MODELAGEM FUZZYPARA AVALIAÇÃO DA PRODUÇÃO DE MUDAS DE TOMATE CEREJA UTILIZANDO DIFERENTES DOSES DE POLÍMEROS E NÍVEIS DE IRRIGAÇÃO

The tomato is considered the second vegetable of economic importance in Brazil and for the success of its cultivation, depends to a large extenton the use of quality seedlings, since a well formed seedling will give rise to a plant with high productive potential. Adequate water availability is important to produce good seedlings, but failing that, commercial polymers inserted into the substrate can be used. The objective of this work was to study the effects on the development of cherry tomatoes in different doses of polymers applied to the substrate and different levels of irrigation until the transplant phase using fuzzy modeling. For this study, we used data from an experiment conducted at the Faculty of Technology of Presidente Prudente.The input variables of the developed system based on fuzzy rules were Polymer and Irrigation, and for both were defined 5 fuzzy sets. The output variables wereshoot length (CPA), root length (CR) and seedling dry mass (MSM). For the SBRF output variables, 5 fuzzy sets were also defined. The analysis of the effects of polymer doses and irrigation levels on tomato seedlings was performed using three -dimensionalgraphs and contour maps of the output variables. This analysis allowed us to conclude that, for irrigation levels below the maximum (daily irrigation), the use of 2 grams of polymers refers to the best conditions of the variables shoot length, root lengthand dry mass of the seedling.

Download Full-text

ANÁLISE DE CUSTOS E DESEMPENHO AGRONÔMICO NA PRODUÇÃO DE ALFACE SUBMETIDA A NÍVEIS DE IRRIGAÇÃO E USO DE HIDRORRETENTOR

Irriga ◽

10.15809/irriga.2018v1n1p55-70 ◽

2018 ◽

Vol 1 (1) ◽

pp. 55-70

Author(s):

João de Jesus Guimarães ◽

LEANDRO Caixeta Salomão ◽

WELCIO RODRIGUES DA SILVA ◽

HENRIQUE FONSECA ELIAS DE OLIVEIRA ◽

DÉBORA REGINA MARQUES PEREIRA ◽

...

Keyword(s):

