scholarly journals Inoculation of Bacillus spp. and nitrogen levels increase chickpea production

2021 ◽  
Vol 45 ◽  
Author(s):  
Maria Nilfa Almeida Neta ◽  
Elaine Soares de Almeida ◽  
Cândido Alves da Costa ◽  
Jéssica Aparecida dos Reis Nunes ◽  
Luiz Arnaldo Fernandes ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Mass ◽  
Growth And Yield ◽  
Diazotrophic Bacteria ◽  
Nitrogen Levels ◽  
Cultivation Time ◽  
Long Time ◽  
Bacillus Spp ◽  
Growth Promoting ◽  
Chlorophyll Index

ABSTRACT Chickpea growth and yield are related to the balanced supply of N. In weathered soils, this factor depends on the biological activity of growth-promoting bacteria, the presence of diazotrophic bacteria, and the management of nitrogen fertilization. In this regard, this study aimed to evaluate the efficiency of inoculation with a mix of Bacillus spp. and N levels on chickpea cultivation. Two experiments were carried out: area 01, characterized by shortest cultivation time and area 02, with the longest cultivation time. For both studies, the experimental design was in randomized blocks with four replications arranged in a 2 x 6 factorial consisting of the absence or presence of the mix of Bacillus spp. (1 x 107 CFU per mL) from root isolates and six N levels: 0, 25, 50, 75, 100, and 125 kg ha-1. The chickpea production and yield characteristics were evaluated. In the area 01, inoculation with the mix of Bacillus spp. did not interfere with grain yield, whereas the application of lower N levels (25 kg ha-1) increased the dry mass of branches, grains, total dry mass, and yield (4.17 t ha-1). In contrast, in the area 02, nitrogen fertilization increased the chlorophyll index but did not interfere with the remaining production variables, whereas inoculation with Bacillus spp. increased chickpea yield by 4%, resulting in a grain harvest of 4.16 t ha-1. Therefore, inoculation of chickpea seeds with the mix of Bacillus spp. is recommended in soils with long-time cultivation of agricultural species.

scholarly journals Nitrogen fertilization of vegetables cultivated under no-tillage after cover crops

2017 ◽  
Vol 35 (1) ◽  
pp. 103-110 ◽  
Author(s):  
Roberto BF Branco ◽  
Sally F Blat ◽  
Tais GS Gimenes ◽  
Rodrigo HD Nowaki ◽  
Humberto S Araújo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Cover Crops ◽  
Nitrogen Fertilization ◽  
Nitrate Concentration ◽  
Dry Mass ◽  
Growth And Yield ◽  
No Tillage ◽  
Biological Fixation ◽  
Sunn Hemp ◽  
Nitrogen Rates

ABSTRACT The production of horticultural crops in no-tillage and in rotation with cover crops reduces the dependency in nitrogen fertilizer, due to increased soil organic matter and by biological fixation performed by legumes. Thus, the aim of this work was to study rates of nitrogen fertilization and cover crops in the agronomic performance of tomato and broccoli grown under no-tillage. The experiment was conducted in a split plot design with four replications. Treatments consisted of cover crops, sunn hemp and millet, and four rates of nitrogen fertilization (0, 50, 100 and 200 kg/ha of nitrogen), for both the tomato and broccoli crops. All soil management was performed in no-tillage. For tomato crops we evaluated the plant growth, the nitrate concentration of sprouts and fruits and yield of commercial and non commercial fruits. For broccoli we evaluated plant growth and yield. There was an interaction effect between cover crop and nitrogen rates to tomato growth measured at 100 days after transplanting, for plant height, number of fruit bunches, dry mass of leaves and diameter of the stalk. The tomato commercial fruit number and yield showed maximum values with 137 and 134 kg/ha of N respectively, on the sunn hemp straw. The nitrate concentration of the tomato sprouts was linearly increasing with the increase of nitrogen rates, when grown on the millet straw. For broccoli production, the maximum fresh mass of commercial inflorescence was with 96 kg/ha of N, when grown on the millet straw.

