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| Registros recuperados: 163 | |
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| Lorenzoni,Marcelo Z.; Rezende,Roberto; Santos,Fernando A. S.; Souza,Álvaro H. C. de; Seron,Cássio de C.; Nascimento,Jean M. R. do. |
| ABSTRACT This study aimed to determine the crop coefficient (kc) and respective water consumption of the Magali R. bell pepper hybrid cultivated in a protected environment from May to September 2015. Reference evapotranspiration was estimated using the Modified Penman-Monteith method and data were collected from an automatic weather station installed inside the greenhouse at the Universidade Estadual de Maringá, in the municipality of Maringá, PR, Brazil (23° 25’ 57’’ S, 51° 57’ 8’’ W, and altitude of 542 m). Evapotranspiration was measured using constant water table lysimeters. The total water consumption of the bell pepper crop was 282 mm and the average consumption was 2.35 mm d-1. The maximum evapotranspiration was 5.37 mm d-1. Crop coefficient values... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum L.; Evapotranspiration; Irrigation management. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000741 |
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| Silva,Cícero J. da; Frizzone,José A.; Silva,César A. da; Golynski,Adelmo; Silva,Luiz F. M. da; Megguer,Clarice A.. |
| ABSTRACT Irrigation management is essential for tomato fruits yield and quality. Therefore, the aim of this study was to evaluate the yield of tomatoes for industrial processing, ‘BRS Sena’ hybrid, subjected to water depths and irrigation suspension periods before harvest, irrigated by subsurface drip irrigation, in Goiás, Brazil (17º 49’ 19.5” S and 49º 12’ 11.3” W), in 2015 and 2016. The experiments were conducted under a randomized complete block design, with four replications, in split plots. Five irrigation levels (50, 75, 100, 125 and 150% of crop evapotranspiration) were evaluated in the plots and five irrigation suspension periods (0, 7, 14, 21 and 28 days before harvest) were evaluated in the subplots. At 125 days after transplanting the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicon L.; Subsurface drip irrigation; Industrial tomato; Irrigation management; Crop evapotranspiration. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800591 |
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| Pereira,Marcel T. J.; Silva,Tonny J. A. da; Bonfim-Silva,Edna M.. |
| ABSTRACT Irrigation management, associated with the management of fertilization through the use of waste from plant material burning, has proven to be a sustainable strategy to increase the production of ornamental plants in greenhouses. The objective of this study was to evaluate the development of gladiolus subjected to soil water contents and wood ash fertilization in a Cerrado Oxisol. The experiment was conducted under controlled conditions from April to September 2014, in a randomized block design, arranged in a 5 x 5 factorial, with four replicates. The treatments consisted of five water contents (7, 14, 21, 28, and 35%) and five doses of wood ash (0, 8, 16, 24 and 32 g dm-3). Irrigation management was carried out using the portable probe Diviner... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gladiolus x grandiflorus L.; Irrigation management; Ornamental plants; Solid waste in agriculture. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400350 |
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| Silva,Alexsandro Oliveira da; Bassoi,Luis Henrique; Silva,Davi José. |
| Abstract Fertigation can increase the efficiency of fertilizer application and facilitate the nutritional management of a crop. Thus, nitrate and potassium movements in a sandy loam soil were evaluated as function of fertilizer doses during three growing seasons of the grapevine cv. Syrah grafted on Paulsen 1103 rootstock (June to October 2013, February to June 2014, and August to November 2014) in Petrolina, state of Pernambuco, Brazil. Five doses of N (0, 15, 30, 60 and 120 kg ha-1) and five doses of K2O (0, 15, 30, 60 and 120 kg ha-1) were combined in a fractional 52 factorial design, totaling 13 combinations, in a randomized blocks experiment with four replications. The concentrations of nitrate and potassium in the soil solution were determined.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Irrigation management; Porous cup extractor; Soil solution. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000503003 |
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| Castricini,Ariane; Oliveira,Polyanna Mara de; Martineli,Maristella; Coelho,Eugênio Ferreira; Rodrigues,Maria Geralda Vilela. |
| Resumo A significant portion of papaya production in the state of Minas Gerais originates from irrigated crops, and irrigation management using the partial root zone drying technique (PRD) is a fundamental alternative to reduce water waste. This study aimed to evaluate the quality of ‘Tainung 1’ papaya produced under PRD in semi-arid conditions of northern state of Minas Gerais. PRD treatments were composed of reduction of the calculated irrigation water (CIW) by 50%, applied on one side of the irrigation line, with alternation of 7, 14 and 21 days or without alternation and full irrigation, applying 100 % CIW in both lateral plant rows. Each experimental plot consisted of ten plants, and from six plants, fruits were harvested for evaluations at harvest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya L; Irrigation management; Postharvest. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000506001 |
