Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind

Revista Brasileira de Fruticultura

Vanessa de Oliveira Almeida¹  Elvis Lima Vieira²  João Mariano de Oliveira Queiroz²  Ana Cristina Vello Loyola Dantas³ 

[1] ;Instituto Federal de Educação, Ciência e Tecnologia Baiano;Universidade Federal do Recôncavo da Bahia;

关键词: Tamarindus indica;    reguladores vegetais;    produção de muda;   

DOI  :  10.1590/S0100-29452012000100004

来源: DOAJ

【 摘 要 】

Plant growth regulators and biostimulants have been used as an agronomic technique to optimize the production of seedlings in various crops. This study aimed to evaluate the influence of gibberellic acid and the biostimulant Stimulate® on the initial growth of tamarind (Tamarindus indica L.). The experiments were conducted in a nursery with 50% shading, in a randomized block design with five replications and five plants per plot. Thirty eight days after sowing, the leaves were sprayed seven times a day with 0.0 (control), 0.8, 1.6, 2.4 and 3.2 mL of gibberellic acid L-1 aqueous solution and with 0.0 (control), 6.0,12.0, 18.0, and 24.0 mL Stimulate® L-1 aqueous solution. Stem diameter (SD), plant height (PH), longest root length (LRL), shoot dry mass (SDM), root dry mass (RDM) and RDM:SDM ratio were evaluated ninety days after sowing. Variance and regression analysis showed that GA3 at 4% promoted plant growth (height), but had no significant effect on stem diameter, longest root length, shoot and root dry mass and the RDM:SDM ratio. On the other hand, all concentrations of Stimulate® significantly increased plant height and shoot and root dry mass of tamarind seedlings.

【 授权许可】

Unknown