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| Registros recuperados: 23 | |
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| Campos, Luiz Henrique Franco de; Usina Iracema; Carvalho, Saul Jorge Pinto de; Programa de Pós-Graduação em Fitotecnia, ESALQ / USP, Piracicaba; Christoffoleti, Pedro Jacob; Prof. Associado, Dep. de Produção Vegetal, ESALQ/USP, Piracicaba; Fortes, Caio; BP Biofuels; Silva, Jader Sahade da; Usina Iracema. |
| A manutenção da palha de cana-de-açúcar sobre a superfície do solo, após colheita sem queima, pode prejudicar a brotação, o perfilhamento e a produtividade da cultura, principalmente em regiões mais frias, além de contribuir para maiores níveis de infestação por cigarrinhas (Mahanarva fimbriolata). Assim sendo, este trabalho foi desenvolvido com o objetivo de avaliar o perfilhamento, o acúmulo de biomassa fresca e a produtividade da soqueira de cana-de-açúcar (var. RB855453), bem como a taxa de infestação por cigarrinhas, quando a cultura foi submetida a três sistemas de manejo da palhada: (i.) palha em área total; (ii.) linha descoberta; e (iii.) aleiramento. Em virtude do rigor experimental do teste de Tukey e da representatividade de cada parcela (2.700... |
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Palavras-chave: Ciências Exatas e da Terra Crescimento; Soqueira; Perfilhamento; Cigarrinha Agronomia Fitotecnia Mecanização Agrícola Growth; Sugarcane ratoon; Tillering; Spittlebug. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3703 |
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| Araújo, Ricardo Alves de; Rodrigues, Rosane Cláudia; Costa, Clésio Santos; Santos, Francisco Naysson Sousa; Lima, Antonio José Temístocles; Rodrigues, Marcônio Martins. |
| This study aimed to evaluate the dynamics, population density of tillers and stability index of Urochloa brizantha in silvopastoral systems composed of babassu palm trees in the Pre-Amazon region. Four systems consisting of different densities of palm trees (80, 131, and 160 palms ha-1) and a monocrop were evaluated. The rates at which the basal tillers appeared in systems with 131 and 160 palms ha-1 were similar to each other and were slower compared to the monocrop pasture and the system with 80 palms ha-1. Despite the variations, the stability index was always higher than 1.0, which infers a compensatory mechanism between tiller appearance and mortality rate, since monocrop pastures and systems with 80 palms ha-1 have a higher rate of tissue... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tiller population density; Continuous stocking; Orbignia phalerata martius; Tillering; Tillering rate. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42445 |
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| Haddade,I.R.; Vasquez,H.M.; Detmann,E.; Silva,J.F.C.; Smith,R.B.; Souza,P.M.. |
| Structural characteristics (total in marked tillers of leaves (NFT), expanded leaves (NCE), green leaves (NFV) and dead leaves (NFS) and number of tillers per plant (NPP)) and morphogenic variables (tillering (TApPP) and rates of total leaf (TApFT), expanded leaf (TApFE) and live leaf (TApFV) appearance) were evaluated in four elephantgrass genotypes (Napier, Cameroon and Pioneiro cultivars and clone CNPGL 91 F27 05). Greenhouse evaluations were carried out every three days, from the 3rd to the 60th day after standardization cutting, according to a completely randomized block design under a factorial treatment scheme (four genotypes and 21 measurement days). The NFT and NCE of the CNPGL 91 F27 05 and Pioneiro genotypes were larger than those of Cameroon... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Elephant grass; Vegetative structure; Structural characteristic; Rate of leaf appearance; Tillering. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600017 |
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| Fioreze,Samuel Luiz; Michelon,Luiz Henrique; Turek,Thaís Lemos; Drun,Robson Pelissari; Dalorsaleta,Julio César Sbardella. |
| ABSTRACT Although source–sink relationships in wheat are well studied, the performance of tillers as transient sinks is still unclear, especially under stress conditions. Thus, this work aimed to study the yield relationships of wheat stems in contrasting genotypes as affected by tiller treatment under stress conditions. Two experiments were conducted under greenhouse conditions using BRS Guamirim (high tillering) and BRS Parrudo (low tillering) wheat cultivars. Four tillering treatments were applied on late tillers in the first growing season (2016) and three in the second (2017): (i) free-tillering, (ii) detillering, (iii) physical suppression (only in the first season) and (iv) “spikes removal”. The main stem and the first four emitted tillers were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Source–sink relationship; Tillering; Drought stress; Defoliation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052020005004203 |
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| Vergara,Carlos; Araujo,Karla Emanuelle Campos; Alves,Luiziene Soares; Souza,Sônia Regina de; Santos,Leandro Azevedo; Santa-Catarina,Claudete; Silva,Krisle da; Pereira,Gilmara Maria Duarte; Xavier,Gustavo Ribeiro; Zilli,Jerri Édson. |
| ABSTRACT The use of dark septate fungi (DSE) to promote plant growth can be beneficial to agriculture, and these organisms are important allies in the search for sustainable agriculture practices. This study investigates the contribution of dark septate fungi to the absorption of nutrients by rice plants and their ensuing growth. Four dark septate fungi isolates that were identified by Internal transcribed spacer phylogeny were inoculated in rice seeds (Cv. Piauí). The resulting root colonization was estimated and the kinetic parameters Vmax and Km were calculated from the nitrate contents of the nutrient solution. The macronutrient levels in the shoots, and the NO3--N, NH4+-N, free amino-N and soluble sugars in the roots, sheathes and leaves were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L.; DSE; NO3−-N; Tillering; Colonization. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100067 |
