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Search Results: 1 - 10 of 273221 matches for " Moraes Neto Sebasti?o Pires de "
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Produ o de mudas de espécies arbóreas nativas com combina es de adubos de libera o controlada e prontamente solúveis
Moraes Neto Sebastio Pires de,Gon?alves José Leonardo de Moraes,Rodrigues Carlos José,Geres Washington Luiz de Azevedo
Revista árvore , 2003,
Abstract: O objetivo deste estudo foi testar diversas doses e fontes de adubo para verificar o crescimento de mudas de cinco espécies arbóreas nativas. As espécies utilizadas foram as pioneiras Guazuma ulmifolia (mutambo) e Croton floribundus (capixingui), as secundárias iniciais Peltophorum dubium (canafístula) e Gallesia integrifolia (pau-d'alho) e a clímax Myroxylon peruiferum (cabreúva). Os tratamentos consistiram principalmente na utiliza o de adubo de libera o controlada (ALC, 19-06-10, N-P2O5-K2O) de maneira pura ou em mistura com adubo em pó (AP, 14-16-18), ou AP mais aduba o de cobertura periódica (ACP, 19-06-20), comparados com aduba o convencional (aduba o de base mais aduba o de cobertura com sulfato de am nio e cloreto de potássio) e testemunha (sem aduba o). O substrato utilizado foi composto por 60% de húmus de minhoca, 30% de casca de arroz carbonizada e 10% de terra de subsolo, em base volumétrica. O recipiente que comportou o substrato foi o tubete de polipropileno de 50 cm3 de capacidade. Entre os tratamentos que produziram mudas de boa qualidade ao final do experimento, para cada espécie, aqueles com doses de 3,2 e 4,8 kg de adubo de libera o controlada por metro cúbico de substrato foram comuns a todas as espécies e, adicionalmente, resultaram em dimens es apropriadas para plantio no campo em menor tempo do que os outros tratamentos.
Fertiliza o de mudas de espécies arbóreas nativas e exóticas
Moraes Neto Sebastio Pires de,Gon?alves José Leonardo de Moraes,Arthur Jr. José Carlos,Ducatti Fabiane
Revista árvore , 2003,
Abstract: Doses crescentes de fertilizante de libera o controlada (FLC) foram comparadas com fertiliza o convencional e tratamento sem fertiliza o. Estes tratamentos foram testados em mudas das pioneiras Guazuma ulmifolia (mutambo), Eucalyptus grandis e Pinus caribaea var. caribaea, da secundária inicial Peltophorum dubium (canafístula) e da clímax Calycophyllum spruceanum (mulateiro), as quais cresceram em casa de vegeta o. As mudas foram cultivadas em tubetes de 50 cm3 de capacidade, tendo como substrato uma mistura contendo 50% de húmus de minhoca, 30% de casca de eucalipto decomposta e 20% de casca de arroz carbonizada, em base volumétrica. Aos 125 dias após a semeadura, as mudas de G. ulmifolia, E. grandis e P. dubium submetidas à fertiliza o convencional apresentaram maior crescimento em altura e biomassa seca da parte aérea comparados aos dos tratamentos que receberam FLC. Contudo, para estas espécies, a biomassa seca da raiz das mudas submetidas ao tratamento convencional foram semelhantes à das mudas produzidas com as duas maiores doses de FLC (4,28 e 6, 42 kg/m3 de substrato), e a raz o entre raiz e parte aérea foi maior para a dose de 6,42 kg/m3 (FLC), comparada à do tratamento convencional para as duas primeiras espécies. O Calycophyllum spruceanum e o Pinus caribaea var. caribaea tiveram pequeno desenvolvimento em todos os tratamentos, aos 125 dias.
Produ??o de mudas de espécies arbóreas nativas com combina??es de adubos de libera??o controlada e prontamente solúveis
Moraes Neto, Sebastio Pires de;Gon?alves, José Leonardo de Moraes;Rodrigues, Carlos José;Geres, Washington Luiz de Azevedo;Ducatti, Fabiane;Aguirre Jr, José Hamilton de;
Revista árvore , 2003, DOI: 10.1590/S0100-67622003000600004
Abstract: this study aimed to test different doses and sources of fertilizers to verify the growth of seedlings of five native tree species. the species used were the pioneers guazuma ulmifolia (mutambo) and croton floribundus (capixingui), the early secondaries peltophorum dubium (canafístula) and gallesia integrifolia (pau-d'alho) and the climax myroxylon peruiferum (cabreúva). the treatments consisted mainly of the use of controlled-release fertilizers (crf, 19-06-10, n-p2o5-k2o) alone or combined with powder fertilizers (pf, 14-16-18) or with pf and periodic covering fertilization (pcf, 19-06-20) compared with conventional fertilization (base fertilization plus covering fertilization with ammnonium sulfate and potassium chloride) and control (without fertilization). the substrate was composed of 60% earthworm humus + 30% carbonized rice husk and 10% subsoil, by volume. tubes of 50 cm3 capacity were used as containers. among the treatments that produced seedlings of good quality at the end of the experiment for each species, the treatments with doses of 3,2 and 4,8 kg of controlled-release fertilizers by m3 of substrate were common to all species, also resulting in appropriate dimensions for field planting at a shorter time than the other treatments.
