scholarly journals AGRONOMIC PERFORMANCE OF MAIZE UNDER Azospirillum brasilense INOCULATION AND TOP-DRESSING NITROGEN FERTILIZATION

2020 ◽  
Vol 19 ◽  
pp. 15
Author(s):  
VINÍCIUS BALEIRO FERNANDES ◽  
FABIO LUIZ CHECCHIO MINGOTTE ◽  
ORLANDO FERREIRA MORELLO ◽  
ANDERSON PRATES COELHO ◽  
LEANDRO BORGES LEMOS
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Block Design ◽  
Nitrogen Fertilizers ◽  
Agronomic Performance ◽  
Positive Effects ◽  
Viable Cells ◽  
Randomized Block Design ◽  
Pre Treatment

Maize inoculation with bacteria of the genus Azospirillum can reduce the consumption of nitrogen fertilizers to obtain maximum grain yield. In this context, the aim was to evaluate the effect of inoculation with Azospirillum brasilense associated with nitrogen fertilization on the maize agronomic performance. A randomized block design was used in a split-plot scheme with four replicates. Four inoculation managements with Azospirillum brasilense (T0 - control without inoculation; TC2 - seed box inoculation, 200x108 viable cells ha-1; TC3 - seed box inoculation, 400x108 viable cells ha-1; TS1 - previous inoculation of the seeds, 600x108 viable cells ha-1) associated with four top-dressing N doses (0, 60, 120 and 180 kg ha-1), applied at maize stage V6 by urea. Inoculation with Azospirillum brasilense associated with top-dressing nitrogen fertilization increases the number of grain rows per ear, number of grains per row, number of grains per ear and grain yield of maize, mainly due to its positive effects on plant nutrition. Managements with seed box inoculation with 400x108 viable cells per ha (TC3) and inoculation in seed pre-treatment (TS1) are the most recommended for maize.

scholarly journals AADUBAÇÃO NITROGENADA E INOCULAÇÃO COM Azospirillum brasilense EM CEVADA

Nativa ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 01 ◽  
Author(s):  
Gustavo Ribeiro Barzotto ◽  
Sebastião Ferreira Lima ◽  
Osvaldir Feliciano Santos ◽  
Gabriel Luiz Piati ◽  
Carlos Roberto Wassolowski
Keyword(s):  
Hordeum Vulgare ◽  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Block Design ◽  
Dry Mass ◽  
Plant Production ◽  
Randomized Block Design ◽  
Productivity Gain ◽  
Barley Grains

A cevada constitui uma importante cultura no Brasil devido, principalmente, a utilização de seu grão na produção de cervejas. O objetivo deste trabalho foi avaliar os efeitos da adubação nitrogenada e da inoculação com Azospirillum brasilense em cevada. O experimento foi instalado em campo, utilizando o delineamento em blocos casualizados em esquema fatorial, sendo quatro doses de nitrogênio (0, 40, 80 e 120 kg ha-1) na presença ou ausência de inoculação de sementes com A. brasilense e três repetições. Foram avaliadas características de crescimento e massa seca de planta, componentes de produção, teor de N e produtividade de grãos. A maior produtividade de grãos foi alcançada com 66 kg ha-1 de N, sem a aplicação da bactéria. Concluiu-se que o uso de A. brasilense aumenta a produtividade de grãos de cevada na ausência da adubação nitrogenada, mas não suplanta o ganho de produtividade apenas com o uso do N em doses superiores. A severidade de B. sorokidiana foi favorecida com a aplicação de A. brasilense nas maiores doses de N. A inoculação com A. brasilense é uma alternativa viável para aumentar a produtividade de grãos de cevada, caso se opte pelo cultivo sem fertilização mineral nitrogenada.Palavra-chave: Hordeum vulgare, bactérias diazotróficas, malte. NITROGEN FERTILIZATION AND INOCULATION WITH AZOSPIRILLUM BRASILENSE IN BARLEY ABSTRACT:The barley is an important crop in Brazil, mainly due to the use of its grain in the production of beers. The objective of this work was to evaluate the effects of nitrogen fertilization and inoculation with Azospirillum brasilense on barley. The experiment was carried out in the field, using a randomized block design in a factorial scheme, with four nitrogen doses (0, 40, 80 and 120 kg ha-1) in the presence or absence of seed inoculation with A. brasilense and three replications. Growth characteristics and dry mass of the plant, production components, N content and grain yield were evaluated. The highest grain yield was achieved with 66 kg ha-1 of N, without application of the bacteria. It was concluded that the use of A. brasilense increases the yield of barley grains in the absence of nitrogen fertilization, but does not supplant the productivity gain only with the use of N in higher doses. The B. sorokidiana severity was favored by the application of A. brasilense in the highest N doses. The inoculation with A. brasilense is a viable alternative to increase the yield of barley grains, in case of cultivation without nitrogen fertilization.Keywords: Hordeum vulgare, diazotrophic bacteria, malt. DOI:

scholarly journals Response of dual-purpose wheat to nitrogen fertilization and seed inoculation with Azospirillum brasilense

2019 ◽  
Vol 43 ◽  
Author(s):  
Mauricio Pase Quatrin ◽  
Clair Jorge Olivo ◽  
Gabriela Descovi Simonetti ◽  
Vinicius Felipe Bratz ◽  
Guilherme Librelotto de Godoy ◽  
...  
Keyword(s):  
Grain Yield ◽  
Azospirillum Brasilense ◽  
Block Design ◽  
Forage Yield ◽  
Nitrogen Fertilizers ◽  
Leaf Biomass ◽  
Plant Growth Promoting Bacteria ◽  
Dual Purpose ◽  
Straw Yield ◽  
Nitrogen Rates

ABSTRACT The use of inoculants containing plant growth-promoting bacteria is an alternative to increase the efficiency of nitrogen fertilizers. Studies evaluating the effects of inoculation on forage yield, straw yield, and grain yield in dual-purpose wheat cultivars are scarce. This study aimed to evaluate the forage yield and grain yield in dual-purpose wheat inoculated with Azospirillum brasilense and fertilized with increasing nitrogen rates during two agricultural years (2016-2017) under cutting management. The trial was carried out in a completely randomized block design with four replicates, using a 2 x 4 factorial arrangement. The factors were the inoculation (control or A. brasilense) and nitrogen rates (0, 50, 100 and 150 kg ha-1 of N). Forage, grain and straw yield, and number of tillers were evaluated. Forage yield differed between treatments with inoculation and without inoculation, 3952 and 3350 kg DM ha-1, respectively. There was no effect of inoculation on grain yield. The forage and leaf biomass yield, the number of tillers and straw yield increased with inoculation.

scholarly journals Agronomic Performance of Soybean With Seeds Treated With an Algae Extract Base Biostimulant

2020 ◽  
Vol 13 (1) ◽  
pp. 147
Author(s):  
Gabriel Bressiani Melo ◽  
Alessandro Guerra da Silva ◽  
Adriano Perin ◽  
Guilherme Braga Pereira Braz ◽  
Christiano Lima Lobo de Andrade
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Natural Compounds ◽  
Soybean Seeds ◽  
Agronomic Performance ◽  
Grain Yields ◽  
Beneficial Effects ◽  
Agronomic Characteristics ◽  
Organic Components ◽  
Randomized Block Design

The use of biostimulants in the treatment of soybean seeds can provide beneficial effects on the crop due to the synergism between the organic components present in products from natural compounds. Due to the scarcity of results of research on biostimulants in the treatment of soybean seeds, the objective of this study was to evaluate the effects of doses of a biostimulant in the treatment of seeds, on agronomic characteristics, productivity components and profitability of soybean culture. Therefore, two experiments were carried out in the field in the 2016/17 and 2017/18 harvests, using a randomized block design with six replications and four treatments referring to doses of 0.00; 0.05; 0.10; and 0.15 L 100 kg seeds-1. The agronomic characteristics of soybeans, grain yield and profitability of using the biostimulant were evaluated. From the obtained results, it can be seen that the dose of 0.15 L 100 kg seeds-1 provided greater profitability in both harvests. In addition, doses above 0.12 L 100 kg seed-1 provide higher grain yields and a higher grain mass, in addition to other productivity components.

scholarly journals Does the nitrogen application associated with Azospirillum brasilense inoculation influence corn nutrition and yield?