Lactuca Sativa ◽

Mato Grosso ◽

Lactuca Sativa L ◽

Federal Institute ◽

Four Levels ◽

And Performance ◽

The Cost ◽

Irrigation Levels ◽

Different Levels ◽

Different Doses

ANÁLISE DE CUSTOS E DESEMPENHO AGRONÔMICO NA PRODUÇÃO DE ALFACE SUBMETIDA A NÍVEIS DE IRRIGAÇÃO E USO DE HIDRORRETENTOR 1JOÃO DE JESUS GUIMARÃES; LEANDRO CAIXETA SALOMÃO2; WELCIO RODRIGUES DA SILVA3; HENRIQUE FONSECA ELIAS DE OLIVEIRA4; DÉBORA REGINA MARQUES PEREIRA5 E MANOEL HENRIQUE REIS DE OLIVEIRA6 1 Departamento de Engenharia Agrícola, Faculdade de Ciências Agronômicas – FCA – Unesp, Câmpus Botucatu, Avenida Universitária, 3780, CEP 18610-034, Altos do Paraíso, Botucatu-SP, Brasil, [email protected] 2 Departamento de Engenharia Agrícola, Instituto Federal de Educação Ciência e Tecnologia Goiano-Campus Urutaí, Rodovia Geraldo Silva Nascimento Km 2,5, Zona Rural, Urutaí-GO, Brasil, [email protected] 3 Universidade Estadual de Goiás, Campus Goianésia, Rua 35, nº 436, Setor Sul, Goianésia-GO, Brasil, [email protected] 4 Departamento de Irrigação e Drenagem, Instituto Federal de Educação Ciência e Tecnologia Goiano-- Campus Ceres, Rodovia GO 154, Km 03, s/n, Zona Rural, Ceres-GO, Brasil, [email protected] 5 Prefeitura Municipal de Goianésia, Av. Mato Grosso, nº 61 - Setor Universitário, Goianésia-GO, Brasil, [email protected] 6 Departamento de Irrigação no Cerrado, Instituto Federal de Educação Ciência e Tecnologia Goiano-Campus Ceres, Rodovia GO 154, Km 03, s/n, Zona Rural, Ceres-GO, Brasil, [email protected] 1 RESUMO Objetivou-se com este trabalho realizar a análise de custo e desempenho agronômico da alface crespa produzida em ambiente protegido submetida a diferentes níveis de irrigação e diferentes doses de solução hidroretentora. O trabalho foi realizado na área experimental do Instituto Federal Goiano - Campus Urutaí-GO, cujas coordenadas geográficas são latitude 17º29’10” S, longitude 48º12’38” O e altitude de 697 m, no período de dezembro de 2017 a janeiro de 2018. O delineamento experimental utilizado foi o de blocos ao acaso, em esquema fatorial (4x5), com parcela subdividida e quatro blocos, em que se utilizaram quatro níveis de irrigação (50, 75, 100 e 125%) da evaporação obtida diariamente, junto ao tanque Classe A e cinco doses de solução de hidrogel (0, 50, 100, 150 e 200 g). Analisou-se o custo de produção considerando os gastos efetivos realizados durante o ciclo produtivo além das variáveis produtividade (PRO) e a eficiência do uso da água (EUA). Os níveis de irrigação e doses de solução hidrorretentora utilizados influenciaram significativamente as variáveis PRO e EUA. A lucratividade cresceu com o aumento das lâminas de irrigação e decresceu com a utilização do hidrogel. Palavras-chave: análise econômica, hidrogel, Lactuca sativa L., viabilidade, lâminas de irrigação. GUIMARÃES, J. J.1; SALOMÃO, L. C.2; SILVA, W. R.3; OLIVEIRA, H. F. E.4; PEREIRA, D. R. M.5; OLIVEIRA, M. H. R.6 ANALYSIS OF COSTS AND AGRONOMIC PERFORMANCE IN LETTUCE PRODUCTION SUBMITTED TO LEVELS OF IRRIGATION AND USE OF HYDRO RETAINER 2 ABSTRACT The objective of this work was to perform an analysis of the cost and performance of crisp lettuce in a protected model, with different levels of irrigation and different doses of hidroretentora solution. The work was carried out in the experimental area of Goiás Federal Institute - Campus Urutaí-GO, geographic positions are latitude 17º29'10 "S, longitude 48º12'38" W and altitude 697 m, excluding the period from December 2017 to January 2018 (4x5), with subdivision of blocks using four levels of irrigation (50, 75, 100 and 125%) of the evaporation obtained daily, to tank Class A and five doses of hydrogel solution (0, 50, 100, 150 and 200 g). The product was analyzed with the advantage of having achieved, during the productive cycle, productive changes and efficiency in water use (USA). Irrigation levels and doses of hydrocortisone solution may significantly influence PRO and US variables. Profitability increased with the increase of irrigation slides and decreased with the use ofhydrogel. Keywords: economic analysis, hydrogel, Lactuca sativa L., viability, irrigation blade.

Download Full-text

Irrigation with domestic treated sewage and nitrogen fertilizing in sunflower cultivation

Engenharia Agrícola ◽

10.1590/s0100-69162014000600014 ◽

2014 ◽

Vol 34 (6) ◽

pp. 1186-1200 ◽

Cited By ~ 5

Author(s):

Francicso M. L. Bezerra ◽

Cley A. S. de Freitas ◽

Alexandre R. A. da Silva ◽

Suetônio de B. Mota ◽

Boanerges F. de Aquino

Keyword(s):

Sewage Water ◽

Treated Wastewater ◽

Yield Potential ◽

Productive Performance ◽

Class A ◽

Treated Sewage ◽

Irrigation Depth ◽

Irrigation Levels ◽

Different Levels ◽

Different Doses

The objective of this study was to evaluate the productive performance of sunflower plants irrigated with different levels of domestic treated sewage and groundwater well with different doses of nitrogen. It was used randomized blocks design in split-split plots with four replications. In the plots, we evaluated the effect of two types of irrigation water, in the subplots we evaluated the five irrigation levels expressed as 25, 50, 75, 100 and 125% of the Class A pan Evaporation (CAE), and in the sub subplots, we evaluated the effect of four different doses of nitrogen (25, 50, 75 and 100 kg ha-1). The irrigation of sunflower with domestic sewage produced greater yield potential of grain and oil. The use of water from treated wastewater can replace up to 50 kg N ha-1 without affecting productivity. It is recommended for the commercial production of sunflower the use of treated sewage water with irrigation depth relative to 100% of CAE (296.64 mm) and nitrogen of 25 kg ha-1.