Fertiliza??o de mudas de espécies arbóreas nativas e exóticas
Moraes Neto, Sebastio Pires de;Gon?alves, José Leonardo de Moraes;Arthur Jr., José Carlos;Ducatti, Fabiane;Aguirre Jr., José Hamilton;
Revista árvore , 2003, DOI: 10.1590/S0100-67622003000200002
Abstract: increasing doses of resin-coated controlled release fertilizers (crf) were compared with conventional fertilization and treatment without fertilizer. five species of tree seedlings were used: the pioneers guazuma ulmifolia (mutambo), eucalyptus grandis and pinus caribaea var. caribaea, the early secondary peltophorum dubium ("canafístula") and the climax calycophyllum spruceanum ("mulateiro"), grown in greenhouse. the seedlings were tilled in plastic tubes of 50 cm3 capacity, receiving as substrate a mixture of 50% earthworm humus, 30% decomposed eucalypt bark, and 20% carbonized rice husk (by volume). at 125 days after sowing the seedlings of g. ulmifolia, e. grandis and p. dubium submitted to conventional fertilization presented greater growth in height and shoot dry weight (stem plus leaf), in comparison with the crf treatments. however, for these same species, root dry weight of the seedlings submitted to conventional treatment was not statistically different from that of the seedlings with the two largest doses of crf (4.28 and 6.42 kg/m3 of substrate) and the root/shoot ratio was greater for dose 6.42 kg/m3, compared with the conventional treatment for the two former species. calycophyllum spruceanum and pinus caribaea var. caribaea showed little development for all treatments at 125 days.
Produ??o de maracujazeiro-amarelo sob diferentes densidades de plantio
Andrade Júnior, Valter Carvalho de;Araújo Neto, Sebastio Elviro de;Rufini, José Carlos Moraes;Ramos, José Darlan;
Pesquisa Agropecuária Brasileira , 2003, DOI: 10.1590/S0100-204X2003001200004
Abstract: the density of plants in cultivations of yellow passion fruits is important, because it provides larger profitability in smaller areas. the objective of this research was to evaluate the effect of different planting densities on production, quality of fruit and profitability of yellow passion fruit. the experiment was installed in a commercial orchard in sant'ana farm, district of s?o tiago, mg, brazil. the experimental design was in randomized blocks with five treatments and four replications. the treatments were different planting densities: t1, 1.0 m (3,330 plants/ha); t2, 1.5 m (2,220 plants/ha); t3, 2.0 m (1,660 plants/ha); t4, 3.0 m (1,100 plants/ha) and t5, 4.0 m (830 plants/ha). the distance between the lines was 3.0 m to all the treatments. each plot was 12 m long and 3.0 m wide (36 m2). the planting was accomplished in october of 2001. the harvest began in april extending to august of 2002. the largest productivity was 11.9 ton/ha at a density of 1,841 plants/ha. planting density did not change the quality of the fruits. the largest economical efficiency was reached under the density of 1,340 plants/ha, with a profitability of r$ 1,321.92/ha.
Produ o de maracujazeiro-amarelo sob diferentes densidades de plantio
Andrade Júnior Valter Carvalho de,Araújo Neto Sebastio Elviro de,Rufini José Carlos Moraes,Ramos José Darlan
Pesquisa Agropecuária Brasileira , 2003,
Abstract: O adensamento de plantas em cultivos do maracujazeiro-amarelo é importante por propiciar maior rentabilidade em menor área. O objetivo deste trabalho foi avaliar o efeito de diferentes densidades de plantio na produ o, qualidade dos frutos e rentabilidade do maracujazeiro-amarelo. O experimento foi instalado e conduzido em pomar comercial da Fazenda Sant'ana, Município de S o Tiago, MG. O delineamento experimental utilizado foi o de blocos casualizados com cinco tratamentos e quatro repeti es. Os tratamentos constituíram-se de diferentes espa amentos na linha de plantio: T1, 1,0 m (3.330 plantas/ha); T2, 1,5 m (2.220 plantas/ha); T3, 2,0 m (1.660 plantas/ha); T4, 3,0 m (1.100 plantas/ha) e T5, 4,0 m (830 plantas/ha). O espa amento entre linhas foi de 3,0 m em todos os tratamentos. Cada parcela foi constituída de 12 m de comprimento por 3,0 m de largura (36 m2). O plantio foi realizado em outubro de 2001, e a colheita, a partir de abril, estendendo-se até agosto de 2002. A maior produtividade foi estimada em 11,9 t/ha na densidade de 1.841 plantas/ha. O adensamento n o altera a qualidade do fruto. A máxima eficiência econ mica foi alcan ada na densidade de 1.340 plantas/ha, com rentabilidade de R$ 1.321,92/ha.
