scholarly journals EFFECTS OF SEED INOCULATION WITH Azospirillum brasilense AND NITROGEN DOSE ON OIL CONTENT OF CORN GRAINS

2019 ◽  
Vol 93 (3) ◽  
pp. 299
Author(s):  
Vanderlan Carneiro Dias ◽  
Joênes Mucci Peluzio ◽  
Maria Dilma De Lima
Keyword(s):  
Zea Mays ◽  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Oil Content ◽  
Content Increase ◽  
Biological Fixation ◽  
Tukey Test ◽  
Seed Inoculation ◽  
Biological Nitrogen ◽  
Corn Grains

ABSTRACT  Due to its high economical importance and the need of high amounts of nitrogen fertilizer, the corn crop demands further and deeper studies on biological nitrogen fixation trough bacterium Azospirillum brasilense. Therefore, this study aimed at assessing influence of inoculation of three different genotypes (Orion, A1 Bandeirante and AG-1051) with such bacterium in association with cover application of five different nitrogen doses on percentage oil content in the grains. Data were subjected to ANOVA and means compared by Tukey test at 5%. The inoculation of A. brasilense, with or without nitrogen fertilization, has promoted oil content increase in the grains. Orion genotype presented the greatest increase with the bacterium inoculation, as well as it was the most productive at the lowest nitrogen dosages assessed. High temperatures favored the increase in the oil content in the grains. Keywords: Zea mays, inoculation, biological fixation, oil EFEITOS DA INOCULAÇÃO COM Azospirillum brasilense E DOSE DE NITROGÊNIO SOBRE O TEOR DE ÓLEO DE MILHO RESUMODevido à sua grande importância econômica e necessidade de fertilizantes nitrogenados, a cultura do milho exige estudos mais aprofundados sobre a fixação biológica do nitrogênio pela bactéria Azospirillum brasilense. Portanto, este estudo teve como objetivo avaliar a influência da inoculação de três diferentes genótipos (Orion, A1 Bandeirante e AG-1051) com essa bactéria em associação com a aplicação de cinco diferentes doses de nitrogênio no teor percentual de óleo nos grãos. Os dados foram submetidos à ANOVA e as médias comparadas pelo teste de Tukey a 5%. A inoculação de A. brasilense, com ou sem adubação nitrogenada, promoveu aumento do teor de óleo nos grãos. O genótipo Orion apresentou o maior aumento com a inoculação da bactéria, bem como o mais produtivo nas menores dosagens de nitrogênio avaliadas. As temperaturas altas favorecem ou aumentam o teor de óleo nos grãos.           Palavras-chave: Zea mays, inoculação, fixação biológica, óleo

scholarly journals DEVELOPMENT OF CORN HYBRIDS (Zea mays) UNDER INOCULATION OF DIAZOTROPHIC BACTERIA AND NITROGEN FERTILIZATION

2019 ◽  
Vol 17 (1) ◽  
pp. 71
Author(s):  
João Paulo Kruger Reznick ◽  
Volnei Pauletti ◽  
Daniel Malheiro Nascimento ◽  
Marcus Vinicius Cremonesi
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Factorial Design ◽  
Chlorophyll Content ◽  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Dry Mass ◽  
Diazotrophic Bacteria ◽  
Corn Hybrids ◽  
Leaf Chlorophyll

<br /><table class="data" width="100%"><tbody><tr valign="top"><td class="value">The aim of this work was to evaluate the development of corn genotypes under the effect of inoculation with <em>Azospirillum brasilense</em> in association with nitrogen fertilization. The experimental design was completely randomized in a factorial design (5x2x2) with three replications. Five corn hybrids were used, combined with two doses of nitrogen (N) (without N and with 100 kg ha<span>-1</span> N) and with two inoculation levels of <em>A.brasilense</em> (without and with inoculation). Plant stature and stem diameter at stadiums V8 and R1, leaf chlorophyll content at stadium R1 and dry mass at stadium R2 were evaluated. It was observed that when there was variation in the evaluated parameters, this was due to the different genetic materials and mainly due to the application of N. Inoculation with <em>A.brasilense</em> was not effective in altering the corn development.</td></tr></tbody></table>

