Refinar búsqueda
Resultados 651-660 de 2,330
QUALIDADE DO MARACUJÁ-AMARELO COMERCIALIZADO EM RIO BRANCO, ACRE
2007
Josianny Feitosa de Farias | Lya Januária Beyruth da Silva | Sebastião Elviro de Araújo Neto | Vander Mendonça
The present work had for objective to evaluate the quality of the yellow passion fruit marketed in Rio Branco, in the state of the Acre. This research was accomplished the months of April and May of 2006. It was collected fruits of four commercial establishments, being three supermarkets (A,B,C) and a free market (D). The experimental design was in randomized complete blocks with four treatments and seven replications (collection time). The experimental unit was constituted of fifteen fruits. Medium mass of the fruit of 177,62 g, revenue of pulp of 44,44%, thickness of the peel of 6,98 mm, color of the peel varying of 2 (partially it yellows) to 3 (totally it yellows), format index of 1,16, length of 90,26 mm, diameter of 73,83 mm and class varying from 3 to 4. The appearance intern e had index of 3,87 (seeds and pulp stuck to the endocarp and 80% of the juice in the arilos). Fruits with light damages in the of peel were 91,18% and 14,96% with deep damages, classified in the category III. The fruits presented the following composition: 38 mg 100g-1 of vitamin C, 11% of total soluble solids, 5,2% of titlatable total acidity total and ratio of 2,3. The medium price to the consumer was of R$2.55/kg. It was verified by the characteristics analyzed that the establishment A, B and C presented better quality of the fruits in relation to the medium mass, diameter, length and format index. The establishment B markets fruits with larger market price (R$3.68/kg). Therefore, the passion fruit marketed in the municipal district of Rio Branco it is of low quality and prices above the production cost.
Mostrar más [+] Menos [-]TEORES DE COLESTEROL E ÁCIDOS GRAXOS EM CARNE DE CATETOS (Tayassu tajacu) CRIADOS EM CATIVEIRO
2007
Kátia Regina Freire Lopes | Frederico José Bezerra | Cynthia Monteiro Nogueirall | Raimundo Alves Barreto Júnior | Valéria Veras de Paula
The rational exploration of Tayassu tajacu, popularly known as collared peccaries, may well contribute toward diminishing the predatory hunt for this animal. The object of the present study was to evaluate the effect of sex and castration in relation to amounts of cholesterol and fatty acids found in the meat of animals raised in a captivity. A total of 12 animals was used, 8 being male (of which 4 had been castrated) and 4 female. All of the animals were given the same type of treatment and the same food. After the animals had been slaughtered, the frozen carcasses were carefully packed and sent to the laboratory responsible for examination of meats and fish which is part of the Department of Nutritional Technology of the Federal University of Ceará, in order to determine the quantity of cholesterol and fatty acids present in the meat of these animals. The amount of cholesterol in the meat of the females was less than that found in the meat of the non-castrated males. In relation to the quantity of fatty acids, the meat of the female species presented a smaller percentage of linoleic and arachid acids and a higher percentage of palmitic and palmitoleic acids when compared to both the castrated and non-castrated males. Castration appears to have had no effect on the amount of cholesterol in the meat of the male species, which presented an acceptable lipoid profile due to the presence of considerable quantities of linoleic acid and a lower percentage of cholesterol than that found in other domestic or wild species .
Mostrar más [+] Menos [-]EFICIÊNCIA FLORA E BIOMASSA DOS FRUTOS DE COQUEIRO SOB DIFERENTES LÂMINAS DE IRRIGAÇÃO E NÍVEIS SALINOS
2007
Paulo César Moura da Silva | Hugo Orlando Carvallo Guerra | Hans Raj Gheyi | Carlo Henrique de Azevedo Farias | Isolda Ramalho da Silva
The Objective this work was to evaluate the interaction of the amount and salinity of irrigation water in the floral efficiency of the Green Dwarfish coconut tree, in the area of the coastal boards of the Northeast of Brazil. The study was driven in the experimental station of EMPARN, located in Parnamirim - RN, in the period of August of 2002 to September of 2003. The studied factors were four irrigation sheets, based on the evaporation of tank class "A" (30, 60, 90 and 120% of the evaporation of the tank) and four salinity levels in the irrigation water (0,1; 5,0; 10,0 and 15,0 dS.m-1). The experimental design was entirely random with subdivided portions and regression analysis with answer surface. The number of feminine flowers grows with the increment of the irrigation amount, reducing the negative effect of the applied saline levels. The relationship flower / picked fruit reduces with the increase of the saline levels, while the interaction of the largest irrigation sheets with the smallest saline levels results in a growth in the number of flowers emitted by picked fruits. The production in biomass of the fruits grows positively with the increase of the irrigation sheets and it reduces with the increase of the saline levels and the interaction of the smaller saline levels with the largest irrigation sheets produce the largest weights of registered fruits. As reaction the water with high salinity to the plant of the coconut tree answers with the increase of the efficiency of the bloomed related the crop of fruits, in other words, it emits less flowers to obtain the same production that in appropriate conditions of cultivation.
