Crescimento e acúmulo de nutrientes pela sacha-inchi em latossolo da Amazônia Central

Abstract

Sacha-inchi is an Amazonian oleaginous plant rich in oil, omega 3, 6 and 9. In addition, it has potential for the pharmaceutical and cosmetic industry. The objective of this work was to investigate the vegetative and reproductive phenophases and the lyotrophic series. The Experimental Design Entirely Random. The treatments were 15 evaluation periods: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280 e 300 days after emergence. Four replicates were used, 2 plants per repetition and the experimental unit was a vase of 13 dm3 per plant. Plant growth variables were evaluated; morphophysiological variables and nutrient accumulation. To verify the normality of the data, the Shapiro-Wilk test was used (p> 0.05) and homogeneity of variances by the Levene test (p<0.05). The results showed that the vegetative phenophase cycle of sacha-inchi is 77 days and reproductive phenophase cycle is 78 days or 136 days after emergence. In the vegetative phenophase, the elements with the highest accumulation were N>K>Ca>Mg>P>Fe>Zn>Mn and Cu showing growing behavior in the plant and the highest accumulated value found in the leaves. In the reproductive phenophase, the most accumulated elements followed the order K>N>Ca>Mg>P>Fe>Zn>Mn and Cu.