scholarly journals Compatibility of Azospirillum brasilense with fungicide and insecticide and its effects on the physiological quality of wheat seeds

2018 ◽  
Vol 39 (2) ◽  
pp. 855 ◽  
Author(s):  
Janete Denardi Munareto ◽  
Thomas Newton Martin ◽  
Tania Maria Müller ◽  
Ubirajara Russi Nunes ◽  
Guilherme Bergeijer da Rosa ◽  
...  
Keyword(s):  
Azospirillum Brasilense ◽  
Seed Treatment ◽  
Accelerated Aging ◽  
Triticum Aestivum L ◽  
Wheat Cultivars ◽  
Pests And Diseases ◽  
Physiological Quality ◽  
Growth Promoting ◽  
Germination Vigor

Seed treatment is a practice that helps the initial establishment of the crop without the effects caused by pests and diseases. The association of diazotrophic bacteria with grasses has been used in the supply of nitrogen to plants; however, these microorganisms produce growth-promoting substances, which promote benefits in the growth and development of the crops. Thus, the objective of this study was to evaluate the compatibility of Azospirillum brasilense associated with the fungicide difenoconazole and the insecticide thiamethoxam by observing the effects on the quality of seed emergence of three wheat cultivars (Triticum aestivum L.). Three wheat cultivars, arranged in a 4 x 2 factorial system with four replicates, were tested. The treatments were the control; difenoconazole (Spectro® at a dose of 150 mL per 100 kg of seed); thiamethoxam (Cruiser® FS 350 at a dose of 200 mL per 100 kg seed) and difenoconazole + thiamethoxam, applied on wheat cultivars TBIO Mestre, TBIO Itaipu and TBIO Sinuelo. Bacteria from the Azospirillum genus were used in the inoculation. The wheat seed retains its quality when it checks the germination, vigor and independent accelerated aging, whether or not fungicide, insecticide and A. brasilense were used. The insecticide thiamethoxam increased the length of shoots and roots and provided compatibility with A. brasilense, and fungicide inhibited the length of shoots and roots and was antagonistic to the bacterium A. brasilense.

scholarly journals Treatment with insecticide and fungicide on the physiological quality of lentil seeds

2023 ◽  
Vol 83 ◽  
Author(s):  
J. Rubert ◽  
S. H. B. Dornelles ◽  
U. R. Nunes ◽  
N. T. Pedrollo ◽  
M. Peripolli ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Accelerated Aging ◽  
Lower Number ◽  
Thiophanate Methyl ◽  
Pests And Diseases ◽  
Randomized Design ◽  
Physiological Properties ◽  
Physiological Quality ◽  
Completely Randomized Design

Abstract The low Brazilian productive index and the high demand have aroused interest in the cultivation of lentils, however the legume is little known and needs further studies. The objective of this study was to analyze and identify the effects of treatments with insecticides and fungicides on the physiological quality of lentil seeds, CA-1512 strain. The experiments were conducted in the seed laboratory in a completely randomized design with seven treatments and four replicates. Seed treatment with Thiophanate-methyl; Fluazinam® (180 ml) + Pyraclostrobin; Thiophanate-methyl; Fipronil® (150 ml) promoted higher levels of germination under accelerated aging, lower number of abnormal seedlings and longer lengths of shoot and radicle for the emergence in paper. Treatment with Carboxin; Thiram® (250 ml) + Imidacloprid® (150 ml) allowed a higher value in the first count of germination in sand, lower number of dead seeds under accelerated aging and longer root length, in the emergence in sand. Shoot length in the emergence in sand increased after seed treatment with Metalaxyl-M; Fludioxonil® (75 ml) + Pyraclostrobin; Thiophanate-methyl; Fipronil® (150 ml). Treatments with fungicides and insecticides considerably improved the physiological properties of the seeds, thus being able to guarantee greater phytosanitary qualities in the field, generating healthier seedlings and with protection against possible pests and diseases, and consequently guaranteeing greater productivity.

scholarly journals Foliar application of silicon and the effect on wheat seed yield and quality

2013 ◽  
Vol 35 (1) ◽  
pp. 86-91 ◽  
Author(s):  
Samantha Rigo Segalin ◽  
Caroline Huth ◽  
Thais D'Avila Rosa ◽  
Diógenes Barella Pahins ◽  
Liliane Marcia Mertz ◽  
...  
Keyword(s):  
Seed Yield ◽  
Foliar Application ◽  
Accelerated Aging ◽  
Dry Weight ◽  
Wheat Cultivars ◽  
Wheat Seed ◽  
Germination Test ◽  
Yield And Quality ◽  
Physiological Quality

