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| Registros recuperados: 14 | |
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| Piva,Rafael; Botelho,Renato Vasconcelos; Ortolan,Cristiano; Müller,Marcelo Marques Lopes; Kawakami,Jackson. |
| A busca por uma viticultura mais sustentável exige o estudo de fontes alternativas de nutrientes que causem menor impacto ambiental. Neste contexto, este trabalho teve como objetivo avaliar o efeito de diferentes doses de cinzas vegetais e esterco bovino no desenvolvimento de videiras cv. Isabel. As doses utilizadas foram: 0; 750;1.500 e 2.250 g planta-1 de cinzas vegetais e 0; 5 e 10 kg planta-1 de esterco bovino, em esquema fatorial 4x3, com 12 tratamentos, cinco repetições e duas plantas por parcela. Nos dois primeiros ciclos de desenvolvimento vegetativo, foram avaliados o diâmetro dos ramos e o diâmetro do tronco e, no segundo ciclo, foi avaliado o índice de área foliar e realizadas as análises químicas de teores foliares de nutrientes. Houve efeitos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis labrusca L.; Adubação orgânica; Nutrição mineral; Agroecologia. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200033 |
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| Queiroz,Luiz Raphael de M; Kawakami,Jackson; Muller,Marcelo ML; Oliari,Ires Cristina R; Umburanas,Renan C; Eschemback,Vlandiney. |
| A cultura da batata demanda alto investimento para a sua implantação. Dentre os insumos responsáveis pelo alto custo da lavoura, destacam-se os fertilizantes e a semente. O objetivo deste trabalho foi identificar o efeito de doses de fertilizantes e tamanhos de batata-sementes no crescimento, produtividade e rentabilidade da cultura da batata. O experimento foi conduzido em uma lavoura comercial de batata em Guarapuava-PR, a partir de dezembro de 2010. Os tratamentos foram constituídos de 0, 2, 4 e 6 t ha-1 do fertilizante mineral 4-14-08 (parcela) e batatas-semente do tipo I e III (subparcela), arranjados em esquema de parcela subdividida, em blocos ao acaso, com três repetições. Foram avaliados o comprimento da haste principal, número de hastes, índice... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Adubação; Índice de área foliar; Produção; Tubérculo. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362013000100019 |
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| Vicensi,Marcelo; Müller,Marcelo Marques Lopes; Kawakami,Jackson; Nascimento,Ronaldo do; Michalovicz,Leandro; Lopes,Christian. |
| ABSTRACT Applications of phosphogypsum (PG) provide nutrients to the soil and reduce Al3+ activity, favoring soil fertility and root growth, but allow Mg2+ mobilization through the soil profile, resulting in variations in the PG rate required to achieve the optimum crop yield. This study evaluated the effect of application rates and splitting of PG on soil fertility of a Typic Hapludox, as well as the influence on annual crops under no-tillage. Using a (4 × 3) + 1 factorial structure, the treatments consisted of four PG rates (3, 6, 9, and 12 Mg ha-1) and three split applications (P1 = 100 % in 2009; P2 = 50+50 % in 2009 and 2010; P3 = 33+33+33 % in 2009, 2010 and 2011), plus a control without PG. The soil was sampled six months after the last PG... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcium sulfate; Calcium/magnesium ratio; Grain yield. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100515 |
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| Eschemback,Vlandiney; Kawakami,Jackson; Genú,Aline Marques; Almeida,Fabiola Oliveira de. |
| ABSTRACT: Determining the level of absorption of nutrients in the potato crop at different stages of development is important because it allows identification of the time when the elements are most required by plants. The objective of this research was to evaluate the level of nutrient absorption in cultivars after different planting times. Field experiment was conducted in Guarapuava-PR. Treatments consisted of three cultivars (Agata, BRS Clara, and BRS F63 Camila) and two planting times (October and February), in randomized blocks, with three replications in the crop season 2015/16. The total macro and micronutrient content (leaves, stems, and tubers) was quantified at 15 and 45 days after plant emergence. The total dry weight of plants was verified at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Fertilization; Fertility; Nutrition; Productivity; Variety. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600203 |
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| Rissini,Adriano Luiz Lodi; Kawakami,Jackson; Genú,Aline Marques. |
| RESUMO O manejo da adubação nitrogenada na cultura do trigo tem se evidenciado fator limitante à produtividade da cultura na Região Sul do Brasil, e a utilização de novas técnicas como o índice de vegetação por diferença normalizada (NDVI) pode auxiliar na estimativa do potencial produtivo da cultura e, consequentemente, na determinação da adubação nitrogenada. O objetivo deste trabalho foi avaliar o uso do NDVI, obtido por sensores passivo e ativo, como ferramenta para estimar a produtividade de grãos de cultivares de trigo submetidas a doses de nitrogênio. O experimento foi conduzido em Guarapuava, PR, em blocos ao acaso, seguindo o esquema fatorial 4 × 5, com quatro cultivares e cinco doses de N. As avaliações realizadas compreenderam leituras de NDVI,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adubação nitrogenada; Sensoriamento remoto; Triticum aestivum. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000601703 |
