Instituto Federal Goiano Research Articles

Informatics applied to health evaluation and promotion: online platform for filling in questionnaires

Objective: This study was conducted with the objective of developing and evaluating a computerized platform for health promotion for workers of the Instituto Federal Goiano Campus Ceres. Method: The system was developed using markup languages (HTML, CSS) for presentation and styling of the interface and programming languages (PHP, JavaScript) for forms data management, connecting to the database, and dynamic user-system interaction. The graphic framework Bootstrap was also used to increase the visual aspect. The main tools employed were the folowing: Atom (for code editing); FileZilla Client (for FTP files maintenance); and phpMyAdmin (for database management). The system was evaluated by means of a questionnaire created for this purpose, which was completed by 41 workers. Results and final considerations: The results indicate that the platform is useful, innovative, and applicable to various worker populations. Health informatics is a continuously expanding area. Thus, efficient and effective information collection and maintainance systems are essential.

Variability among Capsicum baccatum accessions from Goiás, Brazil, assessed by morphological traits and molecular markers.

Capsicum peppers are native to the Americas, with Brazil being a significant diversity center. Capsicum baccatum accessions at Instituto Federal (IF) Goiano represent a portion of the species genetic resources from central Brazil. We aimed to characterize a C. baccatum working collection comprising 27 accessions and 3 commercial cultivars using morphological traits and molecular markers to describe its genetic and morphological variability and verify the occurrence of duplicates. This set included 1 C. baccatum var. praetermissum and 29 C. baccatum var. pendulum with potential for use in breeding programs. Twenty-two morphological descriptors, 57 inter-simple sequence repeat, and 34 random amplified polymorphic DNA markers were used. Genetic distance was calculated through the Jaccard similarity index and genetic variability through cluster analysis using the unweighted pair group method with arithmetic mean, resulting in dendrograms for both morphological analysis and molecular analysis. Genetic variability was found among C. baccatum var. pendulum accessions, and the distinction between the two C. baccatum varieties was evident in both the morphological and molecular analyses. The 29 C. baccatum var. pendulum genotypes clustered in four groups according to fruit type in the morphological analysis. They formed seven groups in the molecular analysis, without a clear correspondence with morphology. No duplicates were found. The results describe the genetic and morphological variability, provide a detailed characterization of genotypes, and discard the possibility of duplicates within the IF Goiano C. baccatum L. collection. This study will foment the use of this germplasm collection in C. baccatum breeding programs.

Use of Foliar Fertilizers for the Specific Physiological Management of Different Soybean Crop Stages

In addition to essential macronutrients and micronutrients, bioregulators, biostimulants or bioactivators are being increasingly used on agricultural crops with important outcomes. Therefore, improved knowledge on the functioning of these chemicals on plants is needed. Based on the assumption that foliar fertilizers applied at specific times promote soybean growth, development and yield, the aim of the present study was to evaluate the biometric, biomass, physiological, nutritional and grain yield parameters to increase knowledge about specific fertilizers applied alone or in combination and at different stages of soybean growth and development. The present study was performed in partnership between the Goiano Federal Institute (Instituto Federal Goiano), Campus Rio Verde, state of Goiás (GO), Brazil, and the company Tecno Nutricao Vegetal e Biotecnologia Ltda. A randomized block experimental design was used with four replicates. The biometric, physiological, nutritional and yield data were subjected to analysis of variance followed by Tukey’s test when significant differences were found at p 0.05 using the SISVAR software. In the emergency and early use of Tonik combined with Nodumax and PreventCoMo, in the vegetative phase, the Lumix combined with Vivat or VivatMn in the reproductive stage of flowering, 2 application Tripper combined with VivatB at a dose of 500 ml·ha-1 and reproductive phase of grain filling, 2 application Apport at a dose of 500 g·ha-1 gave the best results.

