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Tree performance and fruit yield and quality of `Okitsu` Satsuma mandarin grafted on 12 rootstocks

CANTUARIAS-AVILES, Tatiana; MOURAO FILHO, Francisco de Assis Alves; STUCHI, Eduardo Sanches; SILVA, Simone Rodrigues da; ESPINOZA-NUNEZ, Erick
Fonte: ELSEVIER SCIENCE BV Publicador: ELSEVIER SCIENCE BV
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
57.272827%
The citriculture in Brazil, as well as in other important regions in the world, is based on very few mandarin cultivars. This fact leads to a short harvest period and higher prices for off-season fruit. The `Okitsu` Satsuma (Citrus unshiu Marc.) is among the earliest ripening mandarin cultivars and it is considered to be tolerant to, citrus canker (Xanthomonas citri subsp. citri Schaad et al.) and to citrus variegated chlorosis (Xylella fastidiosa Wells et al.). Despite having regular fruit quality under hot climate conditions, the early fruit maturation and absence of seeds of `Okitsu` fruits are well suited for the local market in the summer(December through March), when the availability of citrus fruits for fresh consumption is limited. Yet, only a few studies have been conducted in Brazil on rootstocks for `Okitsu`. Consequently, a field trial was carried out in Bebeclouro, Sao Paulo State, to evaluate the horticultural performance of `Okitsu` Satsuma mandarin budded onto 12 rootstocks: the citrandarin `Changsha` mandarin (Citrus reticulata Blanco) x Poncirus trifoliata `English Small`: the hybrid Rangpur lime (Citrus limonia Osbeck) x `Swingle` citrumelo (P. trifoliata (L.) Raf. x Citrus paradisi Macfad.); the trifoliates (P. trifoliata (L) Raf)`Rubidoux`...

Horticultural performance of `Folha Murcha` sweet orange onto twelve rootstocks

CANTUARIAS-AVILES, Tatiana; MOURAO FILHO, Francisco de Assis Alves; STUCHI, Eduardo Sanches; SILVA, Simone Rodrigues da; ESPINOZA-NUNEZ, Erick
Fonte: ELSEVIER SCIENCE BV Publicador: ELSEVIER SCIENCE BV
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
47.050317%
Despite its outstanding position, the Brazilian citriculture is established on a very limited pool of varieties that limits its expansion and restricts the fruit availability throughout the year. This situation determines the urgent necessity of developing alternative scion and rootstock cultivars, with good performance under local conditions. `Folha Murcha` sweet orange (Citrus sinensis (L.) Osbeck) is a late-harvest cultivar, suitable both for the juice processing industry and the fresh fruit market, being described as tolerant to citrus canker (Xanthomonas citri subsp. citri Schaad et al.), and less affected by citrus variegated chlorosis (Xylella fastidiosa Wells et al.). A study was conducted in Bebedouro, Sao Paulo State, Brazil, to evaluate the horticultural performance of `Folha Murcha` sweet orange budded onto 12 rootstocks: the citrandarin `Changsha` mandarin (Citrus reticulata Blanco) x Poncirus trifoliata `English Small`: the hybrid `Rangpur` lime (Citrus limonia Osbeck) x `Swingle` citrumelo (P. trifoliata (L.) Raf x Citrus paradisi Macfad.); the trifoliates (P. trifoliata (L.) Raf.)`Rubidoux`, `FCAV`, and `Flying Dragon` (P. trifoliata var. monstrosa); the `Sun Chu Sha Kat` mandarin (C. reticulata Blanco); the `Sunki` mandarin (Citrus sunki (Hayata) Hart. ex. Tanaka); the `Rangpur` limes (C. limonia Osbeck) `Cravo Limeira` and `Cravo FCAV`; `Carrizo` citrange (C. sinensis x P. trifoliata)...