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| Monteiro,Alex Becker; Reisser Júnior,Carlos; Romano,Luciano Recart; Timm,Luís Carlos; Toebe,Marcos. |
| Abstract The use of water potential indicators in the plant has been adopted in irrigation management, in recent years, since it is accepted that the plant is the best indicator of its own water status. The objective of this study was to verify the relationship between water potential in peach tree branches and the evaporative demand of the atmosphere and the water availability in two textural classes of an Aquertic Hapludalf soil, aiming to adopt irrigation management strategies based on the water potential in the plant. Research was carried out in a commercial peach orchard, cv. Esmeralda, in the municipality of Morro Redondo-Rio Grande do Sul state, Brazil. Four peach tree rows were evaluated, being two irrigated and two non irrigated. The irrigation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prunus persica (L.); Water status; Evapotranspiration; Soil water content; Irrigation management. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100702 |
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| Correia,Caio César Silva Alvarenga; Cunha,Fernando França da; Mantovani,Everardo Chartuni; Silva,Derly Jose Henriques da; Dias,Santos Henrique Brant. |
| ABSTRACT The region of Viçosa in Brazil stands out for vegetable production. For success in this activity, the correct choice of cultivar with the correctly applied irrigation are necessary. As such, the aim of this study was to evaluate the agronomic performance of radish cultivars submitted to different irrigation depths. The radish crop was grown in a protected environment over three cycles, for periods of 38 to 40 days. The experimental design was of randomised complete blocks in split plots with five replications, comprising five irrigation depths (50, 75, 100, 125 and 150% of crop evapotranspiration-ETc) in the plots, with three radish cultivars in the subplots. (Hybrid no 25 - Sakata, Crunchy Royale - Sakata and Vip Crimson - Feltrin). A drip... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protected cultivation; Horticulture; Irrigation management; Raphanus sativus. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100411 |
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| Costa Junior,Manoel de Jesus Nunes da; Bastos,Edson Alves; Cardoso,Milton José; Andrade Júnior,Aderson Soares de. |
| ABSTRACT The cowpea is of great socioeconomic importance in the North, Northeast and Mid-West of Brazil, and its irrigated farming has recently been on the increase in these regions. The aim of this study was to evaluate the agronomic performance of the cowpea 'BRS Tumucumaque' for different row spacings and irrigation depths, under the conditions of soil and climate of Teresina, in the State of Piauí. The experiment was carried out from August to November 2014, in a Yellow Argisol at the Experimental Area of Embrapa Meio-Norte in Teresina. The experimental design was of randomised blocks in subdivided lots, with four replications. The treatments consisted of five irrigation depths (40% ETo, 70% ETo, 100% ETo, 130% ETo and 160% ETo) in the main plot, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Grain yield; Irrigation management; Plant density; BRS Tumucumaque. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500774 |
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| Cui,Jintao; Shao,Guangcheng; Lu,Jia; Keabetswe,Larona; Hoogenboom,Gerrit. |
| ABSTRACT In areas where the supply of water for irrigation is limited, tomato production is often subject to drought stress. In order to investigate the drought sensitivity of tomato (Lycopersicon esculentum Mill.) yield and quality during different growth stages, field and pot experiments were conducted in a high tunnel in southern China during the 2013 and 2016 growing seasons. The experiments consisted of four treatments. Crops were drip-irrigated to 100 % of field capacity at all growth stages divided into treatment T1 (control) and the treatment group T2, T3 and T4 receiving half the amount of irrigation as T1 when the soil water content reached 70 % of field capacity, the vegetative phase (stage I) T2, the flowering and fruit development phase (stage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Deficit irrigation; Sensitivity index; Irrigation management; High tunnel. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000200601 |
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| Almeida,Frederico Terra de; Bernardo,Salassier; Sousa,Elias Fernandes de; Marin,Sérgio Lúcio David; Grippa,Sidney. |
| Thermal units or degree day systems can both be used to quantify relationships between plants and air temperature. The Northern Fluminense region holds no tradition for irrigated papaya (Carica papaya L.) cropping and, because of the need for irrigation, it is important knowing its growth and development characteristics under these conditions. This study aimed to determine the relationship between growth rate of papaya plants and degree days, and its effect on crop productivity, under different irrigation levels. An experiment was set up with the cultivar "Improved Sunrise Soil 72/12", in a randomized blocks design, with seven irrigation water depths and three repetitions; crop growth and yield parameters were evaluated. There were significant correlations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Irrigation management; Development; Papaya; Productivity. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300001 |
