Pilar de Araújo Pacheco
Abstract:
Biostimulants are substances capable of modulating diverse events in plant physiology, as well as fungicides and their phytotonic effect on plant metabolism have shown promising results regarding productivity. The objective of the present work was to evaluate the effect of biostimulants associated with fungicides and safeners on soybean agronomic performance. Consisting of three trials, all with eight treatments and four replications each with randomized block design. These three trials received the same treatment arrangement: the control received no treatment; treatment 1 (T1) consisted only of biostimulant + fungicide seed treatment in stages V4 and R0; Treatment 2 consisted of (T1) + biostimulant and leaf fertilizer in V4; treatment 3 consisted of (T2) + leaf protector in V4; treatment 4 (T4) consisted of T3 + biostimulant and foliar fertilizer at stage R0; treatment 5 used the same arrangement as T4 and added leaf protector in R0; in treatment 6 the arrangement of T5 + K-based leaf fertilizer at stage R0 was repeated; and in treatment 7: T6 + K-based foliar fertilizer at stage R3 was used. The first trial evaluated the application of phytoprotective amino acids from seaweed extracts in soybean crop where it was concluded that applications in stages R0 and R3 showed no significant difference, while applications in stage V4 promoted increments in the mass of one thousand characters. grain, number of internodes, number of grains per pod and number of grains per plant, and yield. The second test evaluated the response of soybean grown under application of biostimulants derived from algae extracts, where it was found significance only for the variable mass of one thousand grains under biostimulant applications in V4. And the third test aimed to evaluate the response of soybean cultivated under application of naphthalene acetic acid (ANA), macro and chelated microelements where it was found that conjugate applications in R0 promoted higher values for plant height, yield and weight one thousand grains.
