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| Registros recuperados: 18 | |
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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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| 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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| Oros Ortega, Iván. |
| En plántulas de C. odorata cultivadas en vivero se evaluó el efecto de seis tratamientos (TS) en la tasa de crecimiento en altura (TCA), diámetro (TCD) y tasa de crecimiento relativo (TCR), peso fresco y seco de las plántulas. Se utilizó un diseño completamente al azar con un arreglo factorial (2 x 3), los TS consistieron de una combinación de los factores: porcentaje de defoliación (0, 50 y 90) e inoculación con Glomus intraradices (con y sin inoculación). Además, se diagnosticó el estado actual de plantaciones de cedro en la zona de influencia del Campus Veracruz a través de una apreciación rural rápida. A los seis meses del experimento plantas de TS con inoculación, independientemente del nivel de defoliación, presentaron mayor TCD (F= 100.45,... |
| Tipo: Tesis |
Palavras-chave: Cedrela odorata; Micorriza arbuscular; Glomus intraradices; Defoliación; Maestría; Agroecosistemas Tropicales; Arbuscular mycorrhiza; Defoliation. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1590 |
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| Dantas,Geffson de F.; Faria,Rogério T. de; Costa,Natã R.; Santos,Gilmar O.; Ferraudo,Antonio S.. |
| ABSTRACT The response of biomass flow components of forage from the interaction between fertigation with wastewater and cutting height during the year is little known. The objective of this work was to verify the responses of morphogenic and structural characteristics of Urochloa brizantha as a function of fertigation application strategies with sewage treatment plant effluent (TSE), complemented with urea (U), associated with harvest with two plant heights during the dry and rainy periods. The forage cutting heights were 30 cm (H1) and 40 cm (H2), and nitrogen fertilization doses were 9.1 (D1), 12.1 (D2), 22.5 (D3), 26.6 (D4), and 34.0 (D5) kg of N per Mg−1 of dry matter (DM) produced, applied by TSE via fertigation, plus 7.5 kg N per Mg−1 of DM produced,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Defoliation; Nitrogen; Water reuse. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000600692 |
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| Silva,Laércio J da; Milagres,Carla do C; Silva,Derly José H da; Nick,Carlos; Castro,João Paulo A de. |
| The incidence of leaf diseases is one of the main factors limiting the tomato crop production, increasing the production cost due to excessive pesticide application. The basal leaf removal could reduce inoculum sources, disease severity and contribute to reducing the use of pesticide. Aiming to evaluate the efficiency of this practice on the reduction of tomato leaf diseases and the effect in the quality and in the productivity of the tomato plants for in natura consumption, two experiments were carried out to test four levels of basal leaf removal. Basal leaves removal, at fruit harvesting, is efficient in reducing the infected plant area by disease, what can mean smaller disease severity and least inoculum source in the field. Also, the all basal leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Defoliation; Plant disease; Cultural management. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000300020 |
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| BUENO, A. de F.; BATISTELA, M. J.; MOSCARDI, F.; BUENO, R. C. O. de F.; NISHIKAWA, M.; HIDALGO, G.; SILVA, L.; GARCIA, A.; CORBO, E.; SILVA, R. B.. |
| Nível de ação e o MIP-Soja. Ensaios com injúria na fase inicial da lavoura: Londrina, PR ? Safras 2001/2002 e 2002/2003. Ensaios com diferentes níveis de desfolha em diferentes fases do desenvolvimento: Não-Me-Toque-RS e Sorriso-MT ? Safra 2008/2009. Ensaios com diferentes níveis de desfolha contínua durante diferentes fases do desenvolvimento: Morrinhos, GO ? Safra 2009/2010. Resultados obtidos que comprovam a segurança dos níveis de ação recomendados. Considerações finais. |
| Tipo: Folhetos |
Palavras-chave: Soja; Desfolha; Soybeans; Defoliation. |
| Ano: 2010 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/859415 |
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| Siliquini,OA; Orioli,GA; Lobartini,JC. |
| Onion (Allium cepa) is an important horticulture crop because of its value as a food with a long shelf life being a relatively non-perishable product. It is very helpful to understand the growth response of the seeded onion crop to conduct appropriate field practices in attaining the highest or optimum yields. A three year field experiment was conducted using a variety of onion Valcatorce INTA, in a randomized block design with five replicates. Treatments were two plant densities and three rates of N application. The bulb growth followed a classical sigmoid curve. During the rapid growing period, the crop had the greatest leaf area (LA) with at least six leaves per plant. Increasing plant density increased yield in kg/ha, but decreased bulb size.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Defoliation; Bulb production; Onion fertilization. |
| Ano: 2015 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000200011 |
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| COSTA,THIAGO VIEIRA DA; FAÇANHA,RAFAELA VIEIRA; SCARPARE FILHO,JOÃO ALEXIO. |
| ABSTRACT In climate region Cwa of the State of São Paulo the technique of double cropping the grapevine is possible, however, when it is time for the second pruning of the crop, most of the vine’s leaves are still in the plant, posing the problem that the use of ethephon as a defoliant could increase leaf senescence and improve the vine management. The objective of this study was to evaluate the effects of ethephon spray as a defoliant in the development and production of the ‘Niagara Rosada’ vine when subjected to double cropping, and the influence this bioactivator may have on carbohydrate reserves in the branch. The experiments were conducted in a commercial, non-irrigated area in agricultural years of 2011/2012 and 2012/2013. The length, diameter and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis labrusca L.; Pruning; Defoliation; Carbohydrate reserves. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000200201 |
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| Almeida,Milton Luiz de; Sangoi,Luís; Merotto Jr.,Aldo; Alves,Antônio Carlos; Nava,Itamar Cristiano; Knopp,Armando Cristiano. |
| Tillers are important structures for wheat (Triticum aestivum L.) because they contribute to increase the number of spikes per area, enhancing grain yield. Stresses during plants early growth have a sizable effect on tiller production. Three experiments were conducted to evaluate the effects of stresses induced by unevenness in sowing depth, defoliation and differences in soil pH on tiller emission and dry mass accumulation of wheat cultivars. The experiments were carried out in Lages, Southern Brazil, during the winter growing seasons of 2000 and 2001. They were performed in square boxes, under natural conditions of radiation and irrigation. In the first experiment, five types of sowing depths were tested to simulate different systems of unevenness in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Tillering; Sowing depth; Defoliation; Aluminum. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300004 |
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| Registros recuperados: 18 | |
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