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| Souza, Adilson Pacheco de; UNESP - Faculdade de Ciências Agronômicas; Lima, Márcio Emanoel de; Programa de Pós-Graduação em Fitotecnia, UFRRJ, Seropédica; Carvalho, Daniel Fonseca de; UFRRJ, Seropédica; Guerra, José Guilherme Marinho; Embrapa Agrobiologia, Seropédica; Andrade, Irineu Pedro de Sousa; UFRRJ, Seropédica; Rocha, Hermes Soares da; UFRRJ, Seropédica. |
| Este trabalho objetivou avaliar o comportamento da vegetação espontânea com relação às taxas de decomposição de diferentes coberturas do solo submetidas à variação de lâminas de irrigação. Foram utilizados resíduos vegetais de Gliricídia (Gliricidia sepium), feijão-guandu (Cajanus cajan), capim Cameroon (Pennisetum purpureum) e Bambu (Bambusa vulgaris ‘vitata’). As lâminas irrigadas foram caracterizadas como T5, T4, T3, T2 e T1, correspondendo a aproximadamente 117, 100, 72, 59 e 38% da ETo. A decomposição dos resíduos vegetais foi analisada por meio de covered litter, em 2, 4, 7, 15, 30, 60, 90, 120 e 150 dias após instalação (DAI). Foram realizadas amostragens da vegetação espontânea aos 26, 64, 92, 124 e 152 DAI, em uma área de 0,0625 m² |
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Palavras-chave: 5.01.03.00-8 Palhada; Manejo da irrigação; Manejo de plantas daninhas Fitotecnia Straw; Irrigation management; Weed management. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3732 |
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| DELAZARI,FÁBIO T.; ASSIS,IGOR R.; CABRERA,DIEGO F.V.; FERREIRA,MARIANE G.; DIAS,LUIZ E.; RUEDA,ANGELICA; ZANUNCIO,JOSÉ C.; SILVA,DERLY J.H.. |
| Abstract The sweet potato is an alternative energy source, but its sustainability depends on efficient water use. The objective of this study was to evaluate sweet potato morpho-physiological characteristics, and water use efficiency (WUE). Irrigation depths of 50, 75, 100, and 125% of crop evapotranspiration (ETc) were applied. The morpho-physiological indicators, WUE, leaf area index (LAI), leaf water potential, leaf temperature, and leaf chlorophyll index (ICF), were evaluated. The WUE of the sweet potato cultivars increased until the 75% water depth of the ETc. The LAI of these cultivars increased with irrigation depth, with higher values at 100% of the ETc. The leaf water potential of the two sweet potato cultivars was lowest with the lower irrigation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ipomoea batatas; Irrigation management; Leaf temperature; Water stress; Water use efficiency. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703541 |
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| Araújo,Renato; Alves Junior,José; Casaroli,Derblai; Evangelista,Adão Wagner Pêgo. |
| ABSTRACT The need to irrigate sugarcane in the Brazilian Savanna is due to the lack of rain from April to September. For efficient sugar accumulation, the crop needs water stress or heat stress at the maturation stage. However, when the water deficit is intense at this stage, it occurs the reduction in crop production. The objective of this study was: (i) to assess the quality of the raw material of sugarcane in different drying-off seasons before harvest; (ii) to evaluate the influence of heat stress on the culture. The experiment was conducted in Santo Antônio de Goiás (GO), Brazil, in Oxisol, with CTC4 variety in cane-plant cycle. A randomized block design in a split-plot array in time was used. The treatments of the plots were five drying-off times... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water stress; Irrigation management; Brazilian savanna; Thermal stress. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100118 |
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| Martim,Sílvia A.; Santos,Mirella P.; Peçanha,Anderson L.; Pommer,Celso; Campostrini,Eliemar; Viana,Alexandre P.; Façanha,Arnoldo R.; Bressan-Smith,Ricardo. |
| Winegrape productivity and quality has been related to the regulated deficit irrigation, with important implications for the plant bioenergetics. When water deficit is imposed to grapevine plants, alterations in overall photosynthesis and cell respiration are observed. The aim of this study was to assess the modulations promoted by water stress on photosynthesis and respiration in leaves of the cv. Cabernet Sauvignon (cv. CS) for better understanding the physiological responses related to its drought tolerance and quality improvement under water deficit. For this purpose, measurements of photosynthetic efficiency, leaf water potential, gas exchange and O2 consumption were carried out. Leaf water potential, photosynthesis, stomatal conductance,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Drought tolerance; Irrigation management; Respiratory chain regulation; Plant bioenergetics. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000200002 |
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| Registros recuperados: 163 | |
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