Changes in the Technology of Soybean Production

2013 ◽  
pp. 1-21
Author(s):  
Dozet Gordana ◽  
Cvijanovic Gorica ◽  
Djukic Vojin
Keyword(s):  
Nitrogen Fertilization ◽  
Molecular Nitrogen ◽  
Soybean Seed ◽  
Limiting Factor ◽  
Content Increase ◽  
Atmospheric Nitrogen ◽  
Biological Fixation ◽  
High Yields ◽  
Different Doses

Nitrogen is the key element of yield and the most limiting factor in achieving high yields. Nitrogen fertilization is specific because mineral nitrogen, the available form of nitrogen for the plant in the soil, is on one hand subject to leaching losses due to its mobility in the soil and denitrification, and on the other hand to the content increase due to mineralization of soil organic matter. To encourage more intensive adoption of atmospheric nitrogen in nitrogen-fixing, the presence of cobalt and molybdenum is necessary. Molybdenum is required for the binding of atmospheric nitrogen by Azotobacter and plays an important role in the fixation of N2. Legumes treated with molybdenum have a larger amount of fixed nitrogen. Cobalt is relevant to the process of biological fixation of molecular nitrogen. The role of cobalt in biological fixation of molecular nitrogen is specific, and it cannot be replaced in the process by other trace elements. Inoculation of soybean seed with microbiological fertilizer and seed treatment with cobalt and molybdenum, as well as the use of corn crop fertilization with different doses of nitrogen, has a different impact on the yield and properties of soybeans.

scholarly journals Effect of seed inoculation with Azospirillum brasilense and nitrogen fertilization rates on maize plant yield and silage quality

2017 ◽  
Vol 46 (9) ◽  
pp. 722-730 ◽  
Author(s):  
Fernando Reimann Skonieski ◽  
Julio Viégas ◽  
Thomas Newton Martin ◽  
José Laerte Nörnberg ◽  
Gilmar Roberto Meinerz ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Maize Plant ◽  
Plant Yield ◽  
Fertilization Rates ◽  
Seed Inoculation ◽  
Silage Quality

scholarly journals USO RACIONAL DA ÁGUA E DA ADUBAÇÃO NITROGENADA NO MILHO (Zea Mays L.) IRRIGADO POR GOTEJAMENTO EM CULTIVO DE OUTONO/INVERNO

Irriga ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 296-314
Author(s):  
Paulo Ferreira da Silva ◽  
Marcos Anonio Liodoro dos Santos ◽  
João Victor Ribeiro da Silva de Souza ◽  
Douglas Marcelo Pinheiro da Silva ◽  
Jéssica Maiara de Souza Ferrari ◽  
...  
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Nitrogen Fertilizer ◽  
Nitrogen Fertilization ◽  
Zea Mays L ◽  
Dolomitic Limestone ◽  
Geodetic Coordinates ◽  
Supplementary Irrigation ◽  
E Mail ◽  
Corn Grains

