Termoterapia e qualidade fisiológica e sanitária de sementes armazenadas de pinhão-manso

Schneider, Claércio Ivan; Gusatto, Fabiane Cristina; Malavasì, Marlene de Matos; Stangarlin, José Renato; Malavasi, Ubirajara Contro

doi:10.5433/1679-0359.2015v36n1p47

Cited by 7 publications

(9 citation statements)

References 3 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, Schneider et al (2015) concluded that the thermal treatments 25; 45; 50 and 55 ºC for 15 min were not efficient to the control of the Fusarium spp. pathogens incidents in the oilseeds of jatropha (Jatropha curcas L.), confirming the results of the present work.…”

Section: Resultsmentioning

confidence: 99%

Thermotherapy via Humid Heat for the Treatment of Safflower Seeds

Menegaes¹,

Nunes²,

Bellé³

et al. 2019

JAS

View full text Add to dashboard Cite

The objectives of this work were to evaluate and adequate the method of thermotherapy via humid heat for the treatment of safflower seeds (Carthamus tinctorius L.) and, to verify its effect on the physiological and sanitary quality of seeds. The experiment was performed in the period from September to November, 2016 and from May to July, 2017, in entirely randomized design, arranged in 5 × 6 + 1 factorial scheme, with five temperatures: 25, 35, 45, 55 and 65 ºC and with six time periods: 5, 10, 15, 30, 45 and 60 min, plus the additional treatment (control), with eight repetitions. The seeds were packaged in glass of 500 mL and disposed in thermodigital water bath device with heated water according to the abovementioned factorial. We evaluated the degree of humidity of the seeds after thermotherapic treatments, the germination of normal seedlings, the emergence at field, the speed indexes of germination and emergence, the length and dry mass of seedlings and the sanity test. We observed that the treatment of seeds via humid heat thermotherapy was efficient in the control of phytopathogens, without damage to the physiological quality until 45 ºC. The treatment of 45 ºC for 15 min provided the greater reduction of the pathogens on the safflower seeds, incrementing its germinative potential and emergence at field.

show abstract

Section: Resultsmentioning

confidence: 99%

Thermotherapy via Humid Heat for the Treatment of Safflower Seeds

Menegaes¹,

Nunes²,

Bellé³

et al. 2019

JAS

View full text Add to dashboard Cite

show abstract

“…Studies have demonstrated the effectiveness of thermotherapy for seeds. SCHNEIDER et al (2015) found that the immersion of Jatropha curcas L seeds in water at 45, 50, and 55 °C for 15 minutes was effective to control Penicillium sp., and Acremonium sp., without compromising the physiological quality of seeds. By immersing pumpkin (Cucurbita pepo) seeds at 60 °C for 6 and 12 minutes, CUNHA et al (2017) found a reduction in the incidence of Alternaria sp., Aspergillus sp., Cladosporium sp., Curvularia sp., Penicillium sp., Phoma sp., and Rhizopus sp., without affecting the physiological quality of seeds.…”

Section: Introductionmentioning

confidence: 99%

Sanitary and physiological quality of ‘purple’ corn (Zea mays L.) seeds submitted to thermotherapy

et al. 2019

View full text Add to dashboard Cite

The use of seeds with good sanitary and physiological potential ensures the establishment of the crop, with a uniform, vigorous and disease-free seedling stand, which will result in good productivity levels. Seen that, the objective was to evaluate the sanitary and physiological quality of purple corn seeds (Zea mays L.) submitted to thermotherapy. They were subjected to heat treatment with immersion in sterile distilled water (SDW) heated at 50, 60 and 70 °C for 1, 2, and 3 minutes. The control (0 min) correspondens only to immersing the seeds in SDW, which were submitted to sanitary and germination tests in a completely randomized experimental design, in a factorial arrangement 3 × 3 + 1 (exposure time × temperature + additional control). Data were subjected to analysis of variance, and the means were compared with the Scott-Knott test up to 5% of probability, with the aid of the statistical program SISVAR®. Immersing Zea mays seeds in hot water at 50, 60 and 70 °C for 1, 2, and 3 minutes is efficient to prevent the increased incidence of Aspergillus sp., Penicillium sp., and Fusarium sp. The heat treatment at 60 °C for 1 and 2 minutes of immersion reduces the incidence of fungal mycoflora without impairing the physiological quality of seeds.