Spatio-temporal variability of sugarcane yield efficiency in the state of Sao Paulo, Brazil

Marin, Fabio Ricardo; de Carvalho, Gustavo Luis
Fonte: EMPRESA BRASIL PESQ AGROPEC; BRASILIA DF Publicador: EMPRESA BRASIL PESQ AGROPEC; BRASILIA DF
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
57.54312%
The objective of this work was to assess the spatial and temporal variability of sugarcane yield efficiency and yield gap in the state of Sao Paulo, Brazil, throughout 16 growing seasons, considering climate and soil as main effects, and socioeconomic factors as complementary. An empirical model was used to assess potential and attainable yields, using climate data series from 37 weather stations. Soil effects were analyzed using the concept of production environments associated with a soil aptitude map for sugarcane. Crop yield efficiency increased from 0.42 to 0.58 in the analyzed period (1990/1991 to 2005/2006 crop seasons), and yield gap consequently decreased from 58 to 42%. Climatic factors explained 43% of the variability of sugarcane yield efficiency, in the following order of importance: solar radiation, water deficit, maximum air temperature, precipitation, and minimum air temperature. Soil explained 15% of the variability, considering the average of all seasons. There was a change in the correlation pattern of climate and soil with yield efficiency after the 2001/2002 season, probably due to the crop expansion to the west of the state during the subsequent period. Socioeconomic, biotic and crop management factors together explain 42% of sugarcane yield efficiency in the state of Sao Paulo.; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico

Spatio-temporal variability of sugarcane yield efficiency in the state of São Paulo, Brazil; Variabilidade espaço-temporal da eficiência produtiva da cana-de-açúcar no estado de São Paulo

Marin, Fabio Ricardo; Carvalho, Gustavo Luís de
Fonte: Embrapa Informação TecnológicaPesquisa Agropecuária Brasileira Publicador: Embrapa Informação TecnológicaPesquisa Agropecuária Brasileira
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
57.54312%
The objective of this work was to assess the spatial and temporal variability of sugarcane yield efficiency and yield gap in the state of São Paulo, Brazil, throughout 16 growing seasons, considering climate and soil as main effects, and socioeconomic factors as complementary. An empirical model was used to assess potential and attainable yields, using climate data series from 37 weather stations. Soil effects were analyzed using the concept of production environments associated with a soil aptitude map for sugarcane. Crop yield efficiency increased from 0.42 to 0.58 in the analyzed period (1990/1991 to 2005/2006 crop seasons), and yield gap consequently decreased from 58 to 42%. Climatic factors explained 43% of the variability of sugarcane yield efficiency, in the following order of importance: solar radiation, water deficit, maximum air temperature, precipitation, and minimum air temperature. Soil explained 15% of the variability, considering the average of all seasons. There was a change in the correlation pattern of climate and soil with yield efficiency after the 2001/2002 season, probably due to the crop expansion to the west of the state during the subsequent period. Socioeconomic, biotic and crop management factors together explain 42% of sugarcane yield efficiency in the state of São Paulo.

"Influência genotípica na absorção, utilização e na toxidez de manganês na soja"; Genotypic influence on the absorption, use and toxicity of manganese by soybean.

Lavres Junior, José
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 28/02/2007 Português
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47.488413%
Enquanto a toxidez de manganês (Mn) pode ser um problema comum nas regiões tropicais com predominância de solos ácidos, a deficiência deste nutriente, relatada em diversas espécies vegetais, tem sido atribuída principalmente ao uso excessivo de calcário. O estudo foi desenvolvido em casa-de-vegetação e teve como objetivo avaliar as causas de maior tolerância à toxidez de manganês e susceptibilidade à deficiência. Os cultivares de soja [Glycine max (L.) Merrill] Santa Rosa, IAC-15 e IAC-Foscarin 31 foram desenvolvidos em solução nutritiva (pH 4,97) com cinco níveis de Mn (0,5; 1,0; 2,0; 4,0 e 10,0 µmol/L), nos experimentos de eficiência de absorção e de uso (experimento 1), enquanto que para o estudo de tolerância ao excesso (experimento 2), as doses foram de 2,0; 100,0; 150,0; 200,0 e 250,0 µmol/L. Para as observações de anatomia e ultraestrutura (experimento 3), foram utilizadas três concentrações de Mn na solução nutritiva: 0,5; 2,0 (controle) e 200,0 µmol/L. O delineamento estatístico foi o de blocos completos ao acaso em esquema fatorial 5x3 (cinco doses de Mn e três cultivares), com três repetições. No experimento 1, os sintomas visuais de deficiência manifestaram-se, nos três cultivares...

