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Search Results: 1 - 10 of 179146 matches for " ALMEIDA FREDERICO TERRA DE "
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Express?o sexual do mamoeiro sob diferentes laminas de irriga??o na Regi?o Norte Fluminense
Almeida, Frederico Terra de;Marinho, Cláudia Sales;Souza, Elias Fernandes de;Grippa, Sidney;
Revista Brasileira de Fruticultura , 2003, DOI: 10.1590/S0100-29452003000300005
Abstract: imperfect flowers occurrence in hermaphrodite plants of papaya tree is related to genetic causes, which are affected by environmental factors. high humidity conditions as well as high concentration of water and nitrogen in the soil tend to change the sex of the hermaphrodite flowers producing deformed fruits. the intent of this work was studying the production behavior of flowers of hermaphrodite types of the papaya tree 'improved sunrise solo 72/12' affected by the application of different depth of water in the north region of rio de janeiro, brazil. the experiment was carried out under randomized block design with seven treatments (depth irrigation) three repetitions and five useful plants in each experimental plot. the water was applied by microsprinkler irrigation system. the treatments applied were seven percentages of the reference evapotranspiration (t1 = 0; t2 = 40; t3 = 80; t4 = 120; t5 = 160; t6 = 200 and t7 = 240% of eto). after the flower emergence the numbers of sterile flowers, carpelloid and pentandric fruits were evaluated monthly. the sterile flowers occurrence was responsible for the largest losses in the production and it was larger in the summer and become worse with the water deficit. the adoption of irrigation amount of 120% of eto, minimized the losses caused by production of imperfect flowers.
Express o sexual do mamoeiro sob diferentes laminas de irriga o na Regi o Norte Fluminense
Almeida Frederico Terra de,Marinho Cláudia Sales,Souza Elias Fernandes de,Grippa Sidney
Revista Brasileira de Fruticultura , 2003,
Abstract: O aparecimento de flores imperfeitas nas plantas hermafroditas do mamoeiro está relacionado a fatores genéticos, os quais s o afetados pelo ambiente. Condi es de alta umidade, altos teores de nitrogênio e de água no solo tendem a mudar o sexo das flores hermafroditas, produzindo frutos deformados. O objetivo deste trabalho foi estudar o comportamento do mamoeiro 'Improved Sunrise Solo 72/12', na produ o dos diferentes tipos de flores hermafroditas, em rela o à aplica o de diferentes laminas de água, na regi o Norte Fluminense. O experimento foi conduzido sob delineamento em blocos casualizados com sete tratamentos (laminas de irriga o), três repeti es e cinco plantas úteis em cada parcela experimental. Foi utilizado um sistema de irriga o por microaspers o para aplica o de água. Os níveis de irriga o aplicados foram sete percentagens da evapotranspira o de referência (T1 = 0; T2 = 40; T3 = 80; T4 = 120; T5 = 160; T6 = 200 e T7 = 240 % da ET0). Após o início do florescimento foram avaliados, mensalmente, os números de flores estéreis, de frutos carpelóides e pentandricos. A ocorrência de flores estéreis foi responsável pelas maiores perdas na produ o e foi maior no ver o e agravada pelo déficit hídrico. A ado o de uma lamina em torno de 120% da ETo minimizou as perdas pela produ o de flores imperfeitas.
Growth and yield of papaya under irrigation
Almeida Frederico Terra de,Bernardo Salassier,Sousa Elias Fernandes de,Marin Sérgio Lúcio David
Scientia Agricola , 2003,
Abstract: 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 between water depths and degree days. Polynomial models of 2nd and 3rd order appropriately fitted the relationships degree day versus plant height, stem diameter, crown diameter and number of emitted leaves, for each water depth. Growth parameters related to degree days and to the applied treatments are indicative of yield potential. The total water depth that promoted the greatest fruit yield was 2,937 mm.
