The use of film coating on the performance of treated corn seed

Abstract

-The main objective of seed coating technology using polymers is to improve the physical, physiological and sanitary characteristics of seed performance. The objectives of the present study were to determine: the plantability of corn seeds treated with insecticide, fungicide and graphite, covered with a film coating; the dust retention on treated corn seeds; and the leaching of applied products on corn seeds covered by a film coating. Seed plantability was determined by counting the skips and double seeds; dust was determined by using fiberglass paper in mg.100 g -1 of seeds; and the leaching was determined by collecting the material leached in a 10 cm layer of sand after irrigation. The following conclusions were made: seeds covered with film coating effectively reduce skips and double seeds; film coating effectively reduces the formation of dust from the seeds; film coated seeds minimize the leaching of the insecticide applied in seed treatment; and there are differences in effectiveness related to film coating type and dosage.Index terms: polymer, plantability, dust, leaching.Uso de film coating e desempenho de sementes de milho tratadas RESUMO -A tecnologia do recobrimento de sementes com uso de polímeros tem como principal objetivo melhorar o desempenho de sementes em relação aos atributos físicos, fisiológicos e sanitários. Nesse contexto, os objetivos desse estudo foram determinar: a plantabilidade de sementes de milho tratadas com inseticida, fungicida e grafite, cobertas com film coating; a retenção de poeira em sementes de milho tratadas; e a lixiviação de produtos aplicados em sementes de milho recobertas por film coating. A plantabilidade das sementes foi determinada pela contagem de falhas e duplas. A poeira foi determinada usando papéis de fibra de vidro em mg.100 g -1 de sementes. A lixiviação foi determinada pela coleta de material lixiviado em uma camada de 10 cm de areia após irrigação. As seguintes conclusões foram obtidas: sementes recobertas com film coating reduzem falhas e duplas na semeadura; film coating reduz formação de poeira nas sementes; sementes recobertas por film coating apresentam menores índices de lixiviação de inseticida aplicado no tratamento de sementes; e há diferença em eficiência em relação ao tipo de film coating e na dosagem utilizada.Termos para indexação: polímero, plantabilidade, poeira, lixiviação.

Rice Seed Treatment and Recoating With Polymers: Physiological Quality and Retention of Chemical Products

“…Leaching is prevented to a greater extent by the presence of more organic matter (BROZNIĆ et al, 2012;ROY et al, 2014). Avelar et al (2012) observed that maize seeds coated with the PolySeed CF polymer had five times more efficiency in the retention of Furazin 310 TS® insecticide containing 210 g zinc L -1 , used for the treatment of seeds. Of the insecticides compared to seeds that did not receive polymers, quantified by the amount of zinc extracted in 100 cm 3 of sand after a 50 mm precipitation; however the other polymer used Color Seed C3, was not efficient in the insecticide retention, because the zinc was leached up to twice as much as the treatment with insecticide alone.…”

“…Of the insecticides compared to seeds that did not receive polymers, quantified by the amount of zinc extracted in 100 cm 3 of sand after a 50 mm precipitation; however the other polymer used Color Seed C3, was not efficient in the insecticide retention, because the zinc was leached up to twice as much as the treatment with insecticide alone. The authors (AVELAR et al, 2012) attributed these results to the lack of compatibility and low adhesion of the Color Seed C3 polymer and the insecticide used in the treatment. Similarly in this work, the Florite 1127® polymer (Tables 4 and 5) may have presented incompatibility and lack of adherence to the insecticide thiamethoxam, since it was inefficient in retaining the insecticide with the seeds.…”

“…The use of polymers associated with the chemical treatment of seeds is a promising technique for use in agriculture, promoting better adhesion of the products to the seeds, minimizing the contamination of man and the environment by reducing dust, and preventing the leaching of chemical products (TIWARI et al, 2011;AVELAR et al, 2012;VINODKUMAR et al, 2013;KEAWKHAM et al, 2014;AVELAR et al, 2015). Studies using this association demonstrated that there was no interference in the physiological quality of seeds of several agricultural species, such as cotton (LIMA et al, 2006), maize (BENATTO JUNIOR et al, 2012;AVELAR et al, 2015), and rice (CASTAÑEDA et al, 2014).…”

The Influence of Seed Coating on the Vigor and Early Seedling Growth of Barley

“…Several previous studies have reported satisfactory effects of seed coating on seed germination, seedling growth, root and shoot growth, leaf area, dry biomass and increase in yield (Zelonka et al, 2005;Gevrek et al, 2012;Tavares et al, 2012;Tavares et al, 2013). In addition, seed coating improves plantability, reduces the percentage of skips and doubles, reduces the formation of dust from seed and minimizes the leaching of insecticide from treated seed (Avelar et al, 2012). Accordingly, the objective of this study was to evaluate the effect on the seed quality and seedling performance of barley resulting from seed coating with various combinations of calcium, silicon, polymer and fungicide.…”

Physiological performance of wheat seeds treated with micronutrients and protection products during storage

“…Additionally, the use of zinc has been associated with improvements in seed vigor and germination (Ribeiro and Santos, 1996), once this micronutrient acts as an enzymatic activator in lipids and proteins metabolic pathways (Prado et al, 2007). Furthermore, coat adding a polymer to form a thin layer on the seed surface allows better distribution of active ingredients (Baudet and Peres, 2004), reduce the amount of chemicals used (Karam et al, 2007) and minimize the leaching of these products from treated seeds (Avelar et al, 2012).…”