Feeding Behavior of Beef Cattle Fed Different Forages and Housed in Individual or Collective Pens

The understanding of feeding behavior may be useful to evaluate the performance of animals fed different diets. Twenty-four non-castrated Red Norte × Nelore males with an average initial body weight of 439.8 ± 59.6 kg and 21.7 ± 2.7 months of age were distributed in three experimental groups, and housed in individual (twelve animals) or collective pens (twelve animals in three collective pens) at the Dairy and Beef Research and Education Center of the Instituto Federal Goiano (Ipora Campus). The experiment lasted 84 days (14 of adaptation and 70 days for data collection). Animals were fed diets containing sugar cane in natura (CI), sugar cane silage (SCS) or corn silage (CS) as sources of forage. Feeding behavior was determined every 14 days for one-hour intervals beginning at 0, 1, 5, and 9 hours post-feeding. Eating, resting and rumination activities were monitored for three-minute intervals through visual observations from individual animals. Time spent with eating was greater (P<0.05) for CS (21.8 ± 1.2 minutes/hour) and time spent with resting was greater (P<0.05) for CI and SCS (38.8 and 36.5 ± 1.5 minutes/hour, respectively). Animals housed individually increased (P<0.05) time spent with both eating (19.7 ± 1.0 minutes/hour) and rumination (8.2 ± 0.6 minutes/hour), while time spent with resting was greater (P<0.05) for the collective pen-housing (38.9±1.2 minutes/hour). Corn silage can be recommended for beef cattle feeding in feedlot system due to an increased time spent with eating.

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The lack and/or inconsistent behavior of results found in literature have limited Azospirillum use in maize crops. In this regard, this study aimed at evaluating the performance and chlorophyll a fluorescence of maize hybrids inoculated with Azospirillum brasilense under different nitrogen levels and protected crop conditions with nutrient solution. The experiment was conducted in a greenhouse at Instituto Federal Goiano, Rio Verde Campus. Adapted jars from Leonard were used in the experiment. For each bottle, 1.5 kg of substrate with washed sand and vermiculite in a proportion of 1:1 and nutrient solution of Sarruge was used. The experiment was conducted in a completely randomized design in a 4 × 2 × 2 factorial arrangement with four replications, totaling 160 treatments: four maize hybrids: simple hybrid– H1 (NS 90); modified simple hybrid– H2 (AS 1581); double hybrid– H3 (DKB 310); triple hybrid– H4 (ATL 310); with absence and presence of N (NP and NA) and absence and presence of inoculation (IP and IA). Physiological evaluations of chlorophyll a fluorescence using a modulated portable fluorometer, MINI-PAM model were performed at the end of the experiment. Initial fluorescence (F0), maximum fluorescence (Fm), potential quantum yield (Fv/Fm) variable fluorescence/maximum fluorescence), effective quantum yield (ΔF/Fm’), photochemical dissipation (qp), non-photochemical dissipation (qn and NPQ) and electron transport rate (ETR) were determined. On average, there was a difference in ETR of about 34% between treatments. For H4, it was observed that Fv/Fm was lower with inoculant when compared with plants without inoculation, a difference of approximately 11%, on average, was observed in value of Fv/Fm ratio. Due to better efficiency in absorption and utilization of nitrogen promoted by bacteria (A. brasilense), inoculated maize hybrids showed a good photosynthetic performance. Key words: biological nitrogen fixation, nitrogen economy, maize hybrids.