2019 ◽  
Vol 23 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Elton M. de Souza ◽  
Fernando S. Galindo ◽  
Marcelo C. M. Teixeira Filho ◽  
Paulo R. T. da Silva ◽  
Arthur C. dos Santos ◽  
...  
Keyword(s):  
Grain Yield ◽  
Azospirillum Brasilense ◽  
Nutritional Value ◽  
Block Design ◽  
Brazilian Cerrado ◽  
Nitrogen Application ◽  
No Till ◽  
Randomized Block Design ◽  
Set Up ◽  
Corn Grain

ABSTRACT The aim of this study was to investigate the synergistic effect between inoculation with Azospirillum brasilense and nitrogen application, thus enabling a higher efficiency of nitrogen fertilization, as evaluated by nutritional value, components production, and grain yield of irrigated corn. The experiment was conducted in Selvíria, MS, Brazil, under a no-till system, on an Oxisol in the Brazilian Cerrado. The experiment was set up in a randomized block design with four replications, in a 4 × 2 factorial arrangement: four patterns of nitrogen application [application of 30 kg ha-1 of N at sowing and 150 kg ha-1 as cover (30 + 150); 30 kg ha-1 of N at sowing, split into two applications of 75 kg ha-1 as cover (30 + 75 + 75); 180 kg ha-1 of N at sowing (180); and 150 kg ha-1 of N at sowing and 30 kg ha-1 as cover (150 + 30)]; with and without inoculation of the seeds with A. brasilense. The application of 30 kg ha-1 of N at sowing and a single application of 150 kg ha-1 or two applications of 75 kg ha-1 in topdressing, inoculated with Azospirillum brasilense provided better nutrition and development, with a positive reflection on irrigated corn grain yield in the Brazilian Cerrado.

scholarly journals Nitrogênio e Azospirillum brasilense no desenvolvimento inicial da cana-de-açúcar

2020 ◽  
Vol 16 (2) ◽  
pp. 72-81
Author(s):  
Michaela Carolina Gonçalves ◽  
Kátia Cristina da Silva ◽  
Carlos Eduardo da Silva Oliveira ◽  
Fábio Steiner
Keyword(s):  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Block Design ◽  
Saccharum Officinarum ◽  
Linear Increase ◽  
N Fertilizer ◽  
Application Rates ◽  
Randomized Block Design ◽  
Matter Production ◽  
Number Of Leaves

A study was conducted with the objective of investigating the effects of the interaction between the inoculation of the pre-sprouted seedlings with Azospirillum brasilenseand the nitrogen fertilization in topdressing on the development of sugarcane plants(Saccharum officinarum). Pre-sprouted sugarcane seedlings, produced from 3.0 cm long mini-stems of the RB867515 variety, were transplanted 25 days after sprouting into 12 L plastic pots. The treatments were arranged in a randomized block design, in a 2 × 5 factorial scheme: two inoculation treatments [without (control) and inoculation with Azospirillum brasilense] and five application rates of N fertilizer in topdressing (0, 30, 60, 90 and 120 mg dm–3of N), with four repetitions. The inoculation with A. brasilensewas carried out in transplanting the seedlings using 4 mL of the inoculum AzoTotal® per seedling, containing the strains AbV5 and AbV6. The nitrogen fertilization in topdressing was performed at 20 days after transplanting the seedlings as urea (45% of N). The results reported that the application of N fertilizer rates in topdressingresulted in a linear increase in plant height, stem diameter, number of leaves per plant, number of tillers and dry matter production of plants inoculated with A. brasilense.When the plants were not inoculated with A. brasilense, nitrogen fertilization resulted in an increase also in the number of leaves and tillers per plant. The use of A. brasilenseinoculation in pre-sprouted sugarcane seedlings has a beneficial effect on the development of plants only when associated with nitrogen fertilization in topdressing. Sugarcane plants not fertilized with N have a negative response to inoculation with A. brasilense, indicating the occurrence of possible phytotoxic effects on plant development up to 60 days after transplanting.

scholarly journals Nitrogen fertilization and leaf spraying with Azospirillum brasilense in wheat: effects on mineral nutrition and yield

2020 ◽  
Vol 19 (4) ◽  
pp. 483-493
Author(s):  
Marcos Renan Besen ◽  
Antonio Feijo Goes Neto ◽  
Michel Esper Neto ◽  
Eder Junior de Oliveira Zampar ◽  
Eunápio José de Oliveira Costa ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Management Practices ◽  
Block Design ◽  
Wheat Crop ◽  
Plant Nitrogen ◽  
Randomized Block Design ◽  
Calcium Magnesium ◽  
Use Efficiency ◽  
N Use

