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| Registros recuperados: 14 | |
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| Correia, Núbia Maria; Universidade Estadual Paulista “Julio de Mesquita Filho”; Gomes, Leonardo José Petean; Universidade Estadual Paulista “Julio de Mesquita Filho”; Perussi, Fábio José; Universidade Estadual Paulista “Julio de Mesquita Filho”. |
| Mechanical sugarcane harvest without burning and continuous straw on the soil surface may affect the Rottboellia exaltata infestation dynamics in sugarcane fields. Three greenhouse experiments were conducted with the aim of studying the effects of sowing depth (0, 2.5, 5, 7.5, and 10 cm), amount of sugarcane straw on the soil surface (0, 5, 10, and 15 ton ha-1), and residual herbicide (clomazone, flumioxazin, imazapyr, isoxaflutole, and s-metolachlor) on the emergence of Rottboellia exaltata. For each experiment, a completely randomized design with four replicates was applied. The combination of mulch on soil surface (especially with larger amounts of straw) with deeper sowing depths provides less emergence and mass accumulation of R. exaltata. In bare... |
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Palavras-chave: 5.01.00.00-9 5.01.03.07-5 itchgrass; Mulch; Herbicide retention; Weed dynamics Matologia itchgrass; Mulch; Herbicide retention; Weed dynamics. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16086 |
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| Andrade,Emilene; Miyazawa,Mário; Pavan,Marcos A.; Oliveira,Edson L. de. |
| The objective of this study was to re-evaluate some aspects of the relative importance of organic matter on Mn solubility in acid soil conditions. Field study showed that black oats, oil seed radish, elephant grass, lupin, leucaena, and coffee leaves serving as mulch decreased Mn solubility as compared with bare soil. The decrease in Mn solubility with plant mulch was related to increase in soil moisture content. Laboratory study showed that increasing temperature from 25 to 100ºC increased Mn solubility and total soil organic carbon was little changed; from 150 to 200ºC increased both Mn solubility and organic carbon oxidation, and up to 300ºC decreased Mn solubility and stoped organic carbon oxidation . Aluminum solubility always increased with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant residue; Mulch; Organic carbon; Heavy metal; Micronutrient. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100003 |
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| Ormeño-Núñez,Juan; Pino-Rojas,Gerardo ; Garfe-Vergara,Farouk. |
| Two field trials (Los Andes 1998-1999 and Santiago 2004-2005) were carried out to determine growth inhibition of yellow nutsedge (Cyperus esculentus L.) and bermudagrass (Cynodon dactylon (L.) Pers.), growing on the plantation row, by mulch derived from a rye (Secale cereale L.) cover crop established between grapevine (Vitis vinifera L.) rows on overhead (cv. Flame Seedless) and vertical (cv. Cabernet Sauvignon) training. Spring mowing of the rye sown in the fall allowed for developing a thick and long lasting mulch along the grape rows. Nutsedge and bermudagrass control was 81 and 82%, respectively, and was more effective than conventional chemical (in the row) + mechanical (between rows) control. Glyphosate at 2% for nutsedge and 1% for bermudagrass... |
| Tipo: Journal article |
Palavras-chave: Mulch; Cover crop; Rye; Grapevines. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300003 |
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| Santos,Silvio da S; Espíndola,José Antonio A; Guerra,José Guilherme M; Leal,Marco Antonio de A; Ribeiro,Raul de LD. |
| A cebola é uma hortaliça consumida em grande quantidade e tem sua produção concentrada no âmbito da agricultura familiar, sendo responsável pela geração de emprego e renda para grande número de produtores rurais que tem no cultivo desta espécie sua única fonte de renda. É crescente a demanda por tecnologias para produção de cebola adequadas à agricultura familiar, com ênfase em técnicas agroecológicas. Neste aspecto, destaca-se a utilização de coberturas mortas e adubos orgânicos. O objetivo deste trabalho foi avaliar o efeito de diferentes coberturas mortas, associados a doses crescentes de torta de mamona aplicadas em cobertura, na produção total e no diâmetro dos bulbos de cebola produzidos em sistema orgânico. Observou-se efeito significativo da... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Mulch; Adubação orgânica. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000300032 |
