scholarly journals Nodulation and Development of Soybean Submitted to Inoculation With Bradyrhizobium japonicum and Phosphorus Doses

2018 ◽  
Vol 10 (12) ◽  
pp. 321 ◽  
Author(s):  
Erica Chaves ◽  
Rubson da Costa Leite ◽  
Thalita Rodrigues Silva ◽  
Thayny Alves Viana ◽  
Tatiane de Sousa Cruz ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Experimental Design ◽  
Bradyrhizobium Japonicum ◽  
Phosphate Fertilizer ◽  
Dry Mass ◽  
Root Number ◽  
Phosphate Fertilization ◽  
Soybean Plants ◽  
Biological Nitrogen ◽  
Plant Dry Mass

Among the several factors that may influence nodulation and the efficiency of biological nitrogen fixation for soybean plants, nutrient availability is among the most important. This study aimed to evaluate the inoculation with Bradyrhizobium japonicum and doses of phosphorus on the development of soybean in a Vertisol, in Tocantins. The experimental design was completely randomized in a 4 × 2 factorial scheme, with four replications. Four doses of phosphate fertilization (0, 100, 200, and 300 kg ha-1 P2O5) were studied, combined with two inoculation treatments with Bradyrhizobium japonicum (inoculated and not inoculated). The following variables were evaluated: plant height, stem diameter, nodules per plant, dry mass of nodules, dry mass of plant, dry mass of root, number of pods and number of grains per pod. Under greenhouse conditions and soil with good availability of phosphorus, there is no influence of the doses on the inoculation with Bradyrhizobium japonicum. Soils with good availability of phosphorus have low response to the application of phosphate fertilizer.

Metabolic Adjustment of Glycine max (L.) Merril in the Presence of Nitrate and Bradyrhizobium japonicum

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1518
Author(s):  
Alberto Mongolo Júnior ◽  
Felipe Girotto Campos ◽  
Gustavo Ribeiro Barzotto ◽  
Jonas Akenaton Venturineli Pagassini ◽  
Maria Aparecida Ribeiro Vieira ◽  
...  
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Dry Mass ◽  
Antioxidant Systems ◽  
Oxygen Species ◽  
Membrane Stabilization ◽  
Total Sugars ◽  
Vegetative Phase ◽  
Glycine Max L ◽  
Metabolic Adjustment ◽  
Plant Dry Mass

Reactive oxygen species are generated during the processes of photosynthesis and nitrate reduction, which can compromise the integrity of biomolecules and membranes. During the vegetative phase of Fabaceae species, around half of translocated carbohydrate is used for nodule growth, while the other half returns to the aerial part with nitrogen incorporated. These sugars may be yet involved with membrane stabilization, signaling, and activation of important genetic pathways for plant development. Thus, the aim was to study the adjustments of the photosynthetic and antioxidant systems and the accumulation of carbohydrates and biomass in Glycine–Bradyrhizobium cultivated with nitrate (NO3−). Four treatments were evaluated in completely randomized blocks. Glycine–Bradyrhizobium was grown with 1.7 mM of NO3− (GB: 1.7 mM NO3−) and without NO3− (GB: 0 mM NO3−), and Glycine was grown with 1.7 mM of NO3− (G: 1.7 mM NO3−) and without NO3− (G: 0 mM NO3−). Glycine–Bradyrhizobium symbiosis contributes to photosynthetic metabolism and total sugars, reduces the action of antioxidant enzymes, and minimizes the use of nitrate in soybean cultivation.; Glycine–Bradyrhizobium with nitrate provided greater plant dry mass in the vegetative phase, along with increased enzymatic activity and reduced nodule mass.

scholarly journals Development of RR soybean in function of glyphosate doses and Bradyrhizobium inoculation

2018 ◽  
Vol 22 (12) ◽  
pp. 854-858
Author(s):  
João W. Bossolani ◽  
Nadia M. Poloni ◽  
Edson Lazarini ◽  
João V. T. Bettiol ◽  
João A. Fischer Filho ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Symbiotic Nitrogen Fixation ◽  
Soybean Seeds ◽  
Leaf Chlorophyll ◽  
Outdoor Experiment ◽  
Glyphosate Herbicide ◽  
Soybean Plants ◽  
Biological Nitrogen ◽  
Different Doses ◽  
Herbicide Glyphosate

