Correction: Burgel et al. Impact of Different Growing Substrates on Growth, Yield and Cannabinoid Content of Two Cannabis sativa L. Genotypes in a Pot Culture. Horticulturae 2020, 6, 62

In the original publication [1], an error occurred in the values for root length density (RLD) presented in

Table 4. Mean leaf dry weight (DW) in g plant⁻¹ and root length density (RLD) in cm cm⁻³ of genotypes KAN and 0.2x, grown on peat-mix (PM), peat-mix + 30% green fibre (G30) and 100% coco coir fibre (CC) substrate. Results are presented as mean values ± standard error (Mean ± SE). Letters compare the mean DW yield of leaves and mean RLD. Means in one column followed by at least one identical lower-case letter do not differ significantly as indicated by Tukey’s test (α = 0.05). The p-values correspond to global F tests for differences between the levels of the mentioned genotypes or substrates.

Trait	Substrate	Genotype
Leaf DW [g plant−1]	PM	5.78 ± 0.47 a
	G30	5.66 ± 0.44 a
	CC	3.30 ± 0.47 b
RLD [cm cm−3]	PM	4.32 ± 0.48 ab
	G30	4.63 ± 0.46 a
	CC	3.09 ± 0.48 b
p-values Leaf
Genotype [G]	0.0002
Substrate [S]	0.0010
G × S Interaction	0.2994
p-values RLD
Genotype [G]	<0.0001
Substrate [S]	0.0279
G × S Interaction	0.4819

. A calculation error in the conversion of the RLD data into the unit cm cm⁻³ was found and corrected. The corrected values of Table 4 and the revised table caption are shown below.

Thus, the subsequent paragraph contains the revised part which corrects the final paragraph of the original publication on page 8. In detail, the value “(3087.51 cm cm⁻³)” now correctly reads “(4.63 cm cm⁻³)”, the value “(2881.65 cm cm⁻³)” correctly reads “(4.32 cm cm⁻³)”, the value “(2063.09 cm cm⁻³)” correctly reads “(3.09 cm cm⁻³)”, the value “(4173.07 cm cm⁻³)” correctly reads “(6.26 cm cm⁻³)”, and the value “(1181.76 cm cm⁻³)” correctly reads “(1.77 cm cm⁻³)”. The corrected paragraph is shown below.

Root length density (RLD) was significantly affected by the different growth media treatments and genotypes. Plants grown in G30 media had 4.63 cm cm⁻³, the significantly highest RLD, followed by PM (4.32 cm cm⁻³) and the CC plants with a RLD of 3.09 cm cm⁻³ (Table 4; Figure 5). Genotype 0.2x (6.26 cm cm⁻³) had a significantly higher RLD compared with KAN (1.77 cm cm⁻³).

The authors apologize for any inconvenience caused, and state that the scientific conclusions are unaffected. The original publication has also been updated.