Avaliação de doze cultivares de laranja doce de maturação precoce na região sudoeste do Estado de São Paulo.; Evaluation of twelve early maturing sweet orange cultivars in the southwestern São Paulo State

Caputo, Marina Maitto
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 22/06/2012 Português
Relevância na Pesquisa
47.089805%
É restrito o número de cultivares utilizado nos pomares comerciais, embora a diversidade de gêneros, espécies, cultivares e clones de citros seja grande. No entanto, o processamento industrial baseia-se em quatro cultivares principais, a Hamlin, como precoce, a Pêra como meia estação e a Natal e Valência como tardias. Alicerçada nestas quatro cultivares, o processamento industrial de sucos utiliza-se de frutos de junho a dezembro, com maior intensidade, e até fevereiro do ano seguinte quando a oferta diminui, sendo março a maio o período da entressafra. Por esse motivo, é de extrema importância selecionar cultivares que produzam nesse período. O objetivo, este trabalho foi avaliar o desempenho horticultural de doze cultivares de laranja doce de maturação precoce e identificar aquelas superiores à laranja Hamlin, com intuito de oferecer ao citricultor da região sudoeste do Estado de São Paulo, novas opções que produzam frutos de qualidade, tanto para fruta in natura como para processamento industrial e que tenham produção antecipada. As cultivares avaliadas foram Hamlin (cultivar precoce padrão), Westin, Pineapple, Rubi, Seleta Vermelha, Mayorca, Valência 2, Olivelands, Kawatta, IAPAR 73, Salustiana e Valência Americana. O delineamento experimental foi o inteiramente casualizado...

Desenvolvimento, produção e qualidade de frutos de abacateiro cv. "Hass" sobre dois porta-enxertos nas condições edafoclimáticas da região central do Estado de São Paulo; Growth, fruit yield and quality of 'Hass' avocado budded onto two rootstocks in the central region of São Paulo State

Moraes, Ana Flávia Garcia
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 10/09/2014 Português
Relevância na Pesquisa
57.34819%
A produção comercial brasileira de abacates ocorre em pomares implantados sobre porta-enxertos oriundos de sementes, o que resulta em grande desuniformidade das plantas com relação a tamanho da copa, produção, qualidade de frutos e suscetibilidade a patógenos do solo, principalmente Phytophthora cinnamomi, agente causal da podridão radicular, principal doença da cultura. Enquanto em outros países já é adotado o uso de porta-enxertos com características superiores que são propagados clonalmente visando minimizar esses problemas, no Brasil estes materiais ainda não foram avaliados. Durante os anos de 2010 a 2013 foi conduzido um experimento na Fazenda Jaguacy, município de Bauru, SP, com o objetivo de avaliar o desenvolvimento, produção e qualidade de frutos de abacateiro 'Hass' sobre dois porta-enxertos, sendo um proveniente de sementes ('Seedling') (T1) e o outro da cultivar Dusa obtido por propagação clonal (T2). O experimento foi conduzido seguindo um delineamento em blocos casualizados, com dois tratamentos, 5 repetições e 10 plantas por parcela, totalizando 100 plantas em avaliação. O desenvolvimento vegetativo foi obtido pela medição da altura e diâmetro das plantas, utilizados para o cálculo do volume de copa. A produção foi avaliada a partir da contagem e pesagem de todos os frutos de cada planta e também pelo cálculo da eficiência produtiva e da alternância produtiva entre anos. A qualidade dos frutos foi avaliada a partir da massa...