ABSTRACT Soybean has traditionally been produced in systems that include the use of herbicides, often in higher than recommended doses. The process of symbiotic nitrogen fixation in legumes can be hampered by these herbicides, both by direct effects on rhizobia and indirect effects on the host plant. An outdoor experiment was performed to evaluate the effects of different doses of a glyphosate herbicide on Bradyrhizobium strains and biological nitrogen fixation in soybean BMX Potência RR plants. Soybean seeds were inoculated with Bradyrhizobium elkanii (SEMIA 5019) and Bradyrhizobium japonicum (SEMIA 5079) strains in a commercial liquid inoculant. The treatments consisted of the absence and presence of Bradyrhizobium genotypes inoculated via seed and four doses of the herbicide glyphosate applied on the leaves (0, 1.0, 2.0, and 4.0 L ha-1 of the commercial product) at the V3 stage. The leaf chlorophyll index of inoculated RR soybean plants did not change on the application of glyphosate and, regardless of inoculation, plants had the capacity to recover from the effects of glyphosate application, without impaired development.

scholarly journals Monoammonium phosphate coated with polymers and magnesium for coffee plants

2018 ◽  
Vol 42 (3) ◽  
pp. 261-270 ◽  
Author(s):  
Douglas Ramos Guelfi ◽  
Wantuir Filipe Teixeira Chagas ◽  
Jordana Reis Lacerda ◽  
Rafael Mattioli Rezende Chagas ◽  
Taylor Lima de Souza ◽  
...  
Keyword(s):  
Phosphate Fertilizer ◽  
Dry Mass ◽  
Monoammonium Phosphate ◽  
Agronomic Efficiency ◽  
Anionic Polymers ◽  
Growth And Nutrition ◽  
Phosphate Fertilization ◽  
Use Efficiency ◽  
Coffee Plants ◽  
Mg Content

ABSTRACT The coating of phosphate fertilizer granules with polymers and magnesium (Mg) is a technology that can improve phosphorus (P) use efficiency and mitigate problems of low Mg supply in coffee crops. The objective of this work was to evaluate the growth and nutrition characteristics of coffee seedlings and the agronomic efficiency (AE) of monoammonium phosphate (MAP) coated with anionic polymers and Mg in comparison with other phosphate fertilizer technologies. The experiment was carried out in a greenhouse in 20 L pots. Two five-month-old coffee seedlings were transplanted into each pot. The experimental design was completely randomized with three replicates. The following treatments, applied at a dose corresponding to 20 g pot-1 of P2O5, were carried out: MAP; MAP coated with anionic polymers (Policote Phós®); MAP coated with anionic polymers+Mg (Policote Phós_Mg®); Top-Phós®; and Agrocote®. A control (without P) was prepared. Plant height; leaf area; dry mass of leaves, stems, and roots; total dry mass; shoot/root ratio; specific leaf weight; P and Mg content in plants and their availability in the soil after cultivation and efficiency indicesof the phosphate fertilization treatment were evaluated. The recovery of applied P and the agronomic efficiency of phosphate fertilizers was found to increase in the following order: MAP = Top-Phós® = Agrocote®<MAP+Policote Phós® = MAP+Policote Phós_Mg®. The coating of the MAP+Policote Phós_Mg® granules increased growth, the content and accumulation of P and Mg in coffee seedlings, the availability of these nutrients in the soil after cultivation and the agronomic efficiency of phosphate fertilization.

scholarly journals Development of Plants in Combination of Products Associated with the Inoculation in the Soybeans Seeds Treatment

2017 ◽  
Vol 9 (9) ◽  
pp. 123
Author(s):  
Everton Vinicius Zambiazzi ◽  
Adriano Teodoro Bruzi ◽  
Frederico Dellano Souza Silva ◽  
Eric Vinicius Vieira Silva ◽  
Alan Mario Zuffo ◽  
...  
Keyword(s):  
Experimental Design ◽  
Seed Treatment ◽  
Aerial Part ◽  
Dry Matter ◽  
Dry Mass ◽  
Root Mass ◽  
Root Volume ◽  
Foliar Nitrogen ◽  
Soybean Plants ◽  
Shoot Mass