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| Puiatti,Mário; Pereira,Francisco H.F.; Aquino,Leonardo Angelo. |
| Foram conduzidos dois experimentos consecutivos, numa mesma área, em Viçosa (MG), de 19/11/1997 a 08/08/1998 (experimento I) e de 01/09/1998 a 06/06/1999 (experimento II), com o taro 'Chinês' (BGH 5928). Utilizou-se o delineamento experimental de blocos ao acaso, em esquema fatorial 4 x 7 (tipos de mudas x camadas de bagaço de cana-de-açúcar), com três repetições. No experimento I avaliaram-se os efeitos de quatro tipos de mudas (rizoma-mãe e rizomas filhos grande, médio e pequeno, com 80; 55; 35 e 20 g de massa fresca média, respectivamente) e sete espessuras de camadas de bagaço em cobertura (0; 4; 8; 12; 16; 20 e 24 cm). No experimento II avaliou-se o efeito residual das camadas de bagaço utilizadas no experimento I, mantendo-se os mesmos tipos de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colocasia esculenta; Inhame; Cobertura morta; Mulch; Propagação vegetativa. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362004000400011 |
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| POLTRONIERI, L. S.; SILVA, J. F. de A. F. da; TRINDADE, D. R.; OLIVEIRA, A. F. F. de. |
| Mediante um experimento conduzido no Campo Experimental de Tracuateua, PA, estudou-se a eficiência de fungicidas no tratamento de sementes de caupi em associação com cobertura morta.Os fungicidas foram benomyl, pencycuron, pcnb, thiran e captan. O material utilizado como cobertura morta foi obtido cultivando-se arroz, quatro meses antes do plantio do caupi. Por ocasião da colheita, retiraram-se apenas as panlculas, permanecendo as plantas no campo. Dez dias antes do plantio do caupi fez-se a roçagem na palhada, próxima ao solo. Os resultados mostraram que o tratamento químico em semente de.boa qualidade, germinação acima de 85% e baixo Índice de patógenos, não exerceu qualquer efeito e que o plantio direto em cobertura morta cóm palha de arroz é uma... |
| Tipo: Folhetos |
Palavras-chave: Caupi; Controle; Cowpea; Mulch; Disease; Control; Seed; Cobertura Morta; Fungo; Doença; Semente; Fungi. |
| Ano: 1994 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/378528 |
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| 秋本, 正博; 市川, 直子; AKIMOTO, Masahiro; ICHIKAWA, Naoko. |
| シソ科の塊茎作物であるチョロギ（Stachys sieboldii）の十勝地方における栽培適性を評価した。帯広畜産大学の実験圃場に 4つの試験区を作り、それぞれを本州における慣行栽培に従う「対照区」、土壌をビニルマルチで被覆する「ビニルマルチ区」、そしてリビングマルチとしてオオムギ、あるいはヘアリーベッチを混作する「オオムギ区」と「ベッチ区」とした。2012年5月31日に、チョロギの苗をそれぞれの区に移植し栽培を開始した。そして収穫後の11月に稔った塊茎の収量を試験区間で比較した。チョロギでは使用認可を得た除草剤がないため、栽培期間中の雑草との競合が問題となった。対照区とオオムギ区、ベッチ区では、栽培開始後まもなく雑草との競合が起こり、生育盛期には株が雑草で覆い尽くされてしまった。5月末からのチョロギ栽培では、リビングマルチによる雑草防除効果が期待できないことがわかる。一方、ビニルマルチ区では効果的に雑草が防除され、チョロギ株が旺盛に生育した。対照区の塊茎収量は、459.2±131.8g/㎡であった。本州における平均塊茎収量が300〜600g/㎡であることから、慣行栽培を模倣することで十勝地方においても本州並みの収量が期待できることが示された。これに対し、オオムギ区とベッチ区では塊茎収量がいずれも対照区より低かった。一方、ビニルマルチ区では、塊茎収量が1175.1±317.0g/㎡と対照区に比べ明らかに高い値となった。ビニルマルチによる雑草防除効果と地温維持効果によって収量が改善されたと考えられる。本試験から、十勝地方においてもチョロギの栽培が可能であり、多収化にはビニルマルチの利用が効果的であることが明らかとなった。 |
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Palavras-chave: チョロギ; カバークロップ; マルチ; 塊茎収量; Chinese artichoke; Cover crop; Mulch; Tuber yield. |
| Ano: 2014 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3996 |
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| ABOUZIENA,H.F.; HAGGAG,W.M.. |
| ABSTRACT Weed control is consider the major obstacle for the growers in the organic farming. Lower plant productivity in organic farming mainly related to the poor weed control. It is widely known, in most cases, that losses caused by weeds exceeded the losses from any category of agricultural pests. Under water-stress condition, weeds can reduce crop yields more than 50% through moisture competition alone. In the light of the environmental and toxicological problems created by herbicides, it has become necessary to develop the safety methods for controlling weeds. Soil Solarization, Mulching, Biodegradable Mulch, Natural Herbicides, Hot Water, and Agronomic Practices have been successfully adopted in many countries as safe methods for controlling weeds in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weeds; Safety methods; Mulch; Soil solarization; Natural herbicides; Hot water; Non-traditional methods. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000200377 |
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| SILVA JR,A.C.; QUEIROZ,J.R.G.; MARTINS,C.C.; PEREIRA,M.R.R.; MARTINS,D.. |
