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This study was carried out with the objective of evaluating the effect of fungicide application on grain rot in commercial maize hybrids and the relation between grain rot and the expression of lipoxygenase enzyme in grain in conventional row spacing of 0.70 m and reduced row spacing of 0.45 m. Treatments were made in a 3 x 8 factorial scheme, using three forms of management with fungicide (Trifloxystrobin + Prothioconazole) and eight maize hybrids divided into two groups (tolerant and susceptible) with three repetitions, totaling 72 plots in each environment (conventional and reduced spacing) in the 2013/2014 crop. The following characteristics were evaluated: grain rot percentage and lipoxygenase enzyme expression (LOX) in the grain. The hybrid and the... Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.01.03.01-6; LOX; Spindle rot; Chemical control; Reduced spacing; Zea mays Produção Vegetal. Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/33003 Effect of fungicides on black spot control in maté PFB - Pesquisa Florestal Brasileira Grigoletti Júnior, Albino; Auer, Celso Garcia. Black-spot is the main disease in maté (Ilex paraguariensis), causing serious damages and losses in nurseries and in the field. Frequently the chemical control is used, even so these products are not registered nor tested about its efficiency. The purpose of this study was to investigate and select some fungicides to control black-spot in maté. After In vitro and in vivo tests were performed in seedlings, “benomyl” and “captan” have presented the best efficiency when compared with others commercial products. Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical control; Cylindrocladium spathulatum; Ilex paraguariensis Controle químico; Cylindrocladium spathulatum. Ano: 2003 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1621 Effect of selectivity of herbicides and plant growth regulators used in sugarcane crops on immature stages of Trichogramma galloi (Hymenoptera: Trichogrammatidae) Planta Daninha Oliveira,H.N.; Antigo,M.R.; Carvalho,G.A.; Glaeser,D.F.. Herbicides and plant growth regulators are often used in sugarcane management. However, the use of non-selective pesticides can cause adverse effects on the efficiency of beneficial insects in integrated pest management. Within this context, this study aimed to evaluate the effect of such products on the immature stages of the parasitoid Trichogramma galloi. Eggs of Diatraea saccharalis containing the parasitoid at the egg-larva stage and at the prepupal and pupal stages were immersed in test solutions of the following pesticides (maximum recommended doses for sugarcane): herbicides clomazone and diuron + hexazinone, and plant growth regulators trinexapac-ethyl and sulfometuron-methyl. The biological properties evaluated were emergence (F1 and F2) and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum spp.; Egg parasitoid; Diatraea saccharalis; Biological control; Chemical control; Toxicity. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000100014 EFFECT OF SETHOXYDIM HERBICIDE IN THE LEAF ANATOMY AND PHYSIOLOGY OF BRACHIARIA GRASS UNDER WATER STRESS Planta Daninha PEREIRA,M.R.R.; MARTINS,A.R.; MARTINS,D.; SASSO,G.; SILVA JR,A.C.. ABSTRACT The goal of this study was to analyze the leaf anatomy and physiological behavior of Brachiaria grass plants (Urochloa decumbens) under different water conditions and with the application of sethoxydim herbicide. The used experimental design was the completely randomized one, with four replications, consisting of a 3 x 2 factorial scheme, with the combination of three water managements (-0.03, -0.07 and -1.5 MPa) with and without the application of sethoxydim herbicide + Assist mineral oil, at the recommended dose for the species (184 g a.i. ha-1). The assessed physiological and anatomicalal parameters were photosynthetic rate, stomatal conductance, transpiration, difference between leaf and room temperature, dry mass of plants, thickness of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical control; Effectiveness; Urochloa decumbens. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100237 Effect of spray volume on the moisture of stored corn and wheat grains BABT Vásquez-Castro,Javier Alberto; Baptista,Gilberto Casadei de; Gadanha Junior,Casimiro Dias; Trevizan,Luiz Roberto Pimentel. The goal of this work was to evaluate the effect of spray volume on the moisture of the stored grains of the corn and wheat. Two kg of each type of the grain were placed into the plastic bags and sprayed with the theoretical doses of 0, 1, 3, 5, 8, and 10 liters of water / ton of the grain. The grain moisture content was evaluated 24 h after the spray operation by the oven method. The increase in the grain moisture was quadratic and showed the same trend in both the corn and wheat. The grain moisture after spraying 10 L.t-1 showed little increase (0.8 %) as compared to the initial moisture content. Thus, the application of any spray volume as used in this study made no difference for a possible better uniformity in the distribution of insecticide... Tipo: Info:eu-repo/semantics/article Palavras-chave: Stored products; Chemical control; Application technology; Desorption; Hygroscopic equilibrium. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300003 Effect of water stress on herbicide efficiency applied to Urochloa decumbens Ciencia e Investigación Agraria Rocha-Pereira,Maria R; Klar,Antônio E; Martins,Dagoberto; Ferreira de Souza,Guilherme S; Villalba,Juana. This project aimed to measure the control efficiency of Acetil Coenzime A Carboxilase (ACCase)-inhibiting herbicides post-emergence applied to Urochloa decumbens (Stapf) R.D. Webster under different soil water contents. The experiment was conducted in a greenhouse at the Department of Plant Production, Faculty of Agronomic Sciences, UNESP, Botucatu, São Paulo. The experimental design was a completely randomized design with four replications, consisting of a 9 x 4 factorial, combined with three water management systems (-0.03, -0.07 and -1.5 MPa) and three herbicides (fluazifop-p-butyl, haloxyfop-methyl and sethoxydim + oil using four doses (100, 50, 25 and 0% of the recommended dose). Herbicide applications were conducted at two vegetative stages for all... Tipo: Journal article Palavras-chave: Chemical control; Graminicide; Water restriction; Weed. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100018 EFFECTIVENESS OF DIQUAT, BOTH ISOLATED AND ASSOCIATED WITH COPPER SOURCES IN CONTROLLING THE Hydrilla verticillata SUBMERGED MACROPHYTES AND ANKISTRODESMUS Gracilis microphyte Planta Daninha MALASPINA,I.C.; CRUZ,C; GARLICH,N; BIANCO,S; PITELLI,R.A. ABSTRACT The goal of this study was to evaluate the effectiveness of diquat, both isolated and associated with copper sources (oxychloride and hydroxide) in controling the H. verticillata submerged macrophyte and the A. gracilis microalgae. For this purpose, 10.0 cm H. verticillata young branches and 300 mL of A. gracilis culture were used. The experiments were performed in laboratory and the tested diquat concentrations were: 0.1; 0.2; 0.4; 0.8; 1.2; and 1.8 mg L-1, either isolated or added with 1.0% copper oxychlorideand hydroxide, as well as a control sample. On day 3, 7, 11, 21 and 30 after application, phytotoxicity signs were evaluated and on day 60 after application, green and dry biomass production and plant length were measured. To obtain dry... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical control; Water plant; Eutrophication; Phytotoxicity; Chlorophyll a. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100212 Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold Ciencia e Investigación Agraria Piqueras,Carlos M; Latorre,Bernardo A; Torres,René. Gray mold is an important disease in grapevines in Chile, and its control depends primarily on the use of fungicides with a single-site mode of action. Botrytis cinerea has a high risk of developing resistance against such fungicides. Therefore, novel chemical options are needed to achieve satisfactory control of gray mold. Isofetamid is a new succinate dehydrogenase inhibitor (SDHI) fungicide with a single-site of action that inhibits cellular respiration and appears to be a new option in the chemical treatment against gray mold. The aim of this study was to determine the effectiveness of isofetamid in controlling grapevine gray mold in Chile. Field trials undertaken in three different commercial vineyards showed that isofetamid controls gray mold to a... Tipo: Journal article Palavras-chave: Chemical control; Fenhexamid; Fungicides; Isofetamid; SDHI; Vitis vinifera. Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300009 Effects of irrigated rice sowing season and imazapyr + imazapic time of application on rice grain yield and red rice management Planta Daninha Sartori,G.M.S.; Marchesan,E.; Azevedo,C.F.; Filho,A.C.; Roso,R.; Coelho,L.L.; Oliveira,M.L.. Irrigated rice sowing season and red rice competition are among the main factors affecting grain yield. The objective of this work was to evaluate the sowing date of irrigated rice and moments of application of the herbicide imazapyr + imazapic to control red rice management and irrigated rice grain yield. Eight experiments were performed at the following dates (09/30, 10/19, 11/08 and 12/01) for the 2010/2011 harvest season and (09/27, 10/17, 11/08 and 12/05) for the 2011/2012 harvest season. The treatments were: application of the herbicide imazapyr + imazapic at doses of 105+35 g ha-1 in pre-emergence (PRE); 52.5+17.5 g ha‑1 in pre-emergence and 52.5+17.5 g ha-1 in post-emergence (PRE + POST); and 105+35 g ha-1 in post- emergence (POST), and a control... Tipo: Info:eu-repo/semantics/article Palavras-chave: Weed; Herbicide; Chemical control; Temperature; Solar radiation; Oryza sativa. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300015 Effects of pesticides used in soybean crops to the egg parasitoid Trichogramma pretiosum Ciência Rural Bueno,Adeney de Freitas; Bueno,Regiane Cristina Oliveira de Freitas; Parra,José Roberto Postali; Vieira,Simone Silva. This research aimed to study the effects of different insecticides, herbicides and fungicides on eggs, larvae and pupae of Trichogramma pretiosum. The results showed that studied pesticides had different impact on T. pretiosum. Esfenvalerate 7.5 and spinosad 24.0 grams ha-1 were classified as harmfull (class 4) while clorfluazuron 10.0, methoxyfenozide 19.2, lactofen 165.0, fomesafen 250.0, fluazifop 125.0, glyphosate 960.0 (Gliz® and Roundup Transorb®), azoxistrobin + ciproconazol 60.0 + 24.0, azoxistrobin 50.0 and myclobutanil 125.0 grams ha-1 were chemicals classified as harmless to all imature T. pretiosum stages. All the other chemicals evaluated had different impact on T. pretiosum being classified from harmless (class 1) to harmful (class 4) varying... Tipo: Info:eu-repo/semantics/article Palavras-chave: Selectivity; Biological control; Chemical control; Integrated pest management. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000600001 Efficacy of herbicides applied to Digitaria horizontalis plants under different water conditions Planta Daninha Pereira,M.R.R.; Martins,D.; Souza,G.S.F.; Rodrigues-Costa,A.C.P.; Klar,A.E. This project aimed to relate the control efficiency of ACCase inhibiting herbicides applied post-emergence to Digitaria horizontalis plants under different soil water contents. The experiments were conducted in a greenhouse, with the application of three different herbicides (fluazifop-p-butyl, haloxyfop-methyl, and sethoxydim + mineral oil Assist). The experimental design used for each herbicide was completely randomized, with four replications, consisting of a 3 x 4 factorial, with the combination of water management strategies (-0.03, -0.07 and -1.5 MPa) and four doses of these products (100%, 50%, 25%, and 0% of the recommended dose). Herbicide application was made at two vegetative stages, 4-6 leaves and 2-3 tillers. The visual phytotoxicity... Tipo: Info:eu-repo/semantics/article Palavras-chave: Crabgrass; Chemical control; Water restriction; Weed. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000100019 Eficiência comparativa de inseticidas no controle das pragas do arroz armazenado no Estado do Acre. Infoteca-e FAZOLIN, M.. No Brasil, as perdas de grãos durante o armazenamento têm atingido níveis médios de 20%. No Acre, devido as precárias condições de armazenamento e os fatores climáticos favoráveis ao desenvolvimento das pragas, os níveis de perdas são superiores a 30%. Os insetos têm sido os agentes responsáveis por essas perdas, causando prejuízos quantitativos determinados pela perda de peso e prejuízos qualitativos causados pela depreciação do produto devido a presença de ovos, larvas, pupas, adultos e alterações na composição química do produto, além de facilitar o desenvolvimento de micro-organismos. Nas condições locais, 35% do arroz armazenado é atacado pelo gorgulho (Sitophilus zeamais) e 65% pela traça (Sitotroga cereealella). No controle dessas pragas alguns... Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Maize weevil; Angoumois grain moth; Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Oriza sativa; Plagas de plantas; Control químico; Malatión; Plaguicidas.; Arroz; Praga de planta; Gorgulho dos cereais; Sitophilus zeamais; Traça dos cereais; Sitotroga cerealella; Controle químico; Inseticida; Campo Experimental.; Rice; Plant pests; Chemical control; Pesticides; Malathion.. Ano: 1986 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492345 Eficiência de fungicidas no controle da ferrugem asiática da soja (Folder). Infoteca-e ABUD, S.; SOUZA, P. I. M.; MOREIRA, C. T.; FARIAS NETO, A. L. de; DI STEFANO, J. G.; GODOY, C. V.; NUNES, J.; MONTEIRO, P. M. F. O.; PIMENTA, C. B.. bitstream/CPAC-2009/27686/1/p2006_25.pdf Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Fungal diseases.; Controle Químico; Doença Fúngica; Ferrugem; Fungicida; Fungo; Glycine Max; Soja.; Chemical control; Fungi; Soybeans.. Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570162 Eficiência de fungicidas no controle da sigatoka negra da bananeira. Infoteca-e PEREIRA, J. C. R.; GASPAROTTO, L.; COSTA, M. M. da; PEREIRA, M. C. N.. Recomendacao de uso alternado de fungicidas com modo de acao diferenciado, pertencentes a grupos quimicos diferentes, no controle da sigatoka negra em bananeiras no Estado do Amazonas (Brasil). Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Controlo quimico; Brasil; Amazonas; Manaus; Species; Fungal diseases; Fungicides application.; Banana; Espécie; Doença; Fungo; Fungicida; Folha; Mycosphaerella Fijiensis; Sigatoka Negra.; Musa; Chemical control; Leaves.. Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/669832 Eficiência de fungicidas no controle das principais doenças do trigo. Infoteca-e PICININI, E. C.; PRESTES, A. M.; LUZ, W. C. da. bitstream/item/119381/1/FOL-06041.pdf Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Disease; Efficiency; Fungicide; Fungus.; Controle Químico; Fungo; Triticum Aestivum.; Chemical control; Wheat.. Ano: 1983 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/849022 Eficiencia de fungicidas no controle de doencas foliares de seringais adultos e em formacao. Infoteca-e JUNQUEIRA, N. T. V.; PEREIRA, A. V.; PEREIRA, E. B. C.; RIVERA CARBAJAL, A. C.. Com a expansao de plantios de seringueira no Estado, novas doencas fungicas surgiram. Os varios patogenos atacam simultaneamente os foliolosjovens, danificando-os e/ou causando sua queda. Objetivando selecionaralguns fungicidas capazes de controlar eficientemente esse complexo dedoencas fungicas, realizaram-se ensaios, durante dois anos, em uma area de 8ha formada pelo clone IAN 717, com idade de oito anos. Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Brasil; Amazonas; Rubber tree; Species; Fungal diseases; Fungicides evaluation.; Controle Químico; Doença; Espécie; Fungo; Folha; Fungicida; Hevea; Seringueira.; Chemical control; Leaves.. Ano: 1987 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665258 Eficiência de fungicidas no controle de fungos em sementes de milho e seus efeitos na emergência de plântulas em casa de vegetação. Infoteca-e GOULART, A. C. P.; FIALHO, W. F. B.. bitstream/item/39446/1/B6-1998.pdf Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Doenca de plantas; Plant diseases.; Controle Químico; Emergência; Cerrado; Fungicida; Fungo; Milho; Plântula; Semente; Zea Mays.; Fungi; Fungicides; Chemical control; Seeds.. Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/241393 Eficiencia de fungicidas no controle do mal-das-folhas em viveiro de seringueira no Estado de Rondonia. Infoteca-e LIMA, M. I. P. M.; LISBOA, S. de M.; GASPAROTTO, L.; JUNQUEIRA, N. T. V.. Considerando-se a necessidade de avaliar a eficiencia dos fungicidas no controle do mal-das-folhas, testaram-se os fungicidas Tiofanato metilico, Triforine, Benomil, Mancozeb e as misturas de Trifenil acetato de estanho + Mancozeb e Clorotalonil + oxicloreto de cobre. Foram efetuadas pulverizacoes a intervalos semanais e quinzenais. A eficiencia dos produtos foi avaliada na expressao do desenvolvimento da planta, medindo-se o diametro do caule das plantas a 5cm do solo, na epoca da enxertia marrom. Analisando-se esses dados, verificou-se que todos os fungicidas nas concentracoes testadas foram eficientes no controle do mal-das-folhas quando aplicados a intervalos semanais. Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Mal-das-folhas; Brasil; Rondonia; Rubber tree; Nursery; Fungal diseases; South American leaf blight; SALB; Fungicides evaluation.; Controle Químico; Doença; Folha; Fungicida; Hevea Brasiliensis; Seringueira; Viveiro.; Chemical control; Leaves.. Ano: 1989 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665282 Eficiência de fungicidas para o controle da brusone do trigo: resultados dos ensaios cooperativos - safra 2013. Infoteca-e SANTANA, F. M.; LAU, D.; SBALCHEIRO, C. C.; AGUILERA, J. G.; GOULART, A. C. P.; SUSSEL, A. A. B.; SCHIPANSKI, C. A.; COELHO, M. A. de O.; UTIAMADA, C. M.; MONTECELLI, T. D. N.; SEIXAS, C. D. S.; CUSTÓDIO, A. A. de P.. bitstream/item/146153/1/ID43729-2016CTO363.pdf Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Disease; Wheat blast.; Brusone; Controle Químico; Doença; Trigo.; Chemical control; Wheat.. Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1050384 Eficiência de herbicidas no controle de gramíneas em seringueira. Infoteca-e AZEVEDO, D. M. P. de; ROMAN, E. S.; LISBOA, S. de M.. Em Rondônia, capim-amargoso (Digitaria insularis (L.) Mez ex Ekman), capim-colchão (Digitaria horizontalis Willd.), capim-milhã (Digitaria ciliaris (Retz.) Koel), capim pé-de-galinha (Eleusine indica, (L.) Gaertn) e capim rabo-de-burro (Andropogon bicornis L.), são ervas daninhas muito freqüentes em cultivos de seringueira, o que justifica a realização de trabalhos específicos para seu controle. O objetivo deste trabalho foi avaliar e comparar nas condições de campo, a eficácia de três herbicidas pós-emergentes no controle de gramíneas importantes em cultivo de seringueira em Rondônia. Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Ruber tree; Ariquemes (RO); Ouro Preto do Oeste (RO); Rondônia; Amazônia Ocidental; Western Amazon.; Seringueira; Hevea Brasiliensis; Erva Daninha; Herbicida; Controle Químico; Pós-Emergência.; Chemical control; Herbicides; Postemergent weed control.. Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/708860 Registros recuperados: 243 Primeira ... 2 3 4 5 6 7 8 9 10 ... Última

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