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| Zoz,Tiago; Steiner,Fábio; Fey,Rubens; Castagnara,Deise Dalazen; Seidel,Edleusa Pereira. |
| Wheat is grown in Brazil, mostly in no-till, a system in which the zinc can become potentially deficient, due to excessive application of acidity corrective and phosphate fertilizers in surface and, or at shallow depths. This study aimed to evaluate the effect of foliar application of zinc in agronomic characteristics and yield of wheat. The experimental design was randomized blocks with five replications. Treatments consisted of four doses of zinc (0, 54, 108 and 216g ha-1 Zn), divided into two foliar applications, the first at tillering (18 days after plant emergence) and the second at the boot stage (65 days after emergence). Foliar application of zinc increased the number of fertile tillers and yield of wheat, however, have little effect on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Plants nutrition; Tillering; Foliar fertilization. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000500004 |
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| Joaquín Cancino, Santiago. |
| El objetivo del estudio fue determinar la producción estacional y anual de forraje, composición morfológica, características estructurales y dinámica de ahijamiento de praderas de pasto Insurgente, Toledo, Tanzania y Mombaza, cosechados a tres frecuencias de corte (FC; 4, 5 y 6 semanas), durante las épocas de nortes, sequía y lluvias. Se utilizó un diseño de bloques completos al zar, con cuatro repeticiones y arreglo de tratamientos en parcelas divididas, donde la parcela mayor fueron los cultivares y la menor las frecuencias de corte. Los cultivares se sembraron a distancia de 50 x 50 cm entre plantas y surcos, respectivamente. El tamaño de parcelas fue de 10 m2. El área de muestreo fueron los dos surcos centrales, los cuales se dividieron en 3... |
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Palavras-chave: Pastos tropicales; Defoliación; Acumulación de forraje; Ahijamiento; Tropical grasses; Defoliation; Herbage accumulation; Tillering; Ganadería; Doctorado. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2349 |
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| Bonfim-Silva,Edna M.; Valadão Júnior,Daniel D.; Reis,Rafael H. P. dos; Campos,Jader J.; Scaramuzza,Walcylene L. M. P.. |
| In Cerrado soils under grazing, changes occur in physical attributes, such as increased density, decreasing on the size of water stable aggregates, and macroporosity reduction. Thus, the aim of this study was to study the effect of compaction on the establishment of two forages. It was adopted a completely randomized design with three replications, in 2 x 4 factorial design, and two forages (Xaraés grass and Marandu grass), and four levels of compaction (soil densities of 1.0, 1.2, 1.4, and 1.6 Mg m-3). The following variables were evaluated 48 days after sowing: tiller population, plant height, dry matter production of shoots and components, leaf and stem, as well as the root dry mass. The stem dry mass decreased with soil density in a similar manner for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Soil density; Forage; Tillering. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000400012 |
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| Xu,Kaijie; Sun,Fengli; Wang,Yongfeng; Shi,Lili; Liu,Shudong; Xi,Yajun. |
| Abstract Switchgrass (Panicum virgatum L.; family Poaceae) is a warm-season C4 perennial grass. Tillering plays an important role in determining the morphology of aboveground parts and the final biomass yield of switchgrass. Auxin distribution in plants can affect a variety of important growth and developmental processes, including the regulation of shoot and root branching, plant resistance and biological yield. Auxin transport and gradients in plants are mediated by influx and efflux carriers. PvPIN1, a switchgrass PIN1-like gene that is involved in regulating polar transport, is a putative auxin efflux carrier. Neighbor-joining analysis using sequences deposited in NCBI databases showed that the PvPIN1gene belongs to the PIN1 family and is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auxin transporter; PvPIN1 gene; TIBA treatment; Tillering; Switchgrass. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000100062 |
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| Fraga,Thiago Isquierdo; Carmona,Felipe de Campos; Anghinoni,Ibanor; Marcolin,Elio. |
| In the State of Rio Grande do Sul, Brazil, flooded rice fields using Patos Lagoon as the source of water for irrigation are subject to be damaged by salinity, since this source is bound to the sea on its southern end. The sensitivity of rice is variable during plant development, being higher in the seedling and reproductive periods. However, there is not enough information about the behavior of plants under salt stress during the course of its development, especially in the vegetative stage. This study evaluated the effect of different levels of salinity of irrigation water on the salinity of soil solution over time and on some plant attributes, during the vegetative stage of rice. The study was conducted in a greenhouse, where seeds of the variety IRGA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrical conductivity; Tillering; Vegetative growth; Oryza sativa L. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400005 |
