Fig. 10: Height of tomatoes

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by Landbúnaðarháskóli_Íslands

Fig. 43: Profit margin in relation to treatment – calculation scenarios

4.2 Development of tomatoes

4.2.1 Plant diseases and pests

Neither plant diseases nor pests were observed.

4.2.2 Height

Tomato plants were growing about 2-4 cm per day and reached at the end of the experiment about 4 m (Fig. 10). The height of the plants at the end of the growing period was independent of the light treatment.

Fig. 10: Height of tomatoes.

Letters indicate significant differences at the end of the experiment (HSD, p ≤ 0,05).

4.2.3 Weekly growth

All treatments were growing each week on average 19-21 cm (Fig. 11). The weekly growth was independent of the light treatment.

4.2.4 Number of leaves

Plants had on average 15 leaves. However, the treatment “HPS, Hybrid+LED” had on average a significantly lower amount of leaves compared to the other light treatments (Fig. 12).

Fig. 10: Height of tomatoes

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Fig. 43: Profit margin in relation to treatment – calculation scenarios

4.2 Development of tomatoes

4.2.1 Plant diseases and pests

4.2.2 Height

Fig. 10: Height of tomatoes.

4.2.3 Weekly growth

4.2.4 Number of leaves

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Fig. 43: Profit margin in relation to treatment – calculation scenarios

Tab. 12: Comparision of yield with different treatments and calculation scenarious regarding placement of LED lights

Fig. 42: Profit margin in relation to yield with Hybrid top lighting with(out) LED interlighting in continuous production and either HPS (a) or LED (b) lights in young plant production – calculation scenarios

Fig. 41: Profit margin in relation to yield with different light sources in young plant production and either Hybrid+LED (a) or Hybrid b) in continuous produciton – calculation scenarios

Tab. 11: Marketable yield per cluster with different light treatments

Fig. 40: Profit margin in relation to the light treatment

Tab. 8: Energy costs and investment into lights in seedling production and continuous production for one growing circle of tomatoes under different light sources

Tab. 10: Profit margin of tomatoes at different light treatments

Fig. 37: Revenues at different treatments

This article is from:

Rit LbhÍ nr 143