Effect of foliar application of zinc on annual productivity, foliar nutrients, bioactive compounds and oxidative metabolism in pecan Cover

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Effect of foliar application of zinc on annual productivity, foliar nutrients, bioactive compounds and oxidative metabolism in pecan

Folia Horticulturae

Volume 35 (2023): Issue 1 (June 2023)

By: Damaris L. Ojeda-Barrios , Oscar Cruz-Alvarez , Esteban Sánchez-Chavez and Juan P. Ciscomani-Larios

Open Access

|Jun 2023

Figures & Tables

Morphology of the ZnO NP samples determined by scanning (A,B) and transmission (C,D) electron microscopy. ZnO NPs, zinc oxide nanoparticles.

Elemental analysis (chemical composition) by energy dispersive X-ray scattering (A) and crystalline structure by X-ray diffraction (B) of the sample ZnO NPs (Bautista-Díaz et al., 2021). ZnO NPs, zinc oxide nanoparticles.

NSCs in ‘Western Schley’ pecan leaflets sprayed with sulphates, chelates and zinc nanoparticles. The data are means of treatments in 2019 and 2020. Bars with the same letter are not significantly different (Tukey’s test, p ≤ 0.05). Error bars represent standard deviations (n = 10). NSC, Non-structural carbohydrate; NZN, nitrazinc, containing Zn(NO3)2 and urea-ammonium nitrate fertiliser; Zn-EDTA, zinc ethylene diamine-tetra-acetic acid; ZnO NPs, zinc oxide nanoparticles; ZnSO4, zinc sulphate.

Yield, nut weight and kernel percentage in ‘Western Schley’ pecan trees with the application of sulphates, chelates and zinc nanoparticles. The data are means of treatments in 2019 and 2020. Bars with the same letter are not significantly different (Tukey’s test, p ≤ 0.05). Error bars represent standard deviations (n = 10). NZN, nitrazinc, containing Zn(NO3)2 and urea-ammonium nitrate fertiliser; Zn-EDTA, zinc ethylene diamine-tetra-acetic acid; ZnO NPs, zinc oxide nanoparticles; ZnSO4, zinc sulphate.

(A) Micronutrient concentrations in ‘Western Schley’ pecan tree leaflets sprayed with sulphates, chelates and zinc nanoparticles. Bars with the same letter are not significantly different (Tukey’s test,p ≤ 0.05). Error bars represent standard deviations (n = 10). NZN, nitrazinc, containing Zn(NO3)2 and urea–ammonium nitrate fertiliser; Zn-EDTA, zinc ethylene diamine-tetra-acetic acid; ZnO NPs, zinc oxide nanoparticles; ZnSO4, zinc sulphate. (B) Micronutrient concentration in ‘Western Schley’ pecan trees with the application of sulphates, chelates and zinc nanoparticles. Bars with the same letter are not significantly different (Tukey’s test, p ≤ 0.05). Error bars represent standard deviations (n = 10). NZN, nitrazinc, containing Zn(NO3)2 and urea-ammonium nitrate fertiliser; Zn-EDTA, zinc ethylene diamine-tetra-acetic acid; ZnO NPs, zinc oxide nanoparticles; ZnSO4, zinc sulphate.

Concentration of photosynthetic pigments and phenolic compounds in ‘Western Schley’ pecan tree leaflets sprayed with sulphates, chelates and zinc nanoparticles_

Treatments (200 mg · L⁻¹)	TChl (μg · g⁻¹)	TC (μg · g⁻¹)	TFl (mg GAE · g⁻¹)	TP (mg QE · g⁻¹)
NZN (control)	45.1 a	14.7 a	55.7 a	18.4 a
ZnSO₄	45.5 a	10.5 b	53.7 a	17.1 a
Zn-EDTA	41.7 b	10.7 b	61.6 a	20.0 a
ZnO NPs	40.7 b	12.7 ab	63.6 a	22.0 a

Oxidative metabolism and AC in ‘Western Schley’ pecan tree leaflets sprayed with sulphates, chelates and zinc nanoparticles_

Treatments (200 mg · L⁻¹)	SOD	H₂O₂	CAT	GPx	AC
NZN (control)	1.4 a	0.4 a	3.5 a	3.2 b	83.1 a
ZnSO₄	1.3 ab	0.3 b	2.3 b	5.6 a	80.6 a
Zn-EDTA	1.2 c	0.4 b	2.3 b	5.2 a	76.9 b
ZnO NPs	1.3 b	0.3 b	2.4 b	5.3 a	82.6 a