The use of Azospirillum brasilense has the potential to improve plant nitrogen (N) use efficiency, while a better understanding of alternative management practices with inoculation is necessary. The aim was to examine the effects of the leaf application of A. brasilense in association with nitrogen fertilization on the wheat crop. The experiment was conducted in Lidianópolis, Paraná, Brazil, in a completely randomized block design with four replications. The treatments included four doses of A. brasilense for leaf application (0, 200, 400, and 600 ml ha-1) and four doses of N (0, 40, 80, and 120 kg N ha-1). The nutritional content, yield components, quality, and yield of the wheat crop were evaluated. There was no interaction among the factors, nor did the treatments have an isolated effect on spike length, the number of spikelets per spike, spikes per m2, thousand grain weight, and test weight. However, doses of A. brasilense increased calcium and magnesium absorption at 283 and 380 ml ha-1, respectively. Similarly, nitrogen application increased the content of calcium, magnesium, and copper in the leaf at 61, 47, and 49 kg N ha-1, respectively. Nitrogen also increased the number of grains per spike and yield at 56 and 54 kg N ha-1, respectively. Yield correlated with the number of grains per spike and the manganese and copper content in the leaf. The results demonstrate that the inoculation of leaves with A. brasilense favored a higher absorption of divalent cationic macronutrients and that N was fundamental to increasing the yield, with the best responses observed between 47 and 61 kg ha-1.

scholarly journals Maize crop yield in function of salinity and mulch

2021 ◽  
Vol 25 (12) ◽  
pp. 840-846
Author(s):  
Francisco H. R. Costa ◽  
Geovana F. Goes ◽  
Murilo de S. Almeida ◽  
Clarissa L. Magalhães ◽  
José T. M. de Sousa ◽  
...  
Keyword(s):  
Grain Yield ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Agronomic Performance ◽  
Maize Crop ◽  
Randomized Block Design ◽  
Salinity Levels ◽  
Maize Plants ◽  
Maize Grain

ABSTRACT Irrigation with saline water affects the agronomic performance of the maize crop; however, the use of vegetal mulch may mitigate salt stress and promote an increase in yield. In this way, this study aimed to evaluate the grain yield of the maize plants submitted to different water salinity levels in the presence and absence of mulch. The experiment was conducted in a randomized block design arranged in a 2 × 2 factorial scheme. The first factor was the salinity of the irrigation water (1.0 and 4.0 dS m-1) and the second, with and without mulch, and five replicates. The variables analyzed were: unhusked ear mass, husked ear mass, cob mass, straw mass, husked ear diameter, husked ear length, and yield. The irrigation water with higher electrical conductivity affects negatively the ear mass with and without straw, ear diameter and ear length. The use of vegetation cover on the soil increased the unhusked ear mass with and without straw, ear diameter and length. The water with higher salinity (4.0 dS m-1) reduces the maize grain yield but with less intensity in the presence of mulch.

scholarly journals AGRONOMIC PERFORMANCE OF COWPEA CULTIVARS DEPENDING ON SOWING SEASONS IN THE CERRADO BIOME

2017 ◽  
Vol 30 (2) ◽  
pp. 361-369 ◽  
Author(s):  
FERNANDO DA SILVA ALMEIDA ◽  
FÁBIO LUIZ CHECCHIO MINGOTTE ◽  
LEANDRO BORGES LEMOS ◽  
MÁRCIO JOSÉ DE SANTANA
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Plant Population ◽  
Agronomic Performance ◽  
Grain Yields ◽  
Cerrado Biome ◽  
Cowpea Cultivars ◽  
Randomized Block Design ◽  
Full Flowering ◽  
Pod Length

ABSTRACT The objective of this work was to assess the agronomic performance of cowpea cultivars depending on sowing seasons in the Cerrado biome. Thus, an experiment was conducted in Uberaba, State of Minas Gerais, Brazil, in a complete randomized block design, in a 6x3 factorial arrangement, using six cowpea cultivars (BRS-Itaim, BRS-Guariba, BRS-Potengi, BRS-Cauamé, BRS-Novaera and BRS-Tumucumaque) and three sowing seasons (Dec 14, 2012; Jan 14, 2013; and Feb 14, 2013), with four replications. The interaction between the cultivars and sowing seasons was assessed regarding the number of days for full flowering, number of days for pod maturation, number of trifoliate leaves, height of the first pod -bearing node, pod length, number of pods per plant, final plant population, 100-grain weight and grain yield. The cowpea cultivars sown in December produced the lowest numbers of pods per plant and grains per pod, resulting in the lowest grain yields. The cultivar BRS-Tumucumaque had the highest grain yield in the January sowing. The highest grain yields were found in the February sowing, especially when the cultivars BRS-Itaim (3,439 kg ha-1), BRS-Novaera (3,435 kg ha-1), BRS-Guariba (3,168 kg ha-1) and BRS-Potengi (3,107 kg ha-1) was used.

