Table 7.

Main effects of biostimulant dose, application method and cultivar on net photosynthesis, transpiration rate, stomatal conductance, concentration of CO₂, electronic transport rate, efficiency of Photosystem II and fluorescence parameters in snapdragon plants.

Treatments	Net photosynthesis (μmol CO2 m−2 s−1)	Transpiration rate (mmol H2O m−2 s−1)	Stomatal conductance (mmol H2O m−2 s−1)	Concentration of CO2 (ppm)	Electronic transport rate (μmol e− m−2 s−1)	Efficiency of photosystem II (F'v/F'm)	Chlorophylls fluorescence (Fv/Fm)
DOSE (g L−1) (D)
0	9.43 b	1.83b	0.08b	175.8b	112.1c	0.26b	0.83a
0.1	14.51a	2.88a	0.15a	198.9a	129.1a	0.29a	0.84a
0.2	14.21a	2.82a	0.14a	209.1a	120.7b	0.27b	0.84a
METHOD (M)
Foliar spray	11.96a	2.28b	0.10b	184.6b	117.7a	0.26b	0.84a
Root drenching	12.85a	2.75a	0.14a	204.6a	124.0a	0.29a	0.84a
CULTIVAR (CV)
Yellow floral showers	12.18a	2.82a	0.13a	205.8a	132.9a	0.30a	0.81b
Red sonnet	12.62a	2.19b	0.11a	183.3b	108.8b	0.25b	0.87a
SIGNIFICANCE
D	***	*	**	**	*	**	ns
M	ns	*	*	**	ns	**	ns
CV	ns	*	ns	ns	*	*	*
D × M	ns	ns	ns	*	ns	**	ns
D × CV	ns	*	ns	**	ns	*	ns
M × CV	ns	ns	ns	*	ns	*	ns
D × M × CV	ns	ns	ns	ns	ns	**	ns

Different letters within each column indicate significant differences according to Duncan's multiple-range test (P ≤ 0.05).

ns, non significant,

^*P < 0.05,

^**0.01, and

^***0.001, indicate level of significance.