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| Costa,Newton de Lucena; Moraes,Anibal de; Monteiro,Alda Lúcia Gomes; Motta,Antonio Carlos Vargas; Oliveira,Ricardo Augusto de; Rodrigues,Antonio Neri Azevedo. |
| The effect of nitrogen (N) fertilization (0, 50, 100 and 200 kg N ha-1) on forage yield and morphogenesis of Axonopus aureus was evaluated in the savannas of Roraima State, Brazil. The experimental design was in randomized blocks with three replicates. The grass showed high responsiveness to N fertilization. Dry weight (DW) yield, morphogenetic and structural traits and forage quality were positively affected by N fertilization. The effects of N fertilization on DW yield, N content, leaf appearance rate, leaf elongation rate, number of live leaves/tiller, final leaf length and leaf area index were quadratic and maximum values were estimated with application of 168.8 (2,181 kg ha-1); 124.8 (21.1 g/kg); 158.5 (0.163 leaf/day per tiller); 172.3 (2.75... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dry weight; Leaf; Senescence; Tillering. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800002 |
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| Araujo,Leandro Coelho de; Santos,Patrícia Menezes; Mendonça,Fernando Campos; Mourão,Gerson Barreto. |
| The objective of this work was to evaluate yield traits and development of palisadegrass under the influence of water deficit during the establishment period. The experiment was carried out in a greenhouse, in a completely random block statistical design in a factorial arrangement and additional treatment (3 × 3 + 1). The treatments referred to the suppression of irrigation at different phases of the establishment (sowing, germination and initial tillerring) until the soil presented water content of 75%, 50%, and 25% of the moisture related to field capacity (qFC), besides control treatment with no water restriction. Evaluations of number of grown tillers per vase, green leaves per tiller and plant height were carried out weekly, for five weeks after the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass; Drought; Palisadegrass; Tillering; Water deficit. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700002 |
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| Sousa,Braulio Maia de Lana; Vilela,Hélio Henrique; Santos,Manoel Eduardo Rozalino; Rodrigues,Carlindo Santos; Santos,Andreza Luzia; Nascimento Júnior,Domicio do; Assis,Camila Zimmer de; Rocha,Gabriel de Oliveira. |
| This experiment was conducted to estimate the effects of nitrogen fertilization associated with the initial height of the Piata palisade grass on the number and structural characteristics of individual tillers after the deferment period. An area with Brachiaria brizantha cv. Piata measuring approximately 288 m² was used. Combinations of levels of nitrogen fertilization (0, 75 and 150 kg/ha of nitrogen) and initial heights of the sward (low - 20 cm, medium - 30 cm and high - 40 cm) were evaluated. The experimental design was of completely randomized blocks in subdivided plots with three replications. The number of vegetative tillers, the stem length of the vegetative, reproductive and dead tillers, and the number of dead leaves of the reproductive and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Seasonal production; Tillering; Tiller population density. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700009 |
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| Paciullo,Domingos Sávio Campos; Fernandes,Priscila Beligoli; Gomide,Carlos Augusto de Miranda; Castro,Carlos Renato Tavares de; Sobrinho,Fausto de Souza; Carvalho,Carlos Augusto Brandão de. |
| It was studied the effects of shading (0, 36 and 54%) and of four nitrogen doses (0, 50, 100 and 150 mg N/dm³ of soil) on the morphogenetic traits and on the tillering of grasses of Brachiaria genus (B. decumbens, B. ruziziensis and B. brizantha cv. Marandu and cv. Xaraes), cultivated in pots with 5 kg substrate. It was used a complete random design, in a 3 × 4 × 4 factorial scheme with three replications. Nitrogen promoted increase in leaf appearance rate and in average leaf blade length, whereas shading increased stem elongation rate. Leaf elongation rate and tillering varied with the interaction among shading percentages and nitrogen doses. Shading increased response efficiency of leaf elongation rate to nitrogen doses, but reduced for tillering,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Brachiaria decumbens; Brachiaria ruziziensis; Morphogenesis; Silvopastoral system; Tillering. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200006 |
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| Faria,Bruna Moscat; Morenz,Mirton José Frota; Paciullo,Domingos Sávio Campos; Lopes,Fernando César Ferraz; Gomide,Carlos Augusto de Miranda. |
| ABSTRACT This study aimed to evaluate the productive and qualitative characteristics of Brachiaria decumbens and Brachiaria ruziziensis subjected to three levels of artificial shading (0, 36 and 54%) and four nitrogen (N) doses (0; 50; 100 and 150 mg dm-3 soil), using completely randomized design with a factorial scheme 2 x 3 x 4, with three replications. The dry matter production (DMP), the number of tillers per pot, root weight and crude protein (CP) and neutral detergent fiber (NDF) contents were evaluated. Both grasses responded quadractly to N, but B. ruziziensis presented greater production under the two highest N doses. The tillers density increased with N dose and was reduced under shading. The root weight increased with N dose, linearly in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crude protein; Fibrous fraction; Silvopastoral systems; Tillering; Tropical grasses; Urochloa. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300529 |
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| Registros recuperados: 23 | |
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