DESEQUILíBRIO NUTRICIONAL NA LIMEIRA áCIDA TAHITI INDUZIDO PELA APLICA O DE ETHEPHON
MARINHO CLáUDIA SALES,TERRA FREDERICO ALMEIDA,MONNERAT PEDRO HENRIQUE,CARVALHO ALMY JúNIOR CORDEIRO DE
Revista Brasileira de Fruticultura , 2001,
Abstract: O raleio de frutos da limeira ácida tahiti através da aplica o de ethephon é recomendado para incrementar a produ o na entressafra. Entretanto, o ethephon pode causar queda acentuada de folhas e levar ao esgotamento das reservas nutricionais da planta. Com o objetivo de avaliar o efeito do ethephon sobre os teores de nutrientes nas folhas da limeira ácida Tahiti, conduziu-se o presente trabalho. As plantas foram pulverizadas com uma solu o de ethephon para promover o raleio dos frutos produzidos nas diferentes épocas de aplica o, recebendo os seguintes tratamentos: 1) uma aplica o de ethephon a 400 mg L-1 em setembro; 2) uma aplica o de ethephon a 500 mg L-1 em dezembro; 3) duas aplica es de ethephon, a primeira a 400 mg L-1 em setembro e a segunda a 500 mg L-1 em dezembro; e 4) testemunha. As plantas que receberam uma aplica o de ethephon a 500 mg L-1 em dezembro e as que receberam duas aplica es de ethephon, uma em setembro a 400 mg L-1 e outra em dezembro a 500 mg L-1, apresentaram redu es nos teores de Ca, Mg, B e Mn e aumento nos de P, K e Cu. A redu o dos teores de Mn nas folhas foi acompanhada por manifesta es de sintomas de sua deficiência.
Teores de nutrientes do mamoeiro 'Improved Sunrise Solo 72/12' sob diferentes laminas de irriga o, no Norte Fluminense
ALMEIDA FREDERICO TERRA DE,BERNARDO SALASSIER,MARINHO CLáUDIA SALES,MARIN SéRGIO LúCIO DAVID
Revista Brasileira de Fruticultura , 2002,
Abstract: Entre os fatores que limitam a produtividade do mamoeiro, destacam-se a disponibilidade de água e nutrientes minerais. Assim, o ajuste de uma lamina de irriga o adequada para a cultura exige também o monitoramento do estado nutricional das plantas. O objetivo desse trabalho foi avaliar a resposta das diferentes laminas de irriga o (0; 40; 80; 120; 160; 200 e 240% da ETo) sobre os teores de nutrientes nas folhas do mamoeiro 'Improved Sunrise Solo 72/12'. As avalia es dos teores de nutrientes no mamoeiro foram realizadas em junho de 1999, retirando-se amostras de duas plantas de cada tratamento, das quais foram analisados, separadamente, o limbo e o pecíolo foliar. Os resultados indicam que os teores de N, P, K, Ca, Mg, B, Na, Fe e Cu, no limbo, e os teores de N, P, Ca, Mg, S, B, Na e Fe, no pecíolo, variaram significativamente com a lamina de água aplicada. A concentra o desses nutrientes em fun o das laminas de irriga o foi explicada, na maioria dos casos, por regress es lineares, decrescentes para N, K e Fe, e crescente para os demais nutrientes. A varia o significativa dos teores de nutrientes, em fun o da irriga o, mostra a necessidade de estudos que permitam o ajuste da aduba o à lamina de irriga o empregada.
Growth and yield of papaya under irrigation
Almeida, Frederico Terra de;Bernardo, Salassier;Sousa, Elias Fernandes de;Marin, Sérgio Lúcio David;Grippa, Sidney;
Scientia Agricola , 2003, DOI: 10.1590/S0103-90162003000300001
Abstract: 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 between water depths and degree days. polynomial models of 2nd and 3rd order appropriately fitted the relationships degree day versus plant height, stem diameter, crown diameter and number of emitted leaves, for each water depth. growth parameters related to degree days and to the applied treatments are indicative of yield potential. the total water depth that promoted the greatest fruit yield was 2,937 mm.