Yield, nut weight and kernel percentage in ‘Western Schley’ pecan tree leaflets sprayed with sulphates, chelates and zinc nanoparticles_

Treatments (200 mg · L⁻¹)	Nut quality
	Yield (kg per tree)		Nut weight (g · kg ¹ FW)		Kernel (%)
	2019	2020	2019	2020	2019	2020
NZN (control)	9.9 a	15.6 b	156.1 a	166.1 b	52.2 a	53.0 a
ZnSO₄	9.1 a	14.1 b	153.4 a	167.4 b	60.4 a	58.0 a
Zn-EDTA	8.7 a	14.9 b	152.5 a	164.5 b	54.3 a	54.3 a
ZnO NPs	9.9 a	14.5 b	158.6 a	166.6 b	54.9 a	54.5 a

Nutrient concentrations in ‘Western Schley’ pecan tree leaflets sprayed with sulphates, chelates and zinc nanoparticles_

Treatments (200 mg · L⁻¹)	Concentration (g · kg⁻¹)
	Total-N		Total-P		K⁺		Ca2+		Mg²⁺
	2019	2020	2019	2020	2019	2020	2019	2020	2019	2020
NZN (control)	27.9 a	23.9 b	2.7 a	2.0 b	19.7 a	17.6 a	33.66 a	28.32 b	4.8 a	4.1 b
ZnSO₄	26.3 a	27.3 a	2.1 a	1.7 b	19.24 a	20.3 a	31.62 a	33.10 a	3.9 a	4.3 a
Zn-EDTA	24.7 a	25.4 a	2.7 a	1.8 b	17.0 a	22.2 b	31.10 a	32.14 a	3.8 a	4.4 a
ZnO NPs	24.3 a	25.9 a	2.5 a	1.9 b	21.4 a	19.4 a	30.30 a	31.14 a	4.3 a	4.1 a
	Concentration (mg · kg⁻¹)
	Fe2+		Cu2+		Mn²⁺		Zn2+
NZN (control)	139.4 a	181.9 b	6.3 a	5.8 b	231.0 a	212.4 b	48.5 a	45.3 a
ZnSO₄	154.9 a	191.6 b	6.4 a	6.2 a	236.8 a	233.8 a	39.6 a	40.4 a
Zn-EDTA	160.8 a	194.5 a	6.5 a	6.3 a	242.4 a	236.0 a	35.8 a	38.0 b
ZnO NPs	118.3 a	179.4 b	6.2 a	6.6 b	227.8 a	241.0 b	39.3 a	35.8 b

Concentration of NSCs in ‘Western Schley’ pecan tree leaflets sprayed with sulphates, chelates and zinc nanoparticles_

Treatments (200 mg · L⁻¹)	NSCs (g · kg⁻¹)
	Fructose		Glucose		Sucrose		Starch
	2019	2020	2019	2020	2019	2020	2019	2020
NZN (control)	37.9 a	34.3 a	41.9 a	38.0 a	41.9 a	43.5 a	38.8 a	40.2 a
ZnSO₄	40.7 a	38.5 a	45.0 a	42.6 a	37.5 a	36.7 a	34.6 a	34.5 a
Zn-EDTA	39.3 a	40.3 a	43.5 a	44.6 a	40.8 a	39.4 a	37.5 a	36.6 a
ZnO NPs	39.5 a	38.2 a	43.6 a	42.9 a	36.7 a	39.3 a	35.7 a	39.6 a

DOI: https://doi.org/10.2478/fhort-2023-0014 | Journal eISSN: 2083-5965 | Journal ISSN: 0867-1761

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Language: English

Page range: 179 - 192

Submitted on: Jan 14, 2023

Accepted on: Apr 5, 2023

Published on: Jun 26, 2023

Published by: Polish Society for Horticultural Sciences (PSHS)

In partnership with: Paradigm Publishing Services

Publication frequency: 2 issues per year

Keywords:

guaiacol peroxidase,

oxide nanoparticles,

‘Western Schley’,

Related subjects:

Life sciences, other

© 2023 Damaris L. Ojeda-Barrios, Oscar Cruz-Alvarez, Esteban Sánchez-Chavez, Juan P. Ciscomani-Larios, published by Polish Society for Horticultural Sciences (PSHS)
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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