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

Freiberg, Joice Aline; Ludwig, Marcos Paulo; Avelar, Suemar Alexandre Gonçalves; Girotto, Eduardo; Eickstedt, Darlan de Maria; Rotta, Rafael

doi:10.1590/2317-1545v39n2176874

Cited by 4 publications

(5 citation statements)

References 17 publications

(19 reference statements)

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“…However, the hermetic system provided a higher percentage of normal seedlings, when compared to the conventional system, throughout the storage period. These results are in agreement with those found by Freiberg et al (2017), who observed an increase in the values of the first germination count of wheat seeds up to 120 days of conventional storage, after which the values were also reduced. Harvest delay negatively influenced the first germination count values for both storage systems, corroborating the results observed by Tunes et al (2010a), in barley seeds, with harvest delay.…”

Section: Resultssupporting

confidence: 93%

“…Similar results were obtained by Rupollo et al (2004) and Petrenko (2014), studying oat and wheat seeds, which verified an increase in seed germination during the hermetic storage, with a subsequent reduction in germination at 180 and 360 days of storage, respectively. Freiberg et al (2017) also verified a reduction in the germination percentage of wheat seeds during 240 days under conventional storage.…”

Section: Resultssupporting

confidence: 52%

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Physiological performance of wheat seeds as a function of moisture content at harvest and storage system1

Scariot

Radünz

Dionello

et al. 2017

Pesqui. Agropecu. Trop.

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The physiological performance of wheat seeds may be influenced by the harvest season and storage system. This study aimed at evaluating the physiological performance of wheat seeds as a function of different moisture contents at harvest, with later storage under hermetic and conventional systems. Harvest was performed when the seeds reached moisture contents of 28.6 %, 18.5 % and 12.9 %. Subsequently, they were stored for 240 days, in both systems, at room temperature. The evaluation of seed physiological performance was carried out by germination and vigor tests, shoot length and dry matter of seedlings. The germination of wheat seeds stored under the hermetic system increased up to 180 days of storage, due to the seed dormancy breaking, with a subsequent decrease of the values, while those stored under the conventional system showed a linear decrease of germination throughout the storage. The hermetic system provided an increase in seed vigor up to 120 days of storage and, after this period, there was a reduction of the values. The conventional system promoted a linear reduction of seed vigor throughout the storage, except for the results obtained in the tests of first germination count and germination speed index, which showed an increase up to 60 days of storage. Harvest delay negatively influenced seed germination and vigor, regardless of time and storage system. The combination of harvest anticipation and hermetic storage improves the physiological performance of seeds over time.

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Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 52%

Physiological performance of wheat seeds as a function of moisture content at harvest and storage system1

Scariot

Radünz

Dionello

et al. 2017

Pesqui. Agropecu. Trop.

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“…Environments with temperature and humidity control favor the seed physiological quality, whereas small changes in the moisture content reduce the metabolic activity and the deterioration rate of seeds (Cardoso et al 2012). Contrary to differences observed between the treatments in this study, Freiberg et al (2017) found no effect of treatment on the moisture content of wheat seeds treated with a combination of micronutrients, polymer, fungicide and insecticide, stored for 6 months under uncontrolled conditions of temperature and humidity.…”

Section: Resultscontrasting

confidence: 89%

“…For wheat, Hossen et al (2014) reported higher germination percentages in seeds treated with thiamethoxam and thiamethoxam + carboxin + thiram. Similarly, the seed treatment with carboxin + thiram + thiamethoxam and polymer + carboxin + thiram + thiamethoxam did not compromise the physiological quality of wheat seeds stored for 120 days under uncontrolled conditions of temperature and humidity (Freiberg et al 2017).…”

Section: Resultsmentioning

confidence: 88%

Physiological quality, initial establishment and yield of wheat according to the seed treatment method1

Freiberg

Ludwig

Decarli

et al. 2017

Pesqui. Agropecu. Trop.