Produ??o da tangerineira 'ponkan' após poda de recupera??o
Mendon?a, Vander;Ramos, José Darlan;Araújo Neto, Sebastio Elviro de;Rufini, José Carlos Moraes;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000100015
Abstract: this research aimed to test top pruning effect on the lowering of plant canopy, pruning the lower canopy on the recover of 12 years old 'ponkan' tangerine tree, 4 meters height, 6 x 4 spaced and grafted on 'cravo' lemon rootstock. this experiment was carried out at vito crincoli's farm in perd?es, mg. it was carried out under randomized plots in a factorial scheme of 4x2, top pruning (without pruning, pruning at 3.0; 2.5 and 2.0 m) and skirt pruning (with and without pruning) with 4 replications. plot size was composed by three plants. heavy pruning of the top canopy lowered the first tree yield, however, and in the begining of the second year, the plants showed a very good recover. the same behavior was seem for the third harvest when several kinds of top pruning did not differ in the yield. skirt pruning treatment was superior to that without any pruning.
Qualidade de frutos da tangerina 'Ponkan' após poda de recupera??o
Mendon?a, Vander;Ramos, José Darlan;Rufini, José Carlos Moraes;Araújo Neto, Sebastio Elviro de;Rossi, Erick Pretti;
Ciência e Agrotecnologia , 2006, DOI: 10.1590/S1413-70542006000200012
Abstract: this research aimed to test top pruning effect on lowering the top canopy and pruning the lower part of the plant on the recovering of 12 years old 'ponkan' tangerine tree. plants were four meters height, 6x4 spacing, grafted on 'cravo' lemon tree. this experiment was carried out at vito crincoli' s farm in perd?es, mg, brazil . it was used a randomized block experimental design in a factorial scheme of 4x2, top pruning (without pruning, pruning at 3.0; 2.5 and 2.0m from soil level) and circumference pruning (with and without pruning) with four replications. the useful plot was constituted of three tangerine plants. after third year of treatment plants that had been under more severe pruning gave higher fruit weight. indicating the used of pruning to recover fruit quality.
Florística da vegeta??o arbustivo - arbórea colonizadora de uma área degradada por minera??o de caulim, em Brás Pires, MG
Araújo, Fernanda Squizzatto de;Martins, Sebastio Venancio;Meira Neto, Jo?o Augusto Alves;Lani, Jo?o Luiz;Pires, Ismael Eleotério;
Revista árvore , 2005, DOI: 10.1590/S0100-67622005000600018
Abstract: this study aimed to analyze the floristic composition of shrub-tree vegetation colonizing an area degraded by kaolin mining in brás pires, mg, compare it with other forest fragments and characterize ecological aspects of species and soil of the area. the sampled area was 0.5 ha subdivided in 50 grid plots of 10x10 meters each. all individuals included had cap equal or larger than 10cm. the floristic composition is the result of the sampled area plus species collected outside of it. a total of 64 species was obtained, distributed in 50 genera and 30 families. the families with the greater number of species were leguminosae (11), annonaceae (5), lauraceae e melastomataceae (4), while the richest genus was machaerium (3). the soil analysis revealed that it had not impaired the vegetation colonization. the main dispersal syndrome was zoochorous, showing the importance of remnant individuals, surroundings forest fragments and its fauna. the greatest floristic similarity occurred in cruzeiro, sp, being both areas at the same successional stage.
Estrutura da vegeta??o arbustivo-arbórea colonizadora de uma área degradada por minera??o de caulim, Brás Pires, MG
Araújo, Fernanda Sguizzatto de;Martins, Sebastio Venancio;Meira Neto, Jo?o Augusto Alves;Lani, Jo?o Luiz;Pires, Ismael Eleotério;
Revista árvore , 2006, DOI: 10.1590/S0100-67622006000100013
Abstract: the objective of this work was to study the phytosociological structure of a shrub and tree vegetation colonizing an area degraded by kaolin mining in brás pires, se, brazil, in order to select and indicate more adapted species for restoration of similar degraded areas. the phytosociological sampling used 50 grid with 10x10m plots each totalizing 0.5ha. the survey included all individuals with breast high > 10cm circumference. a total of 1010 sampled individuals belonged to 47 species distributed into 39 genera and 23 families. the highest vi values were obtained for piptadenia gonoacantha, luehea grandiflora, anadenanthera peregrina, cecropia glaziovii, cecropia hololeuca e xylopia brasiliensis. the analysis of trunk diameter distribution showed that the community was in a stage of full regeneration with individuals distributed over all diameter classes.
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