Physiological and Sanitary Qualities of Maize Landrace Seeds Stored Under Two Conditions

Muniz, Marlove Fátima Brião; Nunes, Ubirajara Russi; Dutra, Cláudia Braga; Somavilla, Iana

doi:10.1590/s1413-70542015000400004

Cited by 9 publications

(8 citation statements)

References 4 publications

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“…et al 2013, Tonin et al 2014. In addition, it is assumed that fungi seed contamination occurred, which allowed the degradation, as the increase in optimal conditions for microorganisms' development favors the seeds degradation (Stefanello et al 2015). For storage periods general average was observed that the control was the most affected, which resulted in a decrease of 1.70, 9.27 and 8.84%, when compared with treatments involving thiamethoxam, metalaxyl + fludioxonil + thiabendazole and pyraclostrobin + thiophanate-methyl + fipronil, respectively (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Chemical treatment and storage period influence on physiological characteristics of maize seeds

Frandoloso¹,

Galon²,

Menegat³

et al. 2018

Commun. Plant Sci.

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The seeds physiological quality is a fundamental characteristic to obtain competitive and productive plants, where seeds treatment is an important tool to keep seeds physiological high-quality. The present study aimed to evaluate chemical treatments and storage period influence on seeds physiological quality. It was used a factorial (4 x12) randomized complete block design, with eight replications. In factor A, the chemicals (thiamethoxam, metalaxyl + fludioxonil + thiabendazole and pyraclostrobin + thiophanate-methyl + fipronil) and control. In the factor B, the treated seeds storage periods (0, 3, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 90 days). The variables evaluated were vigor and germination, and the tests were performed at p≤0.05. The results indicate that the maize seeds vigor is maintained with the fungicide application, regardless of the vigor test used. As the treated seeds storage period increases, their vigor was reduced by the first count test. However, maize seeds germination was not influenced by seed treatment or storage period. Highlighted Conclusions 1) The maize seeds vigor is maintained applying fungicides, regardless of the vigor test used. 2) The first count test indicates that the longer the untreated or treated maize seeds with thiamethoxam are stored the lower the seed vigor. 3) Maize seeds germination is not influenced by the thiamethoxam, metalaxyl + fludioxonil + thiabendazole and pyraclostrobin + thiophanate-methyl + fipronil chemicals, not even by the storage period up to 90 days of treated seeds.

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Section: Resultsmentioning

confidence: 99%

Chemical treatment and storage period influence on physiological characteristics of maize seeds

Frandoloso¹,

Galon²,

Menegat³

et al. 2018

Commun. Plant Sci.

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“…This fact resulted from the high moisture content of the material, which initially favored the development of the microflora, providing conditions for the development of Aspergillus sp. fungi, since corn grains stored with high moisture contents, above 20%, facilitated the development of the microorganisms associated with them, because their respiratory activity promotes significant increases in parameters favorable to such increment, such as moisture content and temperature (Coradi et al, 2015;Stefanello et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…As the respiration, the fungi and their infestation also collaborate in the loss of dry matter, since they interfere with the deterioration level of the product, using their reserves, such as proteins, carbohydrates and lipids, for development, making it more susceptible to oscillations of temperature and relative humidity, determinant factors conditioning the respiratory intensity (Coradi et al, 2015;Stefanello et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Quality of second-crop corn according to the period between harvest and drying

Andrade

Goneli

Filho

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective of this study was to evaluate the quality of second-crop corn harvested with different moisture contents as a function of time before drying. The corn grains were harvested with moisture content of 28.5, 22.4, 21 and 19%, and submitted to a temporary storage for ten days, simulating the time between harvesting and drying. Quality was subsequently evaluated every two days, based on the commercial classification of the grains, sanity test and dry bulk density. The results showed that: the increase in moisture content at harvest affects the physical and sanitary quality of second-crop corn, and this effect is aggravated over time; the moisture content of 19% is the one that least affects grain quality during the ten days of temporary storage.Qualidade do milho segunda safra em função do tempo entre a colheita e a secagem R E S U M O O presente trabalho foi realizado com o objetivo de avaliar a qualidade do milho segunda safra colhido com diferentes teores de água em função do tempo até a secagem. Os grãos de milho foram colhidos com teores de água de aproximadamente 28,5; 22,4; 21 e 19%, e submetidos a um armazenamento temporário durante dez dias, simulando o tempo entre a colheita e a secagem. A qualidade foi avaliada por meio da classificação comercial dos grãos, do teste de sanidade e da massa específica aparente de matéria seca a cada dois dias subsequentes. Com base nos resultados obtidos, conclui-se que: o aumento do teor de água de colheita influencia negativamente a qualidade física e sanitária do milho produzido na segunda safra, sendo este efeito agravado com o tempo; o teor de água de colheita de 19% é o que menos afeta a qualidade dos grãos durante os dez dias de armazenamento temporário.

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“…However, for the vomitoxin, zearalenone, and fumonisin mycotoxins, the correlation was negative, 20-21%) and are generally observed immediately after harvest, whereas aflatoxigenic fungi of the genus Aspergillus require a moisture content of 13-18% and are common in stored corn (Stefanello et al, 2015). The average moisture content of the sampled grains was 14.2%.…”

Section: Severidade De Lesões De Língua Em Frangos De Corte Associadamentioning

confidence: 96%

Association of the severity of tongue lesions in broiler chickens with the quality of corn in feed

Vaccari

Duarte

Rodrigues

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to determine the correlation of the physical attributes of corn and the mycotoxins present in its grains with the severity of tongue lesions in broiler breeder roosters. The occurrence of the aflatoxin, vomitoxin, zearalenone, T-2 toxin, and fumonisin mycotoxins was detected in the corn grains used in the feed formulation for breeder chickens. The percentages of moisture and broken grains were positively correlated (Pearson's correlation) with the presence of aflatoxin. Milder lesions (grade 1) are positively correlated with aflatoxin and negatively correlated with fumonisin, and the most severe lesions (grade 3) are positively correlated with vomitoxin, fumonisin, and T-2 toxin.

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Physiological and Sanitary Qualities of Maize Landrace Seeds Stored Under Two Conditions

Cited by 9 publications

References 4 publications

Chemical treatment and storage period influence on physiological characteristics of maize seeds

Chemical treatment and storage period influence on physiological characteristics of maize seeds

Quality of second-crop corn according to the period between harvest and drying

Association of the severity of tongue lesions in broiler chickens with the quality of corn in feed

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