Spatio-temporal variability of sugarcane yield efficiency in the state of São Paulo, Brazil

Marin,Fabio Ricardo; Carvalho,Gustavo Luís de
Fonte: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira Publicador: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2012 Português
Relevância na Pesquisa
57.54312%
The objective of this work was to assess the spatial and temporal variability of sugarcane yield efficiency and yield gap in the state of São Paulo, Brazil, throughout 16 growing seasons, considering climate and soil as main effects, and socioeconomic factors as complementary. An empirical model was used to assess potential and attainable yields, using climate data series from 37 weather stations. Soil effects were analyzed using the concept of production environments associated with a soil aptitude map for sugarcane. Crop yield efficiency increased from 0.42 to 0.58 in the analyzed period (1990/1991 to 2005/2006 crop seasons), and yield gap consequently decreased from 58 to 42%. Climatic factors explained 43% of the variability of sugarcane yield efficiency, in the following order of importance: solar radiation, water deficit, maximum air temperature, precipitation, and minimum air temperature. Soil explained 15% of the variability, considering the average of all seasons. There was a change in the correlation pattern of climate and soil with yield efficiency after the 2001/2002 season, probably due to the crop expansion to the west of the state during the subsequent period. Socioeconomic, biotic and crop management factors together explain 42% of sugarcane yield efficiency in the state of São Paulo.

Screening method of lowland rice genotypes for zinc uptake efficiency

Fageria,Nand Kumar
Fonte: São Paulo - Escola Superior de Agricultura "Luiz de Queiroz" Publicador: São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2001 Português
Relevância na Pesquisa
47.25056%
Zinc deficiency in crop plants has been recognized as a worldwide nutritional constraint. A greenhouse experiment was conducted with the objective of developing a screening technique to evaluate lowland rice genotypes for zinc use efficiency. Ten lowland (Oryza sativa L.) genotypes were tested at low (0 mg Zn kg-1) and high (10 mg Zn kg-1) zinc levels applied to an Inceptisol. Genotypes differed significantly in grain yield and its components. Based on the grain yield efficiency index, genotypes were classified as efficient and inefficient. The most Zn efficient genotypes were: Metica 1, Epagri 108, CNA 7550, and CNA 8619. The most inefficient genotype was CNA 8319. The moderately efficient genotypes were: Javae, Rio Formoso, CNA 7556, and CNA 7857. The screening method used for Zn use efficiency is simple and does not require plant analysis. This methodology can be used for crop genotype evaluation of mineral stresses, which have direct bearings in genetic studies and breeding programes

Effect of tree conduce on the precocity, yield and fruit quality in apricot on acidic soil

Milošević,Tomo; Milošević,Nebojša; Glišić,Ivan
Fonte: Universidade Federal do Ceará Publicador: Universidade Federal do Ceará
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2012 Português
Relevância na Pesquisa
57.272827%
The experiment was carried out in the experimental orchard in Prislonica near Cacak (Western Serbia) on poor and acidic soil in 2008 and 2009 (second and third year after planting) to determine the effects of Mirobalan rootstock and Blackthorn interstocks with Open vase and Central leader tree conduce system on the length of shoot (LS), trunk cross-sectional area (TCSA), yield (Y), yield efficiency (YE), fruit weight (FW), soluble solids content (SS), titratable acidity (TA) and soluble solids/titratable acidity ratio or ripening index (SS/TA = RI). In the trial there were 5 trees from each apricot rootstock-cultivar and rootstock-interstock-cultivar combination in four replications. The analysis of variance was done in a completely randomized design. The treatment means were compared using LSD test at p < 0.05. Based on the results of this work, the Myrobalan rootstock with Open vase tree conduce induced a high vigorous of apricot trees and higher fruit weight. The Blackthorn interstock with Central leader tree conduce induced a less vigorous tree, higher yield and yield efficiency, and may be better suited for high-density plantings. Also, this interstock showed the higher SS/TA ratio when compared with Myrobalan rootstock. Other fruit quality traits...