Download Full-text

Infestation of four mustard varieties by Lipaphis erysimi (Kalt) in relation to different levels of irrigation

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v41i4.30695 ◽

2016 ◽

Vol 41 (4) ◽

pp. 625-632 ◽

Cited By ~ 1

Author(s):

MA Mannan ◽

N Tarannum

Keyword(s):

Correlation Coefficient ◽

Interaction Effects ◽

Aphid Population ◽

Lipaphis Erysimi ◽

Aphid Infestation ◽

Irrigation Levels ◽

Different Levels

An experiment was conducted to find out the influence of three irrigation levels (no irrigation, one irrigation and two irrigation) on four mustard varieties (Tori- 7, BARI Sharisha-6, BARI Sharisha-9 and BARI Sharisha-8). The non-irrigated plots had highest aphid population (34.96/plant) and lowest (11.16 aphids/plant) in two irrigation. The variety BARI Sharisha-8 showed lowest (5.34 aphids/plant) aphid infestation and its yield was highest (2.05 ton/ha). Interaction effects indicated that the crop escaped from the aphid incidence in the variety BARI Sharisha-8 irrigated 2 times and produced highest yield (2.37 ton/ha). The differences in the aphid population at three irrigation levels affected the yield contributing characters and it was negatively correlated (correlation coefficient value r ranged from -0.91 to 1.0).Bangladesh J. Agril. Res. 41(4): 625-632, December 2016

Download Full-text

AVALIAÇÃO DE DIFERENTES DOSES DE FERTILIZANTE ORGANOMINERAL NO DESENVOLVIMENTO DE MUDAS DE MAMÃO

REVISTA FUNEC CIENTÍFICA - MULTIDISCIPLINAR - ISSN 2318-5287 ◽

10.24980/ucm.v10i12.3605 ◽

2021 ◽

Vol 10 (12) ◽

pp. 1-9

Author(s):

Everson Oliveira MACHADO ◽

Everton Oliveira MACHADO ◽

Alessandra de Lourdes BALLARIS ◽

Marcelo Romero Ramos da SILVA

Keyword(s):

Mineral Fertilizer ◽

Dry Mass ◽

Mineral Fertilizers ◽

Santa Fe ◽

Tree Seedling ◽

Biometric Data ◽

Production Chain ◽

Organic Mineral ◽

Papaya Tree ◽

Different Doses

O mamoeiro é umas das plantas frutíferas mais comuns em quase todos os países da América Tropical. Um dos principais problemas na cadeia produtiva da cultura de mamão é obter bom manejo do material propagativo e garantir uniformidade e qualidade de estande, sendo para isso necessária a obtenção de mudas de qualidades fisiológicas e sanitárias adequadas. A utilização de produtos alternativos vem demonstrando efeitos significativos no desenvolvimento radicular de várias plantas, o que beneficia a formação de um pomar de maneira rápida, homogênea, permitindo assim a antecipação da colheita e maior lucratividade ao produtor. O objetivo deste trabalho foi avaliar o efeito do organomineral em diferentes doses na produção de mudas da cultura do mamoeiro da cultivar Sunrise Solo Line 72/12, em condições de ambiente protegido. O experimento foi conduzido no viveiro de mudas do Centro Universitário de Santa Fé do Sul - UNIFUNEC, Campus II. O delineamento experimental utilizado foi de blocos inteiramente casualizados, com seis tratamentos (0; 0,050; 0,100; 0,200; 0,300 e 0,400 kg tratamento de organomineral) e quatro repetições (6X4), utilizando 5 saquinhos por repetição, totalizando 120 saquinhos. Os dados biométricos analisados foram altura da planta (cm); comprimento da raiz (cm); diâmetro do caule (cm); massa úmida e seca da área foliar (g) e massa úmida e seca da raiz (g), aos 60 dias após plantio. Com base nos dados obtidos dos caracteres agronômicos analisados, conclui-se que o uso das doses 0,050; 0,100; 0,200 e 0,300 kg por tratamento de fertilizante organomineral promoveu a obtenção de mudas de mamoeiro com maior qualidade fisiológica que são imprescindíveis na formação de pomares comerciais. REVIEW OF DIFFERENT DOSES OF ORGANIC MINERAL FERTILIZERS FOR PAPAYA SEEDLING DEVELOPMENT ABSTRACT The papaya tree is one of the most common fruit trees in almost all Tropical American countries. One of the main issues in the papaya cultivation production chain is obtaining good management of propagative material and provide uniformity and quality for sales quality assurance, being to this end necessary to obtain physiological and sanitary appropriate seedling. The use of alternative products has demonstrated significant effects on the root development of several plants, benefiting a fast, homogeneous formation of an orchard, resulting in the anticipation of the harvest and higher profitability for the farmers. This paper aims at reviewing the organic mineral in different doses to produce papaya tree seedling from cultivar Sunrise Solo Line 72/12, in environment-protected conditions. The experiment was carried out at the Centro Universitário de Santa Fé do Sul - UNIFUNEC, Campus II greenhouse. The trial design chosen was the completely randomized blocks, with 6 treatments (0; 0,050; 0,100; 0,200; 0,300, and 0,400 kg organic mineral treatment), and four repetitions (6X4), using 5 small bags per repetition, total 120 small bags. Biometric data analyzed was the plant height (cm); root length (cm); stem diameter (cm); wet and dry mass of the leaf area (g), and wet and dry mass of the root area (g), 60 days after planting. Based on the data obtained from agronomic characters analyzed, it was concluded that the use of 0,050; 0,100; 0,200, and 0,300 kg doses per treatment with organic mineral fertilizer provided papaya tree seedling with higher physiological quality which are vital for the commercial formation of orchards. Keywords: Carica papaya L. Seedling. Propagation.

