Physiological quality of soybean seeds treated with imidacloprid before and after storage

Abstract

This study aimed to evaluate the effect of different slurry volume of imidacloprid insecticide on the physiological potential during the storage of seeds of three soybean cultivars. A completely randomised experimental design was adopted, in a 6 × 3 × 2 factorial scheme, which treatments were six slurry volumes with imidacloprid insecticide (0, 200, 500, 800, 1 100 and 1 400 mL/100 kg of seeds), 3 soybean cultivars (SYN15630, M5947, and NS5959) and 2 storage periods (0 and 30 days after seed treatment), with four replications. The treated seeds were stored in kraft paper bags with controlled temperature and humidity. The physiological potential of the seeds was evaluated by standard germination test, electrical conductivity, accelerated aging, seedling emergence in the sand seedbed, and the field. The germination and vigor of soybean seeds were reduced during storage, especially with the increase in the volumes of the insecticide solution.

Effects of Seed Physical Characteristics of Benin Soybean Germplasm on their Resistance to Callosobruchus maculatus Fabricius (Coleoptera: Bruchidae)

“…Farmers to protect stored soybeans from bruchid attacks mainly use synthetic chemical insecticides (Loko et al, 2021). While, the use of synthetic insecticides such as imidacloprid insecticide, not only have undesirable effects on human health, they also reduce the germination capacity (up to 22.6%) of soybean seeds (Pereira et al, 2020). Among the alternative control methods against bruchid pests, the use of resistant varieties is one of the cheapest control methods that seems to be more easily adopted by farmers (Msiska et al, 2018).…”

Potencial fisiológico de sementes de soja submetidas ao tratamento industrial com bioestimulante antes e após armazenamento / Physiological potential of soybean seeds submitted to industrial treatment with biostimulant before and after storage

“…A capacidade de mobilização de reservas, em sementes deterioradas apresentam limitações no processo de reorganização celular. Entretanto, sabe-se que essa característica é fundamental para manutenção da permeabilidade seletiva das membranas evitando, assim a exsudação excessiva de eletrólitos para o exterior das células (Marcos-Filho 2015;Marcos-Filho e França-Neto, 2017), nestas condições o armazenamento bem como o volume de calda potencializam os danos causados às sementes (Pereira et al, 2020;Pereira et al, 2021 Os resultados obtidos concordam com Zambon (2013), para estes autores a realização do tratamento das sementes antes da semeadura minimiza os efeitos fitotóxicos das caldas à germinação e estabelecimento de plântulas.…”

Viability and vigor of soybean seeds as a result of industrial seed treatment and stored in different environments

“…Due to the advantages provided by IST, in the control of pests and pathogens, such as protection and improvement in the initial seedling development, it is justified to investigate the effect of the application, associated or not, of these agrochemicals by means of the referred technique, aiming to check that there is interference in the mode of action of each of them on their respective targets, nor damage to their physiological potential (Soares et al, 2019;R. C. Pereira et al, 2020).…”

“…Considering that the seed storage time can extend for several months, procedures must be established to accommodate the volume received in the best possible conditions (Villela & Menezes, 2014). To work around this problem, in some cases seed producing and processing companies concentrate the treatment operation a few weeks before dispatch to the producer, because they are concerned about the harmful effects of the products about the quality of the seeds during storage (R. C. Pereira et al, 2020). However, it would facilitate logistics if this process was carried out in advance, with later storage, but for this it is necessary to know the influence of the agrochemicals used on the physiological quality of the seed during the storage time (L. G. M. Dan et al, 2010;L.…”