Mostrar más [+] Menos [-]EFEITOS DA FERTIRRIGAÇÃO DE N E K2O NA DISTRIBUIÇÃO DO SISTEMA RADICULAR DA GRAVIOLEIRA
2007
Waleska Martins Eloi | Thales Vinícius de Araújo Viana | Valdemício Ferreira de Sousa | Aderson Soares de Andrade Júnior | Benito Moreira de Azevedo
The objective of this work was to evaluate the effect of different doses of nitrogen and potassium applied through the irrigation water by micro-sprinkler in the space distribution of the root system of the soursop (Annona muricata L.), through digital images. The study was conducted at the experimental field of Embrapa - North, in Teresina - PI (05th 05 ' S and 42 and 48 ' W). The treatments consisted of the combination of five doses of nitrogen (20, 120, 200, 280 and 380 kg ha-1 year-1) with five potassium doses (30, 180, 300, 420 and 570 kg ha-1 year-1), besides the witness, applied every fifteen days. The evaluation of the length of roots was accomplished being used the software SIARCS and the results were analyzed through graphs of contour and columns. The largest concentrations of roots in relation to horizontal distance happened inside of the projection of the cup. The treatment whose doses of N and K2O were 380 kg ha-1 year-1 of N and 420 kg ha-1 year-1 of K2O it presented the best vertical profile of root distribution and it was also verified that dose high of potassium they inhibit the root development.
Mostrar más [+] Menos [-]CHAVE ILUSTRADA PARA OS GÊNEROS DE BORAGINACEAE senso lato NATIVOS DO BRASIL
2007
José Iranildo Miranda de Melo | Renan da Cruz Paulino | Frank Valdomiro da Silva
This work was based on dried specimens, including types, field works (collects and observations) mainly in Brazilian Northeastern, as well as information obtained in the specialized literature. Eleven genera, and approximately 150 species, belonging to four subfamilies were recorded: Boraginoideae, Cordioideae, Ehretioideae and Heliotropioideae. An illustrated key to the recognition of the genera of Boraginaceae native from Brazil based on its floral and fruit features are presented.
Mostrar más [+] Menos [-]PRODUCTION OF TOMATO SEEDLINGS UNDER SALINE IRRIGATION
2007
Carlos Alberto Brasiliano Campos | Pedro Dantas Fernandes | Hans Raj Gheyi | Flávio Favaro Blanco
Processing tomato is the most important vegetable crop of the Brazilian agribusiness and few researches have been conducted to evaluate the tolerance of this crop to saline stress. In this study, the effects of five levels of salinity of the irrigation water (1, 2, 3, 4 and 5 dS m-1) and three equivalent proportions of Na:Ca:Mg (1:1:0.5, 4:1:0.5 and 7:1:0.5) were tested on the emergence and vigor of processing tomato, cultivar IPA 6. Seeds were sowed in expanded polystyrene tray (128 cells) and each tray received 1 L of water after sowing. The trays were piled and, four days after sowing, they were placed on suspended supports in a greenhouse. Irrigation was accomplished daily from the fifth day after sowing. Only dry weight of shoot and root was affected by sodium proportions, while linear reductions of the speed of emergence, stem length and the dry weight of shoot and root were observed with increasing salinity. Root was more affected than shoot by salinity and relative growth ratioincreased with salinity levels on the 14-21 days after sowing period, indicating that the crop showed a certain increase of salinity tolerance with the time of exposure to salts.
