Effect of foliar application of boron trioxide and zinc oxide nanoparticles on leaves chemical composition, yield and fruit quality of Olea europaea L. cv. Picual

Bulletin of the National Research Centre

Table 3 Effect of foliar application of B₂O₃ and ZnO nanoparticles on leaf pigments of Picual cultivar in 2017 and 2018 seasons

Treat.	Chlorophyll a (mg/g f.w)		Chlorophyll b (mg/g f.w)		Carotene (mg/g f.w)
Treat.	2017	2018	2017	2018	2017	2018
T0	1.33 bcd	1.32 d	0.47 e	0.47 d	0.42 ef	0.66 d
T1	1.03 d	1.55 b	0.56 b	0.56 ab	0.39 g	0.69 cd
T2	1.49 abc	1.37 cd	0.54 bc	0.50 c	0.53 a	0.68 d
T3	1.06 d	1.33 cd	0.37 f	0.50 c	0.50 b	0.68 d
T4	1.40 abc	1.40 c	0.52 cd	0.52 c	0.44 d	0.72 bc
T5	1.63 ab	1.61 ab	0.59 a	0.59 a	0.43 d	0.75 a
T6	1.70 a	1.63 a	0.58 a	0.56 b	0.40 fg	0.69 cd
T7	1.27 cd	1.33 cd	0.50 d	0.50 c	0.42 de	0.67 d
T8	1.65 ab	1.64 a	0.59 a	0.58 a	0.46 c	0.73 ab

Mean in each column with similar letters is not significantly different at 5% level
T1, nano-boron at 10 ppm; T2, nano-boron at 20 ppm; T3, nano-zinc at 100 ppm; T4, nano-zinc at 200 ppm; T5, nano-boron at 10 ppm + nano-zinc at 100 ppm; T6, nano-boron at 10 ppm + nano-zinc at 200 ppm; T7, nano-boron at 20 ppm + nano-zinc at 100 ppm; T8, nano-boron at 20 ppm + nano-zinc at 200 ppm