Biomass Yield Efficiency of the Marine Anammox Bacterium, “Candidatus Scalindua sp.,” is Affected by Salinity

Awata, Takanori; Kindaichi, Tomonori; Ozaki, Noriatsu; Ohashi, Akiyoshi
Fonte: The Japanese Society of Microbial Ecology (JSME)/The Japanese Society of Soil Microbiology (JSSM) Publicador: The Japanese Society of Microbial Ecology (JSME)/The Japanese Society of Soil Microbiology (JSSM)
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
47.400786%
The growth rate and biomass yield efficiency of anaerobic ammonium oxidation (anammox) bacteria are markedly lower than those of most other autotrophic bacteria. Among the anammox bacterial genera, the growth rate and biomass yield of the marine anammox bacterium “Candidatus Scalindua sp.” is still lower than those of other anammox bacteria enriched from freshwater environments. The activity and growth of marine anammox bacteria are generally considered to be affected by the presence of salinity and organic compounds. Therefore, in the present study, the effects of salinity and volatile fatty acids (VFAs) on the anammox activity, inorganic carbon uptake, and biomass yield efficiency of “Ca. Scalindua sp.” enriched from the marine sediments of Hiroshima Bay, Japan, were investigated in batch experiments. Differences in VFA concentrations (0–10 mM) were observed under varying salinities (0.5%–4%). Anammox activity was high at 0.5%–3.5% salinity, but was 30% lower at 4% salinity. In addition, carbon uptake was higher at 1.5%–3.5% salinity. The results of the present study clearly demonstrated that the biomass yield efficiency of the marine anammox bacterium “Ca. Scalindua sp.” was significantly affected by salinity. On the other hand...

Nitrogen use efficiency in upland rice genotypes.

FAGERIA, N. K.; MORAIS, O. P. de; SANTOS, A. B. dos
Fonte: Journal of Plant Nutrition, London, v. 33, n. 11, p. 1696-1711, 2010. Publicador: Journal of Plant Nutrition, London, v. 33, n. 11, p. 1696-1711, 2010.
Tipo: Artigo em periódico indexado (ALICE)
Português
Relevância na Pesquisa
37.529617%
Nitrogen (N) deficiency is one of the most yield-limiting nutrients in upland rice growing regions word wide. A greenhouse experiment was conducted with the objective to evaluate nineteen upland rice (Oryza sativa. L.) genotypes for N use efficiency. The soil used in the experiment was an Oxisol and two N levels used were without N application (low level) and an application of 400 mg N kg?1 of soil (high level). Grain yield and yield components and N uptake parameters were significantly affected by N and genotype treatments. Regression analysis showed that plant height, shoot dry weight, number of panicles per pot, number of grains per panicle, grain harvest index, N uptake in shoot and grain were having significant positive relation with grain yield. Nitrogen concentration of 6.4 g kg?1 in the shoot is established as deficient level and 9.5 g kg?1 as sufficient level at harvest. Agronomic efficiency of N (grain yield/unit of N applied) and N utilization efficiency (physiological efficiency X apparent recovery efficiency) were significantly different among genotypes. These two N use efficiencies were having significant quadratic relationship with grain yield. Soil pH, exchangeable soil Ca and base saturation were having significantly positive association with grain yield. However...

Dry bean genotypes evaluation for growth, yield components and phosphorus use efficiency.

