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| Registros recuperados: 74 | |
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| Souza, Gabriel Elias de; Steiner, Fábio; Zoz, Tiago; Oliveira, Silvia Sanielle Costa de; Cruz, Sihélio Júlio Silva. |
| Em um programa de controle de qualidade, a avaliação do vigor de sementes é fundamental e necessária para o sucesso da produção. Métodos que possibilitam a rápida avaliação do vigor das sementes são de grande interesse no controle de qualidade das empresas produtoras. O objetivo foi avaliar a eficiência de diferentes testes de vigor na avaliação da qualidade fisiológica de sementes de algodão (Gossypium hirsutum L., cv. FM 951LL), buscando a diferenciação de lotes. O estudo foi realizado no Laboratório de Análises de Sementes da Universidade Estadual Paulista – FCA/UNESP, Botucatu–SP, em dezembro de 2011. O delineamento experimental utilizado foi o inteiramente ao acaso com cinco tratamentos e quatro repetições. Cinco lotes de sementes da Cultivar FM 951LL... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia. |
| Ano: 2015 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/237 |
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| Bardiviesso, Diógenes Martins; Maruyama, Wilson Itamar; Pessato, Luis Eduardo; Pereira, Ana Carolina Bueno; Modesto, Joyce Helena. |
| As recomendações de adubação potássica para a cultura do meloeiro variam de região para região, sendo essas recomendações influenciadas principalmente pelas condições de clima, solo, e condições de cultivo. Portanto, o objetivo foi avaliar doses de potássio sobre a produtividade e a qualidade dos frutos de duas cultivares de meloeiro produzidas em céu aberto no município de Cassilândia-MS. O delineamento experimental foi de blocos casualizados com quatro repetições, em esquema fatorial 2x5 (cultivares x doses de potássio), utilizando-se duas cultivares, o híbrido Amarelo Giorgio (Cucumis melo var. inodorus), e o híbrido Cantaloupe Rafael (Cucumis melo var. cantalupensis) e cinco doses de potássio (0, 60, 120, 180 e 240 kg ha-1 de K2O) aplicadas no plantio... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia. |
| Ano: 2015 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/244 |
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| Silva Júnior, Jessé Marques da; Universidade Federal de Lavras (UFLA); Rodrigues, Marcelo; Universidade Federal de Lavras (UFLA); Castro, Evaristo Mauro de; Universidade Federal de Lavras (UFLA); Bertolucci, Suzan Kelly Vilela; Universidade Federal de Lavras (UFLA); Pasqual, Moacir; Universidade Federal de Lavras (UFLA). |
| The environmental and nutritional conditions during plant growth can influence cell differentiation, resulting in anatomical and physiological adaptations. The objective of this study was to investigate the anatomical characteristics and chlorophyll content of L. purpurata during in vitro propagation when different concentrations of urea were applied. After 120 days of culture in a greenhouse, the growth characteristics, chlorophyll content, leaf anatomy and root features were assessed. Plants cultivated in a medium containing 75% urea exhibited modifications in their growth, increase in the number of leaves and roots, changes in the leaf and root dry matter content. There was an increase in the contents of “a” and “b” chlorophyll in plants treated with... |
| Tipo: Pesquisa científica |
Palavras-chave: 5.00.00.00-4 Laelia purpurata; Cultivation in vitro; Sources of organic nitrogen Ciências Agrárias; Agronomia. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15356 |
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| Rossi, Evandrei Santos; Faria, Marcos Ventura; Mendes, Marcelo Cruz; Neumann, Mikael; Gabriel, André; Del Conte, Murilo Viotto. |
| The aim of this research was to evaluate vitreousness in commercial corn hybrids with flint and dent grains and to study the effect of this characteristic on agronomic behavior, nutritional value, and ruminal degradability of grains harvested in silage maturity. Twelve commercial corn hybrids were evaluated. They were divided in two groups (six with flint grains and six with dent grains). The experiments were conducted in two municipalities represented by Guarapuava and Laranjeiras do Sul, both in Paraná State. The harvest for the grain quality analysis was performed at ¾ of the milk line stage in the grain. The following characteristics were evaluated: grain yield, grain yield in silage maturity, vitreousness, ruminal digestibility of grain, neutral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Produção Vegetal endosperm; Protein matrix; Degradability; Grain texture; Zea mays L. Vitreosidade em grãos de milho. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28703 |
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| Lopes, Camila Aparecida; Carvalho, Maria Laene Moreira de; Vasconcelos, Michelle Conceição; Ribeiro, Ana Maria Pereira; Santos, Heloísa Oliveira dos. |
