Time of Nitrogen Supply in Yield and Industrial Quality of Oat Grains by Agricultural Condition

Kraisig, Adriana Roselia; Silva, José Antônio Gonzalez da; Carvalho, Ivan Ricardo; Lautenchleger, Francine; Mamann, Ângela Teresinha Woschinski De; Fachinetto, Juliana Maria; Pereira, Laura Mensch; Basso, Natiane Carolina Ferrari; Argenta, Cláudia Vanessa; Norbert, Leonardo; Berlezi, Júlio Daronco

doi:10.5296/jas.v8i4.17249

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…It is noteworthy that due to the mobility of this nutrient, it is easily transported by terrestrial ecosystems, contributing to the occurrence of adverse impacts on ecosystem services, climate change and human health (Cameron et al, 2013). Air temperature also has a strong effect on plant development dynamics and the use of nitrogen on productivity (Kraisig et al, 2020). Higher temperatures favor nutrient losses by volatilization in the form of ammonia, reducing the production of new tillers, a component directly related to grain yield (Scremin et al, 2020).…”

Section: Meteorological Elements and Nitrogen Fertilizer Managementmentioning

confidence: 99%

May 2023

2023

Aust J Crop Sci

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The entry and progression of oat foliar diseases affect yield potential, requiring a combination of genetic resistance and management technologies. The objective of the study is implementing a management system to reduce the use of fungicide in oats by the anticipation of the application and a longer interval from the last application to the grain harvest, together with the identification of cultivars that are more resilient to disease. The study was developed in 2018 and 2019, in soil of type Typical Dystroferric Red Latosol and Cfa (humid subtropical) climate, in Augusto Pestana, RS, Brazil. The experimental design was randomized blocks with three replications in a 23 x 5 factorial, for 23 oat cultivars and 5 conditions of fungicide use: control (no application); one application 60 days after emergence (DAE); two applications at 60 and 75 DAE; three applications at 60, 75 and 90 DAE and four applications at 60, 75, 90 and 105 DAE, with measurement of grain productivity. In oat cultivation, the early and sequential application of fungicide at 60, 75 and 90 days after emergence guarantees satisfactory productivity with a long interval from the last application to harvest for greater food security. The cultivars URS Altiva and IPR Artemis show resilience in the presence of foliar diseases in the absence and reduced use of fungicide, facilitating the transition between conventional and agroecological agriculture in oat cultivation.

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Section: Meteorological Elements and Nitrogen Fertilizer Managementmentioning

confidence: 99%

May 2023

2023

Aust J Crop Sci

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Adaptabilidade E Estabilidade De Cultivares De Aveia À Redução Do Uso De Fungicida Com Produtividade Satisfatória

Pereira¹,

Silva²,

Alessi³

et al. 2023

RGSA

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Purpose: The objective of the study is to identify oat cultivars with satisfactory productivity and adaptability to reduced use of fungicide concomitant with the longest interval between the last application and grain harvest, in the recommendation of biotype more adjusted to agroecological management. Method/design/approach: The study was developed in 2018, 2019, in Augusto Pestana, RS, Brazil. The experimental design was a randomized block with three replications in a 23 x 5 factorial, for 23 Brazilian oat cultivars and 5 fungicide use conditions, applied on the time scale every 15 days cumulatively: control (no application); one application 60 days after emergence (DAE); two applications at 60, 75 DAE; three applications at 60, 75, 90 DAE and four applications at 60, 75, 90, 105 DAE. Results and conclusion: Experimental strategies with the analysis of adaptability and stability help to identify oat cultivars that are more resilient to the absence or reduction of fungicide use, promoting more sustainable management. The cultivars URS Brava and URS Altiva present satisfactory productivity with adaptability to the absence or reduced use of fungicide, providing a safe interval from the last application to the grain harvest, with the indication for agroecological management. It is necessary to promote food security based on new scenarios, including the environment, technology, economy and society. Originality/value: Unprecedented study seeking to reduce the use of fungicidal pesticides to control oat diseases using adaptability and stability models, providing opportunities for the analysis of different scenarios to identify cultivars more suited to agroecological management.

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Agronomic Biofortification with Iron and Zinc on Yield and Quality of Oat Grains for the Validation of a Potential Resource for Nutritional Security

Babeski,

Da Silva,

Carvalho

et al. 2023

RGSA

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Purpose: The objective of this study was to develop a management proposal for biofortification of oat crops with iron and zinc by foliar application and validate the technology by analyzing indicators of yield and industrial and chemical quality of grains. Method/design/approach: The experiment was carried out in Augusto Pestana, RS, in 2020 and 2021. A randomized block experimental design with four replications was used, in a 3×5 factorial arrangement. The treatments consisted of applications of zinc sulfate, iron sulfate, and zinc sulfate + iron sulfate at rates of 0, 500, 1000, 2000, and 4000 g ha-1. Indicators of yield and industrial and chemical quality of oat grains were analyzed. Results and conclusion: The agronomic biofortification with iron and zinc by foliar application at the grain filling stage does not affect yield and industrial and chemical quality of oat grains. Zinc biofortification with sulfate sources promotes increases in zinc contents in oat caryopses, however, with a decrease in iron contents. Iron biofortification with sulfate sources increases iron contents in the oat caryopsis, however, with a decrease in zinc contents. Originality/value: The lack of iron and zinc in foods is a major public health problem worldwide. This study makes a great contribution to validate the technology for biofortification of oat grains with iron and zinc, ensuring food and nutritional security for the population.

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Time of Nitrogen Supply in Yield and Industrial Quality of Oat Grains by Agricultural Condition

Cited by 3 publications

References 19 publications

May 2023

May 2023

Adaptabilidade E Estabilidade De Cultivares De Aveia À Redução Do Uso De Fungicida Com Produtividade Satisfatória

Agronomic Biofortification with Iron and Zinc on Yield and Quality of Oat Grains for the Validation of a Potential Resource for Nutritional Security

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