FAGERIA, N. K.; BALIGAR, V. C.; MOREIRA, A.; PORTES, T. A.
Fonte: Journal of Plant Nutrition, London, v. 33, n. 14, p. 2167-2181, 2010. Publicador: Journal of Plant Nutrition, London, v. 33, n. 14, p. 2167-2181, 2010.
Tipo: Artigo em periódico indexado (ALICE)
Português
Relevância na Pesquisa
47.377837%
Dry bean along with rice is a staple food for the population of South America. In this tropical region beans are grown on Oxisols and phosphorus (P) is one of the most yield limiting factors for dry bean production on these soils. A greenhouse experiment was conducted to evaluate P use efficiency in 20 elite dry bean genotypes grown at deficient (25 mg P kg?1 soil) and sufficient (200 mg P kg?1) levels of soil P. Grain yields and yield components were significantly increased with P fertilization and, interspecific genotype differences were observed for yield and yield components. The grain yield efficiency index (GYEI) was having highly significant quadratic association with grain yield. Based on GYEI most P use efficient genotypes were CNFP 8000, CNFP 10035, CNFP10104, CNFC 10410, CNFC 9461, CNFC 10467, CNFP 10109 and CNFP 10076 and most inefficient genotypes were CNFC 10438, CNFP 10120, CNFP 10103, and CNFC 10444. Shoot dry weight, number of pods per plant, 100-grain weights and number of seeds per pod was having significant positive association with grain yield. Hence, grain yield of dry bean can be improved with the improvement of these plant traits by adopting appropriate management practices. Soil pH, extractable P and calcium (Ca) saturation were significantly influenced by P treatments. Based on regression equation...

Spatio-temporal variability of sugarcane yield efficiency in the state of São Paulo, Brazil.

MARIN, F. R.; CARVALHO, G. L. de.
Fonte: Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 2, p. 149-156, fev. 2012. Publicador: Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 2, p. 149-156, fev. 2012.
Tipo: Artigo em periódico indexado (ALICE)
Português
Relevância na Pesquisa
47.49381%
The objective of this work was to assess the spatial and temporal variability of sugarcane yield efficiency and yield gap in the state of São Paulo, Brazil, throughout 16 growing seasons, considering climate and soil as main effects, and socioeconomic factors as complementary. An empirical model was used to assess potential and attainable yields, using climate data series from 37 weather stations. Soil effects were analyzed using the concept of production environments associated with a soil aptitude map for sugarcane. Crop yield efficiency increased from 0.42 to 0.58 in the analyzed period (1990/1991 to 2005/2006 crop seasons), and yield gap consequently decreased from 58 to 42%. Climatic factors explained 43% of the variability of sugarcane yield efficiency, in the following order of importance: solar radiation, water deficit, maximum air temperature, precipitation, and minimum air temperature. Soil explained 15% of the variability, considering the average of all seasons. There was a change in the correlation pattern of climate and soil with yield efficiency after the 2001/2002 season, probably due to the crop expansion to the west of the state during the subsequent period. Socioeconomic, biotic and crop management factors together explain 42% of sugarcane yield efficiency in the state of São Paulo.; 2012

Rootstocks for high fruit yield and quality of 'Tahiti' lime under rain-fed conditions

Cantuarias-Aviles, Tatiana; Mourão Filho, Francisco de Assis Alves; Stuchi, Eduardo Sanches; Silva, Simone Rodrigues da; Espinoza-Nuñez, Erick; Bremer Neto, Horst
Fonte: ELSEVIER SCIENCE BV; AMSTERDAM Publicador: ELSEVIER SCIENCE BV; AMSTERDAM
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
57.10754%
Despite considerable research conducted on 'Tahiti' lime [Citrus latifolia (Yu Tanaka) Tanaka] in several countries, few long-term studies have focused on rootstock effects on fruit production and quality under non-irrigated conditions. As for many other fruit crops, rootstock studies for 'Tahiti' lime are often based on the evaluation of several horticultural responses simultaneously, instead of considering multivariate statistical approaches which may provide with more comprehensive information. Consequently, a trial was installed to evaluate the horticultural performance of non-irrigated 'Tahiti' lime trees budded onto the following 12 rootstocks: 'HRS 801' and 'HRS 827' hybrids; 'Rubidoux', 'FCAV' and 'Flying Dragon' trifoliates; 'Sun Chu Sha Kat' and 'Sunki' mandarins; 'Cravo Limeira' and 'Cravo FCAV' 'Rangpur' limes; 'Carrizo' citrange, 'Swingle' citrumelo, and 'Orlando' tangelo. The trial was installed in 2001, in an 8 m x 5 m spacing with no supplementary irrigation. Measurements of yield, fruit quality oriented to different consuming markets, canopy volume and tree tolerance to drought, were performed. A multivariate cluster analysis identified both 'Rangpur' lime rootstocks as those inducing larger cumulative yield and higher percentage of fruits for the domestic market...

