Decomposed Babassu Biomass: New Substrate for the Production of <i>Jacaranda mimosifolia</i> D. Don Seedlings

Cavalcante, Henrique Simões; Sousa, Pedro Victor Santos de; Santos, Raimundo José Nascimento dos; Cordeiro, Kleber Veras; Andrade, Hosana Aguiar Freitas de; Machado, Nitalo André Farias; Silva-Matos, Raissa Rachel Salustriano da

doi:10.1590/2179-8087-FLORAM-2020-0045

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ORIGINAL ARTICLE, Forest Management • Floresta Ambient. 28 (2) • 2021 • https://doi.org/10.1590/2179-8087-FLORAM-2020-0045 copy

Decomposed Babassu Biomass: New Substrate for the Production of Jacaranda mimosifolia D. Don Seedlings

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

In Maranhão babassu forest, the decomposed babassu biomass (DBB) has been used empirically by several farmers for the production of Jacaranda mimosifolia seedlings. This study aimed to evaluate the potential of DBB as a substrate. The substrate compositions were S1: 100% soil (control); S2: 20% DBB; S3: 40% DBB; S4: 60% DBB; S5: 80% DBB and S6: 100% DBB. The experiment was carried out from October to December 2019 at Federal University of Maranhão, Chapadinha, Maranhão, Brazil. It was observed the use of DBB enhances the emergency speed index and germination percentage, besides resulted in the development of the aerial part and the root development. Thus, DBB may be used as an alternative substrate for the production of Jacaranda mimosifolia seedlings. It is recommended to include 40% babassu biomass with 60% soil in the composition of the substrate to improve the morphological development of Jacaranda mimosifolia seedlings.

Keywords:
Alternative Substrates; Attalea speciosa Mart; Seedling Quality; Sustainability

Substrates	GD	PD	Porosity
Substrates	(g cm^-3)		(%)
S1	1.44	2.67	45.99
S2	1.28	2.64	51.53
S3	1.18	2.57	54.01
S4	0.98	2.24	56.22
S5	0.73	1.88	60.91
S6	0.33	0.97	65.95

Substrates	pH	EC	N	C	P	K	Ca	Mg	S
Substrates		dS m^-1	g kg^-1		mg kg^-1	cmol_c kg^-1
S1	5.06	0.10	0.63	8.94	13.00	0.07	0.80	0.30	1.50
S2	4.88	0.61	1.23	14.76	14.00	0.67	1.60	1.00	3.80
S3	5.11	1.36	1.46	21.48	13.00	1.82	3.20	1.70	7.60
S4	4.83	1.79	2.02	40.92	13.00	2.35	4.40	2.80	10.80
S5	5.16	3.00	3.47	44.04	27.00	6.17	10.90	4.60	24.60
S6	5.32	4.34	5.88	145.20	33.00	3.63	20.60	15.20	41.50

VS	Medium Square
VS	BDM	ADM	LA	RV	SH	DNH	RL	ESI	GP	DQI
DBB	2.6*	1.7ns	20.4**	2.1ns	4.8**	5.4*	1.2ns	9.4**	46.3**	2.8*
P value	0.046	0.178	<0.001	0.111	<0.001	0.003	0.338	0.002	0.001	0.043
CV (%)	28.53	26.3	20.14	22.88	13.93	12.36	15.85	14.33	6.63	25.18

	BDM	ADM	LA	RV	SH	DNH	RL	ESI	GP
BDM
ADM	0.494						¹Very strong
LA	0.138	0.370					Strong
RV	0.042	-0.029	0.558*				Moderate
SH	0.460*	0.655*	0.454*	0.297			Weak
DNH	-0.143	0.215	0.516*	0.380	0.131		No correlation
RL	0.123	0.233	0.130	0.107	0.446*	0.092
ESI	-0.135	0.224	0.491*	0.522*	0.475*	0.436*	0.209
GP	-0.053	0.300	0.614*	0.444*	0.543*	0.453*	0.288	0.772*
DQI	0.511*	0.998*	0.374	-0.014	0.656*	0.227	0.236	0.275	0.312

Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro Rodovia BR 465 Km 7, CEP 23897-000, Tel.: (21) 2682 0558 | (21) 3787-4033 - Seropédica - RJ - Brazil
E-mail: floram@ufrrj.br

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[1] CORRESPONDENCE TOHosana Aguiar Freitas de Andrade Universidade Federal do Ceará, Avenida Mister Hull, nº s/n, CEP 60455-760, Fortaleza, CE, Brasil. e-mail: hosana_f.andrade@hotmail.com