| Evaluation of the physiological potential of maize seeds during the certification process is performed by a germination test. However, some tests show a delay in the growth of aerial seedling organs that does not reflect seed lot behavior in the field. This study aims to investigate the effects of genotype, water, light and temperature on differential primary leaf growth compared to coleoptile length in maize seedlings. Seeds from two simple hybrids and their reciprocal crosses that showed slow primary leaf growth were evaluated according to physiological quality, morphology, histochemistry, and enzymatic expression. There were differences among maize genotypes regarding initial primary leaf growth when compared to the coleoptile, especially when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências agrárias; Agronomia; Fitotecnia ea mays L.; Germination test; Lignin; Enzymes. Qualidade de sementes. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35366 |
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| Cavalcante, Natan Ramos; Krause, Willian; Viana, Alexandre Pio; Silva, Celice Alexandre; Porto, Keithi Karla Xavier; Martinez, Roberto Antonio Savelli. |
| The aim of this work was to verify the efficiency of the anticipated selection of superior plants in intrapopulation breeding of passion fruit. The experiment was conducted at the Mato Grosso State University experimental area. Eight populations were evaluated. Planting was carried out in August 2010 following the randomized blocks experimental design, with ten repeats and ten plants per plot. The production characteristics of mass and number of fruits were evaluated from data obtained from two cultivation periods, the first year and the full two-year cycle of culture. Estimates of genetic parameters indicate the possibility of selection gains. The accuracies of fruit production, fruit number and fruit mass characteristics had high magnitude, independent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Genética e melhoramento selection gain; Passiflora edulis Sims; Productivity. Melhoramento vegetal. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31022 |
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| Heredia Zárate, Néstor Antonio; Universidade Federal da Grande Dourados; Vieira, Maria do Carmo; Universidade Federal da Grande Dourados; Faccin, Fabiane Cargnin; Universidade Federal da Grande Dourados; Heredia Vieira, Danilo Augusto; Universidade Estadual de Maringa; Gassi, Rosimeire Pereira; Universidade Federal da Grande Dourados; Santos, Anna Luiza Farias dos; Universidade Federal da Grande Dourados. |
| This study aims to discover the agro-economic yield of the ‘Comum’ tannia, which was propagated with five seedling types (Extra, Large, Medium, Small and Tiny) and grown both with and without a hilling operation during three crop seasons. In each agricultural year, the treatments were arranged as a 5 x 2 factorial in a randomized complete block design with four replications. The harvests were conducted 238 (2007-08), 231 (2008-09) and 237 (2009-10) days after planting. The data were submitted to an analysis of variance each year. The plants produced from large seedlings and RM-corms had a higher fresh leaf weight. Additionally, the dry weight of the RFC-commercial cormels and RFNC-non-commercial cormels was higher with extra seedlings. The plants grown... |
| Tipo: Pesquisa de campo |
Palavras-chave: Agronomia; Fitotecnia; Tratos culturais Xanthosoma mafaffa; Propagation materials; Cultural treatments; Yield; Income Tratos culturais. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16152 |
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| Perin, Lais; Peil, Roberta Marins Nogueira; Höhn, Daniela; Rosa, Douglas Schulz Bergman da; Wieth, Albertina Radtke; Grolli, Paulo Roberto. |
| The use of raw rice husk as substrate allows the use of crop systems that promote the recirculation of leachate in long crop cycles. Mini tomatoes present relatively low demand for photoassimilates. Thus, partial defoliation of the sympodium could benefit the crop without damage to the production or quality of the fruits. The objective of this work was to evaluate the plant growth, fruit yield and fruit quality of Cherry Hybrid Wanda and Grape Hybrid Dolcetto mini tomatoes cultivated in two recirculation crop systems (pots and troughs), using raw rice husk as substrate, under three defoliation conditions (without defoliation, removal of one and two leaves of the sympodium). The Cherry cultivar showed higher plant growth, fruit yield and mean fruit size.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias; Agronomia; Fitotecnia cherry; Grape; Growth; Solanum lycopersicum; Rice husk; Substrate. Olericultura. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/34992 |