BioCell: DESENVOLVIMENTO, APLICAÇÃO E AVALIAÇÃO DE UM JOGO DIDÁTICO COMPUTACIONAL

Os jogos computacionais vem se destacando em varios estudos como otimosfacilitadores do processo ensino-aprendizagem. Com isso, o objetivo deste trabalhofoi o de elaborar um jogo computacional voltado para a disciplina de Biologia Celular,para avaliar o uso do mesmo como material didatico. O jogo foi criado no aplicativodo sistema operacional Linux, denominado Impress, o mesmo foi chamado JogoBioCell, o qual apresentava tres fases: divisao celular, organelas citoplasmaticas esintese de proteinas. Este trabalho foi aplicado e avaliado por uma turma do 2o anodo curso Tecnico de Biotecnologia Integrado ao Ensino Medio do Instituto FederalGoiano - Campus Urutai. Foram aplicados questionarios apos o jogo para observarqual foi a opiniao dos educandos sobre esta metodologia. Pode-se observar que amaioria dos alunos, 93,3% afirmaram que este tipo de material e muito interessante,pois e possivel tornar o processo de aprendizagem diversificado, sendo uma forma amais de aprender. Com isso, conclui-se que o jogo computacional pode ser umimportante recurso de aprendizagem, desde que o professor, nao deixe de cumprir oseu papel, que e o de orientador e mediador diante do processo ensinoaprendizagem.

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Thrips, Thrips tabaci Lind. (Thysanoptera: Thripidae), is a key pest of garlic in Brazil. This study aimed to evaluate the influence of spacing on T. tabaci infestation of a garlic crop. The experiment was conducted at the experimental farm of the Goiano Federal Institute (Instituto Federal Goiano – IF Goiano) - Campus Urutai. The experimental design was a randomized block with nine treatments and spacing in single rows (0.20 × 0.10 m, 0.25 × 0.10 m and 0.30 × 0.10 m) and double rows (0.20 × 0.10 × 0.10 m; 0.20 × 0.15 × 0.08 m; 0.25 × 0.10 × 0.10 m; 0.25 × 0.15 × 0.08 m; 0.30 × 0.10 × 0.10 m; and 0.30 × 0.15 × 0.08 m). The Chonan 15 genotype was used in three replicates. At 30, 50 and 70 days after emergence (DAE), evaluations on the following features were carried out: leaf length, number of leaves, angle between the two central leaves, damage and number of thrips per plant. At the end of the crop cycle, the plants were harvested. Individual cured bulb mass, estimated commercial yield, number of cloves per bulb and bulb diameter were also evaluated. Spacing influenced the angle between the central leaves, with spacing of 0.30 × 0.15 × 0.08 m, among the least dense spacing, producing the widest angle (26.96o), suffered one of the highest degrees of insect damage. A spacing of 0.25 × 0.10 m had the highest number of thrips per plant (2.99). Spacing influenced production, with the highest yield occurring with a spacing of 0.25 × 0.15 × 0.08 and 0.30 × 0.10 × 0.10 m (14.37 and 13.51 t/ha, respectively). The least dense spacing produced the largest bulb diameter (42.80 mm) and mass (30.66 g). Key words: Allium sativum, insect, Thrips, plant architecture, non preference.

Production and nutritional characteristics of sunflowers and paiaguas palisadegrass under different forage systems in the off season

The high efficiency of sunflowers in extracting water from the soil under water stress conditions is a factor that promotes sunflower cultivation in the offseason. Therefore, sunflowers have been intercropped with grasses of the Brachiaria genus in crop-livestock integration systems. However, little is known of sowing methods for intercropping; thus, the present study aimed to assess sunflower agronomic traits and the production and nutritional characteristics of Paiaguas palisadegrass under different forage systems in the offseason in the midwest region of Brazil. The experiment was conducted at the Federal Institute of Goias (Instituto Federal Goiano), Rio Verde Campus in a randomized block experimental design with four replicates. The treatments consisted of the following forage systems: sunflower monocropped; Paiaguas palisadegrass monocropped; sunflower rows intercropped with Paiaguas palisadegrass; sunflower inter-row intercropped with Paiaguas palisadegrass; and sunflower oversown and intercropped with Paiaguas palisadegrass. The results show that the sunflower rows intercropped with Paiaguas palisadegrass negatively affect the agronomic traits of sunflower; thus, inter-row sowing and oversowing are recommended. Sowing Paiaguas palisadegrass with oversown sunflower for forage production is hampered by intercropping and shows low forage production. In turn, the intercropped sowing method had no effect on the nutritional characteristics of the produced forage. Intercropping sunflowers with Paiaguas palisadegrass in the offseason has the potential to provide a promising cropping method for the production of achenes and after harvest enables the availability of forage with good nutritional value for use in the offseason in the midwest region of Brazil.