USO RACIONAL DA ÁGUA E DA ADUBAÇÃO NITROGENADA NO MILHO (Zea Mays L.) IRRIGADO POR GOTEJAMENTO EM CULTIVO DE OUTONO/INVERNO1     PAULO FERREIRA DA SILVA2; MARCOS ANTONIO LIODORO DOS SANTOS3; JOÃO VICTOR RIBEIRO DA SILVA DE SOUZA4; DOUGLAS MARCELO PINHEIRO DA SILVA5; JÉSSICA MAIARA DE SOUZA FERRARI6 E JOÃO CARLOS CURY SAAD7   1 Trabalho retirado da tese intitulada:” Manejo da irrigação e da adubação nitrogenada no milho cultivado no outono/inverno em Botucatu-SP”, do autor Paulo Ferreira da Silva2 2 Doutor em Agronomia Irrigação e Drenagem, Rua Elpídio Coelho, 427, Centro, 64750-000, Paulistana, PI, Brasil, e-mail: [email protected] 3 Doutor em Agronomia, Departamento de vendas e projetos, Irrimar irrigação e serviços LTDA, Av. Antares 720, Recanto dos Vinhais, 65070-070, São Luís, MA, Brasil, e-mail: [email protected] 4 Doutor em Agronomia Irrigação e Drenagem, Departamento de Engenharia rural, FCA - UNESP, Rua José Barbosa de Barros, 1780, Fazenda Lageado, 18603-970, Botucatu, SP, Brasil, e-mail: [email protected] 5 Professor Doutor, Instituto de Educação Agricultura e Ambiente, Universidade Federal do Amazonas, Rua 29 de Agosto, 786, Centro. 69800-000, Humaitá, AM, Brasil, e-mail: [email protected] 6 Mestre em Agronomia Irrigação e Drenagem, Faculdade de Ciências e Engenharia, UNESP, Rua Domingos da Costa Lopes, 780, Jardim Itaipu, 17602-496, Tupã, SP, Brasil, e-mail: [email protected] 7 Professor Doutor, Departamento de Engenharia Rural e Socioeconomia, FCA - UNESP, Av. Universitária, 3780, Altos do Paraíso,18610-034, Botucatu, SP, Brasil, e-mail: [email protected]     1 RESUMO   Este estudo foi realizado para investigar o efeito da irrigação e doses de fertilizante nitrogenado sobre a produtividade do milho cultivado entre os meses de abril a outubro de 2016 e 2017. O experimento foi conduzido na Fazenda Lageado na área experimental localizada nas coordenadas geodésicas 22°51'07" Sul, 48°25'45,07" Oeste e altitude de 764 m. A acidez do solo foi corrigida com calcário dolomítico apenas no ano de 2016 e a semeadura realizada no espaçamento de 0,85 x 0,20 m entre as linhas e plantas, respectivamente, com adição de 300 kg de NPK 04-30-10 aplicado no sulco. O delineamento experimental usado foi em blocos casualizados, em esquema fatorial 5 x 5, com parcela subdividida sendo cinco níveis de irrigação correspondendo a 50, 75, 100, 125 e 150% da evapotranspiração diária da cultura (ETc) e cinco doses de adubação nitrogenada nos níveis 0, 22,5, 45, 67,5 e 90 kg ha-1 de N, utilizando a uréia como fonte de N em quatro repetições. A produtividade de grãos de milho foi maior utilizando a lâmina com 100% da ETc nos anos de 2016 e 2017. Para o fator adubação nitrogenada, o maior rendimento foi obtido no nível utilizando 90 kg ha-1 de N.   Palavras-chave: economia de água, irrigação suplementar, produtividade de grãos     SILVA, P. F; SANTOS, M. A. L; SOUZA, J. V. R. S.; SILVA, D. A. P.; FERRARI, J. M. S.; SAAD, J. C. C. RATIONAL USE OF WATER AND NITROGENATED FERTILIZATION IN CORN (Zea Mays L.) IRRIGATED BY DRIPPING IN AUTUMN / WINTER CULTIVATION     2 ABSTRACT   This study was carried out to investigate the effect of irrigation and nitrogen fertilizer doses on the productivity of corn grown between April and October 2016 and 2017. The experiment was conducted at Fazenda Lageado in the experimental area located at geodetic coordinates 22°51'07" South, 48°25'45.07" West and altitude of 764 m. The soil was corrected with dolomitic limestone only in 2016 and the sowing carried out at a spacing of 0.85 x 0.20 m between the lines and plants, respectively, with the addition of 300 kg of NPK 04-30-10 applied in the furrow. The experimental design used was randomized blocks, in a 5 x 5 factorial scheme, with a subdivided plot with five levels of irrigation corresponding to 50, 75, 100, 125 and 150% of the daily culture evapotranspiration (ETc) and five doses of nitrogen fertilization at levels 0; 22.5; 45; 67.5 and 90 kg ha-1 of N, using urea as a source of N in four replications. The productivity of corn grains was higher using depth with 100% ETc in the years 2016 and 2017. For the nitrogen fertilization factor, the highest yield was obtained at the level using 90 kg ha-1 of N.                                                             Keywords: water saving, supplementary irrigation, grain yield

scholarly journals Performance of beans after inoculation with azospirillum brasilense and rhizobium tropici, and nitrogen and molybic fertilizations under amazonian conditions

2020 ◽  
Vol 41 (4) ◽  
pp. 1177
Author(s):  
Luiz Cobiniano de Melo Filho ◽  
Ivanildo Guilherme Henrique ◽  
Orivaldo Arf ◽  
Darllan Junior Luiz Santos Ferreira de Oliveira ◽  
Antonio Anicete de Lima ◽  
...  
Keyword(s):  
Grain Yield ◽  
Azospirillum Brasilense ◽  
Foliar Application ◽  
Block Design ◽  
Plant Population ◽  
Rhizobium Tropici ◽  
Biological Fixation ◽  
Seed Inoculation ◽  
Randomized Complete Block Design ◽  
Pod Number

