Physiological potential of soybean seeds treated in the industry with and without the application of dry powder

Julia Abati,Denis Santiago Costa,Ademir Assis Henning,Cristian Rafael Brzezinski,Fernando Augusto Henning,Claudemir Zucareli

doi:10.1590/2317-1545v40n2190927

Abstract

Abstract: In soybean crops, industrial seed treatment is widely adopted, and it has allowed the development of new technologies, such as the use of dry powders. This work aimed to evaluate the effect of the industrial treatment, with and without the additional application of dry powder, on the physiological potential of soybean seeds. The experimental design was completely randomized, in a 4×2 factorial scheme, with four replications. Four chemical treatments were evaluated: 1) control, 2) carbendazim + thiram + thiamethoxam, 3) carbendazim + thiram, 4) thiamethoxam. Each trial was divided into one group that was treated and the other that remained untreated with the dry powder. The cultivars BRS 360 RR and BRS 284 were used and analyzed separately. The physiological potential of the seeds was determined by the following assessments: germination, first germination count, seedling emergence in sand, seedling total length, shoot length, and root length. Soybean cultivars respond differently to seed chemical treatments, regarding the effects on physiological potential. Using the dry powder results in problems in seed germination speed in the cultivar BRS 284. In the cultivar BRS 360 RR, the use of dry powder associated with thiamethoxam treatment reduces the physiological potential of the seeds.

Highlights

Soybean is a prominent culture in Brazil and worldwide
In the cultivar BRS 360 RR, the analysis of variance showed a significant interaction between the factors studied in the variables germination, first germination count, seedling total length, shoot length, and root length
It was possible to notice the independent effect of the seed chemical treatments on seedling emergence, in the cultivar BRS 360 RR, and the independent effect of the dry powder on the first germination count, in the cultivar BRS 284

Summary

Introduction

It is one of the economic activities that has increased the most in the last decades This can be attributed to several factors, such as the development of technologies that boosted productivity, and made the cultivation in different regions possible (Sediyama et al, 2013; Hirakuri and Lazzarotto, 2014). Among these technologies, seed treatment stands out as an important way of controlling pathogens transmitted by seeds, and of ensuring the establishment of adequate plant populations. It provides a greater protection to the operators, and reduces the contamination of the environment (França-Neto et al, 2015)

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Methods

Results