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Table 2 Acid treatment: relative germination rate of Adansonia digitata seeds after 10 weeks [%]

From: Adansonia digitata germination tests. Elephants or heat: what causes scarification of seed to facilitate germination?

Treatment2017a2017b20182019aAverage
H2SO4 for 5 min  0 0
H2SO4 for 10 min1273 7.3**
H2SO4 for 15 min  14 14**
HCl for 1 h, pH 2   00
HCl for 1 h, pH 3   22
HCl for 2 h, pH 2   11
HCl for 2 h, pH 3   22
Elephants´ digestion, germinating in soil071 2.7*
Elephants´ digestion, germinating in elephants´ faeces  1 1
  1. Results obtained in three test setups with 100 seeds per treatment each: 2017a, 2017b, 2018 and 2019a. Significant increase of GR compared to the control without treatment are indicated with *P<0.05, **P<0.01