scholarly journals Efficiency in nitrogen management using conventional and transgenic technology in the cultivation of maize

2021 ◽  
Vol 7 ◽  
pp. 1-12
Author(s):  
Ivan Ricardo Carvalho ◽  
Márcio Peter ◽  
Gustavo Henrique Demari ◽  
Francine Lautenchleger ◽  
Filipe Selau Carlos ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Block Design ◽  
Maize Yield ◽  
Nitrogen Partitioning ◽  
Transgenic Technology ◽  
Maize Crop ◽  
Randomized Block Design ◽  
Genetic Technologies ◽  
Set Up

The objective to evaluate the maize yield components as a function of the top-dressing nitrogen partitioning in maize plants with conventional and transgenic technology. The experiment was carried out in the agricultural crops of 2012/2013 and 2013/2014, in the municipality of Tenente Portela-RS, Brazil. The experiment was set up in a randomized block design in a factorial scheme with two genetic technologies x 11 nitrogen fertilization treatments, arranged in three replications. The treatments were composed of top-dressing applications in the phenological stages V2 - two fully expanded leaves, (V2), V4 - four fully expanded leaves, (V4), V6 - six fully expanded leaves (V6) and V8 - with eight fully expanded leaves (V8) and split applications in V2+V4; V2+V6; V2+V8; V4+V6; V4+V8; V6+V8; and V2+V4+V6+V8. There was interaction between genetic technologies and levels of nitrogen fertilization in the maize crop. The highest grain yield was obtained with conventional technology because it presented plants with greater prolificacy, ear diameter and number of grains per row. Grain yield was superior with nitrogen fertilization in V4 and in nitrogen splitting in the V4 + V6, V4 + V8 and V2 + V4 + V6 + V8 stages.

scholarly journals Assessment of the Agronomic Performance of Two Varieties of Soybean as Influence by Time of Introduction of Maize and Cropping Pattern

2015 ◽  
Vol 31 ◽  
pp. 36-46
Author(s):  
M.M. Degri ◽  
Philip O. Osang ◽  
I.B. Richard
Keyword(s):  
Grain Yield ◽  
Field Experiments ◽  
Block Design ◽  
Cropping Pattern ◽  
Agronomic Performance ◽  
Soybean Variety ◽  
Land Equivalent Ratio ◽  
Cropping Patterns ◽  
Randomized Block Design ◽  
The University

Field experiments were conducted to assess the effect of time of introduction of maize and cropping pattern on two varieties of soybean in a soybean/maize intercrop in 2007 and 2008 seasons at the University of Agriculture Makurdi. Three periods of introduction of maize were evaluated: (i) planting at the same time with soybean;(ii) introduction of maize two weeks after planting soybean and (iii) introduction of maize four weeks after planting soybean. There were five cropping patterns viz: (i) soybean variety Samsoy-2 planted sole (ii) soybean variety TGX 1448-2E planted sole (iii) maize variety DMR-ESR-Y planted sole (iv) Samsoy -2 intercrop with maize and (v) TGX1448-2E intercrop with maize. The experiment was a split plot laid on complete randomized block design replicated three times. Results obtained revealed that there was no significant effect of time of introduction of maize on any soybean parameter observed. Yield and yield components of soybean indicated significant effect of cropping pattern (P<0.01) with number of pods per plant and grain yield. Grain yield and number of pods per plant decreased in intercrop with soybean variety Samsoy-2 having the highest number of pods per plant and grain yield. The result on maize indicated that maize planted sole was significantly (P<0.01) taller than intercropped maize, there was significant (P<0.01) effect of time of introduction of maize and cropping pattern on maize plant height, ear length, ear diameter, survival and barrenness percentage and grain yield. The Land Equivalent ratio (LER) values indicated that higher yield advantages were obtained from maize introduced two weeks after planting soybean and maize intercropped with soybean variety Samsoy-2 (1.35) than with soybean variety TGX1448-2E (1.12).

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