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Registros recuperados: 53 | |
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Lorensini, Felipe; Ceretta, Carlos Alberto; Lourenzi, Cledimar Rogério; De Conti, Lessandro; Tiecher, Tadeu Luis; Trentin, Gustavo; Brunetto, Gustavo. |
Grapevines grown on sandy soils are subjected to the application of supplemental nitrogen (N); however, there is little information available regarding the impact of these applications on yield, plant nutritional state and must composition. The aim of this study was to evaluate the yield, nutritional state and must composition of grapevines subjected to N fertilization. Cabernet Sauvignon grapevines were subjected to annual applications of 0, 10, 15, 20, 40, 80 and 120 kg N ha-1 in 2008, 2009 and 2010. During the 2008/09, 2009/10 and 2010/11 harvest seasons, leaves were collected during full flowering and when the berries changed color, and the total N content was analyzed. The grape yield and the enological characteristics of the must were evaluated. The... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.00.00.00-4 5.01.00.00-9 5.01.01.00-5 urea; Leaf analysis; Yield components; Vitis vinifera 5.01.01.05-6 urea; Leaf analysis; Yield components; Vitis vinifera 5.01.01.05-6. |
Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19354 |
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Leonello, Luiz Augusto Fumagalli; UNESP; Cazetta, Disnei Amélio; UNESP; Fornasieri Filho, Domingos; UNESP. |
Com o objetivo de identificar cultivares de milho pipoca que se constituam em alternativa viável aos produtores foi conduzido um experimento em delineamento experimental de blocos casualizados, com cinco genótipos de milho pipoca (BRS Ângela, Zélia, IAC 112, IAC 12 e IAC TC-01) e quatro repetições, na safra 2003/2004. O experimento foi instalado em espaçamento entre as linhas de 60 cm, com densidade populacional de 75 mil plantas por hectare. No decorrer do experimento, foram avaliadas características agronômicas e comerciais em condição de campo e de laboratório. A variedade BRS Ângela apresentou maior produtividade, seguida pelos híbridos simples IAC, com Zélia (híbrido triplo) apresentando menor produtividade. O híbrido simples IAC 12 apresentou pior... |
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Palavras-chave: 5.01.00.00-9 Agronomia Zea mays L.; Capacidade de expansão; Componentes produtivos Zea mays L.; Popping expansion; Yield components. |
Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/452 |
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sorkhi, farshad. |
In most northwest provinces of Iran such as West Azarbaijan province, soil salinity is a growing problem, particularly in irrigated agricultural areas, and has been found to reduce barley yield, dramatically. To investigate the effect of sodium chloride on two barley (Hordeum vulgare) cultivars, four levels of salinity: 0, 4, 8 and 12 dS/m, were employed as a factorial experiment arranged in a completely randomized design with three replications in a controlled environment of the greenhouse during 2017-2018. The results indicated that increasing salinity from 0 to 12 dS/m, decreased the emergence percentage significantly. Two cultivars of Zarjoo and Valfajr responded differently to salinity, so that Zarjoo showed a significantly higher emergence rate. This... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Emergence; Potassium; Proline; Salinity; Yield components. |
Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5855 |
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Ayed,Sourour; Rezgui,Mohsen; Othmani,Afef; Rezgui,Mounir; Trad,Hiba; Silva,Jaime A. Teixeira-da; Ben Younes,Mongi; Ben Salah,Hamadi; Kharrat,Mohamed. |
Abstract Wheat is a staple crop in Tunisia, but little is known about the response of Tunisian durum wheat (Triticum turgidumssp.durum) and bread wheat (Triticum aestivum L.) to water stress. In semi-arid regions, where cereals are concentrated, grain yield is subject to water deficit especially due to variability in rainfall. Therefore, the objective of this study was to evaluate the response to water stress of three durum wheat (Mâali, Nasr and Salim) and two bread wheat (Tahent and Utique) varieties. The experimental design was a complete randomized block, water treatments were rainfed conditions (T0) and irrigation applied at the tillering and flowering stages (T1, control) with three replications per treatment, and data was analyzed by ANOVA and Tukey... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water stress; Durum wheat; Bread wheat; Grain yield; Yield components. |
Ano: 2017 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100013 |
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Hosseini,Seyed Z.; Firouzi,Saeed; Aminpanah,Hashem; Sadeghnejhad,Hamid R.. |
