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Nitrogen as top-dressing and sowing densities on agronomic characteristics of maize crop AGRIAMBI
Serpa,Antoniele de F.; Mendes,Marcelo C.; Faria,Marcos V.; Ávila,Fabricio W. de; Szeuczuk,Kathia; Albuquerque,Carlos J. B..
ABSTRACT The main objective of this study was to evaluate the agronomic characteristics of commercial maize hybrids with modern and old architecture, under the influence of nitrogen (N) as top dressing with different plant populations. Two independent experiments were conducted, one in the municipality of Guarapuava (reduced spacing = 0.45 m) and the other in the municipality of Laranjeiras do Sul (conventional spacing = 0.90 m), in the Paraná state, Brazil, in the 2012/2013 growing seasons. The experiments were set in a randomized block design, with three replicates, in a factorial scheme (6 x 3 x 3), corresponding to six maize hybrids (with modern and old architecture), three plant populations (60000, 75000 and 90000 plants ha-1) and three N doses as top...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant architecture; Grain yield; Zea mays.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001000703
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Nitrogen doses and weed control via intercropping with gliricidia for corn production Planta Daninha
Silva,P.S.L.; Braga,J.D.; Ribeiro,M.S.S.; Oliveira,O.F.; Santos,T.S..
Many studies have demonstrated the beneficial influence of nitrogen doses on corn dry grain yield and green ear yield. Due to a growing concern with environmental degradation, many agricultural practices, adopted in the past, are being reexamined. With regard to weed control, strategies that employ mechanical control, including intercrops, are being the object of renewed interest. The purpose of this study was to evaluate the effects of the application of nitrogen doses (0, 40, 80, and 120 kg N ha-1; as ammonium sulfate) and weed control on the growth, green ear yield, and grain yield of the AG 1051 corn cultivar. A randomized block experimental design with split-plots and nine replications was adopted. In addition to nitrogen rates, the AG 1051 cultivar...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Gliricidia sepium; Ammonium sulfate; Green corn; Grain yield.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000300010
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Nitrogen management, cultivars and growing environments on wheat grain quality AGRIAMBI
Silva,Raphael R.; Zucareli,Claudemir; Fonseca,Inês C. de B.; Riede,Carlos R.; Gazola,Diego.
ABSTRACT The aim of this study was to evaluate the influence of nitrogen (N) fertilization, environment and cultivars on the protein concentration, sodium dodecyl sulfate sedimentation test (SDSS) volume and falling number in wheat. The experimental design was a randomized blocks in split plot scheme with four repetions. Four wheat genotypes were evaluated under six N managements in four enviroment (subplots). The wheat genotypes evaluated were IPR Catuara TM, BRS Gaivota, Quartzo and CD 120. Protein concentration, SDS sedimentation test, falling number and grain yield were evaluated. Combined analysis of variance for the four environment was performed and means were compared by Tukey test at p ≤ 0.05. The environmental effect is greater than the genotype...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Triticum aestivum L.; Grain yield; Urea; Ammonium sulfate.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001100826
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Nitrogen sufficiency index for estimating nitrogen fertilizer requirement of irrigated rice. Repositório Alice
SANTOS, A. B. dos; SILVA, M. A. S. da; SILVEIRA, P. M. da; CARVALHO, G. D.; STONE, L. F..
