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PROBABILIDADE DE OCORRÊNCIA DOS ATRIBUTOS QUÍMICOS EM UM LATOSSOLO SOB PLANTIO DIRETO Full text
2015
MÁRCIO JOSÉ DIAS | SUELI MARTINS FREITAS ALVES | ELTON FIALHO DOS REIS | DANILO GOMES DE OLIVEIRA
This study aimed to evaluate the spatial variability using the indicative kriging method in pre- paring probability maps of the occurrence of soil chemical properties and productivity. Data were collected in a ground area planted with soybeans in a no - till system, with a regular grid sampling of 60 x 60 m, totaling 124 points. At each point were deformed soil samples collected to determine the chemical attributes (pH, Potassi- um, Calcium, Magnesium and Aluminum exchangeable, available phosphorus, zinc, potential acidity, soil or- ganic matter, cation exchange capacity and base saturation). To determine productivity were collected all the plants within 1 m ² of the sample point. Data were categorized into binary codes on the amounts presented in the recommendation for the use of lime and fertilizer. Later it used the geostatistical analysis and attributes potassi- um, phosphorus, magnesium and base saturation that presented spatial dependence underwent kriging as inter- polation technique. Occurrence probability maps were drawn of the evaluated attributes presented spatial de- pendence. The probabilistic maps showed that the central area evaluated was more likely to need correction to the levels of potassium attributes, phosphorus, magnesium and base saturation. From the analysis of the maps, you can detect nutrient deficient areas and making corrections and use of localized management techniques, minimizing operating costs and economic that culture.
Show more [+] Less [-]ADUBAÇÃO E ORDEM DO RACEMO NO DESEMPENHO AGRONÔMICO DA MAMONEIRA BRS NORDESTINA Full text
2015
JOSELY DANTAS FERNANDES | LUCIA HELENA GARÓFALO CHAVES | JOSÉ PIRES DANTAS | JOSÉ RODRIGUES PACÍFICO DA SILVA
Castor produces racemes primary, secondary, tertiary, among others, whose contributions to the overall productivity differ. In this context, the aim was to evaluate the agronomic characteristics and to deter-mine the influence of the order of racemes and nutrient sources on yield of castor bean. Thus, under field con-ditions, in the municipality of Remigio, Paraíba State, an experiment with BRS Nordestina cultivar was carried out in randomized blocks design arranged in 5 (different sources of organic manure: without organic manure, compost, compost enriched with rock powders and manure and mineral complete) x 4 (orders of racemes pri-mary, secondary, tertiary and quaternary) factorial experiment, with four replications. During the experiment, plant height and insertion of racemes were evaluated, length and number of racemes, early blooming and matu-ration of racemes. After harvesting, the following variables were determined: mass of racemes, number of grains per plant, yield, weight of hundred grains, length and width of the grains and the contribution of differ-ent orders of racemes in total yield. The growth of castor bean increased with the fertilizing, especially for or-ganic compounds. The first inflorescences were emitted in castor bean plants fertilized organically. The mass of racemes, the number of grains per plant and productivity were higher in racemes of secondary and tertiary orders. The length and width of the grains was higher in primary racemes. The highest yields were obtained with the use of organic sources.
Show more [+] Less [-]PERFIL HEMATOLÓGICO DE TILÁPIAS-DO-NILO ALIMENTADAS COM DIE-TAS CONTENDO DIFERENTES LIPÍDEOS E ESTIMULADAS POR BAIXA TEMPERATURA Full text
2015
DANIEL DE MAGALHÃES ARAUJO | ADEMIR CALVO FERNANDES JUNIOR | CAROLINE PELEGRINA TEIXEIRA | LUIZ EDIVALDO PEZZATO | MARGARIDA MARIA BARROS
The goal of this paper was to determine the effects of seven diets with differents fatty acids sources in hematology of Nile tilapia before and after cold stimulus. Seven diets, with 3% of fatty acid source, were formulated: soybean oil (OS); fish oil (OP); beef tallow (SB) and mixtures of OS+OP; OS+SB; OP+SB e OS+OP+SB. Fish (112 male of Nile tilapia of 30,0 ± 2,65g) were totally randomly distributed, with four repli-cates, into 28 plastic aquaria (40 L; 4 fish per aquarium). Fish were fed four times per day for 35 days. At 35th day and also after seven days cold stimulus blood was collected and the profile hematological was evaluated. Leucocytes numbers were reduced in fish fed a SB and fish oil combination diet and were highest in fish fed SB diet before cold stimulus. Plasma protein was reduced in fish fed soybean oil diets and highest in fishes fed a combination of soybean oil, fish oil and SB diets. Anything fatty acids source promotes effective changes in fish health and cold tolerance promotion. Cold don’t drastically reduced fish general health status.