Adequate nutrients for plants are important for increasing the yield and quality of the seeds produced. The objective of this study was to evaluate foliar fertilization with silicon in wheat and its effect on seed yield and physiological quality. Treatments consisted of two silicon dosages (three and six liters silicon per hectare) and the control (no silicon) and five wheat cultivars: OR "Quartzo", OR "Ônix", Fundacep "Linhagem", Fundacep "Campo Real" and Fundacep "Horizonte". The experimental design was randomized blocks with four replications. After physiological maturity, harvesting and threshing of the seeds were done manually. Seed samples were evaluated for yield and physiological quality from the germination test, first germination count, seedling dry weight, accelerated aging, electrical conductivity, 1000 seeds and hectoliter weights. The results showed that the foliar application of silicon at the dosages tested did not affect the yield and physiological quality of the seeds produced by the wheat cultivars.

scholarly journals Treatment with fungicides and insecticides on the physiological quality and health of wheat seeds

2014 ◽  
Vol 36 (4) ◽  
pp. 392-398 ◽  
Author(s):  
Julia Abati ◽  
Claudemir Zucareli ◽  
José Salvador Simoneti Foloni ◽  
Fernando Augusto Henning ◽  
Cristian Rafael Brzezinski ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Dry Weight ◽  
Test Method ◽  
Wheat Cultivars ◽  
Chemical Treatments ◽  
Seed Health ◽  
Health Quality ◽  
Physiological Quality

Seed treatment with insecticides and fungicides has become an important practice for ensuring initial plant stand in establishing crops. In this context, the aim of this study was to evaluate the influence of chemical seed treatment with insecticides and fungicides on the physiological quality and health of the seeds of wheat cultivars. Seeds of the wheat cultivars BRS Pardela and BRS Gaivota were used, subjected to the following chemical treatments: 1- control, 2- carboxin + thiram + imidacloprid + thiodicarb, 3- carbendazim + thiram + imidacloprid + thiodicarb, 4- fipronil + thiophanate-methyl + pyraclostrobin, 5- triadimenol + imidacloprid + thiodicarb, 6- fipronil, and 7- imidacloprid + thiodicarb. Physiological quality was evaluated by tests of germination, accelerated aging, the length and dry weight of shoots and roots, and seedling emergence in the field. Seed health quality was evaluated by the blotter test method. The seeds of the wheat cultivars tested respond differently to the chemical treatments in regard to effects on germination and vigor. The treatment with triadimenol + imidacloprid + thiodicarb is harmful to seedling development. For the BRS Gaivota cultivar, the seed treatment with carboxin + thiram + imidacloprid + thiodicarb; and carbendazim + thiram + imidacloprid + thiodicarb improved seedling establishment in the field compared to the control.

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

2017 ◽  
Vol 39 (2) ◽  
pp. 182-188 ◽  
Author(s):  
Joice Aline Freiberg ◽  
Marcos Paulo Ludwig ◽  
Suemar Alexandre Gonçalves Avelar ◽  
Eduardo Girotto ◽  
Darlan de Maria Eickstedt ◽  
...  
Keyword(s):  
Moisture Content ◽  
Seed Treatment ◽  
Storage Time ◽  
Accelerated Aging ◽  
High Quality ◽  
Physiological Performance ◽  
Physiological Quality ◽  
Wheat Seeds

Abstract: Seeds with high quality are one of the important factors to consider in the crops establishment on field. Therefore, the physical and physiological quality of wheat seeds treated with mixes of micronutrients including zinc and protective products were aimed. The wheat seeds were analyzed in a factorial scheme 5x3x4, with five storage time: 0, 60, 120, 180 and 240 days; three micronutrients: micronutrients 1 (1% Mn; 0.1% Mo; 10% Zn); micronutrients 2 (0.3% B; 0.3% Co; 3% Zn) and no micronutrients, and four protective products: untreated seeds, polymer (Colorseed He), fungicide carboxin + thiram (Vitavax® Thiram 200 SC) + insecticide thiamethoxam (Cruiser® 350 FS) and polymer + fungicide + insecticide. After treatment, the seeds were stored under uncontrolled conditions for 240 days and at intervals of 60 days, the germination, accelerated aging and moisture content were determined. Wheat seeds untreated and treated with polymer have the best physiological performance during storage, regardless micronutrients treatments. The wheat seeds treated with carboxin + thiram + thiamethoxam and polymer + carboxin + thiram + thiamethoxam can be storage up to 120 days, under uncontrolled conditions, regardless micronutrients treatments. The seed treatment does not alter the moisture content of wheat seeds.

scholarly journals Chemical treatment and size of corn seed on physiological and sanitary quality during storage

2020 ◽  
Vol 42 ◽  
Author(s):  
Karen Marcelle de Jesus Silva ◽  
Renzo Garcia Von Pinho ◽  
Édila Vilela de Resende Von Pinho ◽  
Renato Mendes de Oliveira ◽  
Heloísa Oliveira dos Santos ◽  
...  
Keyword(s):  
Chemical Treatment ◽  
Seed Treatment ◽  
Standard Treatment ◽  
Accelerated Aging ◽  
Cold Test ◽  
Corn Seed ◽  
Pirimiphos Methyl ◽  
Physiological Quality ◽  
Effect Of Treatment