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New technologies are being incorporated to the seed treatment process, such as the use of products on industrial scale. This study aimed at evaluating the seed quality of wheat cultivars, as well as the influence of the seed treatment method on the establishment and yield of this crop. Seeds of the cultivars Jadeite 11, Quartzo and Tec Frontale were treated with the Spectro® fungicide (difenoconazole - 200 mL 100 kg-1 of seeds), Cruiser Opti® insecticide (thiamethoxam + lambda-cyhalothrin - 200 mL 100 kg-1 of seeds) and Polifix G4 polymer (100 mL 100 kg-1 of seeds). A completely randomized design, with four replicates, was used. The treatments consisted of industrial treatment, on farm treatment with the same products and control. Germination, first germination count and moisture content tests were carried out immediately after the seed treatment and at 30, 90 and 150 days of storage. Seedling emergence in beds was evaluated at 30, 60 and 120 days of storage. Under a randomized block design, seedling emergence and grain yield were evaluated in the field in two sowing seasons. The conventional or industrial seed treatment methods do not reduce the physiological quality and emergence of high-vigor seeds stored for 150 days, under controlled conditions of temperature and humidity. The conventional or industrial seed treatment with diphenoconazole + thiamethoxam + lambda-cyhalothrin + polymer does not increase the wheat crop plant stand and grain yield.

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“…They pointed out that their active ingredients interacted with the embryo, which resulted in a significant decrease in seed vigor and seed germination percentage, which was not observed in this research with use of the fungicide or with the chitosan coatings with fungicide. Freiberg et al (2017a) reported toxicity in a coating with the polymer 'Colorseed He' mixed with fungicide (Vitavax® Thiram 200 SC) and an insecticide (Thiamethoxam) in wheat seeds in storage at 180 days showing a low percentage of germination and an increase in the number of abnormal seedlings, unlike what was observed in this research. In general, insecticides have greater phytotoxicity than fungicides in soybean stored seeds (Carvalho et al, 2020;Rocha et al, 2020).…”

Section: Storage Of Chitosan Coated Seeds Mixed With Fungicidecontrasting

confidence: 86%

Chitosan coating on bean and maize seeds: release of agrochemical fungicide and post-storage condition

et al. 2021

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Chitosan is a biopolymer obtained from deacetylation of chitin; it has multiple applications in agriculture as an antifungal, soil conditioner, inducer of defense mechanisms, fruits postharvest coating, leaves and seeds, among others. The objective in this research was to evaluate the effect of chitosan coatings mixed with fungicide (dithiocarbamate) on the germination and germination speed of bean and maize seeds in storage and to determine the retention capacity of the fungicide in the coated seeds under different times of imbibition. Two coating treatments at concentrations of 0.1 and 0.5% chitosan in water, two coatings treatments at 0.1 and 0.5% chitosan supplemented with 0.5% fungicide and a coating without chitosan using only 0.5% fungicide in water were used in bean and maize seed; and as control seeds imbibed in distilled water were used; after treatments, germination percentage and germination speed were determined, also fungicide release were determined at 0, 1, 2 and 6 h of imbibition, and the effect of storage time on germination and germination speed was determined at 30, 60, 90, 120, 150 and 180 days of storage at 4 °C and 45% relative humidity. The fungicide release effect was determined by inhibiting Fusarium oxysporum conidia germination. There were no negative effects of coatings on seed germination after storage. The treatment that provided both greater retention of the fungicidal agent and released it gradually, was 0.5% chitosan mixed with fungicide concentration. Chitosan coating seeds mixed with fungicide do not cause negative changes in seed germination or germination rate.

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

Cited by 4 publications

References 17 publications

Physiological performance of wheat seeds as a function of moisture content at harvest and storage system1

Physiological performance of wheat seeds as a function of moisture content at harvest and storage system1

Physiological quality, initial establishment and yield of wheat according to the seed treatment method1

Chitosan coating on bean and maize seeds: release of agrochemical fungicide and post-storage condition

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