Effect of silicon and humic substances on the productivity and absorption of minerals in cucumber

Objective: This work is to evaluate the effect of potassium silicate and humic substances to mitigate salt stress in cucumber grown in greenhouse. Design/methodology/approach: The design that was used was a completely randomized with factorial arrangement. The first factor is the varieties of cucumber (Var); Induran (I) and SV2516 (SV), the second factor is potassium silicate (Si) with doses 0, 10, 20 mL·L-1 and the third factor is humic substances (SH) with doses 0, 10, 20 kg / ha. Results: The results showed that the best interaction was SV * SH20 for the NFP and Rend variables. In the fruit content of N and Ca it was I * SH10 and in K and P it was SV * Si20, for the rest of the minerals such as Mg, Fe and Cu the interactions that stood out were SV * Si10, SV * Si20 and I * Si10 respectively. The best interaction in sheet mineral content was I * SH20 in N, SV * SH10 for P and K, and SV * Si20 for Cu. Study limitations/implications: There was no significant difference in Ca, Mg and Fe minerals in leaf. Findings/conclusions: At least one of the interactions of cultivars and doses of biostimulants favored agronomic variables, quality and mineral absorption in fruit. Key words:  Salt stress, humic substances, potassium silicate.O Objective: To evaluate the effect of potassium silicate and humic substances in the mitigation of salt stress in cucumber grown in a greenhouse. Design/Methodology/Approach: A completely randomized design with factorial arrangement was used. The first factor was the cucumber varieties (Var): Induran (I) and SV2516 (SV). The second factor was potassium silicate (Si), with doses of 0, 10, and 20 mL·L-1. The third factor was humic substances (SH), with doses of 0, 10, and 20 kg/ha. Results: The best interaction for the NFP and Y variables was SV*SH20. The N and Ca content in the fruit was I*SH10, while the K and P content was SV*Si20. Meanwhile, Mg, Fe, and Cu interactions stood out with SV*Si10, SV*Si20, and I*Si10, respectively. The best interaction in leaf mineral content was I*SH20 (N), SV*SH10 (P and K), and SV*Si20 (Cu). Study Limitations/Implications: There was no significant difference in Ca, Mg, and Fe in leaf. Findings/Conclusions: At least one of the interactions between cultivars and bio stimulant doses favored agronomic traits, quality, and mineral absorption in fruit