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| Santos,Keli Cristina; Kawakami,Jackson; Genú,Aline M; Passos,Sara; Eschemback,Vlandiney. |
| ABSTRACT The fertilization of potato crops generally does not take into account the genotype, although genotypes may respond differently to fertilization. This study aimed to determine the yield of new potato genotypes (cultivar BRS Camila and clone CL 02-05), as well as the cultivar Ágata, submitted to four NPK 4-14-8 fertilizer doses (0, 2, 4 and 6 t ha-1) in the crop seasons of 2013/14 and 2014/15. We evaluated the total and marketable tuber yield, total and marketable tuber number, percentage of marketable tuber dry weight, average marketable tuber weight and plant growth period. The experimental design was randomized blocks in split plot scheme, with fertilizer doses allocated as main plots and genotypes as subplots, with three replications. We did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Clone; Cultivar; Fertilization; Productivity; Variety. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100106 |
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| Eschemback,Vlandiney; Kawakami,Jackson; Melo,Paulo Eduardo de. |
| Abstract Little information on the comparative yield of the main potato cultivars (Solanum tuberosum subsp. tuberosum) used in Brazil is available. The objective of this study was to evaluate the performance of modern and old, European and Brazilian potato cultivars in different environments. Two experiments were carried in the field in 2013, in Brazil: in Guarapuava, in the state of Paraná, from January to April; and in Brasília, the Federal District, from August to November. Treatments consisted of six cultivars (origin, year of release): Bintje (European, 1910), Monalisa (European, 1982) and Agata (European, 1990); Baronesa (Brazilian, 1955), Catucha (Brazilian, 1995) and BRS Clara (Brazilian, 2010), arranged in complete blocks at random, with four... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Breeding; Variety; Yield potential.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000300377 |
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| Eschemback,Vlandiney; Kawakami,Jackson; Genú,Aline M; Stroparo,Dioni. |
| ABSTRACT The plant management used in potato crop is usually similar across the main producing regions in Brazil. Same plant spacing are commonly used, despite the differences in climate and soil of the various potato planting areas. The objective of this work was to evaluate the yield of potato cultivars in response to different plant spacing. Experiments were conducted in the field, and the treatments consisted of three cultivars (Agata, BRS Clara and BRS F63 Camila) and three plant spacing (20, 25 and 30 cm) in randomized blocks with three repetitions in two years. The total, marketable and non-marketable tuber yield, total and marketable number of tubers per area and size class, mean total and marketable tuber weight and percentage of tuber dry weight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Agata; BRS Clara; Density; Productivity; Variety. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000100089 |
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| Passos,Sara; Kawakami,Jackson; Nazareno,Nilceu RX; Santos,Keli C; Tamanini Junior,Cleto. |
| RESUMO A escolha da cultivar é fundamental para se alcançar altas produtividades de batata em sistema de cultivo orgânico. O objetivo deste trabalho foi avaliar a produtividade e os componentes produtivos de tubérculos e sugerir cultivar de batata para sistema de cultivo orgânico na região Sul do Brasil. O experimento foi realizado em duas safras, 2013/2014 e 2014/2015, três ensaios, em Guarapuava-PR e Caseiros-RS. Foram avaliadas oito cultivares (Agata, Clara, Eliza, Catucha, Aracy Ruiva, Itararé, Vitória e Cris) quanto à produtividade comercial e total de tubérculos, número de tubérculo total e comercial, e porcentagem de massa seca dos tubérculos. O delineamento experimental foi blocos ao acaso em esquema de parcela subdividida, em que os ensaios foram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Esterco; Rendimento; Tubérculo. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400628 |
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| Stoetzer,Alfred; Kawakami,Jackson; Marsaro Júnior,Alberto Luiz; Lau,Douglas; Pereira,Paulo Roberto Valle da Silva; Antoniazzi,Noemir. |