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| Marcondes, Mariana Martins; Faria, Marcos Ventura; Mendes, Marcelo Cruz; Gabriel, Andre; Neiverth, Victor; Zocche, Jean Carlos. |
| This study aimed to evaluate the performance of 46 maize lines (S4) obtained from crosses between the commercial hybrids Penta x P30F53 in topcrosses with the commercial simple cross hybrid Dow8460 (tester) and checks (hybrids Penta, P30F53, Dow8460 and Status). The grain yield was evaluated in two environments in Guarapuava, Paraná State, and the effects of genotype, environment and genotype x environment interaction were significant. The grain yield of the topcross hybrids ranged from 8,416 to 13,428 kg ha-1. The agronomic characteristics of the forage and the bromatological characteristics of the silage were evaluated in environment 1. The green mass yield of the forage ranged from 48,767 to 87,714 kg ha-1 and the dry mass yield ranged from 14,749 to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitotecnia; Melhoramento Genético Vegetal Zea mays; Acid detergent fiber; Neutral detergent fiber; Silage; Plant breeding Melhoramento Genético de Milho. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28307 |
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| Sousa, Ricardo Silva de; Nunes, Luis Alfredo Pinheiro Leal; Lima, Aurenivia Bonifacio de; Melo, Wanderley Jose de; Antunes, Jadson Emanuel Lopes; Araujo, Ademir Sérgio Ferreira de. |
| Chromium (Cr) accumulation in soil and plants has been reported after successive applications of tannery sludge, which is a matter of concern because Cr can promote environmental contamination and affect the food chain. In this study, we evaluated the growth of and Cr accumulation in maize and cowpea after seven years of consecutive applications of composted tannery sludge (CTS) under field conditions. The experiment consisted of application of CTS at five levels: 0 (control), 2.5, 5, 10, and 20 Mg ha-1 (dry basis). The growth of and Cr accumulation in maize and cowpea were evaluated at 75 and 65 days after plant emergence, respectively. CTS application increased the shoot biomass of maize and cowpea. Accumulation of Cr was similar for both plant species,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciencias Agrarias; Agronomia; Ciencia do Solo waste management; Tannery sludge; Plant and soil interaction; Metals. Solos. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35361 |
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| Cunha, Marcelo dos Santos; Cavalcante, Ítalo Herbert Lucena; Mancin, Adriana Cristina; Albano, Francisca Gislene; Marques, Adenaelson de Sousa. |
| The custard apple (Annona squamosa L.), also known as the sugar apple, is a fruit species native to Brazil that has been poorly studied, especially in relation to the effect of humic substances on its fruit quality and yield. An experiment was conducted from December 2010 to November 2011 to evaluate the fruit quality and yield of the custard apple as a function of nitrogen fertilising and the use of humic substances. The experimental design consisted of randomised blocks, with treatments distributed in a factorial arrangement (4 x 2), using four nitrogen doses (0, 100, 175 and 250 g of N plant-1) and two humic substance applications (with and without humic substances), with four replications. The fruit yield and fruit characteristics, such as fruit mass,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitotecnia Annona squamosa L.; Fruit yield; Humic acids Fruticultura. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19511 |
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| Florido, Flavia Garcia; Universidade Federal de São Carlos; Monquero, Patricia Andrea; Universidade Federal de São Carlos; Ribeiro Dias, Ana Carolina; Universidade de São Paulo; Tornisielo, Valdemar; Centro de Energia Nuclear na Agricultura. |
| Green manure species that are tolerant to the herbicide imazaquin can be used in crop rotation schemes that aim to reduce herbicide carryover to sensitive plants such as sunflower or corn. Three different doses of imazaquin (0, 0.15 and 0.28 kgha-1) were applied during the pre-emergence growth stage to Dolichos lablab, Cajanus cajan, Canavalia ensiformis, Crotalaria juncea, C. breviflora, C. spectabilis, Mucuna deeringiana, M. cinerea, M. aterrima, Lupinus albus, Helianthus annuus, Pennisetum glaucum, Avena strigosa and Raphanus sativus, and the results were evaluated in a greenhouse. C. ensiformis and M. cinerea were selected from these species for being the most tolerant, and they were then evaluated for absorption and translocation of 14C-imazaquin in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitossanidade herbicide; Residual; Tolerant species matologia. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17035 |