Field experiment was conducted at Agricultural and Natural Resources Research Center of Golestan Province, Iran, to determine the effects of tillage system and weed management regime on yield and weed populations in soybean ( Glycin max L.). The experimental design was a split plot where the whole plot portion was a randomized complete block with three replicates. Main plots were tillage system: 1- No-till row crop seeding, 2- No-till seed drilling, 3- Tillage with disc harrow and drill planting, 4- Tillage with chisel packer and drill planting. The subplots were weed management regimes: 1-Weed control with herbicide application, 2- Hand weeding, 3- Herbicide application plus hand weeding, and 4- Non-weeding. Results indicated that the main effects of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soybean; Tillage systems; Weed management regimes; Yield; Yield components. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100377 |
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Pagnoncelli,Fortunato De Bortoli; Trezzi,Michelangelo Muzell; Brum,Betania; Vidal,Ribas Antonio; Portes,Álvaro Fernando; Scalcon,Everton Luiz; Machado,Adriano. |
ABSTRACT Plants from the genus ipomoea are among the most important weeds in Brazil. The objective of this study was to determine the impact of different densities of 2 species of Ipomoea (I. grandifolia and I. purpurea) under different environments (counties of Pato Branco and Renascença, Paraná state, Brazil) on soybean biometric variables, yield components and crop yield loss. Field experiments in 2 distinct places were conducted in a randomized block design, where 1 factor consisted of 8 plant densities (0, 2, 4, 6, 8, 10, 15 and 20 plants∙m−2), whereas the other factor consisted of the 2 Ipomoea species. Joint analysis of the data was performed considering the factors environment, Ipomoea densities and species. The impact of one Ipomoea plant∙m−2 was... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Interspecific competition; Ipomoea spp.; Glycine max; Biometric variables; Yield components. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400470 |
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Costa,Antonio; Campos,Luís Alberto Cogrossi; Riede,Carlos Roberto. |
Ten wheat (Triticum aestivum) genotypes were evaluated in microplots with aluminum saturation of 0, 15, 30 and 45%, during 1994, in Londrina, Paraná, Brazil. The soil was a Distrofic Red Latosol (Typic Haplorthox), with 65% saturation of aluminum, amended with dolomitic lime. Variables evaluated included grain yield and yield components: ears.m-2, grains.ear-1 and the weight of 1000 grains. Genotypes differed in yield and yield components. Increasing aluminum saturation decreased yield, ears.m-2 and grains.ear-1, but did not alter thousand kernel weight. The genotypes reacted differently in relation to the toxic soil aluminum. Anahuac and IAPAR 29 were aluminum sensitive; OCEPAR 16, Trigo BR 18, and Trigo BR 23 were moderately sensitive; IAPAR 6, IAPAR 53,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Aluminum tolerance; Aluminum soil saturation; Yield components. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100004 |
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Ehsan Safdar,Muhammad; Asif,Muhammad; Ali,Amjed; Aziz,Ahsan; Yasin,Muhammad; Aziz,Mudassir; Afzal,Muhammad; Ali,Asghar. |
Weed management programs should focus on environmental safety along with benefits to the farmer. We evaluated the effects of various weed control methods: daab practice (stale seed bed technique), manual hoeing, and the chemical method (mixture of Buctril Super 60EC [bromoxynil + MCPA]0.45 kg ai ha-1 and Puma Super 75EW [fenoxaprop-P-ethyl] 0.75 kg ai ha-1) in combination with different planting geometries: 22.5 cm apart single row, 22.5 cm apart crisscross double row, 30 cm apart single row and broadcast sowings on weed control and grain yield of spring wheat (Triticum aestivum L.) var. Sehar 2006 at the University College of Agriculture, University of Sargodha, Pakistan, during the winters of 2009 and 2010. The chemical method, manual hoeing and daab... |
Tipo: Journal article |
Palavras-chave: Weed control; Sowing pattern; daab practice; Crisscross sowing; Yield components. |
Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200003 |
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Kibar,Beyhan; Karaağaç,Onur; Kar,Hayati. |
The present investigation was carried out to study the direction and magnitude of heterosis in twenty-four hybrids for yield contributing head traits in cabbage (Brassica oleracea var. capitata L.). A field experiment was conducted during the cabbage growing season of 2011-2012 at the Black Sea Agricultural Research Institute, Samsun, Turkey. Hybrids and parents were evaluated in a randomized block design with three replications. Measurements were performed for head weight, head diameter and head length to estimate mid parent and better parent heterosis in each hybrid. The direction and magnitude of mid parent and better parent heterosis among hybrids for all the head traits was found to be highly variable. The maximum and significant heterosis in... |