scholarly journals PRODUTIVIDADE DE CANA-DE-AÇÚCAR FERTIRRIGADA COM DOSES DE N E INOCULADAS COM BACTÉRIAS DIAZOTRÓFICAS

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 29-41 ◽  
Author(s):  
William José Dellabiglia ◽  
Glauber José de Castro Gava ◽  
Adolfo Bergamo Arlanch ◽  
Roberto Lyra Villas Boas ◽  
Heitor Cantarella ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Irrigation Management ◽  
Research Unit ◽  
Diazotrophic Bacteria ◽  
Biological Fixation ◽  
Saccharum Spp ◽  
Nitrogen Levels ◽  
Sugarcane Yield ◽  
Subsurface Drip ◽  
E Mail

PRODUTIVIDADE DE CANA-DE-AÇÚCAR FERTIRRIGADA COM DOSES DE N E INOCULADAS COM BACTÉRIAS DIAZOTRÓFICAS*     WILLIAM JOSÉ DELLABIGLIA¹; GLAUBER JOSÉ DE CASTRO GAVA²; ADOLFO BERGAMO ARLANCH3; ROBERTO LYRA VILLAS BOAS4; HEITOR CANTARELLA5 E RAFFAELLA ROSSETTO6     * Artigo extraído da Dissertação do primeiro autor 1 Faculdade de Tecnologia de Botucatu (FATEC-BT), Av. José Ítalo Bacchi, s/n, Botucatu – SP – Brasil. E-mail: [email protected] 2 Pesquisador, Instituto Agronômico de Campinas (IAC), Rodovia SP 304, Km 304, Jaú, SP - Brasil. E-mail: [email protected] 3 Doutorando do Programa de Pós-Graduação em Irrigação e Drenagem, Universidade Estadual Paulista ‘‘Júlio Mesquita Filho’’ - UNESP/FCA, Rua José Barbosa de Barros, 1780, Botucatu, SP - Brasil. E-mail: [email protected] 4 Professor Doutor do Departamento de Recursos Naturais/Ciência do Solo, Universidade Estadual Paulista ‘‘Júlio Mesquita Filho’’ - UNESP/FCA, Rua José Barbosa de Barros, 1780, Botucatu, SP - Brasil. E-mail: [email protected] 5 Pesquisador, Instituto Agronômico de Campinas (IAC), Av. Barão de Itapura, 1481, Campinas, SP – Brasil. E-mail: [email protected] 6 Pesquisadora, Agência Paulista de Tecnologia (APTA), Rodovia SP 127, km 30, Piracicaba, SP – Brasil. E-mail: [email protected]     1 RESUMO   O objetivo deste trabalho foi avaliar a eficiência da inoculação de bactérias diazotróficas e da fertilização nitrogenada na produtividade e qualidade tecnológica da cana-de-açúcar (cana-planta), nos manejos: irrigado por gotejamento subsuperficial e de sequeiro.  O experimento foi conduzido na Unidade de Pesquisa Hélio de Moraes, do IAC, no município de Jaú, SP, (22°17’ S 48°34’ O, em Latossolo Vermelho). A variedade de cana-de-açúcar foi a RB92579. O delineamento experimental foi em blocos casualizados, composto por fatorial de 2 manejos de irrigação: irrigado (I) e não irrigado (NI), 2 manejos de inoculação: com inoculação (Inoc) e sem inoculação (Não inoc) com bactérias diazotróficas (BDs); e com 4 níveis de disponibilidade de nitrogênio (0, 70, 140 e 210 kg ha-1 de N), compondo assim 16 tratamentos com 4 repetições. O experimento teve duração de 365 dias, quando então foram realizadas as análises tecnológicas e determinou-se a produtividade de colmos (TCH) e de açúcar (TPH). A cana-de-açúcar elevou sua produtividade com a elevação das doses de nitrogênio. Nos tratamentos irrigados essa elevação foi maior comparando-se com os tratamentos não irrigados.   Palavras-chave: Saccharum spp.; gotejamento subsuperficial; adubação nitrogenada; fixação biológica do nitrogênio.     DELLABIGLIA, W. J.; GAVA, G. J. C.; ARLANCH, A. B.; BOAS, R. L. V.; CANTARELLA, H.; ROSSETTO, R. SUGARCANE YIELD FERTIGATION MANAGEMENT WITH DOSES OF N AND INOCULATED WITH DIAZOTROPHIC BACTERIA 2 ABSTRACT   The objective of this study was to evaluate the efficiency of inoculation with diazotrophic bacteria and nitrogen fertilization on yield and technological quality of sugarcane (cane plant), in the following managements: irrigated by subsurface drip and rainfed. The experiment was conducted at Hélio de Moraes Research Unit, of IAC in the municipality of Jaú, SP, (22 ° 17 'S 48 ° 34' O, Rhodic). The variety of sugarcane was RB92579. The experimental design was randomized blocks, composed by factorial of two irrigation management systems: irrigated (I) and non-irrigated (NI); and two-inoculation managements: with inoculation (Inoc) and without inoculation (No inoc) with diazotrophic bacterias (BDs); and 4 availability levels of nitrogen (0, 70, 140 and 210 kg ha-1 de N),  thus forming 16 treatments with 4 replications. The experiment lasted 365 days when then technological analysis was performed and determined sugarcane stalk yield (TCH) and sugar yield (TPH). The sugarcane raised its productivity with rising nitrogen levels. In irrigated treatments this increase was higher compared with non-irrigated treatments.   Keywords: Saccharum spp., subsurface drip, nitrogen fertilization, nitrogen biological fixation.  