Download Full-text

FUNGOS MICORRÍZICOS ARBUSCULARES E DOSES DE FÓSFORO NO DESENVOLVIMENTO DE MUDAS DE GUANANDI

Nativa ◽

10.31413/nativa.v6i3.4720 ◽

2018 ◽

Vol 6 (3) ◽

pp. 246

Author(s):

Edilson Nonato Da Silva ◽

Aline Torquato Tavares ◽

Cândida Pereira Da Silva ◽

Tiago Alves Ferreira ◽

João Victor Gonçalves Carline ◽

...

Keyword(s):

Mycorrhizal Fungi ◽

Arbuscular Mycorrhizal ◽

Dry Mass ◽

Mycorrhizal Colonization ◽

University Campus ◽

Experimental Station ◽

Calophyllum Brasiliense ◽

Shoot Mass ◽

Different Levels ◽

Forest Engineering

O experimento foi realizado na Estação Experimental de Engenharia Florestal do Campus Universitário de Gurupi, Universidade Federal do Tocantins (UFT), com objetivo de determinar a melhor dose de fósforo na presença de fungos arbusculares em mudas de guanandi (Calophyllum brasiliense Camb.) O delineamento experimental utilizado foi inteiramente casualizado com três repetições em esquema fatorial 6 x 2. Os tratamentos foram seis doses de fósforo (0; 400; 800; 1200; 1600 e 2000 g de P2O5 por m³) no substrato na presença e ausência de Fungos Micorrízos Arbusculares (FMAs). As características avaliadas foram altura das plantas, diâmetro do caule, massa seca da parte aérea (MSPA), massa seca da raiz (MSR), massa seca total (MST) e colonização micorrízica. Os diferentes níveis de adubação influenciaram a colonização micorrízica arbuscular. Nas doses 400 e 1600 g de fósforo por m3 de substrato observou-se maior porcentagem de colonização. A altura e o diâmetro das plantas foram significativamente afetados pela presença de P2O5. A massa seca da parte aérea e massa seca total não é afetada por doses de P2O5. O melhor desempenho das mudas de C. brasiliense ocorreu aos 90 dias com dose de 1.421 g de P2O5 por m3 de substrato.Palavras-chave: Calophyllum brasiliense Camb., adubação, micorrização. MYCORRHIZAL FUNGI AND PHOSPHORUS DOSES IN THE DEVELOPMENT OF GUANANDI SEEDLINGS ABSTRACT:The experiment was carried out at the Forest Engineering Experimental Station of the Federal University of Tocantins (UFT), University Campus of Gurupi, with the objective of determining the best dose of phosphorus in the presence of arbuscular fungi in guanandi (Calophyllum brasiliense Camb. The experimental design was completely randomized with three replicates in a 6 x 2 factorial scheme. The treatments were six doses of phosphorus (0, 400, 800, 1200, 1600 and 2000 g of P2O5 per m³) on the substrate in the presence and absence of Arbuscular mycorrhizal fungi (FMAs). The evaluated characteristics were plant height, stem diameter, shoot dry mass (MSPA), root dry mass (MSR), total dry mass (MST) and mycorrhizal colonization. The different levels of fertilization influenced arbuscular mycorrhizal colonization. At 400 and 1600 g of phosphorus per m3 of substrate, a higher percentage of colonization was observed. The height and diameter of the plants were significantly affected by the presence of P2O5. Dry shoot mass and total dry mass are not affected by P2O5 doses. The best performance of C. brasiliense seedlings occurred at 90 days with a dose of 1421 g of P2O5 per m3 of substrate.Keywords: Calophyllum brasiliense Camb., fertilization, mycorrhization. DOI:

