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| Registros recuperados: 1.635 | |
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| Carvalho, Felipe Paolinelli de; Universidade Federal de Viçosa; França, André Cabral; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Souza, Bruna Pereira; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Fialho, Cíntia Teixeira; Universidade Federal de Viçosa; Santos, José Barbosa; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Silva, Antonio Alberto; Universidade Federal de Viçosa. |
| Many coffee growers apply glyphosate in directed applications, but some phytotoxicity has been noted. It is believed some herbicides can exert a direct or indirect negative effect on photosynthesis by reducing the metabolic rate in a way that can affect the water use efficiency. The objective of this study was to investigate the variables related to water use among coffee cultivars subjected to the application of glyphosate and the effects of each dose. The experiment was conducted in a greenhouse using three varieties of coffee (Coffea arabica), Acaiá (MG-6851), Catucaí Amarelo (2SL) and Topázio (MG-1190), and three doses of glyphosate (0.0, 115.2 and 460.8 g acid equivalent ha-1), in a factorial 3 x 3 design. At 15 days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.00-8 herbicide EPSPs; Coffea arabica; Water use efficiency; Transpiration Fitotecnia. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17830 |
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| Silva, Anita Cristina Costa da; Almeida, Willian Fernandes de; Lima, Luiz Antonio; Oliveira, Mayra Carolina de; Guimarães, Alexandre Lasmar. |
| The effects of pulse drip, drip line position and soil mulch on water use efficiency in yields of zucchini cv. Clarinda were evaluated. The experiment was conducted in the experimental area of the Engineering Department of the Federal University of Lavras, Lavras, Minas Gerais State, Brazil, for two years. For the first year of the experiment, the experimental design was a randomized block design with a 2 x 2 x 2 factorial design (continuous and pulse drip irrigation, surface and subsurface dripping, with and without plastic mulch), with four replications. For the second year of the experiment, the design was completely randomized in a 2 x 2 x 2 factorial design with eight treatments and five replications. In relation to the position of the drip line, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plastic mulch; Drip pulse irrigation; Subsurface drip; Irrigated horticulture.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42604 |
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| Silva, Anita Cristina Costa da; Almeida, Willian Fernandes de; Lima, Luiz Antonio; Oliveira, Mayra Carolina de; Guimarães, Alexandre Lasmar. |
| The effects of pulse drip, drip line position and soil mulch on water use efficiency in yields of zucchini cv. Clarinda were evaluated. The experiment was conducted in the experimental area of the Engineering Department of the Federal University of Lavras, Lavras, Minas Gerais State, Brazil, for two years. For the first year of the experiment, the experimental design was a randomized block design with a 2 x 2 x 2 factorial design (continuous and pulse drip irrigation, surface and subsurface dripping, with and without plastic mulch), with four replications. For the second year of the experiment, the design was completely randomized in a 2 x 2 x 2 factorial design with eight treatments and five replications. In relation to the position of the drip line, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plastic mulch; Drip pulse irrigation; Subsurface drip; Irrigated horticulture.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42604 |
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| Silva, João Renato Vaz; Universidade Estadual Paulista, Campus de Jaboticabal.; Alves, Pedro Luis da Costa Aguiar; Universidade Estadual Paulista, Campus de Jaboticabal.; Toledo, Roberto Estevão Bragion de; Universidade Estadual Paulista, Campus de Jaboticabal.. |
| Reforestation in Brazil is conventionally carried out with a 50-cm weed control strip, using mechanical or manual hoeing or herbicides. The aim of this study was to determine effects of varying the width of the herbicide-treated strip on the establishment of Eucalyptus grandis. Eucalyptus plants were transplanted in Araraquara and Altinópolis counties, São Paulo State, Brazil. In Araraquara, the following treatments were evaluated: 0, 25, 50, 75, 100 and 150-cm wide strips, treated with herbicide, on either side of the eucalyptus row; in Altinópolis, the width of the strip on either side of the eucalyptus row was 0, 25, 50, 75, 100, 125 or 150 cm. Were evaluated dry matter of leaves, branches and stem and leaf area at 270 days after planting (270 DAP),... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: 5.01.03.07-5 reforestation; Weed interference; Weed competition Fitossanidade. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/12252 |