Show more [+] Less [-]CHARACTERIZATION MORPHOAGRONOMIC OF GUAVA FRUITS UNDER DIFFERENT WATER DEPTHS AND NITROGEN FERTLIZATION LEVELS Full text
2015
JOSÉ DANTAS NETO | AARON DE SOUSA ALVES | CARLOS ALBERTO VIEIRA DE AZEVEDO | PEDRO DANTAS FERNANDES | VERA LÚCIA ANTUNES DE LIMA
CHARACTERIZATION MORPHOAGRONOMIC OF GUAVA FRUITS UNDER DIFFERENT WATER DEPTHS AND NITROGEN FERTLIZATION LEVELS Full text
2015
JOSÉ DANTAS NETO | AARON DE SOUSA ALVES | CARLOS ALBERTO VIEIRA DE AZEVEDO | PEDRO DANTAS FERNANDES | VERA LÚCIA ANTUNES DE LIMA
– The objective of this study was to evaluate the effects of different water depths and nitrogen fertilization levels applied by fertigation on the physical attributes of guava fruits cv. Paluma. The study was carried out taking into account factors water depths (1144, 1465, 1785 and 2106 mm) and nitrogen fertilization levels (50, 100, 150 and 200 kg ha-1 ). The water depths 1730 and 1750 mm increased production and the average weight of guava fruit in, respectively, 25.1 and 31.6%. The applications 178 and 152 kg N ha-1 increased at 67.1% in the production of fruits and 16.3% the average fruit weight. The combined application of 150 kg N ha-1 and 1789 mm of water amounted to 63.3% of the total weight of fruit. The equatorial diameter of the fruit was influenced by individual water depths applied evidencing an increase of up to 26.8%. Already combinations 200 kg N ha-1 and 1746 mm of water increased the longitudinal diameter of the fruits by 18.77%. The application of water depth to 1144 mm, associated with 143 kg N ha-1 gave index of the most satisfactory way to guava fruit.
Show more [+] Less [-]CHARACTERIZATION MORPHOAGRONOMIC OF GUAVA FRUITS UNDER DIFFERENT WATER DEPTHS AND NITROGEN FERTLIZATION LEVELS Full text
2015
DANTAS NETO, JOSÉ | ALVES, AARON DE SOUSA | AZEVEDO, CARLOS ALBERTO VIEIRA DE | FERNANDES, PEDRO DANTAS | LIMA, VERA LÚCIA ANTUNES DE
ABSTRACT: The objective of this study was to evaluate the effects of different water depths and nitrogen fertilization levels applied by fertigation on the physical attributes of guava fruits cv. Paluma. The study was carried out taking into account factors water depths (1144, 1465, 1785 and 2106 mm) and nitrogen fertilization levels (50, 100, 150 and 200 kg ha-1). The water depths 1730 and 1750 mm increased production and the average weight of guava fruit in, respectively, 25.1 and 31.6%. The applications 178 and 152 kg N ha-1 increased at 67.1% in the production of fruits and 16.3% the average fruit weight. The combined application of 150 kg N ha-1 and 1789 mm of water amounted to 63.3% of the total weight of fruit. The equatorial diameter of the fruit was influenced by individual water depths applied evidencing an increase of up to 26.8%. Already combinations 200 kg N ha-1 and 1746 mm of water increased the longitudinal diameter of the fruits by 18.77%. The application of water depth to 1144 mm, associated with 143 kg N ha-1 gave index of the most satisfactory way to guava fruit. | RESUMO: Objetivou-se com este estudo avaliar os efeitos de diferentes lâminas totais de água e níveis de adubação nitrogenada, aplicados via fertirrigação, sobre os atributos físicos de frutos de goiabeiras cv. Paluma. O estudo foi conduzido levando-se em consideração os fatores lâminas de água (1144; 1465; 1785 e 2106 mm) e doses de nitrogênio (50; 100; 150 e 200 kg ha-1). As lâminas de água 1.730 e 1.750 mm aumentaram a produção e o peso médio de frutos de goiabeira em, respectivamente, 25,1 e 31,6%, já as aplicações de 178 e 152 kg de N ha-1elevaram em 67,1% a produção de frutos e em 16,3% o peso médio de frutos. As aplicações combinadas de 150 kg de N ha-1 e 1.789 mm de água elevaram em 63,3% o peso total dos frutos. O diâmetro equatorial dos frutos foi influenciado isoladamente pelas lâminas de água aplicadas constatando-se um aumento de até 26,8%. Já as combinações 200 kg de N ha-1 e 1.746 mm de água incrementaram o diâmetro longitudinal dos frutos em 18,77%. A aplicação da lâmina de água correspondente a 1.144 mm, associada a 143 kg de N ha-1 conferiram índice de forma mais satisfatório aos frutos de goiabeira.