Download Full-text

In vitro development of sugarcane seedlings using ethephon or gibberellin

Comunicata Scientiae ◽

10.14295/cs.v8i2.1828 ◽

2018 ◽

Vol 8 (2) ◽

pp. 389-395

Author(s):

Luciane De Siqueira Mendes ◽

Marcia Eugenia Amaral Carvalho ◽

Willian Rodrigues Macedo ◽

Paulo Roberto de Camargo e Castro

Keyword(s):

Gibberellic Acid ◽

Dry Mass ◽

In Vitro Production ◽

In Vitro Development ◽

Reduced Height ◽

Potential Strategy ◽

Vitro Development ◽

Vitro Production ◽

Different Doses

The use of plant growth regulators is directly related to the success of in vitro propagation, which is an advantageous alternative to obtain seedlings on a commercial scale. This study aimed to evaluate the in vitro development of ‘IAC 95-5000’ sugarcane seedlings after the addition of different doses of ethephon (0, 25, 50, 100 and 200 mg L-1) or gibberellic acid (0, 2.5, 5.0, 7.5 and 10.0 mg L-1) to the culture medium. Ethephon increased the number of tillers (up to 231.70%), reduced height of the main tiller (44.66 to 60.47%), and did not affect the shoot´s fresh and dry mass. On the other hand, gibberellin decreased the number of tillers and negatively changed biomass partitioning. It is concluded that the use of ethephon is a potential strategy to enhance in vitro production of ‘IAC 95-5000’ sugarcane seedlings, since it increased the number of usable shoots in subsequent subcultures, and its effects on height reduction can be reversible. However, the use of the tested doses of gibberellic acid is not recommended, because it impaired seedling development of this sugarcane variety.

Download Full-text

DESENVOLVIMENTO DO TOMATEIRO INDUSTRIAL EM RESPOSTA A DIFERENTES NÍVEIS DE IRRIGAÇÃO

Irriga ◽

10.15809/irriga.2020v25n3p432-448 ◽

2020 ◽

Vol 25 (3) ◽

pp. 432-448

Author(s):

Cícero José da Silva ◽

José Antônio Frizzone ◽

César Antônio da Silva ◽

Nadson de Carvalho Pontes ◽

Luiz Felipe Mariano da Silva ◽

...

Keyword(s):

