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

Abstract

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.

Efficiency of nitrogen use by wheat depending on genotype and previous crop

“…Prior knowledge of rainfall condition may indicate management ways that ensure crop success (Arenhardt et al, 2015;Scremin et al, 2017). In winter cereals, there is less rainfall but it sustains suitable soil moisture and is well distributed over the cycle, this characterizes a favorable environment to nitrogen management and higher productivity (Marolli et al, 2018;Silva et al, 2020). Besides rainfall, air temperature seriously affects nitrogen use and yield expression.…”

Research Article The supply of nitrogen fertilizer in wheat to the highest environmental quality with satisfactory yield

“…The United Nations Sustainable Development Goals represent an urgent and formidable challenge for scientists and society, due to the urgent need to transform agriculture and the food sector in achieving food security with socio-environmental sustainability (Dhankher and Foyer, 2018;Silva et al, 2020). In this context, it is necessary to promote food security based on new concepts, which requires a much broader and systems-based approach, including the environment, technology, economy and society, at all levels of the organization (Nüsslein and Dhankher, 2016;Dornelles et al, 2020).…”

Research Article Nitrogen levels in oat grains and its relation to productivity

“…Research indicates that an environment favorable to winter grain cultivation requires well-distributed rainfall throughout the cycle and in small volumes, and with lower air temperatures from germination to grain filling (Leonard and Martinelli, 2005;Marolli et al, 2017). Meteorological factors have a significant effect on the expression of oat yield potential, being air temperature and rainfall the most affecting grain yield and quality (Silva et al, 2016;Silva et al, 2020). Peltonen-Sainioet et al (2017) showed that high rainfall at the end of the crop cycle has a negative impact on oat productivity.…”

“…Peltonen-Sainioet et al (2017) showed that high rainfall at the end of the crop cycle has a negative impact on oat productivity. In addition, it can affect quality by reducing hectolitic mass and giving dark color to grains, an undesirable condition for the food industry (Marolli et al, 2018;Silva et al, 2020). In addition, excessive rainfall coupled with high humidity and air temperature hinder plant development, as well as favoring the emergence of diseases, causing reduced yield and poor grain quality (Penning de Vries et al, 1989;Castro et al, 2012).…”