Produtividade de cultivares de batata e atributos de qualidade para processamento industrial nas formas de palha e chips; Yield efficiency and industrial attributes of potatoes cultivars for shoestring and chips

Araujo, Thaís Helena de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 20/01/2014 Português
Relevância na Pesquisa
47.25056%
O mercado brasileiro de processamento de batata tem mostrado expressivo crescimento nos ultimos anos. No entanto, sua expansao e condicionada pelo suprimento de materia-prima adequada ao processamento industrial. As principais industrias de batata frita priorizam cultivares aptas para cada forma de processamento, pois a escolha correta da cultivar contribui para a reducao do custo de producao e para o aumento do rendimento e da qualidade do produto final. O objetivo dessa pesquisa foi estudar a eficiencia produtiva, a aptidao culinaria e as caracteristicas das cultivares de batata quando processadas na forma de palha e chips. Avaliou-se nove cultivares de batata: Agata, Almera, Arizona, Caruso, Destiny, Excelence, Fontane, Markies e Saviola. \'Agata\' e \'Almera\' foram utilizadas como cultivares nao aptas para fritura e \'Fontane\' e \'Markies\' como cultivares recomendadas para fritura. O ensaio foi conduzido no periodo de janeiro a maio de 2013, nas condicoes ambientais de Nova Resende, na regiao Sudoeste de Minas Gerais. As cultivares Arizona, Caruso, Agata e Markies exibiram o maior potencial produtivo e, junto a Saviola, a maior producao de tuberculos comerciaveis. Os teores mais elevados de materia seca foram exibidos por \'Destiny\' e \'Caruso\' (superior a 20%)...

Reproductive biology traits affecting productivity of sour cherry

Aksic,Milica Fotiric; Rakonjac,Vera; Nikolic,Dragan; Zec,Gordan
Fonte: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira Publicador: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2013 Português
Relevância na Pesquisa
47.307783%
The objective of this work was to evaluate variability in reproductive biology traits and the correlation between them in genotypes of 'Oblačinska' sour cherry (Prunus cerasus). High genetic diversity was found in the 41 evaluated genotypes, and significant differences were observed among them for all studied traits: flowering time, pollen germination, number of fruiting branches, production of flower and fruit, number of flowers per bud, fruit set, and limb yield efficiency. The number of fruiting branches significantly influenced the number of flower and fruit, fruit set, and yield efficiency. In addition to number of fruiting branches, yield efficiency was positively correlated with fruit set and production of flower and fruit. Results from principal component analysis suggested a reduction of the reproductive biology factors affecting yield to four main characters: number and structure of fruiting branches, flowering time, and pollen germination. Knowledge of the reproductive biology of the 'Oblačinska' genotypes can be used to select the appropriate ones to be grown or used as parents in breeding programs. In this sense, genotypes II/2, III/9, III/13, and III/14 have very good flower production and satisfactory pollen germination.

Strawberry yield efficiency and its correlation with temperature and solar radiation

Palencia,Pedro; Martínez,Fátima; Medina,Juan Jesús; López-Medina,José
Fonte: Associação Brasileira de Horticultura Publicador: Associação Brasileira de Horticultura
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2013 Português
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46.81366%
The impact that future climatic conditions will have on agricultural productivity depends on the sensitivity to each environmental factor and relative changes in temperature, precipitation and UV-B radiation. The strawberry (Fragaria x ananassa) is a microclimatic crop cultivated almost worldwide and Spain is the world's second-largest strawberry producer after the USA. Strawberry production in Huelva has been affected by climate change in recent decades. Temperature and solar radiation are primary environmental factors controlling short-day strawberry plant growth and development. Temperature is a limiting factor in crop productivity. We assessed the effect of variations in temperature and solar radiation on strawberry production and crop cycle duration. The study was carried out in commercial strawberry fruit production fields in the province of Huelva (Spain's southwestern coast). Fresh plants of cv. Camarosa were cultivated from October to June. The resulting crop was recorded weekly in the production field: early and total strawberry productions (g/plant), were recorded from January to March and from January to May, respectively. Data revealed that between early production and temperature (R²= 0.86) and between early production and solar radiation (R²= 0.73) there was a linear relationship. However...

