Fig. 2: Time course of solar irradiation

Fig. 32: Profit margin in relation to treatment – calculation scenarios urban area, VA210

4 RESULTS

4.1 Environmental conditions for growing

4.1.1 Solar irradiation

Solar irradiation was allowed to come into the greenhouse. Therefore, incoming solar irradiation was affecting plant development and was regularly measured. The natural light level was low during the whole growing period. From December to the beginning of February were less than 1 kWh/m2 reached. After that increased the incoming solar irradiation up to 5 kWh/m2 at the end of the experiment (Fig. 2).

Fig. 2: Time course of solar irradiation.

Solar irradiation was measured every day and values for one week were cumulated.

4.1.2 Chamber settings

The settings in the chambers were regularly recorded. Table 3 shows the weekly average of the CO2 amount and the average air and floor temperature as well as the average day and night temperature.

Fig. 2: Time course of solar irradiation

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Fig. 32: Profit margin in relation to treatment – calculation scenarios urban area, VA210

4 RESULTS

4.1 Environmental conditions for growing

4.1.1 Solar irradiation

Fig. 2: Time course of solar irradiation.

4.1.2 Chamber settings

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Fig. 32: Profit margin in relation to treatment – calculation scenarios urban area, VA210

Fig. 29: Profit margin in relation to tariff and treatment

Fig. 31: Profit margin in relation to yield with different varieties – calculation scenarios (urban area, VA210

Tab. 9: Profit margin of strawberries at different light treatments urban area, VA210

Tab. 6: Lighting hours, power and energy in the cabinets

Fig. 26: Revenues at different treatments

Fig. 25: Used kWh in the different chambers

Fig. 22: Sweetness, flavour, juiciness and firmness of strawberries

Fig. 19: Number of days from pollination to harvest and weight of the harvested fruit

This article is from:

Rit LbhÍ nr 103