Learning nucleic acids solving by bioinformatics problems.

The article describes the development of a new approach to teach molecular biology to undergraduate biology students. The 34 students who participated in this research belonged to the first period of the Biological Sciences teaching course of the Instituto Federal Goiano at Urutaí Campus, Brazil. They were registered in Cell Biology in the first semester of 2013. They received four 55 min-long expository/dialogued lectures that covered the content of "structure and functions of nucleic acids". Later the students were invited to attend four meetings (in a computer laboratory) in which some concepts of Bioinformatics were presented and some problems of the Rosalind platform were solved. The observations we report here are very useful as a broad groundwork to development new research. An interesting possibility is research into the effects of bioinformatics interventions that improve molecular biology learning.

Automedicação entre estudantes de uma instituição de ensino superior de Goiás

Introdução: A automedicação tem sido considerada uma prática crescente nos dias atuais. Objetivo: Conhecer aspectos ligados à prevalência da automedicação e quais medicamentos são mais usados entre estudantes. Métodos: Trata-se de um estudo observacional com delineamento transversal, no qual 160 alunos responderam a um questionário autoaplicado contendo questões diversificadas. Para a análise dos dados foi utilizada estatística descritiva, no software Microsoft Excel. Resultados: Dos participantes, 52,4% eram do sexo masculino e a média de idade foi de 21,5 anos. A prevalência geral da automedicação foi de 68,3%. Os fatores que levam os acadêmicos da instituição investigada a utilizarem medicamentos sem prescrição são principalmente a orientação para a prática da automedicação provinda de fontes de informação não ligadas à área médica e sinais e/ou sintomas relacionados a afecções que causam cefaleias, febre e dores no corpo. Além disso, verificou-se que os estudantes de diferentes cursos superiores da instituição investigada apresentam perfil de automedicação semelhante, com prevalência do uso de medicamentos da classe dos analgésicos, antipiréticos, antibióticos e anti-inflamatórios (não tarjados e de tarja vermelha). Também foi observado pouco conhecimento sobre os efeitos adversos ou sobre as contraindicações do medicamento consumido. Conclusão: A automedicação é um problema grave e importante no âmbito dos cursos superiores do Instituto Federal Goiano, Campus Urutaí, e não se restringe aos universitários ligados apenas às áreas médicas e/ou biológicas, sendo necessária a realização de ações/atividades que contribuam para o uso racional de medicamentos.

Intrusão radicular em irrigação localizada subsuperficial na cana-de-açúcar

Currently few studies are conducted on evaluation of methods to quantify the field the presence of root intrusion for that control measures can be taken at the right time and consequently reducing productivity losses.Given the above, the aim of this work was to evaluate the occurrence of root intrusion in cultivation of sugar cane irrigated by subsurface drip irrigation under field conditions. The experiment was conducted at the experimental station of the Instituto Federal Goiano– Campus Rio Verde – GO. The plots had three grooves in double line spacing of 1.8 m between rows drippers, 0.4 m between rows and 8 m long. The cultivated variety is the RB 85-5453. The experimental design was a randomized block with four replications. The treatments consisted of five levels of replacement water (100, 75, 50, and 25%). The driplinewas buried at 0.20 m depth from the soil surface, in the middle of the double line. Were demarcated 16 drippers for monitoring irrigation, expressing the values of flow in L h-1, the evaluations were performed every 25 days for a total of 10 ratings.The root intrusionindex was generated from the relationship between flow calibration, measured in the laboratory (1 L h-1) and the residual flow determined by the volume of water collected during five minutes. Theroot intrusion index, variation coefficient, and degree of clogging decreases with increasing replacement waterand the uniformity coefficient inversely distribution increases with increasing replacement water.

