Biometric approach applied to soybean genotypes cultivated in Rio Grande do Sul, Brazil

Carvalho, Ivan Ricardo; Peter, Márcio; Demari, Gustavo Henrique; Hutra, Danieli Jacoboski; Conte, Giordano Gelain; Zimmermann, Christian Szambelam; Silva, José Gonzalez da; Sangiovo, Jaqueline Piesanti

doi:10.33158/asb.r118.v7.2021

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…On the other hand, for the mass of one thousand seeds, strong negative correlations were observed in the associations with plant height in stages R2 (-0.91), R5 (-0.84) and R9 (-0.86) and with the number of nodes per plant (-0.75). There was a positive correlation of high magnitude between the number of pods per plant and grain yield, a result that supports conclusions by Carvalho et al (2017) and Carvalho et al (2021a). Similarly, the number of seeds per plant demonstrates a positive correlation of a medium magnitude with grain yield.…”

Section: Resultssupporting

confidence: 84%

Research Article Nitrogen supplementation improves yield and quality of soybean seeds

Bagateli,

Franco,

Meneghello

et al. 2023

Genet. Mol. Res.

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Nitrogen use in soybeans is still not fully taken advantage of. Increased use of nitrogen fertilizer couldnot only increase agricultural productivity, but also strengthen food security in the context of the increasing global need for food. The objective of this study was to evaluate the performance and seed quality of soybeans supplemented with nitrogen. The research was carried out in the municipality of Los Cedrales, Alto Paraná, Paraguay. The trial was conducted in an experimental design of randomized blocks, organized in factorial scheme 2 (genotypes) x 4 (fertilization management). The evaluated genotypes were cultivar DM 5958 RSF Ipro and cultivar 6410 Ipro, both registered, protected and indicated for cultivation in the southern region of Brazil and in Paraguay. Nitrogen fertilization treatments were defined considering the ease of application of doses at soybean development stages. In 10 plants per experimental unit, the following variables were determined: plant height, number of nodes, pods and seeds per plant, and the weight of one thousand seeds. The grain yield (GY, kg ha -1 ) was determined by harvesting the useful area of each experimental unit, corrected to 13% humidity. The physiological quality of seeds was evaluated through the following variables: germination and vigor of seeds and emergence of seedlings in beds. Nitrogen supplementation ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 22 (4): gmr19175 J.R. Bagateli et al. 2 significantly increased the number of nodes, the weight of a thousand seeds and the number of soybean pods. Compared to no N application (0R2/0R5), treatments with application of 120 kg ha¹ of N in R2 (120R2/0R5); and 60 kg ha¹ of N in R2 and R5 (60R2/60R5) of soybeans, caused increases in seed productivity of 7 and 8%, and in the physiological quality of seeds with increases of up to 7 and 5% in vigor and seedling emergence, respectively. Based on soil and climate conditions, genotypes, management, and analyses performed, the split application of 120 kg ha -1 of N between stages R2 and R5 resulted in higher productivity and greater physiological quality of the soybean seeds.

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Section: Resultssupporting

confidence: 84%

Research Article Nitrogen supplementation improves yield and quality of soybean seeds

Bagateli,

Franco,

Meneghello

et al. 2023

Genet. Mol. Res.

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“…Estimates of linear relationships between soybean traits are of great importance for the indirect selection of traits with low heritability or difficult to measure. Studies carried out by Ferrari et al (2018), Nardino et al (2016 and Carvalho et al (2021) have shown some relationships, however, few results are presented with managements without fungicide.…”

Section: Resultsmentioning

confidence: 98%

Economic and Agronomic Positioning of Fungicides in Conditions of Water Deficit in Soybean Cultures

Carvalho

Loro

Schmidt

et al. 2022

Trop Subtrop Agroecosyst

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Background. The management of diseases in soybean crops demands a great economic cost with fungicide applications. Therefore, unnecessary or excessive applications can promote negative environmental results. Therefore, understanding the weather conditions and the development of diseases in the crop is essential to avoid the unnecessary use of fungicides, consequently reducing costs and ensuring the sustainability of the activity. Aim. The aim is to identify which yield components are quantitatively affected, and which aspects of the chemical composition of the grains are qualitatively influenced by fungicide management, in addition to relating the cost-benefit rate of sequential applications or previously stipulated management in the soybean crop, as well as their economic effects under water deficit conditions. Methodology. The trial was carried out using a randomized block design composed of 4 replications. The trial consisted of 5 kinds of fungicide management, defined by the time and number of applications, during the development cycle of the Lança cultivar, in the 2019/2020 crop season. Soybean agronomic traits and nutritional attributes were evaluated. Results. Unfavorable climate conditions contributed to the low rate of Asian rust infection during the soybean development cycle. The different kinds of fungicide management influenced soybean performance for the main agronomic variables studied. For the chemical composition of the grains, there was no statistical difference in relation to the different kinds of fungicide management. Implications. The results indicate that the management of fungicides must be carried out according to the meteorological conditions of the year of cultivation. Conclusion. Management without fungicide application maximized grain yield and promoted the highest economic return.

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“…Soybean ( Glycine max (L.) Merrill) is a crop of great economic importance worldwide, with the multiple use of its grains in the agroindustry to manufacture human food and animal feed products, such as vegetable oil and bran, as well as a protein source in animal feed (Boerema et al, 2016; Carvalho et al, 2021). In addition, the crop has become important as an alternative source of biofuel (Rodrigues, 2021).…”

Section: Introductionmentioning

confidence: 99%

24‐Epibrassinolide promotes activation of physiological compensation mechanisms in response to drought stress and rehydration and improves yield in soybean

Silva

Ferreira

Santos

et al. 2022

J Agronomy Crop Science

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Drought stress is the main limiting factor for the yield of soybean crop in the world.Alternatives to minimize the impacts of water deficit on plants involve the application of plant bioregulators, among which Brassinosteroids stand out. In this study, nodulated soybean plants were used to investigate the ability of the 24-epibrassinolide (EBR) bioregulator to reduce the damage caused to physiological mechanisms, growth and yield, after application in the vegetative stage of soybean plants, subjected to drought stress and rehydration. Application of EBR in plants subjected to drought stress promoted better performance in the rates of transpiration, photosynthesis and instantaneous water use efficiency compared to plants without EBR. The lowest reductions in relative water content and leaf water potential were recorded in stressed soybean plants treated with EBR. Plants under drought stress treated with EBR showed increase in the effective photochemical efficiency of PSII. In addition, soybean plants that received EBR application showed lower oxidative damage to cell membranes. The positive effect of EBR remained after soybean rehydration. Plants treated with EBR showed better recovery with greater plant height, leaf area, lower number of aborted grains, in addition to an increase in stem (37.2%), root (62.8%), leaf (51.8%) dry matter and 1000 seed weight (33%) compared to plants without EBR. This information suggests that EBR not only mitigated the deleterious effect of drought stress but also improved plant growth and yield post-stress.

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Biometric approach applied to soybean genotypes cultivated in Rio Grande do Sul, Brazil

Cited by 6 publications

References 15 publications

Research Article Nitrogen supplementation improves yield and quality of soybean seeds

Research Article Nitrogen supplementation improves yield and quality of soybean seeds

Economic and Agronomic Positioning of Fungicides in Conditions of Water Deficit in Soybean Cultures

24‐Epibrassinolide promotes activation of physiological compensation mechanisms in response to drought stress and rehydration and improves yield in soybean

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