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| Registros recuperados: 20 | |
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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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| Lima,Dayane Cristina; Abreu,Ângela de Fátima Barbosa; Ferreira,Ricardo Augusto Diniz Cabral; Ramalho,Magno Antonio Patto. |
| A common bean (Phaseolus vulgarisL.) cultivar must combine desirable genotypes for several traits in order to be accepted by producers and consumers. This study aimed to evaluate selection efficiency when segregating bean populations for traits, by means of a selection index, in order to obtain superior progenies for traits considered. A total of 16 populations from the F4 and F5generations were evaluated in 2011 and 2012, respectively. The traits evaluated were plant architecture, plant disease, grain type and yield. Using standard scores (Z), the sum of the four traits (∑Z) was obtained and, based on this information, the best populations were identified. The evaluation of selection effectiveness was performed on 31 progenies from each population. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant architecture; Plant disease; Grain yield. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000200132 |
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| BETTONI,JEAN CARLOS; COSTA,MURILO DALLA; GARDIN,JOÃO PETERSON PEREIRA; KRETZSCHMAR,AIKE ANNELIESE; PATHIRANA,RANJITH. |
| ABSTRACT Through in vitro tissue culture techniques it is possible to propagate high quality nursery plants faster. Cryotherapy is a promising tool, based on in vitro culture techniques, for achieving in a short time, high frequency of regenerating plants free of viruses. The objective of this review is to present and analyze the results of research conducted in cryotherapy methods based on cryopreservation protocols for recovery of cultivars free of micro-organisms with potential agronomic interest. The main methods employed in cryotherapy are encapsulation-dehydration, vitrification, encapsulation-vitrification and droplet vitrification, which are based on the immersion of preconditioned shoot tips in liquid nitrogen, followed by their recovery in vitro... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis encapsulation-dehydration encapsulation-vitrification vitrification droplet-vitrification; Plant disease. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000200404 |
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| FERNANDEZ, M. R.. |
| Objetivos da fitopatologia. Manutenção básica do laboratório. Segurança no laboratório. Esterilização - exigência básica para o trabalho com microorganismos. Estabelecimento de condições assépticas. Métodos de esterilização. Tipos de meios de cultura. Preparo de meios de cultura. Preparo de culturas de fungos e de bactérias. Condições para crescimento de patógenos. Fungos. Bactérias. Incubadoras. Isolamento de fungos e de bactérias de tecido vegetal infectado. Aspectos gerais. Métodos de isolamento. Isolamento de patógenos do solo. Descontaminação de culturas. Aspectos gerais. Métodos mecânicos. Métodos químicos. Ácaros. Isolamento monospórico. Postulados de Koch ou regras de prova da patogenicidade. Técnicas para a inoculação de plantas. Preparo do... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Diagnosis; Plant disease; Técnica de laboratório.. |
| Ano: 1993 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/815639 |
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| Santos,Eduardo Alvarez; Sentelhas,Paulo Cesar; Pezzopane,José Eduardo Macedo; Angelocci,Luiz Roberto; Monteiro,José Eduardo Boffino Almeida. |
| Despite the importance of leaf wetness duration for plant disease epidemiology, there has been little attention paid to research on how its variability relates to different cropping situations. The objective of this study was to evaluate the spatial variability of leaf wetness duration (LWD) in three crops, comparing these measurements with turfgrass LWD, obtained in a standard weather station. LWD was measured by electronic sensors in three crops with different canopy structures and leaf area: cotton, coffee and banana. For the cotton crop, cylindrical sensors were deployed at the lower third and on the top of the canopy, facing southwest. For the coffee crop, flat plate sensors were installed in the lower third of the canopy facing northeast and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dew; Microclimate; Plant disease; Warning systems. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700005 |
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| SEVIK,MEHMET A.. |
| Abstract:Virus diseases of cool season vegetable crops (mainly cabbage, white and red head cabbage, broccoli, kale, radish, rocket salad, garden cress, and turnip) were surveyed in Bafra Plain, Turkey during winter 2017, and 2018. Leaf samples were collected from different species of the Brassicaceae family showing mosaic, mottling, necrotic spots, malformation, and chlorosis symptoms. These samples were tested for the presence of Cauliflower mosaic virus (CaMV), Cucumber mosaic virus (CMV), Beet western yellows virus (BWYV), Radish mosaic virus (RaMV), Turnip mosaic virus (TuMV), Turnip yellow mosaic virus (TYMV), and Turnip yellows virus (TuYV) by biological and serological methods. A total of 455 samples were collected from cole crop fields and tested... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassicaceae family; Cole crop; Plant disease; Occurrence; Virus. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500853 |
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| Registros recuperados: 20 | |
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