| ABSTRACT The objective of this study was to evaluate the effects of soil cover with sugarcane residue on weed emergence of four weeds from the genus Brachiaria. The study was conducted in an area whose soil was classified as Red Nitosol. Seven different amounts of sugarcane residue (0, 3, 6, 9, 12, 15 and 18 ton ha-1) were used as soil cover. The residue of variety SP832847 was used upon four weed species: Brachiaria decumbens, B. brizantha, B. ruziziensis, and, B. humidicola. The experimental design was a randomized block with four replications. The weeds were sown 1 cm deep and covered by the residue. The seeding rate in use was 1,200 plants m-2. The study was comprised of two phases: the first phase was an evaluation of plant emergence (more than 1 cm... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Brachiaria decumbens; Brachiaria humidicola; Brachiaria ruziziensis; No-burn sugarcane; Mulch. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300423 |
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| Medeiros,Francisco A. S. B. de; Medeiros,José F. de; Silva,Marcelo C. de C.; Alves,Leonardo P.; Souza,Tonny H.de; Levien,Sérgio L. A.. |
| A necessidade hídrica das culturas pode ser estimada a partir da evapotranspiração de referência (ETo) e do coeficiente de cultura (kc). Com o objetivo de se estimar a necessidade hídrica de duas cultivares de melão (Gold mine e Trusty) cultivadas com e sem cobertura do solo com filme de polietileno e irrigadas por gotejamento com água de diferentes salinidades (1,2, 2,5 e 4,4 dS m-1) instalou-se um experimento no município de Mossoró, RN, em um Argissolo Vermelho Amarelo. Para se obter a necessidade hídrica da cultura, realizou-se o balanço hídrico nas parcelas, obtendo-se os coeficientes de cultura. Para medir a variação de armazenamento de água no perfil do solo e o fluxo subterrâneo, foram instaladas baterias com três tensiômetros em cada parcela de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Umidade do solo; Coeficiente de cultura; Mulch. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662005000200014 |
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| Freitas,Rômulo M. O. de; Dombroski,Jeferson L. D.; Freitas,Francisco C. L. de; Nogueira,Narjara W.; Leite,Tiago S.; Praxedes,Sidney C.. |
| ABSTRACT The resilience of crops to drought depends heavily on the cultural practices adopted, which can have a direct effect on water use efficiency. The aim of this study was to assess the influence of irrigation intervals on the growth, water consumption and water use efficiency of cowpea crops (cv. BRS Guariba) under conventional and no-tillage systems. The experiment was carried out in the semi-arid region of Rio Grande do Norte, Brazil, using a split-plot in a randomised complete block design, with four replications. Treatments consisted of two cultivation systems in the whole plots (conventional and no-tillage) and six irrigation intervals in the subplots (2, 6, 10, 14, 18 and 22 days) which were applied at full bloom. The biomass of the different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; No-tillage; Mulch; Water deficit. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400271 |
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| Coelho,Maria Eliani Holanda; Freitas,Francisco Cláudio Lopes de; Cunha,Jorge Luiz Xavier Lins; Medeiros,José Francismar de; Silva,Márcio Gledson Oliveira da. |
| This study aimed to evaluate the effect of no-tillage and conventional planting systems, and of weed-management strategies on water-usage efficiency in capsicum crops. The experiment was carried out at the Universidade Federal Rural do Semi-Árido in Mossoró, Rio Grande do Norte, using a split-plot layout in a randomized block design with four replications. The tillage systems were evaluated in the plots, and three weed-management strategies evaluated in the subplots (soil cover with polyethylene film, and with and without weeds). The density and dry mass of the weeds, the commercial and total productivity, and the daily water consumption were all evaluated. It was found that the no-tillage system reduced the density and dry mass of the weeds in comparison... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chili; Plant and water; Mulch; Weed control. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400010 |
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| Registros recuperados: 14 | |
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