Show more [+] Less [-]DINÂMICA DE INÓCULOS E DOENÇAS EM VIDEIRA SOB SISTEMA CONVENCIONAL E PROTEGIDO Full text
2015
DIÓGENES DA CRUZ BATISTA | MARIA ANGÉLICA GUIMARÃES BARBOSA | MAGNA SOELMA BESERRA DE MOURA | JOSÉ BARBOSA DOS ANJOS
The effect of the covered and conventional cultivation of grapevine (cv. Superior Seedless) on the aerial dispersion of pathogen inoculum and dynamic of diseases was investigated in two-year (2009 and 2010) and period similar to the year. The experiment was conducted at the experimental station of Embrapa semiarid. The traps were maintained at 0.5 meters above the canopy of the grapevine, and the samples taken every 24 hours with the exchange of slides 9:00 a.m. Greater dispersion of pathogens (Plasmopara viticola, Phakopsora euvitis, Alternaria alternata) and intensity of diseases (downy mildew, rust, and bacterial canker) were detected in grapevines under conventional cultivation. The aerial dispersal of the fungus Lasiodiplodia theobromae was similar under grapevine covered and uncovered.
Show more [+] Less [-]COMPOSIÇÃO QUÍMICA E DIGESTIBILIDADE DA PORNUNÇA SOB DUAS FONTES DE ADUBAÇÃO ORGÂNICA E CORTES Full text
2015
FRANCISCO HUGO HERMÓGENES DE ALENCAR | DIVAN SOARES DA SILVA | ALBERÍCIO PEREIRA DE ANDRADE | MARIA SOCORRO DE SOUZA CARNEIRO | JOSÉ VALMIR FEITOSA
COMPOSIÇÃO QUÍMICA E DIGESTIBILIDADE DA PORNUNÇA SOB DUAS FONTES DE ADUBAÇÃO ORGÂNICA E CORTES Full text
2015
FRANCISCO HUGO HERMÓGENES DE ALENCAR | DIVAN SOARES DA SILVA | ALBERÍCIO PEREIRA DE ANDRADE | MARIA SOCORRO DE SOUZA CARNEIRO | JOSÉ VALMIR FEITOSA
The objective of this Study was to evaluate the effect of organic fertilizer and cuts on the chemical composition and in vitro digestibility of the air pornunça biomass. The experimental design of randomized blocks in a split plot with four courts, two fertilization, and four replications. The cuts were made in February, June and October 2011 and February 2012. The fertilizer was with cattle and sheep manure, applied in May 2010 and March 2011 in the amount of 20 Mg ha-1 . We evaluated the structural components of the shoot, such as leaf blade, petiole, branch and full (leaf blade and petiole more branch) of pornunça. The manure beef and lamb did not influence (P>0.05) the chemical composition of the structural components of the shoot. Differences were noted between the cuts, except for dry matter (DM) of the leaf blade and the full component of ether extract (EE), neutral detergent fiber (NDF), acid detergent fiber (ADF) and hemicellulose (HC). There was a significant (P<0.05) for the in vitro digestibility of the MS of the structural components in different cuts, with the highest digestibility for structural components in the cut made in February 2011. Lower crude protein was found in the petiole and components branch. The pornunça should be considered as an alternative food for animals according to the chemical composition of the values presented in this study, with the leaf surface of the plant part that presents the best nutritional value.