Estimativas da evapotranspira??o de referência em diferentes condi??es de nebulosidade
Souza, Adilson Pacheco de;Carvalho, Daniel Fonseca de;Silva, Leonardo Batista Duarte da;Almeida, Frederico Terra de;Rocha, Hermes Soares da;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000300001
Abstract: the objective of this work was to evaluate the performance of reference evapotranspiration (eto) estimation methods, in different cloudiness conditions, in seropédica, rj, brazil. the eto estimates were compared with daily measurements made on weighing lysimeter, between 6/1/2006 and 7/31/2007, by pooling the data or discretizing them according to the variance of daily clearness index (kt), in four classes: kt<0.35, cloudy sky (clo); 0.350.65, open sky (op). the mean absolute error (mbe), the square root of the mean square error (rmse) and indexes of adjustment and performance were used as quality indicators of the different methods. in the pooled data, penman-monteith fao (pmf) and hargreaves-samani (hs) methods had 84.05 and 79.52% performance indexes, respectively, while jensen & haise, linacre and makking methods had performances below 60%. changes in the cloudiness conditions affected the performance of eto estimation methods. the best results were obtained with the solar radiation (86.1%) and camargo (81.8%) methods, under the op and clo conditions. the pmf and hs methods can be employed in a complementary way, since their performance were 78.4% (clo and pcdi) and 77.6% (pcop and op), respectively.
Inherited capital and acquired capital the socio-political dynamics of producing legal elites
Almeida,Frederico de;
Brazilian Political Science Review (Online) , 2010,
Abstract: the aim of this paper is to present the results of research on the structures of social, political and academic capital that are able to demonstrate and explain the existence of power structures of the brazilian juridical field, especially with regard to the administration of the state judicial system. with this objective in mind, the research analyzed the personal, professional and academic trajectories of members of the institutional, associative and academic elites linked to the administration of the state judicial system. questioning the thesis that the social diversification of legal professions would necessarily produce ideological and political changes in the brazilian judicial system, my main hypothesis is that the existence of a political subfield of the administration of the judicial system may be a factor in the resistance to reforms, indicating the control of this political dimension of the brazilian state by elites with characteristics much less diverse than those of their professional bases.
Avalia??o da filtra??o e ozoniza??o de efluente sanitário primário: aspectos de inativa??o microbiana e variáveis de ozoniza??o
Lage Filho, Frederico de Almeida;
Química Nova , 2008, DOI: 10.1590/S0100-40422008000200023
Abstract: ozonation tests with and without prior filtration by means of a 50 micron mesh cartridge filter were conducted with primary sanitary effluents. filtration led to increased inactivation efficiencies with regard to total and thermotolerant coliforms but it did not seem to influence heterotrophic plate count (hpc) bacteria inactivation efficiencies significantly. application of the chick-watson model to experimental data obtained in the situation of constant inactivation showed that the ozone dosage was more important to bacterial inactivation than the contact time with regard to the cases of thermotolerant coliform inactivation in filtered samples and hpc bacteria and total coliform inactivation in non-filtered samples.
Accelerated Aging in Tomato Seeds  [PDF]
Andreia da Silva Almeida, Cristiane Deuner, Carolina Terra Borges, Geri Eduardo Meneghello, Lilian Madruga de Tunes, Francisco Amaral Villela
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.511179
Abstract:

The tomato plant (Lycopersicum esculentum L.) is a perennial, shrubby-like vegetable with high reproductive ability, which behaves like a typical annual crop. The aim of this work was to select suitable tests to assess the quality of different lots of tomato seeds. Six batches of tomato seeds were assessed for parameter values: moisture content, germination, first count, accelerated aging (standard: 40 mL of water; saline solution: 11 g NaCl/100mL of water and saturated saline solution: 40 g NaCl/100mL water) and seedling emergence in soil. Accelerated aging through the use of saturated salt solution for 48 h or 72 h at 41°C resulted in an alternative and efficient way to evaluate the physiological quality of tomato seeds. The standard accelerated aging test was less efficient and exhibited higher moisture variation.

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