Leaf Area Index ◽

Leaf Area ◽

Plant Development ◽

Tomato Plant ◽

Dry Mass ◽

Area Index ◽

Tomato Plants ◽

Subsurface Drip ◽

Irrigation Levels ◽

E Mail

DESENVOLVIMENTO DO TOMATEIRO INDUSTRIAL EM RESPOSTA A DIFERENTES NÍVEIS DE IRRIGAÇÃO Cícero José da Silva1; José Antônio Frizzone2; César Antônio da Silva3; Nadson de Carvalho Pontes4; Luiz Felipe Mariano da Silva5 E Ênio Eduardo Basílio6 1Professor do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 2Professor Aposentado Colaborador Senior, Departamento de Engenharia de Biossitemas, Escola Superior de Agricultura “Luiz de Queiroz” – Universidade de São Paulo, Avenida Pádua Dias, N 11, Caixa Postal 9, CEP: 13418-900, Piracicaba – SP, Brasil. E-mail: [email protected] 3Professor do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 4Professor do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 5Estudante de Iniciação Científica do Curso Bacharelado em Agronomia, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 6Técnico Administrativo, Mestre em Olericultura, Instituto Federal Goiano – Campus Morrinhos – GO, BR 153, Km 633, Zonal Rural, CEP;75650-000, Morrinhos – GO, Brasil. E-mail: [email protected] 1 RESUMO O objetivo desta pesquisa foi avaliar o desenvolvimento de plantas de tomateiros submetidas a diferentes níveis de reposição da irrigação, aplicados via sistema gotejamento subsuperficial durante duas safras. O experimento foi conduzido no delineamento em blocos ao acaso, com quatro repetições. Foram avaliados cinco níveis de irrigação: 50, 75, 100, 125 e 150% da evapotranspiração da cultura (%ETc) medida com lisímetros de pesagem, sobre o desenvolvimento de plantas de tomateiro. Cada parcela experimental foi composta por três fileiras de plantas de 5,5 m de comprimento, espaçadas a 1,10 m entre si e 0,30 m entre plantas. As avaliações de área foliar, índice de área foliar, massa seca de raiz, caule, folhas, flores, frutos e total foram realizadas aos 45, 65 e 85 dias após o transplante das mudas. Irrigações deficitárias e em excesso prejudicaram o desenvolvimento vegetativo das plantas de tomateiro. Os maiores valores de área foliar, índice de área foliar e massa seca total das plantas de tomateiro foram estimados com níveis de irrigação que variaram de 96 a 112% da ETc, variando de acordo com o ano de avaliação e a fase de desenvolvimento do tomateiro. Irrigações deficitárias e excessivas prejudicaram a floração e frutificação do tomateiro híbrido BRS Sena. Palavras-chave: Solanum lycopersicom L.; gotejamento enterrado; manejo da irrigação; massa seca. Silva, c. j. da; FRIZZONE, J. A.; SILVA, C. A. da; pontes, n. de C.; SILVA, L. F. M. da; BASÍLIO, Ê. E. Industrial tomato plant development in response to different irrigation levels 2 ABSTRACT This research aimed to evaluate tomato plant development submitted to different irrigation replacement levels, irrigated via subsurface drip system for two harvests. The experiment was conducted under a randomized complete block design with four replications. Five irrigation levels were evaluated: 50, 75, 100, 125 and 150% of crop evapotranspiration (% ETc) measured with weighing lysimeters over the tomato plants development. Each experimental plot was composed of three plants rows with 5.5 m long, spaced 1.10 m apart and 0.30 m between plants. Leaf area, leaf area index, root dry matter, stem, leaves, flowers, fruits and total were evaluated at 45, 65 and 85 days after seedlings transplanting. Deficit and excess irrigation impaired the vegetative development of tomato plants. The highest values of leaf area, leaf area index and plants total dry mass were estimated with irrigation levels ranging from 96 to 112% of ETc, depending on the evaluation harvest year and the crop development phase. Deficit and excessive irrigation affected the flowering and fruiting of the hybrid tomato BRS Sena. Keywords: Solanum lycopersicom L; subsurface drip irrigation; irrigation manegement; dry mass.

Download Full-text

Modes of application with Cobalt and Molybdenum fertilizations in different stages of soybean development and yield of soybean

Scientific Electronic Archives ◽

10.36560/1332020837 ◽

2020 ◽

Vol 13 (3) ◽

pp. 31

Author(s):

A. G. Comiran ◽

C. S. Pereira ◽

I. V. A. Fiorini ◽

P. L. F. Galdino ◽

F. G. Moraga ◽

...

Keyword(s):

Yield Components ◽

Dry Mass ◽

Reproductive Period ◽

Atmospheric Nitrogen ◽

Mato Grosso ◽

Time Of Application ◽

Full Flowering ◽

Different Doses ◽

Soybean Nodulation

The elements cobalt (Co) and molybdenum (Mo) are micronutrients of great importance for legumes, since they play a fundamental role in the fixation of atmospheric nitrogen assimilated by bacteria of the genus Bradyrhizobium. The objective of the present study was to evaluate the yield components of soybean as a function of different doses and time of application of cobalt and molybdenum via leaf. The experiment was conducted in the municipality of Vera - Mato Grosso. The treatments consisted of the combination of five doses of the micronutrient (0, 50, 100, 150 and 300 mL ha-1) with two phenologicals stages of application periods (V5, fifth node and fourth trifoliate flower and R2, full flowering)). The characteristics evaluated: dry mass of the nodules, number of nodules, number of pods per plant, grains per pod, mass of 100 grains and productivity. It is concluded that under the conditions of this experiment, the application of cobalt and molybdenum via leaf in V5 and R2 does not alter soybean nodulation. The application in the reproductive period (R2) provides a greater number of pods per plant and number of grains per pod, but does not affect productivity