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>

scholarly journals Does inoculation with Rhizobium tropici and nitrogen fertilization increase chickpea production?

2020 ◽  
Vol 44 ◽  
Author(s):  
Maria Nilfa Almeida Neta ◽  
Rodinei Facco Pegoraro ◽  
Regynaldo Arruda Sampaio ◽  
Cândido Alves da Costa ◽  
Luiz Arnaldo Fernandes ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Mass Number ◽  
Dry Mass ◽  
Control Treatment ◽  
Rhizobium Tropici ◽  
Agronomic Efficiency ◽  
Tropical Regions ◽  
Tropical Conditions ◽  
Chlorophyll Index ◽  
Biological Nitrogen

ABSTRACT Studies related to nitrogen fertilization and biological nitrogen fixation in the increase of chickpea production are considered scarce in tropical regions. This work aimed to evaluate the inoculation with Rhizobium tropici, and nitrogen fertilization, under irrigated tropical conditions, on the development of chickpea in low and high content of soil organic matter (SOM). The experimental design was in randomized blocks, with four replications, in a 2 x 6 factorial scheme. Treatments, consisted of the presence and absence of inoculation with R. tropici, and six N doses (0, 25, 50, 75, 100, and 125 kg ha-1) in the form of urea. The study was divided into two areas with distinct contents of SOM. In the area with the lowest content of SOM (3.55 dag kg-1), the inoculation with R. tropici or the fertilization with 125 kg ha-1 N increased the leaf content of nutrients (N, K, Mg, and P) and grain mass per plant, 100-grain mass, number of pods with two grains, dry mass of leaves, branches, chlorophyll index, and relative agronomic efficiency. Thus, the yield was increased in 65%, compared to the control treatment, recommending the application of 100 to 125 kg ha-1 of N with or without R. tropici. In the area with the highest content of SOM (7.37 dag kg-1), the inoculation with R. tropici provided a higher grain mass per plants, number of pods with one gain, dry mass of leaves, total dry mass, and chlorophyll index; nitrogen fertilization increased the leaf content of N and the chlorophyll index, although neither factor interfered with the yield, and are not recommended. Such results indicate the dependence of the nitrogen fertilization and inoculation with Rhizobium on the natural availability of N in the SOM.

scholarly journals Inoculation of diazotrophic bacteria in chicory

2020 ◽  
Vol 38 (2) ◽  
pp. 185-191
Author(s):  
Caliane da S Braulio ◽  
Rafaela SA Nóbrega ◽  
Luís Cláudio V Silva ◽  
Andreza de J Correia ◽  
Cheila BC de Sousa ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Weight ◽  
Dry Mass ◽  
Nitrogen Fertilizers ◽  
Control Treatment ◽  
Vegetable Crops ◽  
Diazotrophic Bacteria ◽  
Aerial Portion ◽  
Randomized Design ◽  
Total Plant