The proper nitrogen management is required to achieve high irrigated rice yield. This study aimed to determine the rice response to nitrogen topdressing doses and calibrate the chlorophyll meter reading. Three experiments were conducted in a randomized block design. In the first experiment, five N rates (0, 30, 60, 90, and 120 kg ha-1) were evaluated as the first, and 30 kg ha-1 N as the second topdressing, which were combined with the application of 30 kg ha-1 N as the first and five N rates, as the second topdressing. The other experiments assessed the application of 30 kg ha-1 of N, as the first, and four N rates (0, 40, 80, and 120 kg ha-1), as the second topdressing. There was a response to N application, with maximum technical efficiency reaching 33...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Nitrogen topdressing; Oryza Sativa; Nitrogênio; Fertilizante Nitrogenado; Arroz Irrigado; Clorofila; Rice; Irrigation management; Nitrogen fertilizers; Chlorophyll; Grain yield.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118934
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Nivel crítico del agua en el suelo para decidir la siembra en agricultura de zonas áridas: (con 4 figuras y 1 tabla) Phyton
López-Martínez,José Dimas; Salazar-Sosa,Enrique; Vázquez-Vázquez,Cirilo; Figueroa-Viramontes,Rafael; Berumen-Padilla,Salvador; Martinez-Rubin,Enrique.
Taking under consideration that potential evapotranspiration normally exceeds the growing season rainfall and that a water shortage can occur unless a reserve of soil water is stored before the crop is planted, it can be concluded that the amount of stored soil water at sowing time is a critical factor in the success of dryland cropping systems. The main aim of this investigation was to know if interaction c2 test is a valuable tool, when taking into account stored soil (0-60 cm depth) water at sowing time and maize grain yield, in making decision for sowing or not sowing at a given time. Data on the amount of soil water at sowing time and maize grain yield from four experiments carried out during 2001 and 2002 at the Ejido Francisco Villa, Lerdo, Durango,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genotypes; Interaction c2 test; Grain yield.
Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100034
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Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates PAB
Oliveira,Lillian Matias de; Marchesan,Enio; David,Ricardo de; Werle,Isabel Schlegel; Aramburu,Bruno Behenck; Donato,Gabriel; Silva,Anelise Lencina da; Costa,Ivan Francisco Dressler da.
Abstract: The objective of this work was to evaluate the effects of fertilization with nitrogen topdressing and silicates, as well as of the use of fungicides, on the occurrence of rice blast on panicles, milling yield, and whole grains, vitreous grains, and chalky kernels in a flood-irrigated rice cultivar sensitive to the disease. Two experiments were conducted in a randomized complete block design, in a 4×4×2 factorial arrangement, with four replicates: in experiment 1, four doses of nitrogen × four doses of calcium and magnesium silicate on soil × with and without fungicides; and, in experiment 2, four doses of nitrogen × four doses of potassium silicate applied on leaves x with and without fungicides. At the doses above 60 kg ha-1 nitrogen without...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Pyricularia oryzae; Grain yield; Whole grains.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102505
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Optimal nitrogen fertilization timing for upland rice. Repositório Alice
FAGERIA, N. K..
The objective of this study was to determine optimal timing of N fertilization on grain yield and yield components of upland rice.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Produção de grão; Arroz; Oryza sativa; Nitrogênio; Fertilizante nitrogenado; Características agronômicas; Grain yield; Field crops; Yield components.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/860452
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Optimizing row spacing and plant population arrangement for a new short-height castor genotype in fall-winter Agronomy
Souza-Schlick, Genivaldo David de; Soratto, Rogério Peres; Zanotto, Maurício Dutra.
Plant population and arrangement should be properly designed to maximize the seed yield of short-height genotypes of castor (Ricinus communis L.) in each cropping season. Experiments were performed in the in the fall-winter cropping season of 2008 and 2009 in Botucatu, State of São Paulo, Brazil, to evaluate the effects of row spacing (0.45, 0.60, 0.75, and 0.90 m) and plant population (25,000, 40,000, 55,000, and 70,000 plants ha-1) on agronomical traits, yield components, seed yield, and oil yield of the genotype FCA-PB. A high plant density caused a reduction in plant survival and increased the first raceme insertion height, particularly in the year with the higher rainfall. The basal stem diameter, number of racemes per plant, and seeds per raceme were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ricinus communis spatial plant distribution plant density grain yield oil content Manejo e tratos culturais Ciências Agrárias; Agronomia Ricinus communis; Spatial plant distribution; Plant density; Grain yield; Oil content Fitotecnia.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17455
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Path analysis under multicollinearity in soybean BABT
Bizeti,Henrique Stoco; Carvalho,Claudio Guilherme Portela de; Souza,José Roberto Pinto de; Destro,Deonisio.
