Increasing Yield, Quality, and Safety of Chia Grains Through Sowing and Plant Population Managements Under Organic Production System

Da Rosa, Juliana Aozane; Da Silva, José Antonio Gonzalez; Carvalho, Ivan Ricardo; Magano, Deivid Araújo; Peter, Cibele Luisa; Babeski, Cristhian Milbradt; Zardin, Natália Guiotto; Jung, Júlia Sarturi

doi:10.24857/rgsa.v17n9-011

Cited by 3 publications

(1 citation statement)

References 36 publications

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“…A higher number of plants per area can improve plant competitiveness and suppress weeds, increase straw volume to prevent erosion, control soil moisture, and result in better maturation uniformity, reducing the use of preharvest agrochemicals. Pre-harvest burndown is carried out based on herbicides that dry or defoliate plants, facilitating harvesting (Daltro et al, 2010;Silva et al, 2012;Rosa et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Seeding density and lodging control using a calcium and potassium-based organomineral fertilizer in oat crops

Coppetti,

Da Silva,

Carvalho

et al. 2024

CLCS

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Technologies ensuring high crop yield and plant competitiveness without lodging can contribute to an efficient and sustainable management of oat crops. The objectives of this study were to evaluate the use of high seeding density in current oat cultivars grown in the northwestern Rio Grande do Sul (RS), Brazil; assess the effects of plant growth regulators on grain yield indicators, industrial grain quality, and stem structure; and evaluate a calcium and potassium-based organomineral product as a sustainable technology for controlling lodging. Two experiments were conducted in Augusto Pestana, RS, in a randomized block design. Experiment I (2021) was set up in a 4×3 factorial arrangement consisted of 4 oat seeding densities (100, 300, 600, and 900 seeds m-2) and 3 treatments with plant growth regulator (PGR) application (control; application of trinexapac-ethyl and organomineral product at the stage between the 1st and 2nd visible stem nodes). Experiment II (2022) was set up in a 4×4 factorial arrangement consisted of 4 seeding densities (100, 300, 600, and 900 seeds m-2) and 4 PGR application treatments (control; application of trinexapac-ethyl and organomineral product at the stage between the 1st and 2nd visible stem nodes; and sequential application of organomineral product at V4 and at the stage between the 1st and 2nd visible stem nodes). The results of both experiments showed the need for a higher seeding density (between 400 and 520 seeds m-2) than that recommended. High air temperatures and limiting soil water conditions increased the phytotoxic potential of trinexapac-ethyl in oat crops. Evaluations of the Ca and K-based organomineral product, as a sustainable technology for controlling plant lodging, requires further analysis in years with more favorable environmental conditions for oat crops.

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Section: Introductionmentioning

confidence: 99%

Seeding density and lodging control using a calcium and potassium-based organomineral fertilizer in oat crops

Coppetti,

Da Silva,

Carvalho

et al. 2024

CLCS

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Sustainable Management for oat Grain Yield and Quality Based on Nitrogen Supply and Seeding Density

Da Rosa,

Da Silva,

Alessi

et al. 2023

RGSA

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Purpose: The objective of this study is to evaluate a sustainable management for oat crops with high nitrogen use efficiency combined with high seeding density to improve grain yield and quality while increasing oat competitive ability against ryegrass. Method/design/approach: The experiment was carried out in the years 2020, 2021 and 2022, with an experimental design of randomized blocks with four replications, in a 4 x 3 factorial arrangement, for sowing densities (100, 300, 600 and 900 viable seeds m-2) and form of nutrient supply: [single dose, (100%) at phenological stage V4 (fourth expanded leaf); fractional (70/30%) at the V4/V6 phenological stage (fourth and sixth expanded leaves) and; fractionated (70/30%) at phenological stage V4/R1 (beginning of anthesis)], respectively. Indicators of productivity and chemical quality of oat grains were analyzed, and lodging and ryegrass inflorescences exposed on oat plants were analyzed in the field. Results and conclusion: The application of a single dose of nitrogen at the V4 stage resulted in higher grain and oat straw yields, without changes in the crude protein and crude fiber content of the grains. The combination of this nitrogen application method with a sowing density of 490 seeds m-2 increased the competitive capacity of white oat plants, reducing the number of ryegrass inflorescences. Originality/value: This study contributes to more sustainable management practices in the use of nitrogen and the contribution of plant density in promoting competitive ability, reducing dependence on agrochemicals in ryegrass control and promoting food security and environmental protection.

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Densidade De Sementes E Aplicação Foliar De Fertilizante Organomineral À Base De Cálcio E Potássio Na Cultura Da Aveia

Coppetti,

Da Silva,

Carvalho

et al. 2024

RGSA

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Purpose: To present the benefits of increasing oat sowing density on productivity, uniformity, soil quality and reduction of pesticides and the use of an organomineral product based on calcium and potassium as an alternative to lodging control, promoting more sustainable cultivation systems. Theoretical framework: Increasing plant density can promote productivity, rapid soil coverage, reduction of weeds and greater harvest uniformity, reducing the use of pesticides. However, increasing seeding density can promote lodging. Lodging is the phenomenon in which plants leave the vertical position and fall to the ground, affecting the quality of the grains. The commercial product registered to control lodging is highly toxic to the environment. Organomineral sources with potassium and calcium represent an alternative for controlling lodging with reduced environmental impacts. Results: Benefits of increased seeding density to promote grain yield have been found for several crop species, reinforcing the need for adapting seeding density for oat crops. The use trinexapac-ethyl as a growth regulator, it poses risks of phytotoxicity and environmental contamination. In this context, several studies have indicated that potassium and calcium favor cell wall rigidity, potentially contributing to oat stem strength. Originality/value: This study provides significant contribution to the advancement of research on oat in Brazil, bringing new information benefiting farmers, technical assistance agents, and the food industry and improving the production system to ensure food security and care for the environment.

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Increasing Yield, Quality, and Safety of Chia Grains Through Sowing and Plant Population Managements Under Organic Production System

Cited by 3 publications

References 36 publications

Seeding density and lodging control using a calcium and potassium-based organomineral fertilizer in oat crops

Seeding density and lodging control using a calcium and potassium-based organomineral fertilizer in oat crops

Sustainable Management for oat Grain Yield and Quality Based on Nitrogen Supply and Seeding Density

Densidade De Sementes E Aplicação Foliar De Fertilizante Organomineral À Base De Cálcio E Potássio Na Cultura Da Aveia

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