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| Costa, Augusto Guerreiro Fontoura; Embrapa Algodão; Sofiatti, Valdinei; Embrapa Algodão; Maciel, Cleber Daniel de Góes; Universidade Estadual do Centro-Oeste; Poletine, Juliana Parisotto; Universidade Estadual de Maringá; Sousa, João Igor de; Universidade Estadual do Centro-Oeste,. |
| Castor bean crops are agriculturally relevant due to the quality and versatility of their oil, both for the chemical industry and for biodiesel production. Proper weed management is important for both the cultivation and the yield of castor bean crops; therefore, the intention of the present work is to review pertinent information regarding weed management, including the studies regarding weed interference periods, chemical controls for use in different crop production systems and herbicide selectivity, for castor bean crops. Weed science research for castor bean crops is scarce. One of the main weed management challenges for castor bean crops is the absence of herbicides registered with the Ministry of Agriculture, Livestock and Food Supply (MALFS).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weed competition; Herbicides; Selectivity; Ricinus communis. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17090 |
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| Neves, Leandro Camargo; Universidade Federal de Roraima; Campos, Andre José de; Universidade Federal de Roraima; Prill, Marcos André de Souza; Universidade Federal de Roraima; Roberto, Sérgio Ruffo; Universidade Estadual de Londrina. |
| The study was performed to identify the effect of delayed storage on the control of woolliness and leatheriness during cold storage of the late peach cultivars grown in Brazil. The fruits were harvested at the mature-green stage. All of the cultivars were exposed to temperatures of 20 ± 0.5ºC and 75 ± 3% of R.H. in a cold room for 0, 24, or 48 hours. Afterwards, the fruits were kept at 0 ± 0.5ºC and 92 ± 3% of R.H. for 28 days. The yellow pulp peaches, regardless of the length of delayed storage, did not present any symptoms of woolliness or leatheriness. The white pulp peaches not submitted to delayed storage developed either one or more of the other physiological disorders. Due to their lower level of pulp firmness, the control fruits of ‘Chimarrita’ and... |
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Palavras-chave: Prunus sp.; Chilling injury; Physiologic disturbances; Quality; Postharvest. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13347 |
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| Coradi, Paulo Carteri; Souza, Alex Eduardo Marchi de; Borges, Monica Cristina Rezende Zuffo. |
| The aim of this study was to identify the best conditions for drying and storing soybeans and sunflower grains to maintain their quality. In the first experiment, the soybeans were found to have initial moisture contents of 25 and 19% (w.b.) at different drying air temperatures (75, 90, 105, and 120°C). In the second step, the soybeans were evaluated after they were stored in paper bags and plastic polyethylene at temperatures of 3, 10 and 23°C for six months. In the third experiment, sunflower grains were tested after exposure to drying air temperatures of 45, 55, 65, and 75°C, and under storage conditions of 25°C and 50%, 20°C and 60%, 30°C and 40% RH over six months in paper bags and raffia. Drying the sunflower seeds at 45°C and storing them at 30°C... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Engenharia Agrícola postharvest; Processing and quality. Engenharia de Processamento de Produtos Agrícolas. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31121 |
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| Costa Crusciol, Carlos Alexandre; UNESP; Arf, Orivaldo; UNESP; Zucareli, Claudemir; UNESP; da Silva, Rosemeire Helena; UNESP; Cavarini, Claudio; UNESP; Nakagawa, João; UNESP. |
| Hydric deficiency is responsible for the low productivity and seed quality of upland rice, stimulating tillage under aspersion irrigated systems. Thus, the experiments carried out in 1994/95 and 1995/96 at Faculty of Engineering-Unesp, Ilha Solteira, Selviria-MS, had the aim to evaluate the seed yield and physiologic seed quality of the two rice cultivars, Oryza sativa L. (Poaceae), Carajas and IAC201, in dry and irrigated cultivation systems. The productivity, 1,000 seeds weight and physiologic seed quality were evaluated. The aspersion irrigation system showed better results compared to dry system in all aspects evaluated in the two years. The cultivar Carajas had a better performance than the IAC 201, independent of the... |
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Palavras-chave: 5.00.00.00-4 Ciências Agrárias Oryza sativa; Irrigação; Terras altas; Sementes; Qualidade fisiológica 5.00.00.00-4 Ciências Agrárias. |
| Ano: 2002 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2427 |
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| Registros recuperados: 1.635 | |
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