This study aimed to establish the phenotypic correlations among several soybean traits with grain yield in direct and indirect effects using path analysis, and to compare alternative methods for minimizing the adverse effects of multicollinearity in estimating path coefficients. The experiment was conducted in greenhouse in a randomized complete block design with four replications. Nine soybean genotypes belonging to three seed size categories were used. The correlation studies and the path analysis showed that the seed size was not important for increased yield. The number of nodes and plant height at maturity showed significant correlation with grain yield. Using the least square methodology, the results obtained by path analysis under multicollinearity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic breeding; Glycine max; Grain yield; Seed size; Root and canopy traits.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500001
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Performance of dihaploid wheat lines obtained via anther culture Scientia Agricola
Salomon,Marcus Vinicius; Camargo,Carlos Eduardo de Oliveira; Petinelli Jr.,Armando; Azevedo Filho,Joaquim Adelino de.
The anther culture technique has been used in breeding programs to obtain haploid plants from hybrid plants of F1 generation and to develop more efficiently wheat cultivars. To study the behavior of dihaploid wheat lines and two check cultivars, IAC-24 and IAC-289, experiments were carried out under sprinkler irrigation at Monte Alegre do Sul, SP, Brazil, in an Haplic Acrisol and at Tatuí, SP, Brazil, in a Rhodic Ferrasol, during the years 1999 and 2000. Genotypes were evaluated for grain yield, 100 grain weight, plant height, resistance to leaf rust (Puccinia recondita f. sp. tritici Rob. Desm.) and lodging. The genotypes were also evaluated under laboratory conditions for their Al+3 toxicity tolerance using nutrient solutions. The line 8, originated from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Grain yield; 100 grain weight; Plant height; Lodging; Tolerance to aluminum.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100007
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Performance of Flooded Rice Grown in Succession to Winter Cover Crops Rev. Bras. Ciênc. Solo
Luz,Silmara da Correia; Silva,Paulo Regis Ferreira da; Boeni,Madalena; Bredemeier,Christian; Anghinoni,Ibanor; Menegati,Guilherme Batista; Maass,Matheus Barreto; Miozzo,Laís Correa.
ABSTRACT: Mean grain yield of flooded rice in southern Brazil has increased in recent years due to the use of high-yield cultivars and improvement of crop management practices. Nevertheless, stagnation in grain yields has been observed in some rice-producing regions. Adoption of conservation tillage systems based on cover crops may be a strategy to increase rice grain yield potential. The objective of the present study was to evaluate the effect of winter cover crops on initial establishment, development, and grain yield of flooded rice (Oryza sativa L.) grown under different fertilization levels and no-tillage. A field experiment was carried out for three consecutive years (2010/11, 2011/12, and 2012/13) in Cachoeirinha, Rio Grande do Sul, South Brazil....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Grain yield; Plant development; Fertilizer rate; Fertilization response.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100509
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Performance of grain sorghum hybrids under drought stress using GGE biplot analyses. Repositório Alice
BATISTA, P. S. C.; MENEZES, C. B.; CARVALHO, A. J.; PORTUGAL, A. F.; BASTOS, E. A.; CARDOSO, M. J.; SANTOS, C. V.; JULIO, M. P. M..