The performance of Adara as a cherry rootstock

Moreno Sánchez, María Ángeles; Montañés Millán, Luis; Tabuenca Abadía, María de la Concepción; Cambra Ruiz de Velasco, Rafael
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 918459 bytes; application/pdf
Português
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7 pages, 1 figure, 3 tables. The definitive version is available at: http://www.sciencedirect.com/science/journal/03044238; The field performance of Adara (Prunus cerasifera L.), SL 64 (Prunus mahaleb) and Colt (Prunus avium X Prunus pseudocerasus) rootstocks grafted with two sweet cherry cultivars (Prunus avium L. cvs. ‘Van’ and ‘Tardif de Vignola’), were tested for 12 years on a calcareous clay-loam soil which was flood irrigated. No tree grafted on Adara died during the experiment. The percentage of dead trees of ‘Tardif de Vignola’ on SL 64 and Colt reached 63% and 19%, respectively. The percentage of dead trees of ‘Van’ was 19% when grafted on SL 64 and 6% on Colt. For ‘Van’ scion, Adara was the most invigorating rootstock and showed the greatest yield efficiency and cumulative production after 12 years. For ‘Tardif de Vignola’ scion, Adara also gave greater cumulative production, mean fruit weight, and vigour than SL 64 and Colt. Leaf mineral analysis of ‘Van’ trees showed a mineral element concentration closer to the optimum for the trees grafted on Adara than for those grafted on SL 64 and Colt. According to our results, Adara seems to be a suitable rootstock for cherry cultivars to avoid root asphyxia in heavy soils and/or under flood irrigation conditions...

Avaliação de genótipos de arroz na eficiência de uso de zinco; Screening method of lowland rice genotypes for zinc uptake efficiency

Fageria, Nand Kumar
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; Formato: application/pdf
Publicado em 01/09/2001 Português
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A deficiência de Zn é reconecida como problema nutricional mundial para a produção das culturas. Foi conduzido um experimento em casa de vegetação, na Embrapa Arroz e Feijão, com o objetivo de se avaliar a eficiência do uso de Zn pelos 10 genótipos de arroz irrigado (Oryza sativa L.). Os genótipos foram testados aos níveis baixo (0 mg Zn kg-1) e alto (10 mg Zn kg-1), aplicados em um Inceptissolo. Diferenças significativas foram observadas entre os genótipos na produção de grãos e nos seus componentes. Baseado no índice de eficiência de produção, os genótipos foram classificados como eficientes e não eficientes. Os genótipos Metica 1, Epagri 108, CNA 7550, e CNA 8619 foram classificados como eficientes. O genótipo CNA 8319 foi não eficiente. Os genótipos Javaé, Rio Formoso, CNA 7556 e CNA 7857 foram classificados como moderadamente eficientes. O método de avaliação é simples e não precisa análise de plantas. Este métodologia pode ser usada na avaliação de genótipos para estresse nutricional que possui ligação direto com estudos genetíco e melhoramento.; Zinc deficiency in crop plants has been recognized as a worldwide nutritional constraint. A greenhouse experiment was conducted with the objective of developing a screening technique to evaluate lowland rice genotypes for zinc use efficiency. Ten lowland (Oryza sativa L.) genotypes were tested at low (0 mg Zn kg-1) and high (10 mg Zn kg-1) zinc levels applied to an Inceptisol. Genotypes differed significantly in grain yield and its components. Based on the grain yield efficiency index...