Table 2. Literature review on lettuce cultivation conditions.

Photoperiod	Humidity	Temperature	Duration	Cultivation type	CO 2	Ref.
16	60–80%	16–18 °C	transplanted 20 + 35 days	Vertical Farming (VF)		14
16–20	65%	22 °C	14 + 30	Indoor Controlled Environment Agriculture (CEA)		15
24		23,9	30 days	Hydroponic Yield		16
10	60–80	20,5–24	15 + 30	Tempered glass covered greenhouse (GH)		17
12–16	60–65%	21.7	29 + 48	Conventional soilbased cultivation (CN) system	11.97 m −2 s −1	18
12–16	60–65%	22.3	22 + 40.5	Deep water culture (DWC) system	12.95 m −2 s −1
12–16	60–65%	23.3	22 + 47	Nutrient film technique (NFT) system	10.18 m −2 s −1
12		20–22	35			19
18		22–28		Directly from the Seeds in Three Separate NTF Hydroponic Systems		20
16–20	70–80	22–26/15–20	30 days			21
	65–75	24/18	19 days after transplantation			22
	60	11	34			23
	60	20	15
	60	32	14
	60–70	17–22	57 days			24