Download Full-text

Alginate gel entrapped ectomycorrhizal inoculum promoted growth of cuttings of Eucalyptus clones under nursery conditions

Canadian Journal of Forest Research ◽

10.1139/cjfr-2018-0129 ◽

2019 ◽

Vol 49 (8) ◽

pp. 978-985 ◽

Cited By ~ 1

Author(s):

Lidiomar Soares da Costa ◽

Paulo Henrique Grazziotti ◽

Alexandre Christófaro Silva ◽

Arley José Fonseca ◽

Ângela Laís Fernandes Gomes ◽

...

Keyword(s):

Calcium Alginate ◽

Dry Mass ◽

Control Treatment ◽

Vegetative Mycelium ◽

Rooted Cuttings ◽

Shoot Height ◽

Rooted Cutting ◽

Alginate Gel ◽

Productive Potential ◽

Calcium Alginate Gel

Plant inoculation with ectomycorrhizal fungi (EMF) maximizes the productive potential of forest stands. Thus, the inoculation efficiency of calcium alginate gel entrapped EMF vegetative mycelium was evaluated in a commercial nursery using cuttings of Eucalyptus clones GG100 and GG680. The cuttings were inoculated with Pisolithus microcarpus G. Cunn. (Cooke & Massee), Hysterangium gardneri E. Fisch., and Scleroderma areolatum Ehrenb. The cuttings were cultivated under low phosphate fertilization and compared with uninoculated control treatments with reduced phosphate (low P control) and full phosphate (high P control) fertilization. Pisolithus microcarpus inoculation increased shoot height, root collar diameter, shoot dry mass, total dry mass, and frequency of maximum score for root ball formation of the two clones compared with the low P control treatment. Also, in relation to the low P control treatment, H. gardneri inoculation increased shoot dry mass in GG100 rooted cuttings. Scleroderma areolatum inoculation did not enhance any characteristic of Eucalyptus rooted cuttings. Inoculation of vegetative mycelium with EMF impregnated in calcium alginate gel intensified rooted cutting growth in a commercial Eucalyptus nursery and decreased the phosphate dose required. Based on the comparison of two Eucalyptus clones, efficiency of the inoculants in promoting benefits depends on the fungus and the Eucalyptus clone. Pisolithus microcarpus is most promising for inoculation in Eucalyptus cuttings.

Download Full-text

Mathematical Models of the Simplest Fuzzy Two-Term (PI/PD) Controllers Using Algebraic Product Inference

Modelling and Simulation in Engineering ◽

10.1155/2011/573715 ◽

2011 ◽

Vol 2011 ◽

pp. 1-7 ◽

Cited By ~ 2

Author(s):

Murali Bosukonda ◽

Naresh Kelothu

Keyword(s):

Mathematical Models ◽

Fuzzy Sets ◽

Output Variable ◽

Control Rules ◽

Variable Control ◽

Control Community ◽

Input Variables ◽

The Universe ◽

Control Output ◽

Universe Of Discourse

This paper reveals mathematical models of the simplest Mamdani PI/PD controllers which employ two fuzzy sets (N: negative and P: positive) on the universe of discourse (UoD) of each of two input variables (displacement and velocity) and three fuzzy sets (N: negative, Z: zero, and P: positive) on the UoD of output variable (control output in the case of PD, and incremental control output in the case of PI). The basic constituents of these models are algebraic product/minimum AND, bounded sum/algebraic sum/maximum OR, algebraic product inference, three linear fuzzy control rules, and Center of Sums (CoS) defuzzification. Properties of all these models are investigated. It is shown that all these controllers are different nonlinear PI/PD controllers with their proportional and derivative gains changing with the inputs. The proposed models are significant and useful to control community as they are completely new and qualitatively different from those reported in the literature.

Download Full-text