Manejo nutricional com micronutrientes e seus efeitos sobre os componentes de produtividade na cevada

Pessenti, Isabela Letícia; Torres, Adalci Leite; Martins, Warlyton Silva; Macoski, Nádia

doi:10.33448/rsd-v10i3.13225

Cited by 2 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Like other cultivated species, barley needs effective and continuous research support (Pessenti et al, 2021), such as in the application of new technologies to improve productive potential expression with the increase of profitability and seeds quality (Tavares et al, 2018). These topic is very important for all crops system production, as it is the beginning of process.…”

Section: Introductionmentioning

confidence: 99%

Pre-harvest glyphosate desiccation on barley seed quality

Pagliarini

Reboucas

Monaco-Mello

et al. 2021

RSD

View full text Add to dashboard Cite

The experiment was conducted into two stages, the first being the barley seed production and application of glyphosate and the second the vigour tests in the laboratory. Both stages were performed at the Experimental Farm of Agrarian Sciences at Grand Dourados Federal University (UFGD). In field, four cultivars of barley was sowing being: BRS Cryst, BRS Kallibre, BRS Demeter, BRS Sampa. For desiccation, the glyphosate herbicide (480 g L-1 of active ingredient) was used, applied using a backpack sprayer at dose of 5 L ha-1. The experimental design used was randomized blocks, and each cultivar was divided into five replications, applying the herbicide in four of them leaving one without application for control. The application was made when seeds presented water content close to 50%. At second stage, eight evaluation were made being one at the day of glyphosate application, one, two, three, eight, ten and fourteen days after application and without application in natural physiological maturity. In each evaluation, sowing was performed according to Rules to Seed Analysis. The analyses were: First count, percentage of germination, germination speed index, mean germination time, mean germination speed, accelerated aging and synchronization index. Glyphosate has interfered negatively in the physiological maturation of barley seeds when the herbicide was applied in pre-harvest. The results obtained showed that there was an increase in seeds germination after 14 days of application, however, the means were significantly smaller in relation to seeds harvested at the point of physiological maturation without glyphosate application.

show abstract

Section: Introductionmentioning

confidence: 99%

Pre-harvest glyphosate desiccation on barley seed quality

Pagliarini

Reboucas

Monaco-Mello

et al. 2021

RSD

View full text Add to dashboard Cite

show abstract

Allelopathy of the essential oil of Fortunella margarita (Lour.) Swingle) in the germination on Helianthus annuus L. and Hordeum vulgare L.

Cavalheiro,

Rocha

2024

Braz. J. of Sci.

View full text Add to dashboard Cite

Fortunella margarita known as ‘Kin-Kan or kumquat orange’ is a citrus species cultivated in South America with excellent adaptation to different climates, especially tropical. The fruits of F. margarita have a spectacular essential oil content. This study aimed to evaluate the allelopathic action of essential oil from ripe fruits of F. margarita in different concentrations on two large crops, sunflower (Helianthus annuus) and barley (Hordeum vulgare) in vitro. Ripe fruits of F. margarita were collected from an orchard in Rio Verde, Goiás, Brazil in January 2024. The skin of the fruits was removed and crushed to obtain the essential oil by Clevenger. The essential oil content obtained was expressed as a percentage (%). For the chemical profile, gas chromatography with sequential mass spectrometry (GC-MS) was used. For the allelopathic assay, varying concentrations of essential oil were produced. The allelopathic test was carried out in acrylic germination boxes and kept in a D.B.O. vegetation chamber. The results were expressed as percentage of germination µL mL-1. The radicle length was determined using a digital caliper and expressed in centimeters (cm). Seven major volatile compounds were obtained (D-Limonene 22%, β-Phellandrene 12%, β-Pinene 11%, Germacrene D 9%, Bicyclosexquiphellandrene 8%, Trans-Arbuscolene and α-Guaiene both with 5%). The essential oil demonstrated strong allelopathic activity on sunflower germination rates, especially for concentrations greater than 12.5-100 µL mL-1, between 54.40 and 12.80%. Barley seeds demonstrated resistance and a rate greater than 50% at the highest concentration (100 µL mL-1). Radicle length also showed a significant difference (P < 0.05) in all essential oil concentrations. Again, sunflower was strongly affected, with average primary roots between 0.98 and 0.11 cm and between 2.77 and 0.11 cm for barley. The essential oil from the ripe fruits of Fortunella margarita has an allelopathic action on germination and a toxic effect on the development of primary roots in sunflower and barley seeds.

show abstract

Manejo nutricional com micronutrientes e seus efeitos sobre os componentes de produtividade na cevada

Cited by 2 publications

References 13 publications

Pre-harvest glyphosate desiccation on barley seed quality

Pre-harvest glyphosate desiccation on barley seed quality

Allelopathy of the essential oil of Fortunella margarita (Lour.) Swingle) in the germination on Helianthus annuus L. and Hordeum vulgare L.

Contact Info

Product

Resources

About