Show more [+] Less [-]COMPOSIÇÃO QUÍMICA E DIGESTIBILIDADE DA PORNUNÇA SOB DUAS FONTES DE ADUBAÇÃO ORGÂNICA E CORTES Full text
2015
ALENCAR, FRANCISCO HUGO HERMÓGENES DE | SILVA, DIVAN SOARES DA | ANDRADE, ALBERÍCIO PEREIRA DE | CARNEIRO, MARIA SOCORRO DE SOUZA | FEITOSA, JOSÉ VALMIR
ABSTRACT: The objective of this Study was to evaluate the effect of organic fertilizer and cuts on the chemical composition and in vitro digestibility of the air pornunça biomass. The experimental design of randomized blocks in a split plot with four courts, two fertilization, and four replications. The cuts were made in February, June and October 2011 and February 2012. The fertilizer was with cattle and sheep manure, applied in May 2010 and March 2011 in the amount of 20 Mg ha-1. We evaluated the structural components of the shoot, such as leaf blade, petiole, branch and full (leaf blade and petiole more branch) of pornunça. The manure beef and lamb did not influence (P>0.05) the chemical composition of the structural components of the shoot. Differences were noted between the cuts, except for dry matter (DM) of the leaf blade and the full component of ether extract (EE), neutral detergent fiber (NDF), acid detergent fiber (ADF) and hemicellulose (HC). There was a significant (P<0.05) for the in vitro digestibility of the MS of the structural components in different cuts, with the highest digestibility for structural components in the cut made in February 2011. Lower crude protein was found in the petiole and components branch. The pornunça should be considered as an alternative food for animals according to the chemical composition of the values presented in this study, with the leaf surface of the plant part that presents the best nutritional value. | RESUMO: O objetivo do presente trabalho foi avaliar o efeito da adubação orgânica e cortes sobre a composição química e a digestibilidade in vitro da fitomassa aérea da pornunça. Foi utilizado o delineamento experimental de blocos casualizados em parcelas subdivididas com quatro cortes, duas adubações e quatro repetições. Os cortes foram realizados nos meses de fevereiro, junho e outubro de 2011 e fevereiro de 2012. A adubação foi com esterco bovino e ovino aplicados nos meses de maio de 2010 e março de 2011 na quantidade de 20 Mg ha-1. Foram avaliados os componentes estruturais da parte aérea, tais como limbo foliar, pecíolo, ramo e completo (limbo foliar mais pecíolo e ramo) da pornunça. Os estercos bovino e ovino não influenciaram (P>0,05) a composição química dos componentes estruturais da parte aérea. Diferenças foram verificadas entre os cortes, exceto para a matéria seca (MS) do limbo foliar e do componente completo de extrato etéreo (EE), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA) e hemicelulose (HC). Houve efeito (P<0,05) para a digestibilidade in vitro da MS dos componentes estruturais nos diferentes cortes, sendo a maior digestibilidade para os componentes estruturais no corte realizado em fevereiro de 2011. Menores teores de proteína bruta foram encontrados nos componentes pecíolo e ramo. A pornunça deve ser considerada como alternativa alimentar para os animais em função dos valores da composição química apresentada neste estudo, sendo o limbo foliar a parte da planta que apresenta o melhor valor nutritivo.
