Característica agronômica e parâmetros bioquímicos de milho vpa tratados com preparados homeopáticos

Abstract

Corn (Zea mays L.) is a very important and versatile cereal. Among its many applications, it can be used in human and animal food, raw material for industries, ethanol production, among other features. This culture also represents great importance in the socioeconomic scope of our country. Some studies have presented different answers about homeopathic preparations in agriculture, as their use can trigger inhibitory and/or stimulatory effects, and can act as resistance inducers, influence the germination rate, plant growth and development, among others. Thus, the present work aimed to compare physiological and biochemical parameters of two maize varieties (VPA) SCS 154 Fortuna and SCS 155 Catarina. Where, 24 hours before cultivation, the seeds were immersed in different containers containing a solution of 20mL of distilled water and 8 drops of the homeopathic preparation Lycopodium clavatum 200CH, isotherapeutic of Spodoptera frugiperda 9CH and distilled water as control, respectively. Ten days after plant emergence, weekly, until the vegetative stage up to V5, a solution containing 40mL of distilled water and 8 drops of Spodoptera frugiperda 9CH isotherapeutic was applied to the soil, except for the controls. The medicine Lycopodium clavatum 200CH was purchased from a specialized pharmacy. Spodoptera frugiperda nosode, on the other hand, was prepared from the mother tincture and dynamized up to 9CH. The experiment had 6 treatments and 5 replications, being organized in a completely randomized design-DIC and in a 2x3 factorial arrangement. The seed variety factor had SCS 154 Fortuna and SCS 155 Catarina. And the treatment factor, with the homeopathic preparations of Lycopodium clavatum 200CH, Spodoptera frugiperda 9CH and the control. The data obtained were submitted to analysis of variance and the means were compared by the Tukey test (p<0.05), using the Statistica 12.0 software. In the results, there was a significant difference in the maize plants variety Catarina, treated with Spodoptera frugiperda 9CH, both in the seeds and in the vegetative stages in the activity of the (POD) of shoot, when compared to the other treatments. There were no statistically significant differences in stem diameter or protein content (mg/mL) in any of the treatments analyzed. Thus, it was concluded that the treatments with the homeopathic preparations contributed to the increase of the enzymatic activity of the shoot, indicating a possible protective effect of the defense system of these plants with the use of the homeopathic preparations.