The management of sowing density on yield and lodging in the main oat biotype grown in Brazil

Romitti, Marcos Vinicios; Silva, Jos e Antonio Gonzalez da; Marolli, Anderson; Arenhardt, Emílio Ghisleni; Mamann, Ângela Teresinha Woschinski De; Scremin, Osmar Bruneslau; Lucchese, Os orio Antonio; Krüger, Cleusa Adriane Menegassi Bianchi; Arenhardt, Lorenzo Ghisleni; Bandeira, Luis Michel

doi:10.5897/ajar2016.10909

Cited by 8 publications

(3 citation statements)

References 26 publications

(35 reference statements)

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“…According to Romitti et al (2016), the value of up to 10% lodging of oat plants does not bring significant losses in grain yield. Afterwards, adjustment of the regression equation of degree two was performed to estimate the harvest index (HI), equation ( 14), of oats as a function of the growth regulator doses in reduced condition (30 kg ha -1 ), high (90 kg ha -1 ) and very high (150 kg ha -1 ) nitrogen fertilization.…”

Section: Methodsmentioning

confidence: 99%

Research Article A combination of regression and internal point methods as a hybrid model for estimating oat plant productivity

Marolli¹,

Silva²,

Rosa³

et al. 2021

Genet. Mol. Res.

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The internal points method (IPM-Carvalho), with regression analysis, can generate an efficient hybrid model for estimating oat grain productivity. We tested a combination of the internal points method and regression to estimate straw productivity. We also applied this methodology to forecast a harvest index in the elaboration of a hybrid model to estimate oat grain productivity, taking into account nitrogen management and growth regulator use, with biological and environmental indicators. Simulation of oat yield as a function of nitrogen and growth regulator applications, with biological and environmental inputs, can assist in the development of more efficient and sustainable management for this crop. Two experiments were conducted during 2013, 2014, and 2015; one was used to quantify biomass yield and the other to determine grain yield and plant lodging. The experimental design was randomized blocks with four replications in a 4 x 3 factorial scheme in the sources of variation, which were growth regulator (0, 200, 400 and 600 mL ha -1 ) and nitrogen (30, 90 and 150 kg ha applications. The environmental parameters that were included were rainfall and maximum air temperature. The nitrogen was applied as urea at the expanded fourth leaf stage. The growth regulator was trinexapac-ethyl applied at the ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 20 (2): gmr18756 A. Marolli et al. 2 stage between the 1st and 2nd visible stem node. Straw productivity was obtained by the IPM model with nitrogen dose and rainfall inputs. The harvest index was obtained by regression as a function of the growth regulator doses. The combination of the internal points method to estimate straw productivity with the use of regression in the forecast of the harvest index proved to be a useful model for estimating oat grain productivity based on biological and environmental parameters, together with nitrogen and growth regulator applications.

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Section: Methodsmentioning

confidence: 99%

Research Article A combination of regression and internal point methods as a hybrid model for estimating oat plant productivity

Marolli¹,

Silva²,

Rosa³

et al. 2021

Genet. Mol. Res.

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“…The expression of oat yield is associated with the genetic characteristics of each cultivar, the weather conditions during growing and the management technologies of the species (Brezolin et al, 2016;Romitti et al, 2016). Among management technologies, adequate nutrient supply is critical in ensuring grain quality yield (Mantai et al, 2015;Marolli et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Biostimulants in the Indicators of Yield and Industrial and Chemical Quality of Oat Grains

Silva

Mamann

Scremin

et al. 2020

JAS

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The supply of glutamic acid-based biostimulants may represent an innovative technology to increase oat grain yield and quality. The objective of this study is to measure the effect of different biostimulants based on concentrations of glutamic acid and nutrients and their application on indicators of productivity and industrial and chemical quality of oat grains. The study was conducted in 2016 and 2017 in a randomized block design with four replications, considering 10 combinations of treatments for different application conditions and types of glutamic acid-based biostimulants, which were: 1. Control; 2. Zinplex (seed) + Biomol (grain filling); 3. Zinplex (seed) + Glutamin Extra (grain filling); 4. Zinplex (seed) + Biomol (thinning); 5. Glutamin Extra (1st fungicide application) + Glutamin Extra (2nd fungicide application); 6. Biomol (1st fungicide application) + Biomol (2nd fungicide application); 7. Zinplex (seed) + Vorax (grain filling); 8. Vorax (1st fungicide application) + Vorax (2nd fungicide application); 9. Biomol (thinning) + Vorax (grain filling) and 10. Biomol (thinning) + Glutamin Extra (grain filling). The foliar application of biostimulants with the presence of glutamic acid and nutrients may have positive effects on variables related to productivity and industrial and chemical quality of oat grains, however, depending on the agricultural year conditions. The application of Glutamin Extra in the 1st and 2nd fungicide application shows the best results in the vast majority of grain yield and quality variables, but the costs involving only biostimulants do not guarantee economic viability.

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“…White oat stands out as a cultivation alternative during winter, especially in the South Region of Brazil, mainly because, in addition to the grain production, it is an important member in the crop succession and/or rotation system (Santos et al, 2014). This cereal has multiple purposes, such as use in human and animal food, in addition to being employed as green manure and in soil cover cropping (Hawerroth et al, 2014;Riede et al, 2015;Romitti et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Mineral composition of oat grains in response to nitrogen fertilization and growth regulator

Bazzo

Souza

Campana

et al. 2020

Agraria

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Nitrogen fertilization (N), in appropriate dose and moment, can favor yield and quality of oat grains. However, its overuse may result in plant lodging, which can be minimized by using growth regulators. With this in mind, this study aimed to evaluate the effect of applying ethyl-trinexapac and nitrogen doses on the accumulation of macro and micronutrients in white oat (IPR Afrodite; Avena sativa L.), grown in different environments in the state of Paraná (Londrina and Mauá da Serra). The field experimental design used was randomized blocks in split-plots, with four replicates. Treatments consisted of four N doses (0, 30, 60 and 90 kg ha -1 ) and the application or not of growth regulator. The data were subjected to analysis of variance with means comparison by the F test, and regression for the nitrogen doses (p<0.05). For Londrina conditions, applying growth regulator increased the iron content (+29%), and using nitrogen fertilization increased the phosphorus maximum content in the grains when subjected to a 60.65 kg ha -1 dose. In Mauá da Serra, applying growth regulator increased potassium content (+63%), and decreased phosphorus (-20%) and nitrogen (-8%) contents in the grains. The results demonstrate the importance of studies on adequate management practices, aiming to improve the mineral composition of white oat grains.

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The management of sowing density on yield and lodging in the main oat biotype grown in Brazil

Cited by 8 publications

References 26 publications

Research Article A combination of regression and internal point methods as a hybrid model for estimating oat plant productivity

Research Article A combination of regression and internal point methods as a hybrid model for estimating oat plant productivity

Biostimulants in the Indicators of Yield and Industrial and Chemical Quality of Oat Grains

Mineral composition of oat grains in response to nitrogen fertilization and growth regulator

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