 0,05).

Average fruit size of 1. class tomatoes varyied between 95-110 g / fruit and decreased slightly from 100-110 g / fruit to 95-100 g / fruit during the harvest period (Fig. 30). On average the weight of 1. class tomatoes was independent of the light source. However, when the lights were mounted higher, a significantly lower average size was measured.