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| Almeida, Alexsandro Claudio dos Santos; UNIVERSIDADE DE SÃO PAULO; Mingoti, Rafael; USP; Coelho, Rubens Duarte; USP; Lourenço, Leandro Fellet; USP. |
| A modelagem da produção de forragem com o uso de unidades fototérmicas (UF) foi utilizada com sucesso nos capins elefante cv. Napier, Tanzânia e Brachiaria em condições ótimas de adubação e disponibilidade hídrica. Havendo a necessidade de modelos de produção de forragens para diferentes níveis de adubação e de irrigação. Nesse sentido, o objetivo deste trabalho é propor modelos para o capim Tanzânia (Panicum maximum Jacq. cv Tanzânia) sob diferentes lâminas de irrigação (25, 50,75, 100 e 125% da ETc) e adubação nitrogenada em diferentes localidades do Brasil, a partir de unidades fototérmicas. Os modelos foram ajustados para as doses de 0, 30, 60, 110 e 270 kg de N ha-1, doses divididas em aplicações após cada corte, com um ciclo de 35 dias de descanso.... |
| Tipo: Pesquisa em ambiente controlado |
Palavras-chave: Agronomia; Engenharia rural; Irrigação e Drenagem Otimização; Modelagem; Irrigação irrigação e drenagem Optimization; Modeling; Irrigation. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4901 |
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| Matias, Rosemary; Rosa, Ana Carolina; Oliveira, Ademir Kleber Morbeck; Pereira, Kelly Cristina Lacerda; Rizzi, Elvia Silvia; Machado, Alexandre Alves. |
| Cashew (Anacardium occidentale) nut shell liquid (CNSL) has been successfully used in trials as an Aedes aegypti larvicide, but little is known about its environmental effects. In this study, the potential effects of CNSL and a CNSL-based phyto-product formulation on the germination and growth of Lactuca sativa (lettuce), Lycopersicon esculentum (tomato) and Senna obtusifolia (coffee senna) were assessed. The pH of CNSL and the formulation were 6.4 and 6.8, respectively; the electrical conductivities were 2.89 μS cm-1 (CNSL) and 2.21 μS cm-1 (formulation), respectively, and both contained anacardic acid (53.2%) and degradation products. In bioassays for germination and growth, CNSL (25, 50, 100, 150, and 200 mg mL-1), the formulation (100 mg mL-1) and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Ecofisiologia; Sementes Anacardiaceae; Anacardium occidentale; CNSL; Anacardic acid; Allelopathy. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32603 |
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| Nascente, Adriano Stephan; Carvalho, Maria da Conceição Santana; Melo, Leonardo Cunha; Rosa, Paulo Holanda. |
| This study was conducted to measure the effects of the timing of nitrogen fertilization (NF) on soil N-NH4+ and N-NO3-, macronutrient contents in the leaves and grains, and the grain yield of super early genotypes (SEG) of common bean. Field experiments were performed for four growing seasons in an Oxisol soil in Santo Antônio de Goiás, Brazil, using a randomized block experimental design in a split plot scheme. The plots were planted with common bean SEG, and the subplots were the NF timings, including a treatment without N fertilization. The available soil N with improved fertility and medium to high levels of organic matter were enough to meet the N demands of the common bean crop in order to achieve yields of up to 3,000 kg ha-1. Fertilization with N,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitotecnia Phaseolus vulgaris L.; Early application of N; Fertilization; Brazilian Cerrado; Sustainable agriculture; Produção vegetal. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32781 |
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| Genú, Aline Marques; Universidade Estadual do Centro-Oeste; Roberts, Dar; University of California; Demattê, José Alexandre Melo; Universidade de São Paulo. |
| Systematic, physically based acquisition of information regarding soils is required to meet increasing demand in agricultural and environmental systems. The objective of this work is to evaluate the use of multiple endmember spectral mixture analysis (MESMA) for mapping soil attributes within ASTER imagery. A total of 184 georeferenced soil samples were collected from Rafard, São Paulo State, Brazil. These points were overlain on the satellite image to collect spectral data. The laboratory and image information were then arranged and prepared by clustering samples into classes based on the following soil attributes: texture, organic matter, base saturation (V%), CEC and total iron. Following this classification, mean spectral curves were generated for... |
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Palavras-chave: Agronomia; Ciência do Solo remote sensing; Spatial distribution; Geostatistics. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16119 |
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| Registros recuperados: 74 | |
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