Abstract: The aim of this study was to investigate the effect of treatment with insecticides and fungicides on the physiological quality of corn seeds, classified in sizes, in different periods of storage. Seeds of the hybrid BM915 PRO, classified in two sizes (CH20/64 and CH24/64), were treated with a mixture of carbendazim + thiram (Derosal Plus®), pirimiphos methyl (Actellic®), deltamethrin (K-obiol®), and water (standard treatment). In addition to the standard treatment adopted by the company, treatments with clothianidin (Poncho®), thiamethoxam (Cruizer®), and fipronil (Shelter®) were added to the spray mixture. The seeds were stored in a non-climate-controlled environment in multi-ply paper packages. The physiological quality of the seeds was evaluated every ninety days over a period of 270 days by the germination test, cold test, and accelerated aging. Sanitary quality was also evaluated through the Blotter test. The physiological quality of seeds of the hybrid BM915 PRO is maintained up to ninety days of storage, regardless of the chemical treatment used and the size of the seeds. The addition of the insecticide to the standard treatment used in chemical seed treatment does not affect the action of the fungicides on the fungi in the seeds.

scholarly journals Residual effect of bur gherkin seed treatment with biostimulant under salt stress

2016 ◽  
Vol 38 (3) ◽  
pp. 219-226 ◽  
Author(s):  
Maria Lilia de Souza Neta ◽  
Francisco de Assis de Oliveira ◽  
Salvador Barros Torres ◽  
Antonia Adailha Torres Souza ◽  
Sara Monaliza Costa Carvalho ◽  
...  
Keyword(s):  
Salt Stress ◽  
Agricultural Production ◽  
Seed Treatment ◽  
Accelerated Aging ◽  
Residual Effect ◽  
Dry Mass ◽  
Beneficial Effects ◽  
Physiological Quality ◽  
Previously Treated

Abstract: The physiological quality of seeds used in agricultural production is one of the main factors that should be considered when implanting the culture. This study aimed at evaluating the quality of bur gherkin seeds, cv. Liso de Calcutá, coming from plants grown from seeds that were previously treated with biostimulant (0, 5, 10, 15 and 20 mL. kg-1 seeds) and cultivated in two irrigation water salinities (0.5 and 3.5 dS. m-1). Initially, the water content of seeds was determined and the following tests were performed: germination, accelerated aging, greenhouse emergence, emergence speed index, height and dry mass of seedling aerial part. It was found that the physiological quality of bur gherkin seeds coming from plants that were subjected to salt stress is negatively affected, and that the use of biostimulant, applied via seeds, provides beneficial effects on the physiological quality of seeds produced in the next generation.

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

2020 ◽  
Vol 66 (No. 10) ◽  
pp. 513-518
Author(s):  
Renata Cristiane Pereira ◽  
Murilo Fuentes Pelloso ◽  
Larissa Vinis Correia ◽  
Thaisa Cavalieri Matera ◽  
Rayssa Fernanda dos Santos ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Seed Treatment ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Germination Test ◽  
Soybean Cultivars ◽  
Before And After ◽  
Physiological Quality

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.  

scholarly journals Qualidade fisiológica de sementes de soja tratadas e armazenadas - Physiological quality of treated and stored soybean seeds.

2017 ◽  
Vol 4 (1) ◽  
pp. 50 ◽  
Author(s):  
Gustavo Cruvinel Rocha ◽  
Aurélio Rubio Neto ◽  
Sihélio Júlio Silva Cruz ◽  
Gabriela Wilk Baião Campos ◽  
Alan Carlos de Oliveira Castro ◽  
...  
Keyword(s):  
Glycine Max ◽  
Accelerated Aging ◽  
Storage Conditions ◽  
Soybean Seeds ◽  
Chemical Treatments ◽  
Physiological Quality ◽  
Germination Vigor ◽  
Processing And Storage ◽  
The University

