Ascophyllum nodosum seaweed extract and mineral nitrogen in Alibertia edulis seedlings

Bernardes, Rodrigo da S.; Santos, Silvia C.; Santos, Cleberton C.; Heid, Diego M.; Vieira, Maria do C.; Torales, Elissandra P.

doi:10.1590/1807-1929/agriambi.v27n3p173-180

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Articles • Rev. bras. eng. agríc. ambient. 27 (3) • Mar 2023 • https://doi.org/10.1590/1807-1929/agriambi.v27n3p173-180 copy

Ascophyllum nodosum seaweed extract and mineral nitrogen in Alibertia edulis seedlings ¹ 1 Research developed at Universidade Federal da Grande Dourados, Dourados, MS, Brazil

Extrato de alga Ascophyllum nodosum e nitrogênio mineral em mudas de Alibertia edulis

Authorship SCIMAGO INSTITUTIONS RANKINGS

HIGHLIGHTS:

Foliar application of Ascophyllum nodosum is promising on physiological and nutritional management of seedling production.

A. nodosum increased concentration, uptake efficiency, and use of nitrogen in the tissue of Alibertia edulis seedlings.

A. edulis seedlings with 15 and 20 mL L^-1 of A. nodosum showed greater growth of aerial parts and root systems.

ABSTRACT

Physiological and nutritional management is an important practice for obtaining high quality seedlings. The use of seaweed extract has emerged as an alternative to fertilizers and biostimulants, although information on this with respect to Alibertia edulis, a fruit-bearing species native to the Cerrado region, is scarce. The aim of this study was to evaluate the effects of the Ascophyllum nodosum L. seaweed extract (ANE), both with and without the addition of mineral nitrogen, on the growth, nitrogen nutrient efficiency indices, and quality of A. edulis seedlings. The seedlings received five doses of ANE (0, 5, 10, 15, and 20 mL L^-1 of water) via foliar application, with and without the addition of mineral N to the soil (50 mg kg^-1 of urea). A randomized block design was used with the treatments arranged in a 5 × 2 factorial scheme. The plant height, stem diameter, chlorophyll index, and number of leaves obtained were analyzed in split-plots over time. Foliar application of 15 and 20 mL L^-1 of ANE contributed to greater growth and seedling quality, regardless of the addition of mineral nitrogen. Seedlings treated with mineral N alongside 13.98 mL L^-1 of ANE showed the greatest leaf area. The highest N use efficiency, N uptake, and nutrient use occurred in seedlings that received A. nodosum extract.

Key words:
urea; biostimulant; nutritional management; nutrient use efficiency

ANE/mineral N		pH CaCl₂	P (mg dm^-3)	Ca	K	Mg	Al	H + Al	SB	CEC	V (%)
ANE/mineral N		pH CaCl₂	P (mg dm^-3)	(mmol_c dm^-3)							V (%)
0 mL	With	4.8	7	36	3.6	13	0	48	52	100	52
0 mL	Without	4.6	2	30	2.9	10	2	51	43	94	46
5 mL	With	5.1	6	43	4.0	15	0	45	62	107	58
5 mL	Without	4.8	3	34	3.1	11	0	46	48	94	51
10 mL	With	5.1	5	46	4.3	16	0	45	66	111	59
10 mL	Without	4.7	3	37	3.2	12	1	58	52	110	47
15 mL	With	5.2	5	47	4.2	17	0	43	68	111	62
15 mL	Without	5.2	5	52	4.8	18	0	47	74	122	61
20 mL	With	5.2	6	49	4.7	17	0	43	71	114	62
20 mL	Without	5.2	4	44	3.9	14	0	49	62	111	56

Sources of variation	DF	Plant height	Stem diameter	Number of leaves	Chlorophyll index
Block	2	14.32	1.62	4.61	14.87
Nitrogen (N)	1	25.01^NS	0.22^NS	39.66^NS	68.20 ^NS
ANE	4	96.45*	2.43*	67.38*	20.57 ^NS
N × ANE	4	14.94^NS	0.43^NS	25.47^NS	22.58 ^NS
Time	5	407.34*	12.85*	133.45*	542.79*
Time × N	5	7.17^NS	0.15^NS	4.63*	40.25 ^NS
Time × ANE	20	10.80*	0.35*	3.01^NS	59.44*
Time × N × ANE	20	2.61^NS	0.11^NS	2.78^NS	29.02 ^NS
C.V. 1 (%)	-	35.41	32.39	33.20	21.14
C.V. 2 (%)	-	25.50	19.72	15.16	16.42

Sources of variation	DF	LA	SDM	RDM	APRR	DQI
Block	2	64373.42	0.075	1.300	0.073	0.050
Nitrogen (N)	1	15334.10 ^NS	1.917 ^NS	0.109 ^NS	0.189 ^NS	0.045 ^NS
ANE	4	70799.71*	1.823*	2.565*	0.444*	0.229*
N x ANE	4	79923.39*	0.330*	0.916^NS	0.709*	0.057*
C.V. (%)	-	31.52	27.18	59.86	17.98	36.48
		UE_N	NUE_N	N	LAR	TDM
Block	2	0.599	0.007	1.803	0.012	1.767
Nitrogen (N)	1	0.001 ^NS	0.002 ^NS	0.571^NS	0.012^NS	2.942*
ANE	4	3.022*	0.199*	14.543*	0.011^NS	8.539*
N x ANE	4	0.452 ^NS	0.047*	21.177 ^NS	0.027*	2.211*
C.V. (%)	-	38.54	40.14	21.68	12.88	33.01

Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Campina Grande, PB, Brasil, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
E-mail: revistagriambi@gmail.com

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[1] * Corresponding author - E-mail: cleber_frs@yahoo.com.br

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Ascophyllum nodosum seaweed extract and mineral nitrogen in Alibertia edulis seedlings 1 1 Research developed at Universidade Federal da Grande Dourados, Dourados, MS, Brazil

Extrato de alga Ascophyllum nodosum e nitrogênio mineral em mudas de Alibertia edulis

HIGHLIGHTS:

ABSTRACT

Ascophyllum nodosum seaweed extract and mineral nitrogen in Alibertia edulis seedlings ¹ 1 Research developed at Universidade Federal da Grande Dourados, Dourados, MS, Brazil