Overall, a lot of them did not look very healthy. During the eighth week, I was away for the break so I was expecting them to be fully grown and healthy. A lot of them had mild to severe mildew damage. Some of them had mild to severe tip burn. For mildew problem, I am now suspecting that it is happening because of the weekend watering. (Since they are growing under the hydroponics system, these lettuce plants do not need to be watered on their leaves. However, I am assuming that people who are in charge of it in the greenhouse do it anyway. So, I decided to leave a note so that they do not water these hydroponic salad table anymore.) For tip burn problem, it probably comes from calcium deficiency in the nutrient solution. However, not all of the plants show this symptom so it could partially also be genetic problem. Also, I decided not to account any harvest which did not look edible since the main purpose of this project is to identify edible greens which yield enough.
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