Alterações nos teores de macronutrientes em latossolo vermelho cultivado com cana-de-açúcar

The sugarcane is characterized by being a crop with high technology applied to the production system. The aim of this study was to evaluate changes in macronutrient soil cultivated with sugarcane with and without nitrogen fertilizer and irrigated with different water replacement blades. This experiment was carried out in an experimental field belonging to the Instituto Federal Goiano Campus Rio Verde – GO in dystoferric Red Latosol (Oxisol). It was used a variety RB 85-5453, irrigated with five blades (0, 25, 50, 75 and 100% water replacement) and with or without nitrogen (0 and 100 kg N ha-1). It was evaluated the average yield of sugarcane and chemical analysis of the soil before and after the application of nitrogen fertilizer in two layers soil surface (0 to 30 cm) and subsurface (30 to 60 cm). Water replacement with nitrogen changed the soil macronutrients to the end of the split fertilization via subsurface drip irrigation. Water replacement is complete, 100% of the blade, containing nitrogen gave the highest yield of sugarcane. Areas enriched with nitrogen and with 100% water replacement had lower amounts of soil nitrogen, phosphorus, calcium and sulfur to the end of the cycle, due to increased plant uptake of sugarcane.

Podridão apical e escaldadura em frutos de pimentão submetidos a estresse hídrico e doses de silício

As respostas da planta de pimentão submetida ao estresse hídrico são pouco conhecidas. A busca por indutores de resistência ao estresse hídrico (como a adubação silicatada) pode ser uma importante medida para reduzir os efeitos negativos desse estresse abiótico. Dessa forma, o objetivo desse estudo foi testar a hipótese de que a adubação silicatada aplicada via foliar pode atenuar a incidência de anomalias causadas pelo estresse hídrico na qualidade dos frutos de pimentão. O experimento foi conduzido em ambiente protegido na área experimental de olericultura do Instituto Federal Goiano, câmpus Urutaí-GO. O delineamento utilizado foi em blocos casualizados, com parcela subdividida no espaço, em esquema fatorial 3x4, sendo três doses de silício (0,0, 4,3, 8,6 kg ha-1) na forma de silicato de potássio (K2SiO3) e quatro tensões de água no solo de aproximadamente -15, -25, -35 e -45 kPa, totalizando 12 tratamentos, com quatro repetições. Os níveis de água no solo para a produção do pimentão, cultivar híbrido Magali-R, variaram desde a suficiente oferta de água até o déficit hídrico e, também, valores intermediários. Vinte e uma aplicações foliares de silicato de potássio foram efetuadas semanalmente ao longo do experimento. O aumento da tensão de água no solo e a ausência do silicato de potássio estiveram correlacionados com a incidência da podridão apical nos frutos. Nenhum dos dois fatores estudados influenciou a incidência de escaldadura nos frutos de pimentão. No total foram 129 frutos de pimentão com podridão apical e 70 com escaldadura, representando 2,14% e 1,16% do total de frutos colhidos.

Aves do Campus do Instituto Federal de Educação em Iporá, Estado de Goiás

Few studies were developed with urban birds in the interior of the GoiasState. The aim of this paper was to analyse the bird community structure in “Instituto Federal Goiano”, municipalityof Ipora. Forty-eight samples were taken weekly from September 2010 to August 2011. The records were made along one trail in the perimeter of the area. We recorded a total of 73 species distributed in 35 families. Tyrannidae was the family with most richness (9.6% from total). The richness estimation based on Jacknife1 analysis was 88.6, demonstrating a significant estimation to the number of species. The distinction in occurrence categories shows a most number of occasional and probable resident species, but few resident species. The inspection in trophic categories shows a prevalence of the omnivore and insectivore species, as we normally waiting to the anthropized areas. The majority of species were classified in low sensitivity to human disturbance. This study shows the importance of the study area for maintenance of a bird community. We recommended other similar studies to increase knowledge of the bird communities in urbanized localities in the midwest of Goias state.