The objective of this study was to estimate the adaptability and stability of grain sorghum hybrids grown under post-flowering water stress and non-stress conditions. The trials were carried out in Nova Porteirinha-MG during the season of 2014 and 2015, and in Teresina-PI in the 2014 season. Twenty-nine-grain sorghum hybrids were evaluated, in a randomized complete block design, with three replications. Plots consisted of four lines with 3 m long. The grain yield data were submitted to the individual variance analysis, having considered the effects of the hybrids as fixed and the other effects as random. The joint analysis was carried out, and when the interaction genotypes x environments was significant, the grain yield data were submitted to the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Estresse abiótico; Sorghum bicolor; Sorgo granífero; Resistência a seca; Rendimento; Grão; Abiotic stress; Drought tolerance; Plant breeding; Grain yield.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076059
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Phenotypic recurrent selection in the common bean (Phaseolus vulgaris L) with carioca-type grains for resistance to the fungi Phaeoisariopsis griseola Genet. Mol. Biol.
Amaro,Geovani Bernardo; Abreu,Ângela de Fátima Barbosa; Ramalho,Magno Antonio Patto; Silva,Flávia Barbosa.
The efficiency of recurrent selection was assessed in obtaining common bean (Phaseolus vulgaris L) plant lines resistant to the phytopathogenic fungi Phaeoisariopsis griseola. The base bean population was obtained from the partial diallel between seven lines with carioca-type grains and 10 sources of resistance to P. griseola. The plants most resistant to the pathogen were selected in the F2 (S0) generation of the populations (C-0). The best S0:1 plants that presented carioca-type grains were intercrossed to obtain cycle I (C-I). The same procedure was adopted to obtain cycles C-II to C-V. In each recurrent selection cycle, S0:1 progenies selected were also assessed in experiments carried out in Lavras, Brazil, always using as check the Carioca MG...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Angular-leaf-spot; Grain yield; Heritability; Phaseolus vulgaris; Response to selection.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000400014
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Physiological aspects of grain yield of maize Thai Agricultural
Tanaka, A..
11 ill.
Palavras-chave: Corn; Maize; Grain yield; Yields; Corn physiology; ข้าวโพด; ผลผลิตเมล็ด; สรีรวิทยา.
Ano: 1972 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3886
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Physiological studies on low-tillering rice : an ideotype for increasing grain yield potential International Rice Research Institute
Kim, Jekyu.
187 l. : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Plant physiology; Tillering; Ideotypes; Grain yield.
Ano: 1988 URL: http://hdl.handle.net/123456789/1217
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Plant growth-promoting bacteria associated with nitrogen fertilization at topdressing in popcorn agronomic performance Bragantia
Spolaor,Leandro Teodoski; Gonçalves,Leandro Simões Azeredo; Santos,Odair José Andrade Pais dos; Oliveira,André Luiz Martinez de; Scapim,Carlos Alberto; Bertagna,Filipe Augusto Bengosi; Kuki,Mauricio Carlos.
ABSTRACT The use of plant growth-promoting bacteria is a promising alternative with low environmental impact to increase the efficiency of use of chemical fertilizers, ensuring high yield with better cost-effective ratio. In maize crops, several studies have demonstrated an increased yield when Azospirillum-based inoculants are used. In the case of popcorn, there are no available studies related to use of inoculation and its response on yield parameters. Thus, the aim of this study was to evaluate the field performance of popcorn when inoculated with the commercial product Masterfix L (A. brasilense Ab-V5 and A. brasilense Ab-V6) and the non-commercial inoculant UEL (A. brasilense Ab-V5 + Rhizobium sp. 53GRM1) associated with nitrogen fertilization. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Azospirillum brasilense; Rhizobium sp.; Inoculants; Grain yield.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100033
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Planting density of gliricidia when intercropped with corn for weed control Planta Daninha
Linhares,E.L.R; Silva,P.S.L; Oliveira,O.F; Oliveira,F.H.T; Torres,S.B.