Beans are nutrient-demanding plants, with a high demand for nitrogen (N). Nitrogen biological fixation (NBF) is probably the best solution to meet this demand, especially considering losses in the soil-plant-atmosphere system. Molybdenum (Mo), present in the enzymes nitrogenase and nitrate reductase, is fundamental in the metabolism of N, including NBF. This study aims to evaluate if bean seed inoculation with Azospirillum brasilense, Rhizobium tropici, and possible interactions with nitrogen topdressing and molybdenum leaf application, may affect winter bean development and yield. A randomized complete block design was used in a 4x2x2 factorial scheme. Plant population, production components, and grain yield were evaluated in two crop seasons (2017 and 2018). Seed inoculation with A. brasilense, when associated with 30 kg ha-1 N topdressing, increased plant population, pod number per plant and grain yield. Nitrogen topdressing is key to increasing winter bean productivity, regardless of inoculation or Mo foliar application.

scholarly journals MÉTODOS DE FORNECIMENTO DE NITROGÊNIO PARA MELHORAR A PRODUTIVIDADE NA CULTURA DO FEIJOEIRO IRRIGADO NO CERRADO MATO-GROSSENSE

Nativa ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 252
Author(s):  
Anderson Lange ◽  
Edilson Cavalli ◽  
Ewerton Alves Carleto ◽  
Antonio Carlos Buchelt ◽  
Cassiano Cavalli ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Experimental Design ◽  
Phaseolus Vulgaris ◽  
Nitrogen Fertilization ◽  
No Tillage ◽  
Biological Fixation ◽  
Tillage System ◽  
Biological Nitrogen ◽  
Bean Crop ◽  
Direct Sowing

O nitrogênio é um dos elementos mais requerido pela cultura do feijoeiro e seu fornecimento à planta pode se dar por meio de adubação nitrogenada e por meio da fixação biológica. O presente estudo objetivou avaliar estratégias de manejo da adubação nitrogenada e a capacidade da associação entre inoculante e Co+Mo em substituir parcialmente o N aplicado na cultura do feijoeiro semeado em sistema irrigado. O estudo foi desenvolvido em Sinop – MT, no período de junho a outubro de 2011, época denominada inverno, sob pivô central em sistema de semeadura direta, em um Latossolo Vermelho-amarelo Distrófico. O delineamento experimental utilizado foi de blocos casualizados com 15 tratamentos e 4 repetições. Os tratamentos foram constituídos pela combinação de doses e fontes de N, inoculação com Rhizobium tropicci e tratamento de sementes com Co e Mo. Em relação aos tratamentos não se observou diferença para altura da inserção da primeira vagem e número de grãos por vagem. A produtividade foi maior nos tratamentos que receberam N. A associação da inoculação com baixas doses de N é efetiva para suprir as demandas da cultura, se igualando a elevadas doses de N. A produtividade apresentou correlação positiva e significativa com a maioria das características avaliadas.Palavras-chave: Phaseolus vulgaris, manejo do nitrogênio, semeadura direta na palha, fixação biológica de nitrogênio, cultivo de inverno. METHODS OF SUPPLY OF NITROGEN TO IMPROVE PRODUCTIVITY IN THE CULTURE OF IRRIGATED BEANS IN SAVANNA MATO-GROSSENSE ABSTRACT:Nitrogen is one of the elements most required by the bean crop and its supply to the plant can occur through nitrogen fertilization and through biological fixation. The objective of this study was to evaluate strategies of nitrogen fertilization management and the ability of the association between inoculant and Co + Mo to partially replace the N applied in the bean crop planted in irrigated system. The study was developed in Sinop-MT, from June to October 2011, a period denominated winter, under central pivot in a no-tillage system, in a Red-yellow Latosol. The experimental design was a randomized block with 15 treatments and 4 replicates. The treatments consisted of the combination of rates and sources of N, inoculation with Rhizobium tropicci and treatment of seeds with Co and Mo. Regarding the treatments, no difference was observed in the height of the first pod insertion and number of grains per pod. The productivity was higher in the treatments that received N. The association of the inoculation with low rates of N is effective to meet the demands of the crop, equaling to high rates of N. The productivity showed a positive and significant correlation with most of the evaluated characteristics.Keywords: Phaseolus vulgaris, management of nitrogen, direct sowing in straw, biological nitrogen fixation, winter cropping. DOI:

scholarly journals Technical and economic feasibility of irrigated wheat as a function of nitrogen doses, sources, and inoculation with Azospirillum brasilense