Alterações morfométricas em grãos de soja durante o processo de secagem

The study aimed to evaluate the drying curves and the effects of drying temperature on the volumetric shrinkage of the grain mass and geometric diameter of the soy bean M7211RR. Were used soy bean the cultivar M7211RR harvested in Santa Helena de Goias-GO, with an initial moisture content of approximately 0.30 d.b. (decimal dry basis) and dried to 0.13 (d.b.). The experiment was conducted at Laboratorio de Pos-Colheita de Produtos Vegetais of the Instituto Federal Goiano – Câmpus Rio Verde. During the drying process, the orthogonal axes (length, width and thickness) of soy beans were measured to determine the geometric diameter. To obtain the volumetric shrinkage, the soy bean was dried on trays and then placed in graduated cylinder and thus reducing the volume of product was monitored throughout the drying. Increasing the temperature of 50 °C to 90 °C decreases the drying time of 7.66 hours to 1.98 hours, streamlining the process for 3.87 times. The rate of shrinkage and the diameter geometric of soybean decreases during drying, and this effect is intensified with increasing temperature.

Alterações morfométricas em grãos de soja durante o processo de secagem

The study aimed to evaluate the drying curves and the effects of drying temperature on the volumetric shrinkage of the grain mass and geometric diameter of the soy bean M7211RR. Were used soy bean the cultivar M7211RR harvested in Santa Helena de Goiás-GO, with an initial moisture content of approximately 0.30 d.b. (decimal dry basis) and dried to 0.13 (d.b.). The experiment was conducted at Laboratório de Pós-Colheita de Produtos Vegetais of the Instituto Federal Goiano – Câmpus Rio Verde. During the drying process, the orthogonal axes (length, width and thickness) of soy beans were measured to determine the geometric diameter. To obtain the volumetric shrinkage, the soy bean was dried on trays and then placed in graduated cylinder and thus reducing the volume of product was monitored throughout the drying. Increasing the temperature of 50 °C to 90 °C decreases the drying time of 7.66 hours to 1.98 hours, streamlining the process for 3.87 times. The rate of shrinkage and the diameter geometric of soybean decreases during drying, and this effect is intensified with increasing temperature.

Propriedades físicas das sementes de pinhão-manso ao longo da secagem em diferentes temperaturas

Given the prominence of jatropha ( Jatropha curcas L.) in the national and international importance of knowledge of their physical properties contribution to the development for machinery to assist in post-harvest processing of this crop seeds, the objective of the work was to determine the porosity and the bulk density and true density of jatropha seeds subjected to different drying air conditions. The experiment was conducted at the Instituto Federal Goiano – Câmpus Rio Verde, using jatropha seeds, that were subjected to drying in an oven with forced air circulation. The experiment was a completely randomized design in a factorial design (5 x 7) having factors like the different temperatures (45, 60, 75, 90 and 105 o C) and moisture content (33.33; 28.56; 25.37; 21.26, 17.36, 13.04 and 9.09 (% w.b.)), previously established. It was found that the temperature of the drying air and the seeds moisture content influenced the bulk density and porosity of the seeds of jatropha. Since the true density is influenced only by the seeds moisture content. The reduction moisture content decrease of the porosity and in the bulk density and true density of jatropha seeds and it is not possible to identify a distinct behavior regarding temperatures used.