Reduced use of herbicides that cause environmental pollution problems is of great interest in modern agriculture. Soil mulching with gliricidia (Gliricidia sepium) branches does not have an allelopathic effect on corn, but decreases weed populations. The objective of this study was to evaluate the effects of gliricidia planting density, when grown as an intercrop, on weed control and corn yield parameters. A randomized block design with split-plots and ten replicates was adopted. Corn cultivars AG 1051 and BM 3061 were grown without hoeing, with two hoes (at 24 and 44 days after planting), and intercropped with gliricidia (planted simultaneously with corn, between crop rows, using two seedlings/pit, spaced at 30, 40, or 50 cm). Twenty-one weed species were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Gliricidia sepium; Green ear yield; Grain yield.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000500010
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Práticas de manejo integradas para produção de arroz irrigado. Repositório Alice
MARIOT, C.H.P.; VIEIRA, V.M.; SILVA, P.R.F. da; MENEZES, V.G.; OLIVEIRA, C.F. de; FREITAS, T.F.S. de..
O objetivo deste trabalho foi realizar a avaliação técnica e financeira do arroz irrigado (Oryza sativa) em função da integração de práticas de manejo da cultura. O experimento foi conduzido em Cachoeirinha, RS. O delineamento experimental foi o de blocos ao acaso, com parcelas subsubdivididas, com quatro repetições. As estações de crescimento (2003/2004, 2004/2005 e 2006/2007) foram locadas na parcela principal, as épocas de semeadura (preferencial e tardia), nas subparcelas e os sistemas de práticas de manejo (baixo, médio, alto e muito alto), nas subsubparcelas. Os sistemas de práticas de manejo variaram quanto à densidade de semeadura, à adubação de base e de cobertura, à dose de herbicida e aos manejos da adubação nitrogenada de cobertura e da...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Oryza sativa; Análise financeira; Práticas culturais; Produtividade de grãos; Financial analysis; Management strategies; Grain yield.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/125767
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Producción de garbanzo (Cicer arietinum L.) en función del manejo y ambiente. Colegio de Postgraduados
Apáez Barrios, Maricela.
El garbanzo es una de las leguminosas más consumidas en México por sus características nutrimentales y nutracéuticas, lo que lo hace un cultivo se suma importancia. El objetivo del estudio fue determinar la respuesta a la distancia entre hileras de siembra y fertilización nitrogenada sobre índices de análisis de crecimiento, la biomasa, rendimiento y calidad de rendimiento. Durante el ciclo de producción otoño invierno de 2011, se realizó un estudio con garbanzo (Cicer arietinum L.) en terreno de productores cooperantes bajo condiciones de humedad residual en Huitzuco Gro., Méx, de clima cálido. Se evaluó la distancia entre hilera a 40 cm y 80 cm (D40 y D80, respectivamente) y fertilización nitrogenada (FN): 0, 50 y 100 kg N ha-1 (N0, N50 y N100,...
Palavras-chave: Biomasa total; Distancia entre hilera; Nitrógeno; Rendimiento de grano; Rentabilidad económica; Total biomass; Distance between row; Nitrogen; Grain yield; Profitability; Botánica; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/2010
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Production components of corn as function of seed distribution along the planting row AGRIAMBI
Silva,Flavio H. da; Cunha,Paulo C. R. da; Almeida,André C. de S.; Araújo,Lucas da S.; Jakelaitis,Adriano; Silveira,Pedro M. da.
ABSTRACT High corn yields in high-tech systems are related to proper crop implementation. This study aimed to evaluate the effects of variability in the distribution of seeds along the planting row on corn production components. The study was conducted under Cerrado conditions in the municipality of Urutaí, GO, Brazil. The experimental design was randomized blocks in a 5 x 2 factorial scheme, with four replicates. The effects of five coefficients of variation (0, 20, 40, 60 and 80%) of non-uniformity in the spatial distribution of seeds along the planting row of two corn hybrids (P30F53HX and P3646HX) were evaluated. No interactions were observed for the analysed corn variables. However, as the non-uniformity in seed distribution along the planting row...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coefficient of variation; Grain yield; Non-uniformity; Zea mays.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001201172
Registros recuperados: 199
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