Abstract

YUMBLA ORBES, Maria; STAHRINGER, Nicolás Ignacio  and  BARBOSA, José Geraldo. Influencia de diferentes sistemas de cultivo en la calidad del tallo y las características de macronutrientes en Solidago canadensis. Siembra [online]. 2017, vol.4, n.1, pp.39-50. ISSN 2477-8850.  https://doi.org/10.29166/siembra.v4i1.301.

Goldenrod cultivation is relatively new in Brazil, so that there is lack of knowledge regarding the proper cultural practices required to increase its production efficiency. Aspects such as pruning, cultivation systems and nutrient demand are not well known for this species. The objectives of this study were to determine how different cultivation systems can affect: (1) yield and quality of goldenrod stems, (2) total plant dry weight and macronutrient accumulation throughout the lifecycle of the crop, and (3) leaf macronutrient concentration during the lifecycle. A nutrient solution containing macro and micronutrients was used to fertirrigate this floriculture crop over the entire lifecycle. Pinching was made five days after transplanting (DAT). Initially, no significant differences were observed in shoot length. However, at 75 and 90 DAT, plants with one stem were longer. Increasing macronutrient accumulation was observed during the lifecycle. Nutrient accumulation had the following order: K > N > Ca > Mg > S > P. The three cultivation systems produced goldenrod stems with lengths and fresh weight that met commercial standards. Total dry weight was statistically the same in plants grown with one, two and three stems. Goldenrod plants should be conducted with three stems since this system does not interfere with the concentration and accumulation of macronutrients, and allows producing a greater number of stems per plant without losing the stem quality.

Keywords : pinching; nutrient uptake; floriculture; goldenrod; Brazil.

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