The purpose of this study was to evaluate the effect of different combinations of products applied through seed treatment, associated with the inoculation, in the development of soybean plants. The experiment was conducted in a greenhouse at Federal University of Lavras (UFLA). The experimental design was a randomized complete block, with four repetitions in a factorial 4 × 11, being four soybean cultivars and 11 combinations of products associated with the inoculation in the treatment of seeds. At the stage (R1) it was evaluated: plant height, leaf area, foliar chlorophyll content, number of trifoliate leaves, dry shoot mass, dry root mass, root length, root volume, nodules total number, viable nodules total number, nodules dry mass and foliar nitrogen content. The combination of products in the treatment of seeds, do not present phytotoxic effects in the characters related to the development, except for dry matter of aerial part and root volume. The combination of products in treatment of seeds influences negatively the nodulation, especially in the treatments with presence of nematicide. The inoculation performed in isolation or combined with fungicide and insecticide (I+FI) maintains nodule levels.

scholarly journals Biological nitrogen fixation and agronomic features of soybean (Glycine max (L.) Merr.) crop under different doses of inoculant

2018 ◽  
Vol 67 (2) ◽  
pp. 297-302 ◽  
Author(s):  
Alessandro Pedrozo ◽  
Nelson João Girelli de Oliveira ◽  
Odair Alberton
Keyword(s):  
Nitrogen Fixation ◽  
Glycine Max ◽  
Biological Nitrogen Fixation ◽  
Bradyrhizobium Japonicum ◽  
Glycine Max L ◽  
Agronomic Features ◽  
Biological Nitrogen ◽  
Different Doses

La soya es uno de los cultivos más importantes del mundo y presenta una gran versatilidad. Este estudio tiene como objetivo investigar el efecto del inoculante Bradyrhizobium japonicum a 0, 600 y 1200 ml ha-1 en cultivo de soya, con y sin 1 L ha-1 calcio (Ca 41%) + 0,4 L ha-1 boro (B 14 %). Las plantas se cultivaron durante 90 días en macetas de plástico con 3 kg de arena y vermiculita (v / v) tratadas en autoclave a 121°C durante 1 h. El experimento se realizó en un diseño completamente aleatorizado con cinco repeticiones en un invernadero. Se evaluaron los parámetros de rendimiento de soja, tales como, peso seco del brote, raíz y total; altura de la planta, nitrógeno en el brote; número y peso seco de los nódulos; índice de clorofila en las hojas; cantidad de mazorcas por planta (NPPL); número de granos por pod (NGP); y número de granos por planta (NGPL). La adición de Ca + B aumentó significativamente NPPL, NGPL y NGP. El NPPL y NGPL se incrementaron significativamente con 600 mL ha-1 del inoculante. La dosis de 600 ml ha-1 del inoculante combinado con Ca + B estimuló significativamente NPPL, NGPL y NGP. Se concluye que la productividad de la soya se incrementó con la adición de 600 mL ha-1 de inoculante, en combinación con Ca y B.

scholarly journals Soil humidity as a productive conditioner of soybean culture through inoculation, co-inoculation and rooting

2020 ◽  
pp. 932-939
Author(s):  
Evandro Ademir Deak ◽  
Thomas Newton Martin ◽  
Glauber Monçon Fipke ◽  
Jessica Deolinda Leivas Stecca ◽  
Vinícius dos Santos Cunha
Keyword(s):  
Azospirillum Brasilense ◽  
Dry Mass ◽  
Sowing Dates ◽  
Soybean Plants ◽  
The Times ◽  
The Many ◽  
High Yields ◽  
Biological Nitrogen ◽  
Measured Water ◽  
Soybean Nodulation

In the soybean crop, the practice of inoculation is crucial for producing high yields. This is because biological nitrogen fixation (BNF) is the main supplier of the nutrient demand for this crop. However, a few environmental variables can also greatly influence the survival of the bacteria that control this process. In this context, the present work was performed to confirm the many ways in which soil moisture affects this process. In the field, we conducted two experiments at the times of the two sowing dates, 11/24/2015 and 12/17/2015, adopting the factorial 7 x 2 design, with four replications. The inoculation treatments included, non-inoculated (NI); not inoculated along with the nitrogen supplied at the 200 kg ha-1 (NI+N) dosage; inoculation with Bradyrhizobium [I (Brady)]; root enhancers (R); inoculation with Bradyrhizobium + root enhancers (I+R); co-inoculation with Bradyrhizobium + Azospirillum brasilense (I+Azo); co-inoculation with Bradyrhizobium + Azospirillum brasilense + root enhancers (I+Azo+R). The second factor included was the use or absence of a water jet (200 L ha-1) directed onto the seeds in the sowing furrow. Then estimations of the initial establishment of the plants, nodulation, and productivity components were measured. Water supplied to the sowing furrow had no effect on soybean nodulation and yield components. Co-inoculation promoted nodulation in soybean plants, particularly in dry mass of the nodules and number of nodules per plant.