| The objective of this work was to evaluate the protective effect of different forms of insecticide application on the transmission of yellow dwarf disease in barley cultivars, as well as to determine the production costs and the net profit of these managements. The experiments were carried out during 2011 and 2012 growing seasons, using the following managements at main plots: T1, seed treatment with insecticide (ST) + insecticide on shoots at 15-day interval; T2, just ST; T3, insecticide applied on shoots, when aphid control level (CL) was reached; T4, without insecticide; and T5, ST + insecticide on shoots when CL was reached. Different barley cultivars - BRS Cauê, BRS Brau and MN 6021 - were arranged in the subplots. Insecticides lambda cyhalothrin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hordeum vulgare; Metopolophium dirhodum; Rhopalosiphum padi; Seed treatment; Yellow dwarf disease. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000300153 |
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| Kawakami,Jackson. |
| Neste trabalho verificou-se o efeito da redução de adubo e doses e parcelamento de nitrogênio (N) no crescimento e produtividade de plantas de batata. Formou-se dois experimentos que foram implantados em janeiro (1º experimento) e novembro (2º experimento) de 2006 em Guarapuava-PR, utilizando-se a cultivar Ágata. No 1º experimento, testaram-se três tratamentos com menores quantidades de fertilizantes e uma testemunha, simulando a adubação padrão da região, em blocos ao acaso com 4 repetições. No 2º experimento, avaliou-se doses (3) e parcelamento (com e sem) de nitrogênio (N), em um esquema fatorial 3 x 2 em blocos ao acaso com 3 repetições. Em ambos os experimentos coletou-se plantas em três estádios de desenvolvimento: início do florescimento, máximo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Adubação nitrogenada; Fertilização; Produção.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000200006 |
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| Virmond,Eduardo P; Kawakami,Jackson; Souza-Dias,José A C. |
| ABSTRACT Organic farming requires the production or use of certified seeds from the same cultivation system and, the information of potato cultivars adapted to organic production system is important. The objective of this work was to study the feasibility of utilizing sprouts of different potato cultivars, seed multiplication and yield potential in field conditions without using agrochemicals. Three experiments were conducted: the first experiment using sprouts as seed under protected cultivation in Guarapuava, Paraná State, Brazil, from November 2011 to February 2012; the second experiment was field conducted in Candói, Paraná State, from May to September 2012 and the third experiment was field conducted in Guarapuava, Paraná State, from February to May... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Phytophthora infestans; Minituber; Production; Yield.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000300335 |
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| Michalovicz,Leandro; Müller,Marcelo Marques Lopes; Foloni,José Salvador Simoneti; Kawakami,Jackson; Nascimento,Ronaldo do; Kramer,Luiz Fernando Machado. |
| Annual crop yield and nutrition have shown differentiated responses to modifications in soil chemical properties brought about by gypsum application. The aim of this study was to evaluate the effect of gypsum application rates on the chemical properties of a Latossolo Bruno (Clayey Oxisol), as well as on the nutrition and yield of a maize-barley succession under no-till. The experiment was set up in November 2009 in Guarapuava, Parana, Brazil, applying gypsum rates of 0.0, 1.5, 3.0, 4.5, and 6.0 Mg ha-1 to the soil surface upon sowing maize, with crop succession of barley. Gypsum application decreased the levels of Al3+ and Mg2+ in the 0.0-0.1 m layer and increased soil pH in the layers from 0.2-0.6 m depth. Gypsum application has increased the levels of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphogypsum; Calcium saturation; Sulfur; Zea mays; Hordeum vulgare. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500015 |
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| Eschemback,Vlandiney; Kawakami,Jackson; Genú,Aline M; Anderle,Leonardo Z. |
| ABSTRACT The objective of this work was to evaluate the effect of different planting dates on the morphological variables and yield of new potato cultivars. The treatments were three cultivars (Agata, BRS Clara and BRS F63 Camila) and three planting date (October, December and February), carried out in two crop years (2014/15 and 2015/16). Total and marketable yields, average mass of total and marketable tubers, growth period, leaf area index, number and dry weight of the tubers were evaluated. The first planting date resulted in higher yield than the third date. Cultivar BRS F63 Camila was the one with highest yield in this first planting date (47.4 t ha-1), due to greater number of tubers produced in relation to the other cultivars and to higher average... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Planting date; Tuber yield; Zoning. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000400415 |
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| Registros recuperados: 14 | |
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