@article{Santos_Cairo_Barbosa_Lacerda_Mafra Neto_Macedo_2019, title={Respostas fisiológicas de plantas jovens de <i>Eucalyptus urophylla</i> tratadas com bioestimulante sob deficit hídrico}, volume={29}, url={https://periodicos.ufsm.br/cienciaflorestal/article/view/26206}, DOI={10.5902/1980509826206}, abstractNote={&lt;span lang=&quot;EN&quot;&gt;Biostimulants consist of a mixture of growth regulators that, when they are sprayed on plants, act on hormonal balance, enhancing its development. Stimulate® is a biostimulant composed by indole butyric acid (0.005%), kinetin (0.009%) and gibberellic acid (0.005%) which promotes root growth, improves water and nutrients uptake, and helps restore plant hormonal balance. This research was based on the hypothesis that Stimulate® spraying can be an alternate way to mitigate negative effects of soil water-limiting on plant growth. The experimental work was performed in greenhouse and aimed to evaluate physiological responses of young plants of &lt;em&gt;Eucalyptus urophylla&lt;/em&gt; sprayed with different Stimulate® concentrations and submitted to the following irrigation regimes: full, partial and no irrigation. Leaf water potential, relative water content, net photosynthesis, plant height and main root length were measured. Under water-limited conditions, plants sprayed with Stimulate® showed higher net photosynthesis and relative water content had a less decrease, due to osmotic adjustment. Spraying with Stimulate® also provided greater plant height and longer main root length in plants under water deficit. We conclude that the use of Stimulate® can be a viable option to mitigate negative water stress physiological effects in young plants of &lt;em&gt;Eucalyptus urophylla&lt;/em&gt;, helping to partially maintain the plant growth under water-limited conditions.&lt;/span&gt;}, number={3}, journal={Ciência Florestal}, author={Santos, Rayka Kristian Alves and Cairo, Paulo Araquém Ramos and Barbosa, Romário Pereira and Lacerda, Janderson de Jesus and Mafra Neto, Caio da Silva and Macedo, Theilon Henrique de Jesus}, year={2019}, month={set.}, pages={1072–1081} }