show abstract

“…Relative humidity and temperature influence fungal activity in storage. In situations favorable to the development of pathogens, it is necessary to use a sanitary treatment (Schneider, Gusatto, Malavasi, Stangarlin, & Malavasi, 2015).…”

Section: Introductionmentioning

confidence: 99%

Analysis of different tracking intervals for Parabolic Trough Collectors for water disinfestation in agricultural applications

Rocha

Mendonça

Watanabe

et al. 2020

SCA

View full text Add to dashboard Cite

The use of renewable energy is growing every year as an alternative to fossil fuel technology. Solar energy presents itself as a good alternative due to its great availability and energy potential. Solar thermal energy uses heat to warm fluids, and can also generate electricity, as well as being used in industrial processes and water desalination. The research and use of Parabolic Trough Collectors (PTCs) has been growing in recent years due to their ability to heat fluids at high temperatures in a relatively small area. In this work, two small PTCs were manufactured and tests were performed to improve the arrangements in order to increase the absorbed energy to reach temperature values for water disinfestation, aiming at the control of phytopathogens to control soil pathogens in small and medium farms. To control the automatic tracker, a low-cost system with Arduino, Light Dependent Resistors (LDRs) and step motors was used. The tracking times intervals analyzed were 1, 5 and 15 minutes. For the 1-minute tracking interval, the PTCs presented a thermal efficiency of 25.87%, with temperatures between 45 and 70 °C and an average of 63.73 °C. For the 5-minute tracking interval, the thermal efficiency was 18.48%, reaching temperatures between 41 and 68 °C and an average of 57.9 °C. For the 15-minute tracking interval, the PTCs presented a thermal efficiency of 14.80%, with temperatures between 39 and 62 °C and an average of 51.88 °C. The results showed that the tracking intervals of 1 and 5 minutes present more values between the lethal temperature range of 45 and 60 °C for phytopathogens. For agricultural application, the usage of a tracking interval of 5 minutes could be a good option for reducing the waste of system energy compared to the interval of 1 minute.Semina: Ciências Agrárias, Londrina, v. 41, n. 1, p. 7-32, jan./fev. 2020 Rocha, P. A. C.; Mendonça, S. P.; Watanabe, T. T. G.; Silva, M. E. V. da; Lima, R. J. P. e o uso de Coletores Solares Parabólicos (PTCs) têm crescido nos últimos anos devido à capacidade de aquecer fluidos em altas temperaturas em uma área relativamente pequena. Neste trabalho, dois pequenos PTCs foram fabricados, e testes foram realizados para melhorar os arranjos, a fim de aumentar a energia absorvida para atingir valores de temperatura para desinfestação de água, visando o controle de fitopatógenos no controle de patógenos de solo em pequenas e médias fazendas. Para controlar o rastreador automático foi utilizado um sistema de baixo custo com Arduino, Resistores de Potência Luminosa (LDRs) e motores de passo. Os intervalos de tempo de rastreamento analisados foram de 1, 5 e 15 minutos. Para o intervalo de rastreamento de 1 minuto, os PTCs apresentaram uma eficiência térmica de 25,87%, com temperaturas entre 45 e 70 ° C e 63,73 ° C de temperatura média. Para o intervalo de rastreamento de 5 minutos, a eficiência térmica foi de 18,48%, atingindo temperaturas entre 41 e 68 ° C e 57,9 ° C de temperatura média. Para o intervalo de rastreamento de 15 minutos, os PTCs apresentaram uma efici...

show abstract

Termoterapia e qualidade fisiológica e sanitária de sementes armazenadas de pinhão-manso

Cited by 7 publications

References 3 publications

Thermotherapy via Humid Heat for the Treatment of Safflower Seeds

Thermotherapy via Humid Heat for the Treatment of Safflower Seeds

Sanitary and physiological quality of ‘purple’ corn (Zea mays L.) seeds submitted to thermotherapy

Analysis of different tracking intervals for Parabolic Trough Collectors for water disinfestation in agricultural applications

Contact Info

Product

Resources

About