Tipo: Journal article |
Palavras-chave: Cabbage; Hybrid vigor; Breeding; Head traits; Yield; Yield components. |
Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200007 |
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Arcoverde,Sálvio N. S.; Souza,Cristiano M. A. de; Rafull,Leidy Z. L.; Cortez,Jorge W.; Orlando,Roberto C.. |
ABSTRACT Machinery traffic intensification has been recurrent in intensive agriculture in annual crops, which may lead to structural soil degradation and, consequently, a reduction of its productive capacity. Therefore, this study aimed to assess the influence of tractor traffic intensification on soil physical attributes and soybean yield components. The study was performed in an Oxisol under no-tillage for 10 years, using a randomized block design with five tractor traffic intensities (0, 2, 4, 6, 8, and 12 passes) and five replications. Density, porosity, macroporosity, microporosity, and penetration resistance were assessed in the soil and stem diameter, number of pods per plant, number of grains per pod, grain weight per plant, thousand-grain weight,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Yield components; Shoot; Soil penetration resistance; Machinery traffic. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100113 |
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Weirich Neto,Pedro H.; Justino,Altair; Frare,Ivo; Gomes,Jorge N.; Garcia,Luiz C.. |
The aim of this study was to determine whether the form of placing the fertilizer by the planter during the sowing under mulch in the no till system affects the yield of corn. The treatments consisted of placing the fertilizer during the seeding 0.05 m below and beside the seed, in front of the cutting blade and without fertilizer, in 03 farms during 03 cropping years. The experimental design at each farm was the randomized block, with 08 repetitions, whose plots had 30 m² each. The initial population and yield components were evaluated. Under the experimental conditions it is concluded that base fertilization can affect the yield. Fertilizer placement can affect the initial stand, but not the yield. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tillage; Seeding fertilizer; Yield components. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600010 |
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Weirich Neto,Pedro H.; Fornari,Allison J.; Bauer,Fernando C.; Justino,Altair; Garcia,Luiz C.. |
The objective of this study was to determine the effects in the yield of soybean crop utilizing a trailing boom sprayer for chemical control of late season diseases. The experimental design was randomized blocks with 04 treatments, which consisted of applying fungicides with a traditional sprayer, trailing boom, the traditional sprayer plus the trailing boom simultaneously and control (without fungicide aerial application) in 05 repetitions per treatment. The variables evaluated were: final plant population, pods per plant, grains per pod, weight of one thousand grains and yield. It was concluded that the control of foliar diseases with fungicides presented weight of one thousand grains and yield significantly higher than the average of plots without... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Late season diseases; Spray boom; Yield components. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400026 |
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Souza,Lívia M de; Paterniani,Maria Elisa AGZ; Melo,Paulo César T de; Melo,Arlete MT de. |
The general combining ability (GCA), specific combining ability (SCA), and heterosis were studied in a complete diallel cross among fresh market tomato breeding lines with reciprocal excluded. Fifteen genotypes (five parents and ten hybrids) were tested using a randomized complete block design, with three replications, and the experiments were conducted in Itatiba, São Paulo state, Brazil, in 2005/06. The yield components evaluated were fruit yield per plant (FP), fruit number per plant (FN), average fruit weight (FW); cluster number per plant (CN); fruit number per cluster (FC), fruit wall thickness (FT) and number of locules per fruit (NL). Fruit quality components evaluated were total soluble solids (SS); total titratable acidity (TA); SS/TA ratio,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicum; Yield components; Fruit quality; Combining ability; Heterosis; Plant breeding. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000200011 |
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Registros recuperados: 53 | |
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