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| Registros recuperados: 25 | |
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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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| 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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| 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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| ANDRADE, C. M. S. de; GARCIA, R.; VALENTIM, J. F.; PEREIRA, O. G.. |
| This study was carried out to evaluate the productivity, utilization and sward structure of a mixed massaigrass (Panicum maximum x P. infestum, cv. Massai) and forage peanut (Arachis pintoi Ac 01) pasture, intermittently stocked at three daily herbage allowance levels (9.0, 14.5 and 18.4% of live weight). In each grazing cycle, dry matter (DM) accumulation rates, defoliation intensity (%), grazing depth (%) and grazed horizon (cm) were evaluated. The structure of massaigrass tussocks was characterized in both dry and rainy seasons by measuring its pre-grazing morphological composition and postgrazing height and density (tussocks/m). Pastures submitted to higher herbage allowance (HA) levels showed higher productivity, but were less efficiently utilized. On... |
| Tipo: Artigo de periódico |
Palavras-chave: Capim massai; Panicum maximum x P infestum cv Massai; Mixed massaigrass; Amendoim forrageiro; Forage peanut; Profundidade do pastejo; Grazing depht; Profundidad de pastoreo; Acumulación de materia seca; Defoliación; Pastoreo mixto.; Morfología de las plantas; Leguminosas forrajeras; Híbridos; Pastagem consorciada; Leguminosa forrageira; Híbrido; Morfologia vegetal; Matéria seca; Desfolha; Pastejo; Características Agronômicas.; Mixed grazing; Forage legumes; Hybrids; Agronomic traits; Plant morphology; Dry matter accumulation; Defoliation; Arachis pintoi.. |
| Ano: 2006 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/504051 |
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| PEREIRA, L. E. T.; PAIVA, A. J.; GUARDA, V. D. A.; PEREIRA, P. de M.; CAMINHA, F. O.; SILVA, S. C. da. |
| Nitrogen fertiliser accelerates plant growth and increases herbage utilisation efficiency in continuously stocked temperate grass swards, indicating greater herbage production and harvest efficiency. There is no similar evidence, however, for tropical pastures. In this study we evaluated the morphogenetic responses, the patterns of defoliation and the efficiency of herbage utilisation of continuously stocked marandu palisade grass (Brachiaria brizantha (Hochst. ex A. Rich.) Stapf. cv. Marandu) maintained at 30 cm by cattle and fertilised with nitrogen. Treatments corresponded to four measures of nitrogen application (0, 150, 300 and 450 kg ha?1), and were assigned to experimental units (1,200 m2 paddocks) according to a randomised complete block design,... |
| Tipo: Artigo de periódico |
Palavras-chave: Brachiaria brizantha; Fertilizante nitrogenado; Manejo; Forragem; Grazing management; Defoliation; Forage. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1012912 |
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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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| 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: Circular Técnica (INFOTECA-E) |
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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| 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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| Registros recuperados: 25 | |
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