ResumoDurante o armazenamento as sementes ou grãos podem sofrer alterações em sua composição química, em razão do ambiente de estocagem. Diante disto, a produção de sementes de alta qualidade fisiológica dependerá do somatório de todos os atributos genéticos, físicos, fisiológicos e sanitários. Entretanto, pouco se sabe sobre os efeitos nas sementes por meio da operação de colheita, secagem beneficiamento e armazenamento por longos períodos de tempo. Por isso, foi conduzido no laboratório de sementes da Universidade de Rio Verde, este estudo com o objetivo de avaliar a qualidade fisiológica de sementes tratadas sob diferentes condições de armazenamentos. O delineamento experimental utilizado foi o inteiramente casualizado 2x5x7, sendo duas condições de armazenagem (armazém convencional e climatizado), cinco tratamentos de sementes e sete épocas de avaliação, com quatro repetições. Aos 0, 20, 40, 60, 80, 100, 120 dias após a imposição dos tratamentos foram avaliadas germinação, índice de velocidade de emergência, envelhecimento acelerado e comprimento de raiz. Os tratamentos químicos aplicados nas sementes de soja (cultivar M 7739 IPRO) reduziram o vigor das sementes.Palavras-Chave: Glycine max, germinação, vigor.AbstractDuring storage as seeds or grains may suffer in their chemical composition, because of the storage environment. In view of this, a production of high quality physiological seeds will depend on the sum of all genetic, physical, physiological and sanitary attributes. However, little is known about the effects of seeds by harvesting, drying, processing and storage for long periods of time. Therefore, it was conducted in the seed laboratory of the University of Rio Verde, in order to evaluate a physiological quality of seeds treated under different storage conditions. The experimental design was used for the completely randomized 2x5x7, two storage conditions (conventional and air conditioned warehouse), five seed treatments and seven evaluation periods, with four replications. At 0, 20, 40, 60, 80, 100, 120 days after an imposition of treatments for evaluated germination, emergence speed index, accelerated aging and root length. The chemical treatments applied in soybean seeds (cultivar M 7739 IPRO) reduced seed vigor.Keywords: Glycine max, germination, vigor.

scholarly journals GERMINATION AND VIGOR OF INDUSTRIALLY TREATED MAIZE SEEDS

2019 ◽  
Vol 3 (1) ◽  
pp. 59-70
Author(s):  
Raianny Dos Reis Teixeira ◽  
Joseanny Cardoso Da Silva Pereira
Keyword(s):  
Seed Treatment ◽  
Storage Time ◽  
Detrimental Effect ◽  
Accelerated Aging ◽  
Storage Period ◽  
Maize Seeds ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality ◽  
Germination Vigor

The industrial seed treatment combines the application of insecticides, fungicides, nematicides, micronutrients and other products. However, seed submission to the combination of several products can cause phytotoxicity, resulting in reduced viability and vigor, which is directly proportional to the increase in the storage period of the material. Thus, the objective was to determine the vigor of corn seeds and the percentage of germination in substrates when submitted to two types of industrial treatment as a function of storage time. The experimental design was a completely randomized, 2 x 2 x 2 factorial design (two treatments, two times and two substrates / two vigor tests / two emergency tests) for the germination, vigor and emergency tests. Hybrid corn seeds were treated with two types of industrial treatments: TSI3 (combination of three products - K-Obiol 25 CE, Actellic 500 CE, Maxim Advanced) and TSI4 (combination of four products - K-Obiol 25 CE, Actellic 500 CE, Maxim Advanced, Cruiser 350 FS). The analyzed variables were: germination, vigor and emergence. In the germination test, it was verified that, when vermiculite was added, there was a higher percentage of germination in corn seeds. When added thiametoxan, the combination of products in the treatment of corn seeds had a detrimental effect on their physiological quality, reducing germination and vigor. The industrially treated corn seeds showed a reduction in vigor when submitted to the accelerated aging test after the prolongation of the storage period.

scholarly journals Genetic diversity for physiological quality of seeds from corn (Zea mays L.) intervarietal crossbreeds

2013 ◽  
Vol 35 (4) ◽  
pp. 449-456 ◽  
Author(s):  
Daniele Nerling ◽  
Cileide Maria Medeiros Coelho ◽  
Rubens Onofre Nodari
Keyword(s):  
Genetic Diversity ◽  
Zea Mays L ◽  
Accelerated Aging ◽  
Genetic Contribution ◽  
Percentage Germination ◽  
Canonical Variables ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality

The physiological quality is based on the genotype and may be accompanied since the first stages of selection through the study of genetic diversity. The purpose of this study was to evaluate the parental genetic contribution in the seed physiological quality in corn intervarietal crossbreeds. The intervarietal crossbreeds were performed using landraces genotypes, open pollinated varieties and commercial hybrids. The seeds obtained from the crossbreed, their equivalents and parentals were evaluated regarding their water percentage, germination, germination speed rate, accelerated aging, field emergence and electrical conductivity. The seeds obtained in the crossbreed are viable and vivid with heterosis when compared with the parentals. The accelerated aging test was more effective for selecting the strongest genotypes. The canonical variables were useful to group the genotypes that presented similar physiological characteristics. The genotypes MPA 01 x Pixurum 05, MPA 01 x AS1565, MPA 01 x SJC5886, SJC5886 x Pixurum 05 and Fundacep 35 x SCS 154 Fortuna were the best crossbreeds regarding the production of better physiological quality seeds.

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