scholarly journals PHOSPHATE FERTILIZATION EFFICIENCY IN SOYBEAN CULTIVARS INDICATED FOR CERRADO TROPICAL SOIL REGIONS

2019 ◽  
Vol 17 (3) ◽  
pp. 45
Author(s):  
Felipe Ferreira Da Silva ◽  
Deurimar Herênio Gonçalves Junior ◽  
Gisellya Da Silva Cruz ◽  
Wallysson Nascimento Lima ◽  
Roldão Carlos Andrade Lima ◽  
...  
Keyword(s):  
Phosphorus Deficiency ◽  
Block Design ◽  
Phosphate Fertilizer ◽  
Dry Mass ◽  
Average Height ◽  
Brazilian Cerrado ◽  
Tropical Regions ◽  
Randomized Complete Block Design ◽  
Phosphate Fertilization ◽  
Use Efficiency

Phosphorus deficiency (P2O5) is among the main abiotic stresses that limit soybean production in cerrado soils. Its low availability in soils, especially in the more weathered and acidic ones, the increased demand and its scarcity estimations leadto the need for the development of cultivars more efficient in the use of this mineral. This experiment was conducted under field conditions in the municipality of Imperatriz, state of Maranhão, Brazil, under planosol conditions, in a randomized complete block design, with treatments arranged in a 2x4 factorial scheme with four replicates, four P levels (0, 60, 120 and 180 kg ha-1), and two soy bean cultivars (BRS 333 RR and BRS 9180 IPRO) indicated for tropical regions or Brazilian cerrado. In this study, P2O5 efficiency use was evaluated based on plant height, shoot dry mass (SDM), pod dry mass (PDM) and number of pods (NP). BRS 333 RR cultivar obtained the highest efficiency with doses of 84.35 kg ha-1 and 94.46 kg.ha-1, producing 696,76.76g e 86,72.06g for SDM and PDM respectively, average height of94.15 cm with 123.98 kh.ha-1 and phosphate fertilizer use efficiency (FUE) of 13%

scholarly journals Phosphate fertilization on soils with improved fertility in the Brazilian Cerrado

2019 ◽  
Vol 37 (1) ◽  
pp. 39-46
Author(s):  
Luís Marcelo Mariussi ◽  
Rubson Da Costa Leite ◽  
Gilson Araújo de Freitas ◽  
Robson Da Costa Leite ◽  
Antônio Carlos Martins dos Santos ◽  
...  
Keyword(s):  
Phosphate Fertilizer ◽  
Phosphorus Fertilization ◽  
Dry Land ◽  
Phosphate Fertilization ◽  
Brazilian Soils ◽  
Macro And Micronutrients ◽  
Soybean Plants ◽  
Number Of Stems ◽  
High Doses ◽  
Pod Number

The practices of soil amendment and fertilization carried out over the years have allowed the improvement of the fertility in some of them in the Brazilian soils. The objective of this study was to evaluate the performance of soybean in response to phosphate fertilization in soil with improved fertility. The research was carried out during the 2015-2016 harvest season in a dry-land area in the municipality of São Desidério, Bahia. The experiment was arranged in randomized blocks, with five treatments and four replicates. Treatments were composed by doses of phosphate fertilizer (0, 70, 140, 210 and 280 kg P2O5 ha-1). The following variables were evaluated: plant height, height of insertion of the first pod, number of stems per plant, number of pods per plant, thousand grain weight, productivity, and the analysis of macro and micronutrients in the leaf. Soybean plants did not respond to phosphorus applied to soil with built fertility. Under the conditions of this study, phosphorus fertilization in soil with improved fertility did not promote productivity. Although the plants did not respond to foliar macro and micronutrients as a function of phosphate fertilization, there was no reduction of these in response to high doses.

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