The synergistic effect of biochar and poly(2-ethyl-2-oxazoline)/poly(2-hydroxyethylmethacarylate)/chitosan) hydrogels on saline soil properties and carrot productivity

Abdeen, Sayed A.; Hefni, Hassan H. H.; Awadallah-F, Ahmed; El-Rahman, Nasser R. Abd

doi:10.1186/s40538-023-00435-2

Chemical and Biological Technologies in Agriculture

Table 6 Effect of biochar and hydrogels on macronutrients content in carrot roots

From: The synergistic effect of biochar and poly(2-ethyl-2-oxazoline)/poly(2-hydroxyethylmethacarylate)/chitosan) hydrogels on saline soil properties and carrot productivity

Treatments (%)	N (%)		P (%)		K (%)
Treatments (%)	Value	Relative increase	Value	Relative increase	Value	Relative increase
Control	1.10 ± 0.06^c	0.00	0.30 ± 0.00^b	0.00	0.50 ± 0.01^b	0.00
BC0.5	1.35 ± 0.04^a	22.73	0.40 ± 0.01^a	33.33	0.62 ± 0.02^a	24.00
BC1	1.40 ± 0.03^a	27.27	0.48 ± 0.01^a	60.00	0.70 ± 0.05^a	40.00
(PEtOx-HEMA-CS1)0.05	1.20 ± 0.06^b	9.09	0.40 ± 0.02^a	33.33	0.55 ± 0.03^a	10.00
(PEtOx-HEMA-CS1)0.1	1.20 ± 0.04^b	9.09	0.40 ± 0.01^a	33.33	0.60 ± 0.04^a	20.00
(PEtOx-HEMA-CS5)0.05	1.30 ± 0.05^b	18.18	0.40 ± 0.01^a	33.33	0.60 ± 0.01^a	20.00
(PEtOx-HEMA-CS5)0.1	1.30 ± 0.07^b	18.18	0.42 ± 0.01^a	40.00	0.63 ± 0.02^a	26.00
(PEtOx-HEMA-CS10)0.05	1.30 ± 0.09^b	18.18	0.43 ± 0.01^a	43.33	0.70 ± 0.03^a	40.00
(PEtOx-HEMA-CS10)0.1	1.35 ± 0.06^a	22.72	0.46 ± 0.01^a	53.33	0.70 ± 0.02^a	40.00
PEtOx-HEMA-CS1)0.05-BC0.5)	1.35 ± 0.04^a	2273	0.40 ± 0.01^a	33.33	0.68 ± 0.02^a	36.00
PEtOx-HEMA-CS1)0.1-BC0.5)	1.37 ± 0.06^a	24.55	0.41 ± 0.01^a	36.67	0.70 ± 0.03^a	40.00
PEtOx-HEMA-CS1)0.05-BC1)	1.35 ± 0.04^a	22.73	0.42 ± 0.01^a	40.00	0.75 ± 0.04^a	50.00
PEtOx-HEMA-CS1)0.1-BC1)	1.40 ± 0.02^a	27.27	0.42 ± 0.01^a	40.00	0.75 ± 0.02^a	5.00
PEtOx-HEMA-CS5)0.05-BC0.5)	1.40 ± 0.01^a	27.27	0.44 ± 0.01^a	46.67	0.71 ± 0.02^a	42.00
PEtOx-HEMA-CS5)0.1-BC0.5)	1.42 ± 0.02^a	29.09	0.44 ± 0.01^a	46.67	0.75 ± 0.02^a	50.00
PEtOx-HEMA-CS5)0.05-BC1)	1.40 ± 0.03^a	27.27	0.46 ± 0.01^a	53.33	0.65 ± 0.02^a	30.00
PEtOx-HEMA-CS5)0.1-BC1)	1.44 ± 0.02^a	30.91	0.45 ± 0.01^a	50.00	0.65 ± 0.05^a	30.00
PEtOx-HEMA-CS10)0.05-BC0.5)	1.40 ± 0.02^a	27.27	0.43 ± 0.02^a	43.33	0.70 ± 0.01^a	40.00
PEtOx-HEMA-CS10)0.1-BC0.5)	1.45 ± 0.01^a	31.82	0.50 ± 0.02^a	66.67	0.80 ± 0.02^a	60.00
PEtOx-HEMA-CS10)0.05-BC1)	1.46 ± 0.03^a	32.73	0.48 ± 0.03^a	60.00	0.80 ± 0.05^a	60.00
PEtOx-HEMA-CS10)0.1-BC1)	1.50 ± 0.03^a	36.36	0.51 ± 0.03^a	70.00	0.86 ± 0.06^a	72.00

Treatments are descending order alphabetically (a,b and c) according to the significance at p ≤ 0.05

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