Show more [+] Less [-]DESEMPENHO E RESPOSTAS ADAPTATIVAS DE NOVILHOS ANGUS X NELORE EM CLIMA TROPICAL Full text
2015
DÉBORA ANDRÉA EVANGELISTA FAÇANHA | JACINARA HODY GURGEL MORAIS LEITE | MAGDA MARIA GUILHERMINO | ANGELA MARIA VASCONCELOS | CAROLINA OUTEDA LACUESTA
The aim of this study was to evaluate the performance and the adaptive profile of de 25 steers ¶ Angus x μ Nelore (RED) and 25 steers ´ Angus x ´ Nelore (NEL), during the milking and the fattening phas-es, in an intensive system, at Rio Grande do Norte state. The body weights, anterior and posterior high, as well as the thoracic perimeter, were monthly measured to evaluate the growth pattern. As adaptive responses were registered rectal temperature and hair coat traits. The statistical analyzes were based in the minimum square method, utilized mixed models. At the beginning of the trial both of genetic groups presented the same body weight (103,03kg) and from the second sampling on the animals RED were superior in comparison with the NEL and showed higher body weight at the weaning (181,60kg RED e 158,57kg NEL) and the 13th months. On the other hand, there was no difference between the genetic groups for the final weight (slaughter body weight). There were differences in all the performance characteristics analyzed. The RED group was superior in relation to the NEL group. The hair coat characteristics didn't differ between the genetic groups, except the hair coat length, which was higher in the RED animals. We concluded that both of genetic groups were adapted to tropical weather conditions, nevertheless, despite the better performance showed by the animals RED during the suckling and the fattening phases, the NEL animal may be indicated because of the similar slaughter body weight.
Show more [+] Less [-]EFFICIENCY OF SIMPLE SUPER PHOSPHATE IN THE VETIVER GRASS DEVELOPMENT SUBJECTED TO SOIL BIOENGINEERING Full text
2015
RENISSON NEPONUCENO DE ARAÚJO FILHO | FRANCISCO SANDRO RODRIGUES HOLANDA | IGHOR DIAQUINO MATIAS SANTANA | TIAGO DE OLIVEIRA SANTOS | DÁRIO COSTA PRIMO
The development of vetiver grass (Chrysopogon zizanioides L.) has been evaluated under differ-ent levels of phosphorus on slopes of the right-side bank of the San Francisco River, in the municipality of Am-paro do São Francisco, SE. Techniques of soil bioengineering were used, characterized by the combination of vegetated riprap with stakes, seedlings of vetiver grass and sediment retainers. The experimental design was randomized blocks with five doses (0, 4, 8, 12, and 16 g pit-1 of simple superphosphate) and five replicates. The growth of vetiver seedlings were observed in periods of 30, 60, 90, e 180 days, carrying out the following pa-rameters: number of roots, external root surface, root density, root length, root length density, root and shoot dry weight, root and shoot fresh weight, and shoot length, at each evaluation period. The phosphorus doses and periods of morphological development interacted in all variables of plant biomass mentioned above. Higher superphosphate doses than 9.0 g pit-1 did not offer advantages in terms of cost-benefit for the production of vetiver seedings.
Show more [+] Less [-]CARACTERIZAÇÃO DE VERMICOMPOSTO PRODUZIDO COM PALHA DE CAFÉ E ESTERCO BOVINO Full text
2015
ALEX FAVARO NASCIMENTO | FÁBIO RIBEIRO PIRES | MARCIO PAULO CZEPAK | ADRIANO ALVES FERNANDES | JOSÉ DE OLIVEIRA RODRIGUES
CARACTERIZAÇÃO DE VERMICOMPOSTO PRODUZIDO COM PALHA DE CAFÉ E ESTERCO BOVINO Full text
2015
ALEX FAVARO NASCIMENTO | FÁBIO RIBEIRO PIRES | MARCIO PAULO CZEPAK | ADRIANO ALVES FERNANDES | JOSÉ DE OLIVEIRA RODRIGUES
Despite the knowledge that you have about the benefits of the humus of the worms or ver- micompost, there is a need to evaluate the technical feasibility of using other sources of carbon for worms. The objective was to evaluate the possibility of using straw of coffee to vermicompost production, the effects of their use on worms and on the quality of humus obtained. The evaluated treatments consisted of: (1 straw of coffee (SC) 100%; 2 SC 75% + manure (MA); 3 50% SC + 50% MA; 4 25% SC + 75% MA; 5 100% MA). The straw of coffee and the manure were incubated for 64 days to make them available to feed the worms and more 84 days to digest the substrate. The straw of coffee increased the number of worms without resulting in harmful effects. The percentage increment of the straw in the constitution of the vermicompost increased the availability of N, K, Ca and Cu, but it reduced the availability of Mg, S, Mn, P, Fe and Zn. Aiming o the medi- um supply of nutrients, the proportion of the 50% of straw of coffee and 50% of manure is designated.