Transportation of Amazon river prawnMacrobrachium amazonicumjuveniles in different biomass densities

Aquaculture ResearchVolume 45, Issue 7 p. 1264-1268 Short Communication Transportation of Amazon river prawn Macrobrachium amazonicum juveniles in different biomass densities Luciane Sperandio, Corresponding Author Luciane Sperandio São Paulo State University – Aquaculture Center, Jaboticabal, SP, BrazilCorrespondence: L. Sperandio, Sperandio Instituto Federal Goiano, Campus Urutaí, Rodovia Geraldo Silva Nascimento, km 2,5 Zona Rural, Urutaí – GO. Zip code 75790-000. E-mail: [email protected]Search for more papers by this authorMichael Bernard New, Michael Bernard New Aquaculture without Frontiers, Wroxton Lodge, Marlow, Bucks, UKSearch for more papers by this authorWagner Cotroni Valenti, Wagner Cotroni Valenti São Paulo State University – UNESP, São, Vicente, SP, BrazilSearch for more papers by this author Luciane Sperandio, Corresponding Author Luciane Sperandio São Paulo State University – Aquaculture Center, Jaboticabal, SP, BrazilCorrespondence: L. Sperandio, Sperandio Instituto Federal Goiano, Campus Urutaí, Rodovia Geraldo Silva Nascimento, km 2,5 Zona Rural, Urutaí – GO. Zip code 75790-000. E-mail: [email protected]Search for more papers by this authorMichael Bernard New, Michael Bernard New Aquaculture without Frontiers, Wroxton Lodge, Marlow, Bucks, UKSearch for more papers by this authorWagner Cotroni Valenti, Wagner Cotroni Valenti São Paulo State University – UNESP, São, Vicente, SP, BrazilSearch for more papers by this author First published: 06 December 2012 https://doi.org/10.1111/are.12079Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume45, Issue7June 2014Pages 1264-1268 RelatedInformation

Characterization of the effects of macronutrient deficiencies in mangabeira seedlings

Knowledge of the mineral nutrition requirements of mangabeira (Hancornia speciosa Gomes) is relatively scarce and rudimentary because there is a lack of consistent data concerning its nutritional demands at different developmental stages. The aim of this research was to characterize the visual symptoms of macronutrient deficiencies and to evaluate the effects of these deficiencies on the growth, the production of dry matter, and the leaf content of mangabeira. To achieve this goal, a greenhouse experiment was conducted at the Goiano Federal Institute (Instituto Federal Goiano) in Rio Verde - GO, from January to June 2011 in which mangabeira plants were arranged in a random block design and grown in nutrient solutions. This experiment was replicated four times. The plants were treated with either a complete nutrient solution or a nutrient solution from which the individual macronutrient of interest (nitrogen (N), phosphorous (P), potassium (K), magnesium (Mg), calcium (Ca), or sulfur (S) had been omitted. The omission of a macronutrient from the nutrient solution resulted in morphological alterations that were characteristic symptoms of the particular nutritional deficiency and caused decreases in growth and dry matter mass production. The accumulation of macronutrients displayed the following order in mangabeira leaves: N&gt;K&gt;Ca&gt;P&gt;S&gt;Mg.

Crescimento e produtividade do pinhão-manso em função do espaçamento e irrigação

Objetivou-se, com este trabalho, avaliar o efeito do espaçamento e da complementação hídrica no crescimento e produtividade do pinhão-manso. O experimento foi conduzido na área experimental do Instituto Federal Goiano, campus Rio Verde,GO, no período de 12/09/2009 a 30/04/2011, no delineamento de blocos casualizados com três repetições, os fatores foram sete espaçamentos e duas condições hídricas, cada parcela constituída de 16 plantas, sendo as quatro plantas centrais a área útil. Aos 60 dias após o transplantio das mudas foram feitas, bimensalmente, as avaliações dos parâmetros altura de planta, número de ramificações, área foliar e produtividade. O fator espaçamento não apresentou diferença significativa para os parâmetros altura, ramificação e produtividade e a complementação hídrica teve efeito significativo para altura aos 240 dias após transplantio. A produção de sementes em sequeiro foi maior no espaçamento 3 x 3 e com complementação hídrica no espaçamento 4 x 4.