2018 ◽  
Vol 39 (1) ◽  
pp. 51
Author(s):  
Fernando Shintate Galindo ◽  
Marcelo Carvalho Minhoto Teixeira Filho ◽  
Maria Aparecida Anselmo Tarsitano ◽  
Salatier Buzetti ◽  
José Mateus Kondo Santini ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Economic Feasibility ◽  
Economic Viability ◽  
Urease Inhibitor ◽  
Mineral N ◽  
Wheat Cultivation ◽  
Grain Productivity ◽  
Irrigated Wheat ◽  
Biological Nitrogen

Azospirillum brasilense is a bacterium known for its biological nitrogen fixation (BNF) in wheat crops. However, there is a lack of comprehensive research defining how much mineral N should be applied to maximize the efficiency of BNF and attain high, economically sustainable yields. Moreover, it would be interesting to investigate whether adding urea with N- (n-butyl) thiophosphoric triamide (NBPT) urease inhibitor might increase BNF in grasses. The objective was to study the effect of inoculation with A. brasilense, associated with varying doses and sources of N, and economically evaluating the yield of irrigated wheat. The experiment was conducted in Selvíria - MS in crop years 2014 and 2015 in Oxisol soil type that was not-tilled. The experimental design was a randomized block with four replications, in a 2 × 5 × 2 factorial scheme, where 2 N sources (urea and Super N - urea with urease inhibitor enzyme), 5 nitrogen fertilization doses in top-dressing (0, 50, 100, 150, and 200 kg ha-1), were applied to wheat crops with or without the inoculation of A. brasilense. Our results showed that the supply of N through Super N was not economically superior to the use of conventional urea; therefore, we recommend the use of urea because of the ease of acquisition. The application of 140 kg ha-1 of N combined with inoculation with A. brasilense showed higher grain yield. However, the 50 kg ha-1 dose of urea in the absence of inoculation provided greater economic viability in wheat cultivation, but was not sufficient to ensure high profitability with grain productivity.

Seed inoculation with Azospirillum brasilense and nitrogen fertilization for no‐till cereal production

2020 ◽  
Author(s):  
Eduardo Fávero Caires ◽  
Angelo Rafael Bini ◽  
Leonardo Felipe Camargo Barão ◽  
Adriano Haliski ◽  
Vanderson Modolon Duart ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Seed Inoculation ◽  
No Till ◽  
Cereal Production

scholarly journals BLACK OAT AND RYEGRASS INOCULATED WITH Azospirillum brasilense IN CROP-LIVESTOCK SYSTEM

2021 ◽  
Vol 34 (2) ◽  
pp. 276-286
Author(s):  
MARCOS DA SILVA BRUM ◽  
VINICIUS DOS SANTOS CUNHA ◽  
THOMAS NEWTON MARTIN ◽  
PEDRO GARDIN ALESSIO ◽  
GUILHERME ARISMENDI ALMEIDA
Keyword(s):  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Grazing Intensity ◽  
Dry Mass ◽  
Total Production ◽  
Annual Ryegrass ◽  
Structural Components ◽  
Pasture Management ◽  
Seed Inoculation ◽  
Livestock System

ABSTRACT The success of the integrated crop-livestock system depends on the correct pasture management, particularly regarding nitrogen fertilization and grazing intensity. The objective of this study was to evaluate the total production of forage and the proportion of the botanical and structural components of black oat and annual ryegrass mixture. The experimental design was randomized blocks with three replicates and the treatments were arranged in a three-factorial scheme: seed inoculation (with and without Azospirillum brasilense inoculation), grazing management (conventional grazing, where the animals were kept in pasture with no control of pasture height; 30, 20 and 10 cm at the end of grazing, and a control without grazing), and nitrogen fertilization (0, 50 and 100 kg nitrogen ha-1). In treatments with pasture heights where grazing ended at 30, 20 and 10 cm, the height was monitored and biomass was collected when the animals entered and exited the plots. Manual separation of the components was used to determine the dry mass of green leaves, stems, senescent material and inflorescence. Total dry mass production was obtained based on the initial forage mass plus the daily accumulation rates. The proportion of structural components varied according to the different grazing managements, nitrogen doses and inoculation with Azospirillum brasilense. Biomass production of black oat and ryegrass mixture was increased by nitrogen application and Azospirillum brasilense inoculation.

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