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Search Results: 1 - 10 of 176808 matches for " Nilton de Brito Cavalcanti nbc Cavalcanti "
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EFFECT OF DIFFERENT SUBSTRATES ON EMERGENCE THE GROWTH SEEDLINGS OF JACK BEAN (Canavalia ensiformes L.)
Nilton de Brito Cavalcanti nbc Cavalcanti
Engenharia Ambiental : Pesquisa e Tecnologia , 2011,
Abstract: We tested different substrates, in order to verify that provide better conditions for germination, seedling emergence and the vegetative development of jack bean (Canavalia ensiformis L.). We evaluated 30, 60, 90 and 120 days after sowing, the percentage of seedling emergence (G) and the speed of germination of seedlings (GSI) and the growth of seedling. The statistical design was randomized blocks with six substrates (sand), (soil), (sand + soil), (soil + cattle manure), (sand +cattle manure) and (sand + soil + cattle manure). Evaluations were made of seed emergence and speed of germination of seedlings. There were significant differences in percentages among treatments in the emergency period. Substrates composed of sand, soil and manure had the highest rates of emergence and emergence speed index. Regarding the development of the root system of Canavalia ensiformis (Jack bean), it was found that the substrate with the soil, all plants had the highest values in terms of length. The height growth of Canavalia ensiformis was influenced by the different substrates analyzed. Among the substrates, the better the (sand + soil + cattle manure), which increased the growth of seedlings.
Efeito do Escoamento da água de Chuva em Diferentes Coberturas
Nilton de Brito Cavalcanti
Engenharia Ambiental : Pesquisa e Tecnologia , 2010,
Abstract: Systems to capture rain water used by farmers in the Brazilian semiarid region have different values of the runoff coefficient, which may be responsible for loss of volume of water significant because of the irregularity of the catchment areas, so it is necessary studies that might indicate the best systems to capture rainwater in the region. This study aimed to test different catchment areas in order to obtain results that indicate which area best suited for use in the Brazilian semiarid region. We tested four types of catchment area: coverage of mortar cement and sand, covering of ceramic tile, cement tile coverage, and coverage of polyethylene. The results indicate that the highest rates of runoff occurred in areas covered with roofing cement and plastic polyethylene.
Effect of Different Substrates on Emergence the Growth Seedlings of JAMBOL O (Syzygium jambolanum Lam.)
Nilton de Brito Cavalcanti
Engenharia Ambiental : Pesquisa e Tecnologia , 2010,
Abstract: Foram testados diferentes substratos, com o objetivo de verificar os que proporcionassem melhores condi es para a germina o e emergência de plantulas de jambol o (Syzygium jambolanum Lam). Avaliaram-se aos 35 dias após a semeadura, a percentagem de emergência das plantulas (G), o índice de velocidade de germina o das plantulas (IVG) e o crescimento das plantulas. O delineamento estatístico utilizado foi de blocos ao acaso, com seis substratos (areia, solo, areia + solo, solo + esterco de bovino, areia + esterco de bovino e areia + solo + esterco de bovino). Foram realizadas avalia es de emergência das sementes, do índice de velocidade de germina o das plantulas e do crescimento. Verificaram-se diferen as significativas nos percentuais de emergência entre os tratamentos no período de observa o. Os substratos compostos com areia, solo e esterco apresentaram as maiores taxas de emergência e índice de velocidade de emergência. Em rela o ao desenvolvimento do sistema radicular do jambol o, verificou-se que no substrato com solo, todas as plantas apresentaram os maiores valores em termos de comprimento. O crescimento em altura do jambol o foi influenciado pelos diferentes substratos analisados. Entre os substratos, o melhor foi o com areia + solo + esterco de bovino, que provocou maior crescimento das plantulas.
Efeitos de Diferentes Substratos no Desenvolvimento da Juremina (Desmanthus virgatus L Willd)
Nilton de Brito Cavalcanti
Engenharia Ambiental : Pesquisa e Tecnologia , 2010,
Abstract: Different rooting average were tested to identify those would provide the best conditions for growth the jureminha (Desmanthus virgatus l. willd). Five different compositions for rooting average were (sand; soil; sand + soil; sand + manure; sand + soil + manure). The study was carried out from november of 2006 to december of 2007, in an area room temperature at Embrapa Semi-Arid, Petrolina, PE, Brazil. The substrate composed with sand + + soil rooting medium showing the highest rates. In relation to the development of the system to radicular of the jureminha verified that in treatment 3 (sand+ soil) all had presented the biggest values in length terms. The growth in height of the plants was influenced by different analyzed substrata. Between substrate, optimum sand + soil was with ground.
Effects of different substrats on the growth of the aroeira-vermelha (Schinus terebinthifolius Raddi)
Nilton de Brito Cavalcanti,Luiza Teixeira de Lima Brito
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: Different rooting average were tested to identify those whch would provide the best conditions for growth of shedding the aroeira-vermelha (schinus terebinthifolius raddi). five different compositions for rooting average were (sand; soil; sand + soil; sand + cattle manure; sand + soil + cattle manure) the study was carried out from september of 2007 to december of 2008, in an area room temperature at embrapa semi-arid, petrolina, pe, brazil. the substrate composed with sand + cattle manure and sand + soil + cattle manure rooting medium showing the highest rates. in relation to the development of the system to radicular of the shedding aroeira-vermelha was verified that in treatment 5 (sand + soil + cattle manure) all had presented the biggest values in length terms. the growth in height of the shedding was influenced by different analyzed substrata. between substrate, optimum sand + cattle manure was with ground.