Show more [+] Less [-]CARACTERIZAÇÃO DE VERMICOMPOSTO PRODUZIDO COM PALHA DE CAFÉ E ESTERCO BOVINO Full text
2015
NASCIMENTO, ALEX FAVARO | PIRES, FÁBIO RIBEIRO | CZEPAK, MARCIO PAULO | FERNANDES, ADRIANO ALVES | RODRIGUES, JOSÉ DE OLIVEIRA
ABSTRACT: Despite the knowledge that you have about the benefits of the humus of the worms or vermicompost, there is a need to evaluate the technical feasibility of using other sources of carbon for worms. The objective was to evaluate the possibility of using straw of coffee to vermicompost production, the effects of their use on worms and on the quality of humus obtained. The evaluated treatments consisted of: (1 straw of coffee (SC) 100%; 2 SC 75% + manure (MA); 3 50% SC + 50% MA; 4 25% SC + 75% MA; 5 100% MA). The straw of coffee and the manure were incubated for 64 days to make them available to feed the worms and more 84 days to digest the substrate. The straw of coffee increased the number of worms without resulting in harmful effects. The percentage increment of the straw in the constitution of the vermicompost increased the availability of N, K, Ca and Cu, but it reduced the availability of Mg, S, Mn, P, Fe and Zn. Aiming o the medium supply of nutrients, the proportion of the 50% of straw of coffee and 50% of manure is designated. | RESUMO: Apesar do conhecimento que se tem sobre os benefícios do húmus de minhoca ou vermicomposto há necessidade de se avaliar a viabilidade técnica de utilização de outras fontes de carbono para as minhocas. O objetivo do trabalho foi avaliar o efeito da palha de café associada ao esterco bovino para produção de vermicomposto sobre as minhocas e a qualidade do húmus obtido. Os tratamentos foram constituídos de: 1) Esterco Bovino 100%; 2) Palha de Café 25% + Esterco Bovino 75%; 3) Palha de Café 50% + Esterco Bovino 50%; 4) Palha de Café 75% + Esterco Bovino 25%; e 5) Palha de Café 100%. A palha de café e o esterco permaneceram incubados por 64 dias para que ficassem disponíveis para a alimentação das minhocas e mais 84 dias para digestão do substrato. A palha de café não interferiu no incremento populacional das minhocas. O aumento percentual da palha na constituição do vermicomposto aumentou a disponibilidade de N, K, Ca e Cu, mas reduziu em P, Mg, S, Mn, Fe e Zn. Visando o fornecimento médio de nutrientes, a proporção de 50% de palha de café e 50% de esterco de bovino é a mais indicada.
Show more [+] Less [-]ARMAZENAMENTO DE SEMENTES DE FLOR-DE-SEDA [Calotropis procera (AITON) W.T. AITON] Full text
2015
SÍLVIA REGINA SILVA DE OLIVEIRA-BENTO | SALVADOR BARROS TORRES | DYEME ANTONIO VIEIRA BENTO | BÁRBARA KARINE DE ALBUQUERQUE SILVA | FERNANDA JÉSSIKA CARVALHO DANTAS | VITÓRIA DA COSTA MELO
Calotropis procera (Aiton) W.T. Aiton - Apocynaceae (silk-flower) is an important species for several usages: ornamental, forage, timber, textile and medicine, that justify its study. We investigated the physiological behavior and the vigor of seeds under different storage conditions. There were performed month-ly evaluations of germination, seedling emergence, speed of emergence, seedling length and weight of seedling dry matter, during 180 days. Experimental design was completely randomized with a 6x5x3x2 factorial, using combinations of six storage periods (30, 60, 90, 120, 150 e 180 days), five moisture contents (30, 24, 18, 12 e 7%), three package types (paper bags, plastic bags and PET bottles) and two environmental conditions (chamber: 16 °C a 18 °C and laboratory: 27 °C a 30 °C, both environments with 50±5%) with four replications of 50 seeds. Data were analyzed using analysis of variance using F (p≤ 0.05) test to treatments and Tukey test for averages comparison, with polynomial regression analysis considering the storage periods. There were con-cluded that silk flower seeds presented orthodox physiological behavior; the vigor decreased when stored for 180 days; silk flower seeds with 7% moisture content are preserved efficiently in paper bags and controlled environment for 90 days.
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