ABSTRACT Inoculating crops with diazotrophic bacteria constitutes a feasible biotechnological tool to reduce or even avoid the use of nitrogen fertilizers and to improve the nutritional status of crops. However, the potential use of such technology is limited due to the lack of studies in diverse vegetable crops. We evaluated the production of chicory (Cichorium intybus) in response to inoculation with diazotrophic bacteria in two soil classes. The experiments were performed under greenhouse conditions and under a completely randomized design. The treatments were constituted by strains UFRB FA34C2-2, UFLA 03-84 and INPA 0311B, and two control treatments (devoid of bacterial inoculation and with and without nitrogen fertilization). Two experiments were carried out, one using a soil classified as a dystrophic yellow Latosol (Oxisoil) and one using a Quartsandy Neosol (Typic Quartzipsamment). Chlorophylls a, b and total; plant height; number of leaves; dry mass of the aerial portion; dry mass of roots; total dry mass; effectiveness; efficiency in addition to N and P gathering in the aerial portion, were evaluated 60 days after seeding. The inoculation with diazotrophic bacteria resulted in adequate production when compared to the control treatment without nitrogen fertilization and without inoculation. Diazotrophic bacteria showed potential supplying nitrogen to chicory plants and spare the use of nitrogen fertilization in both soil classes. The strain INPA 0311B, recommended for cowpea, promoted vegetal growth and increased the dry weight of the aerial portion in chicory, under both dystrophic yellow Latosol (Oxisoil) and Neossolo Quartzarênico (Typic Quartzipsamment), when cultivated under greenhouse conditions.

scholarly journals Effects of water salinity and nitrogen fertilization on the growth and yield of ‘BRS Gabriela’ castor beans

2016 ◽  
Vol 37 (5) ◽  
pp. 2911
Author(s):  
João Batista dos Santos ◽  
Hans Raj Gheyi ◽  
Klebson Santos Brito ◽  
Diego Azevedo Xavier ◽  
Geovani Soares de Lima ◽  
...  
Keyword(s):  
Leaf Area ◽  
Irrigation Water ◽  
Nitrogen Fertilization ◽  
Total Mass ◽  
Seed Mass ◽  
Growth And Yield ◽  
Water Salinity ◽  
Nitrogen Levels ◽  
Alternative Crop ◽  
Nitrogen Rates

The castor bean has attracted the attention of many farmers as an alternative crop for the National Program of Biofuel and its extensive use in the ricinochemical industry. The crop requires large planting areas to meet the demands of the fuel market. The aim of the present study was to evaluate the effects of irrigation water salinity and nitrogen fertilization on the growth and production of castor beans, ‘BRS Gabriela’, in a protected environment. The present study was conducted at the Center of Technology and Natural Resources of the Federal University of Campina Grande. The experimental design was completely randomized in a 5 × 4 factorial with three replications and one plant per plot. The treatments consisted of irrigation water with five electrical conductivity (ECw) levels of 0.7, 1.7, 2.7, 3.7, and 4.7 dS m-1 associated with four nitrogen levels of 60, 80, 100, and 120 mg of N kg-1 of soil. The interaction between water salinity and nitrogen rates did not exert significant effects on the variables studied. Increased salinity of irrigation water affected the growth in height and stem diameter of castor beans in all periods, and leaf area from 90 days after sowing. Increased nitrogen levels had a positive effect on leaf area at 60, 90, 120, and 150 days after sowing. The total mass of seeds, one hundred seed mass, yield, and number of fruits per plant decreased with the increase in water salinity, and the total mass of seeds was the most affected variable.

scholarly journals Growth and yield of carrot inoculated with Bacillus subtilis and Pseudomonas fluorescens

2020 ◽  
Vol 14 (3) ◽  
pp. 385-392
Author(s):  
Ana Rosa da Silva França ◽  
Elis Borcioni ◽  
Crysttian Arantes Paixão ◽  
Ricardo Silva Araújo ◽  
Rangel Viganó de Campos ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Pseudomonas Fluorescens ◽  
Agricultural Practices ◽  
Dry Mass ◽  
Growth And Yield ◽  
Nitrogen Levels ◽  
Reduced Nitrogen ◽  
Plant Growth Promoting ◽  
Shoot Mass ◽  
Yield Responses

The objective of this study was to evaluate the effects of inoculation and co-inoculation with Bacillus subtilis and Pseudomonas fluorescens on carrots with reduced nitrogen use. A field experiment was carried on, with five treatments and five replicates, evaluating the growth and yield responses of inoculated carrots. Responses were observed in height only two weeks before harvesting, and the number of leaves was most affected from the beginning to the middle of the cultivation cycle. Although the fresh shoot mass was negatively affected by the inoculation treatments, the dry shoot mass did not respond to the rhizobacteria. The length of roots inoculated with P. fluorescens or co-inoculated with both bacteria increased from 21 cm, without inoculation, to 25 cm. The root volume and dry mass values were the same across the treatments. However, the fresh root mass was improved by between 70 and 81.8% with P. fluorescens and co-inoculation, respectively. More positive responses to inoculation were observed with reduced nitrogen levels, suggesting a potential in the rhizobacteria strains for use in reduced-input agricultural practices. Moreover, based on the findings, Pseudomonas fluorescens can be recommended as a plant growth-promoting microorganism in carrot cultivation.