O Crescimento de Plantas de Imbuzeiro (Spondias tuberosa ARRUDA) no semiárido de Pernambuco
Nilton de Brito Cavalcanti,Geraldo Milanez Resende,Luiza Teixeira Brito
Engenharia Ambiental : Pesquisa e Tecnologia , 2010,
Abstract: The objective of this study was to determine the growth the imbu (Spondias tuberosa Arruda) is a native plants of the semi-arid region of the Brazilian Northeast, Brazil, and the 10 years. The study was conducted in the Caatinga Experimental Station, Embrapa Semi-Arid, Petrolina, and Pernambuco State, Brazil during the 1997 and 2007. The average height of the plants in the first one and the tenth year had been of 70.81 and 258.27 cm. The basal diameter and the circumference of stalk to the level of the ground had been, on average, of 10.39 and 35.26 cm, respectively. The plants had presented horizontal roots of 436.17 cm and vertical of 186.45 cm.
Natural regeneration and dispersion of seeds of the imbuzeiro (spondias tuberosa Arruda) in the Pernambuco hinterland, Brazil
Nilton de Brito Cavalcanti,Geraldo Milanez de Resende,Luiza Teixeira de Lima Brito
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: This work had as objective to evaluate the dispersion of the seeds of imbuzeiro (Spondias tuberosa Arruda) for the animals and the survival of plants in caatinga. The work was carried out in the period from October of 2002 to December of 2005 in degraded and native area of caatinga. They had been selected to perhaps, 16 plants of imbuzeiro, being eight plants in each area. In each plant twelve transectos of 1 m of width for 25 m had been demarcated, where the seeds found in the young ground and plants. The used experimental delineation was block-type to perhaps in factorial project 5 x 2, with four repetitions. 1003.5 seeds.m-2 had been, on average, in the first units you show of caatinga native and in caatinga degraded, it was observed, on average, 31.25 seeds m-2. In the native area of caatinga they had been registered 2.5 plants m-2, on average, in the first units you show during the rainy station. The dispersive ones of the seeds observed in the native area of catinga had been the deer-catingueiro (Mazama gouazoubira), the cotia (Dasyprocta cf. prymnolopha), caititu (Tayassu tajacu), the fox (Dusicyon thous), the teiú (Tupinambis merianae), the tatu-peba (Euphractus sexcinctus) of the guará (Procyon cancrivous) the area of caatinga e na área de caatinga degraded the sheep (Capra hircus).Key-words: rain, tree, seedlings, emergency, germination.
Injuries caused by animals to young imbuzeiro (Spondias tuberosa Arruda) plants in native and degraded caatinga areas
Nilton de Brito Cavalcanti,Geraldo Milanez de Resende,Luiza Teixeira de Lima Brito
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: This study had the objective of evaluating the injuries caused by animals to young imbu tree (Spondias tuberosa Arruda) plants in native and degraded Caatinga areas, between the years 1997 and 2002. One thousand imbu tree scions were planted, being 500 in a degraded Caatinga area at the community of Alto do Angico, Petrolina-PE, and 500 in a native Caatinga area at the Caatinga Experimental Station of Embrapa Tropical Semi-Arid, Petrolina-PE. At every 30 days after having planted the scions, data were collected regarding survival and injuries caused by animals to the plants. The results showed that goats are responsible for the reduction on survival rates and for the slow development of young imbu tree in the degraded Caatinga area. In the native Caatinga area, of the collared peccary (Tayassu tajacu) and armadillo (Euphractus sexcinctus) caused the highest injury levels.
Effects of differents substrate in the growth of the mam ozinho-de-veado (Jacaratia corumbensis O. kuntze)
Nilton de Brito Cavalcanti,Geraldo Milanez Resende,Luiza Teixeira de Lima Brito
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: Growth of mam ozinho-de-veado (Jacaratia corumbensis O. Kuntze) in different rooting media were tested with the objective of detecting those that provided better conditions for growth of the mam ozinho. It was used six different compositions for rooting (sands, soil, sands + soil, soil + cattle manure, sands + cattle manure, and sands + soil + cattle manure). The work was accomplished in the period from september of 2007 to December of 2008, in area under screen shadow with reduction of light of 50%, in temperature it sets in Semi-arid Embrapa in Petrolina - PE. The evaluations of growth, height and diameter of the plant; length, diameter and weight of the rooting. A difference was verified in the growth rate of the 365 days, being the rooting with sands + soil + cattle manure, where they happened the largest growth rates. The rooting, the best was it composed with soil + cattle manure, where to the 365 days, it promoted larger growth in mass, height and diameter of the plant.
SUPPLEMENTAL IRRIGATION THE IMBU TREE (Spondias tuberosa Arruda)
Nilton de Brito Cavalcanti,Geraldo Milanez Resende,Luiza Teixeira Lima Brito
Engenharia Ambiental : Pesquisa e Tecnologia , 2011,
Abstract: The imbu (Spondias tuberosa Arruda) is a native tree of the semi-arid region of the Brazilian Northeast, whose fruit is of great importance for complementing the family income of small farmers. However, its reproductive cycle is still not very well known, especially a function to irrigation supplemental. This work was carried out to help follow the evolution of the reproductive cycle of the imbu, from the emission of the beginning of the floral bud to the ripening of the depending on the application of irrigation. This work was carried the Caatinga Experimental Station, Semiarid Embrapa of 8 plants. In each plant, 100 branches were randomly chosen from different parts of the crown and labelled for phenological data annotation. In the data obtained were determined averages standard deviations and coefficients of variation. The application of supplemental irrigation in imbuzeiro plants can significantly contribute to increase in fruit production.
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