Proof of Concept - SANlight EVO 4-120

Exposure time: 18 hours daily Ø PPFDe 400µmol/m²/s DLI 25,92mol/m²/d temperature: 26°C room humidity: 70% The light intensity in the tents was set to 300µmol/m²/s at the beginning. From the 8th day, the PPFDe was increased to 400µmol/m²/s. Plants recovered from transplanting from 1 L to 7 L pots and started new growth. Root growth has started. The root system is now starting to supply the plants with sufficient nutrients. Due to the organic pre-fertilization of the substrate, slight signs of overfertilization appear on a few plants. The plants get a daily amount of water of 500ml per day and plant. Watering is done with a light fertilizer solution of 0.9 EC at a pH of 6.3.

Exposure time: 18 hours daily Ø PPFDe 400µmol/m²/s DLI 25,92mol/m²/d temperature: 26°C room humidity: 70% The light intensity in the tents was set to 300µmol/m²/s at the beginning. From the 8th day, the PPFDe was increased to 400µmol/m²/s. Plants recovered from transplanting from 1 L to 7 L pots and started new growth. Root growth has started. The root system is now starting to supply the plants with sufficient nutrients. Due to the organic pre-fertilization of the substrate, slight signs of overfertilization appear on a few plants. The plants get a daily amount of water of 500ml per day and plant. Watering is done with a light fertilizer solution of 0.9 EC at a pH of 6.3.

Exposure time: 18 hours daily Ø PPFDe 400µmol/m²/s DLI 25,92mol/m²/d temperature: 26°C room humidity: 70% The light intensity in the tents was set to 300µmol/m²/s at the beginning. From the 8th day, the PPFDe was increased to 400µmol/m²/s. Plants recovered from transplanting from 1 L to 7 L pots and started new growth. Root growth has started. The root system is now starting to supply the plants with sufficient nutrients. Due to the organic pre-fertilization of the substrate, slight signs of overfertilization appear on a few plants. The plants get a daily amount of water of 500ml per day and plant. Watering is done with a light fertilizer solution of 0.9 EC at a pH of 6.3.

Documentation day 22 to 28, 1st week of flowering Exposure time: 12 hours daily Ø PPFDe 500µmol/m²/s DLI 21,6mol/m²/s Temperature: 26°C Room humidity: 70% Light intensity was slightly increased from 400µmol/m²/s to 500µmol/m²/s. The plants are now starting to develop more lateral shoots. The morphological development is as expected. The leaves have a strong structure and healthy leaf color. The plants receive a daily water amount of 800ml per day per plant. Watering is done with a light fertilizer solution of 1.2 EC at a pH of 6.2.

Documentation day 29 - 35, 2nd week of flowering Exposure time: 12 hours daily Ø PPFDe 500µmol/m²/s DLI 21,6mol/m²/s Temperature: 26°C Room humidity: 65%. The light intensity was increased from 500µmol/m²/s to the maximum power of the lights. Tent No. 2, EVO 4-120 ~850µmol/m²/s. The plants are now in a strong elongation phase and the nodal spacing is starting to lengthen noticeably. Growth is still very satisfactory. The plants are developing vigorously and no longer show signs of over-fertilization. The plants get a daily water amount of 900ml per day and plant. Watered with a light fertilizer solution of 1.4 EC at a pH of 6.2.

Documentation day 51 - 57, 5th flower week Exposure time: 12 hours per day Ø PPFDe Tent 2 880µmol/m²/s DLI Tent 2 38.01mol/m²/d Temperature: 26°C Room humidity: 60% The plants tolerate all administered light intensities very well, even though bleaching starts in some plants especially under the high intensities. The stretching phase is over and the plants have now reached the main flowering phase. The plants have reached their final height and the volume of the flowers is increasing. The morphological development of the plants is very good. The plants get a daily amount of water of 1.300ml per day per plant. Watering is done with a light fertilizer solution of 1.5 EC at a pH of 6.0.

Documentation day 58 - 64. 6th week of flowering Exposure time: 12 hours daily Ø PPFDe Tent 2 880µmol/m²/s DLI Tent 2 38.01mol/m²/d Temperature: 26°C Room humidity: 55%. Budding continues to progress. Bleaching also progresses as flower growth increases. The flowers are noticeably increasing in mass. The plants get a daily water amount of 1.300ml per plant. Watering is an EC value of 1.7 with a pH value of 5.8

Documentation day 78 - 84. 9th flowering week Exposure time: 12 hours per day Ø PPFDe Tent 2 880µmol/m²/s DLI Tent 2 38.01mol/m²/d Temperature: 26°C Room humidity: 55% The ripening phase of the plants has started and the developed flowers begin to bulk up. Bleaching no longer occurs on new plants. The fragrance in the grow room becomes more intense. The plants receive a daily water amount of 900ml. Fertilization has reached its peak and the plants receive an EC of 1.7 with a pH of 5.9 for this last week.

Documentation day 92 - 98. 11th flowering week Exposure time: 12 hours per day Ø PPFDe Tent 2 880µmol/m²/s DLI Tent 2 38.01mol/m²/d Temperature: 26°C Room humidity: 45% This is the last flowering week for the plants and the room smells very intense. Flower development is very good down to the lower parts of the plants The ripening stage is well advanced and the plants are ready for harvest. By skipping fertilization, the plants have noticeably lost color and the leaves have turned autumnal. The plants are getting very little water at 500ml per day per plant and are being forced to dry out. The EC value this week is 0.4 and the pH 5.8.

Harvest The day before harvest, the plants were no longer watered, in order to deprive the flowers of as much water as possible. On the day of harvest, all large fan leaves were removed from the plants still standing. After removing the fan leaves, the plants were cut at pot height and the flowers were separated from the stem. Subsequently, the flowers were freed from their petals and the flowers were hung to dry. After successful flowering phase, the harvest of the hemp plants took place. The plants were first cut off whole and dried. Subsequently, the flowers were separated from the plant. The dry flowers were then trimmed by machine. Subsequently, the flowers were then finally dried at 20°C and 55% humidity. The flowers were sorted according to size (large and small flowers), and weighed. Total dry weight was 1723,3g; while Gram per Watt was 1,72g/W and the yield per meter square was at a whooping 598,37g/m²