scholarly journals Morphogenic and structural characteristics and chemical composition of grass aruana, submitted to nitrogen fertilization

2019 ◽  
Vol 40 (6Supl2) ◽  
pp. 3167 ◽  
Author(s):  
Alice Mariana Hupp Sacramento ◽  
Olga Cedro de Menezes ◽  
Tarcísio Marques Barros ◽  
Diego Novais Pinheiro ◽  
Soraya Maria Palma Luz Jaeger ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Nitrogen Fertilization ◽  
Structural Characteristics ◽  
Block Design ◽  
Dry Mass ◽  
Leaf Length ◽  
Panicum Maximum ◽  
Nitrogen Levels ◽  
Randomized Block Design ◽  
Leaf Appearance

This study aimed at evaluating the morphogenic and structural characteristics of Panicum maximum Jacq. cv. Aruana, as well as its chemical composition after submitting it to different nitrogen levels. The experiment was performed by adopting a randomized block design which included four treatments (0, 75, 150 and 225 kg ha-1 of N) and three replications, in 100 m2 plots. Twice a week, for the 63 days of regrowth, the morphogenic characteristics were determined and estimated, after which the chemical composition was assessed. The aruana grass revealed a quadratic and positive response to the nitrogen fertilization, and showed a remarkable rise in the elongation rates, leaf appearance and senescence, besides the number of live leaves per tiller and final leaf length. However, the nitrogen fertilization reduced the phyllochron and leaf life in the aruana grass, implying the direct effect of nitrogen on the flow of tissues. A quadratic and positive effect of the nitrogen fertilization was observed for the dry mass production, from 5,840.80 kg ha-1 for plants lacking the nitrogen fertilization to 8,862.55 kg ha-1 for those fertilized with 225 kg ha-1 of N. Thus, while the nitrogen fertilization positively affected both tillering and morphogenesis, the N doses used in this study were insufficient to induce any change in the chemical composition of the aruana grass.

scholarly journals Yield, chemical composition and chlorophyll relative content of Tanzania and Mombaça grasses irrigated and fertilized with nitrogen after corn intercropping

2011 ◽  
Vol 40 (4) ◽  
pp. 728-738 ◽  
Author(s):  
C.M. Pariz ◽  
M. Andreotti ◽  
A.F. Bergamaschine ◽  
S. Buzetti ◽  
N.R. Costa ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Block Design ◽  
Dry Mass ◽  
Neutral Detergent Fiber ◽  
Chlorophyll Contents ◽  
Leaf Chlorophyll ◽  
Random Block ◽  
Chlorophyll Index ◽  
Random Block Design ◽  
Red Latosol

It was evaluated the effect of the absence and of application of three nitrogen doses (50, 100 and 200 kg ha-1of N) and four harvest times in the winter/spring season (from July to October) on dry mass yield (DMY), on the relative chlorophyll contents (ICF _ leaf chlorophyll index) and on the contents of total digestible nutrients (TDN), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and lignin, and their respective correlations on Tanzania and Mombaça grasses after intercrop with corn in distroferric red latosol (Oxisol) soil as well. It was used a random block design, in split-plot with four replicates. The greatest DMY occured with the increase of photoperiod (from August), neverthless responses to nitrogen fertilization over cuts difered among the grasses. In an irrigated crop-livestock integration system under cerrado conditions, it is technically feasible the establishment of Tanzania and Mombaça grass intercroped with corn at sowing or if cover nitrogen fertilization is performed because even in the abscence of nitrogen fertilization, great satisfactory quantity of forage was produced, with average DMY of 2,000 kg ha-1 per cut during the highest shortage of roughage for animals (winter/spring). Nitrogen fertilization after corn harvest increases DMY and improves bromatologic composition of the grasses, as contents of chlorophyll and CP in winter/spring is increased, besides the increase of contents of TDN and a reduction on the contents of NDF and ADF until September. Leaf chlorophyll index can be used to estimate the DMY and CP content and as a marker of the need of nitrogen fertilization of Tanzania and Mombaça grasses submitted to cutting.

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