Mostrar más [+] Menos [-]AVALIAÇÃO DE MÉTODOS DE NECESSIDADE DE CALAGEM NO BRASIL
2007
Marcela Campanharo | Mario de Andrade Lira Junior | Clístenes Williams Araújo do Nascimento | Fernando José Freire | José Valdemir Tenório da Costa
Considering soil acidity importance under tropical conditions and the existence of several limingrequirement evaluation methods, this work aimed to evaluate liming requirement methods in use in Brazil. Experimental units were plastic cups with 0, 1, 2, 3 and 4 t ha-1 of CaCO3, in a factorial arrangement with three soil classes, under a block design with five replicates. pH readings were obtained each seven days for eight weeks. Regression analysis and model selection was done for pH, Al3+ and Ca2++Mg2+, considering CaCO3 levels as independent variables, for each soil. Obtained equations were used to estimate pH, Al3+ and Ca2++Mg2+ which would be obtained if liming was conducted according to the liming requirement methods. Data estimated for each soil was submitted to analysis of variance, with each soil being a replicate. Base saturation, exchangeable aluminum neutralization, or exchangeable calcium and magnesium content increase had the best results for pH. These methods achieved liming goals, while the remaining resulted in pH below desirable.
Mostrar más [+] Menos [-]BIOMASSA MICROBIANA EM ÁREAS EM PROCESSO DE RESTAURAÇÃO NA RESERVA BIOLÓGICA DE POÇO DAS ANTAS, RJ
2007
Luiz Fernando Duarte de Moraes | Eduardo Francia Carneiro Campelo | Maria Elizabeth Fernandes Correia | Marcos Gervásio Pereira
Soil microbial biomass (SMB) is considered a significant nutrient pool in soils, that may be associated to changes in the vegetation cover. In order to estimated the SMB C and N contents, six treatments were installed in mature forests (F), 8-year-old mixed plantations of indigenous tree species (P), and abandoned pastures (G), at both the flooding (V) and the sloping (M) areas of the Poço das Antas Biological Reserve, an Atlantic Rain Forest remnant of ca. 5,200ha. Soil samples were collected at the layers 0-2.5cm, and were incubated to also measure soil respiration rates. There was no significant difference among the treatments for SMB-C content and for the soil respiration rate, but the plantation on the flooding area showed a higher value for SMB-N than that on the sloping area plantation. Higher values of metabolic quotient (qCO2) and of Cmic:Nmic ratio suggest the plantation on the sloping area has a lower stability than the plantation on the flooding area.
Mostrar más [+] Menos [-]CARACTERIZAÇÃO FÍSICO-QUÍMICA DAS POLPAS DOS RAMOS DO MANDACARU
2007
Francisca Marta Nascimento de Oliveira | Rossana Maria Feitosa de Figueirêdo | Alexandre José de Melo Queiroz | Cleandro Alves de Almeida
The Cereus jamacaru it is a cactaceae plant very used in food of cows, caprines and sheeplike in the semi-arid of Brazilian Northeastern. The pH, soluble solids, ashes, total solids, moisture, insoluble solids and the yield of Cereus jamacaru samples were determined. Were utilized the bunch of an only plant, this went separates and processes as three types of samples; pulp of the storaging pancreas of water (central stalk), pulp of vascular cylinder of end bunch and of half of bunch (part between the central stalk and the epicarp of the plant). The resultswere statiscally evaluated according to completely randomize design, from which were verified that had significant difference among the samples as to the pH, ash, totals solids, moisture and insoluble solids. Were observed that the soluble solids (ºBrix) the pulps of vascular cylinder of half and the end the bunchs had the sames, had been less to the of pulp of central stalk. The largest yield was of the pulps of the vascular cylinder, about 75%.
Mostrar más [+] Menos [-]SALINIDADE NA GERMINAÇÃO E DESENVOLVIMENTO DE PLÂNTULAS DE AROEIRA (Myracroduon urundeuva FR ALL)
2007
Alan Martins de Oliveira | Paulo César Ferreira Linhares | Patrício Borges Maracajá | Maria Clarete Ribeiro | Clarisse Pereira Benedito
The aroeira (Myracroduon urundeuva Fr All) is a Anacardiaceae of natural occurrence since the Caatinga ties Argentina and Paraguay, being found in vegetal formations of caatinga, closed and forests pluvial. The species and to cultivate if hold of different form to the salinity, that is, each species of plant or to cultivate tolerates until certain salinity (Salinity threshold - SL), without reducing its potential income. This work had the objective to evaluate the germination if seeds of aroeira in different levels of salinity. One used different Chloride concentrations of sodium and calcium Chloride in the following amounts: 6,4g. 12,8g, 19,2g. The salinity intervened with all the parameters evaluated in the test of germination of the aroeira, to the measure that increased - the concentration of you leave yourself, had decrease in the analyzed 0 variable, being that, from 19,2g the germination of this culture sufficiently is harmed.
Mostrar más [+] Menos [-]