Ferreira, Matheus da Silva; Santos, José Zilton Lopes; Tucci, Carlos Alberto Franco; Costa, Lucifrancy Vilagelim

doi:10.5902/1980509827731

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Artigo • Ciênc. Florest. 27 (2) • Apr-Jun 2017 • https://doi.org/10.5902/1980509827731 copy

INITIAL GROWTH OF ITAÚBA AND MACACAÚBA UNDER CONTAINERS OF DIFFERENT SIZES

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The dimensions of the container affect both the production cost and the quality of seedlings of forest species, and the pattern of response of these depends on the specificity of the species. The objective of this study was to evaluate the effect of size of containers on the initial growth of forest species Mezilaurus itauba Taub. ex Mez and Platymiscium ulei Harms. Two experiments were conducted concomitantly in nursery conditions, using the completely randomized design with five replicates. The treatments comprised of six sizes of containers: 20 cm x 15 cm (T1), 20 cm x 20 cm (T2), 23 cm x 20 cm (T3), 25 cm x 20 cm (T4), 30 cm x 20 cm (T5) and 33 cm x 23 cm (T6). After 90 days of growth, the size of containers affects differently the quality of the seedlings of both the species. The size of container 25 x 20 cm is more appropriate for the cultivation of macacaúba species while the best response to itaúba was obtained for the container 33 x 23 cm. On the other hand, the containers 20 x 15 cm and 20 x 20 cm should not be used for any of the tested species.

Keywords:
native species; seedling quality; propagation

TABELA 1 Acúmulo de nitrogênio (N), fósforo (P), potássio (K), cálcio (Ca) e magnésio (Mg) na parte aérea das mudas de Platymiscium ulei em função do tamanho de recipientes, após 90 dias de cultivo em viveiro.

Tratamentos	N	P	K	Ca	Mg
			g/ unidade	experimental
1	5,81c	0,51c	3,76c	2,18b	0,72b
2	10,0bc	0,96bc	9,46bc	4,14ab	1,31ab
3	13,51ab	1,29ab	13,29ab	5,91a	1,78a
4	16,40ab	1,61a	16,26a	7,05a	2,09a
5	17,18ª	1,61a	16,11a	6,55a	2,22a
6	16,46ab	1,43a	15,61ab	6,42a	2,06a

TABELA 2 Acúmulo de nitrogênio (N), fósforo (P), potássio (K), cálcio (Ca) e magnésio (Mg) na parte aérea das mudas de Mezilaurus itauba em função do tamanho de recipientes, após 90 dias de cultivo em viveiro.

Tratamentos	N	P	K	Ca	Mg
			g/ unidade	experimental
1	1,88bc	0,16ab	0,13bc	0,47ns	0,17ab
2	1,54c	0,12b	0,11c	0,40	0,12b
3	3,09ab	0,21a	0,21ab	0,74	0,23a
4	3,57ª	0,11a	0,21ab	0,72	0,26a
5	2,52abc	0,19ab	1,79abc	0,66	0,24a
6	3,54ª	0,22a	2,49a	0,72	0,25a

Universidade Federal de Santa Maria Av. Roraima, 1.000, 97105-900 Santa Maria RS Brasil, Tel. : (55 55)3220-8444 r.37, Fax: (55 55)3220-8444 r.22 - Santa Maria - RS - Brazil
E-mail: cienciaflorestal@ufsm.br

Acompanhe os números deste periódico no seu leitor de RSS

[TFN1] Em que: T1 = 20 x 15 cm; T2 = 20 x 20 cm; T3 = 23 x 20 cm; T4 = 25 x 20 cm; T5 = 30 x 20 cm; T6 = 33 x 23 cm. Médias seguidas de mesmas letras nas colunas não diferem estatisticamente, pelo teste de Tukey, a 5 %.