Estacas de amoreira tratadas com hormônios vegetais em dois sistemas de plantio e referentes coberturas do estufim

Rúbia, Antonio Castilho; Inforzato, Romeu; Gomes, F. Pimentel

doi:10.1590/S0071-12761963000100008

Resumo

Four experiments on root formation on cuttings of mulberry trees of the variety Catania 1 were carried out. In each case the hormones Dieradix "M D", Dieradix "D", indol 3-yl-acetic acid, and I-naphthyl acetic acid were used, besides the control, without hormone. In all cases "normal" and "upside-down" planting were tried. The percentage x of cuttings with roots, after 54 days, were computed and transformed by the formula y = arc sin √P/100 for use in statistical analysis. The combined analysis of variance of the 4 trials led to the following results: "Upside-down" planting showed significantly higher percentage of rooting; Indol 3-yl-acetic acid was significantly better than control or other hormones. The percentages of rooted cuttings were as follows: Normal planting Upside-dow planting Indol 3-yl acetic acid 43.5% 90.9% I-naphthyl acetic acid 1.9% 69.3% Control 4.7% 22.2% Dieradix «M D» 2.4% 63.8% Dieradix «D» 1.3% 36.0%

Escola Superior de Agricultura «Luiz de Queiroz»

SUMMARY

Four experiments on root formation on cuttings of mulberry trees of the variety Catania 1 were carried out. In each case the hormones Dieradix "M D", Dieradix "D", indol 3-yl-acetic acid, and I-naphthyl acetic acid were used, besides the control, without hormone. In all cases "normal" and "upside-down" planting were tried. The percentage x of cuttings with roots, after 54 days, were computed and transformed by the formula y = arc sin √P/100 for use in statistical analysis. The combined analysis of variance of the 4 trials led to the following results:

"Upside-down" planting showed significantly higher percentage of rooting;

Indol 3-yl-acetic acid was significantly better than control or other hormones.

The percentages of rooted cuttings were as follows:

Normal planting Upside-dow planting

Indol 3-yl acetic acid 43.5% 90.9%

I-naphthyl acetic acid 1.9% 69.3%

Control 4.7% 22.2%

Dieradix «M D» 2.4% 63.8%

Dieradix «D» 1.3% 36.0%

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LITERATURA CITADA

1 - GERHARD, NAUNDORF - Las fitohormonas en Agricultura - Salvat Editores S. A, 1951.
2 - INFORZATO, R. - O emprego de hormônios no enraizamento de estacas de amoreira. Bragantia 10: 385/387 - 1950.
4 - PIMENTEL GOMES, F. - Curso de Estatística Experimental (2.a edição), 384 pg. + 15 tabelas. 1963.