Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

The objective of this work was to identify homozygous F2:3 tomato families resistant to Ralstonia pseudosolanacearum and Ralstonia solanacearum. Two experiments were carried out under greenhouse conditions at the Federal Rural University of Pernambuco, one for each pathogen. We evaluated 45 treatments composed of Yoshimatsu (resistant) and IPA-7 (susceptible) and 43 families F2:3 obtained from generation F2. Each treatment consisted of 16 plants. The incidence of bacterial wilt was evaluated by means of a descriptive scale of notes at 20 days after inoculation. The families were compared with the parents according to the frequency of plants obtained for each note. The chi-square test (χ_c^2) was obtained, obtaining the significance of each of the parents. For the species R. pseudosolanacearum three homozygous resistant families were identified: Family F2:3 # 04, Family F2:3 # 29 and Family F2:3 # 31. Regarding R. solanacearum species, two homozygous resistant families were identified: Family F2:3 # 41 and Family F2:3 # 42. These families indicate the possibility of new resistant strains that can be used in breeding programs.

The objective of this work was to propose a method to calculate and equate the tariffs for the environmental sanitation services of the Department of Water, Sewage and Environmental Sanitation (DAESA) of the city of Sousa-PB, using an accounting-financial approach. It adopted the deductive method, is classified as exploratory, descriptive and documentary type, presents a case study and used a quantitative approach. Based on the data presented by DAESA: monthly consumption, operating costs, number of supply links by type of user and sewage connections, among others, an analysis was adopted considering cost-volume-profit, referring to cost accounting, so that this methodology could provide a basis for updating existing tariffs, by means of percentage corrections thereto. In order to meet the calculated Economic Break-Even Point (PEE $), the amounts should be adjusted by 74.9%, generating revenue of R $ 555,397.81, to cover R $ 82,335.40 of fixed costs and expenses and amortization of R $ 261,258.16, which was the average monthly value of the debt, considering the last five years of the invoices issued by Companhia de Água e egativos da Paraíba (CAGEPA) against DAESA. Finally, it was found to take approximately twelve years, transferring this amortized amount, in equal installments, to the payment of water treated by CAGEPA. It is important to state that, although the limitations on the collection of information, it is possible to import the proposal into the DESA, correcting the current flaws in economic-financial sustainability.

The objective was to present the estimation of the per capita generation and gravimetric composition of the solid residues of the Center of Sciences and Agri-food technology of the Federal University of Campina Grande. These two characteristics are of fundamental importance in the solid waste management process. The methodological procedure was carried out by field survey to identify the number of sectors in the University Campus, as well as the quantification of the daily population that attends the institution. As a result, the daily per capita generation of the Science Center and Environmental Technology was 49.28 g. In relation to the gravimetric composition, it was verified that the organic matter had the highest percentage, representing a total of 66%, followed by 13% of plastics, 9% of paper / cardboard and 8% of composites. It is concluded that the largest part of the total solid waste generated is putrescible organic matter, which was already expected, since solid waste generated in the university campus presents characteristics of household waste.

Sustainable food production is a current paradigm of modern agriculture. Faced with the reduction of virtual stocks of traditionally agricultural fertilizer, alternative sources of fertilization can be used of systems. The present work had a significant influence on the sources of nutrients, the cultivation of butter kale, the butter prepared in organic transition. In this work four soil fertilization sources were used, forming four treatments: NPK mineral fertilizer, organic fertilizer chicken manure, limestone and rock dust. The experiment was conducted in a property in the municipality of Três Passos, Rio Grande do Sul. The experimental design was in randomized blocks with four replicates. The following were evaluated: plant height, number of plant leaves, leaf weight, plant weight and yield. The chicken manure fertilizer obtained value close to NPK mineral fertilizer regarding height, weight, number of leaves and productivity. It was verified that the treatments with limestone, rock dust, organic fertilizer chicken manure and NPK had average values, respectively, of 7, 11, 15 and 23 Mg ha-1 of productivity. The treatment with rock dust had a similar result in relation to the organic fertilizer chicken manure in all evaluated parameters. With the use of rock dust as a source of fertilization it is possible to obtain statistically similar results when the organic fertilizer chicken manure is used in feeding, evidencing the use of rock dust as an alternative source for fertilization.

Coriander is a important vegetable crop in Brazil, being widely consumed as a condiment and cultivated mainly in North and Northeast brasilian regions. Diseases caused by Meloidogyne species are one main causers damages of crop. In the literature there is no reported about identification nematoid resistant coriander genotypes. In this study was carried the reaction evaluation of a heat-tolerant coriander population regarding resistance to Meloidogyne incognita race 1. Forty-six progenies of half-sibs were evaluated in a randomized block design, with three replications, the plot consisting of six plants. After 15 days of sowing the plants were inoculated using 1500 eggs of pathogen per plant. Evaluation occurred 45 days after inoculation, where evaluated characteristics were galls incidence, number of galls in washed root system and number of eggs per plant. Excepting incidence of galls, all variables presented significant difference by the F test, allowing the selection of 31 progenies according to the scale proposed by Oostenbrink. Phenotypic and genetic correlations between number of galls in root system and number of eggs were significant.

The biological collections are evidence of the biodiversity and requisit instrument for several studies and, in this context, the Herbarium of Embrapa Amazônia Oriental was indexed by the Index Herbariorum under the acronym IAN, because at the time of its creation Embrapa was called Instituto Agronômico do Norte, contains a wide diversity of gender Mimosa L., which shows notable economical potential by having a lot of applications in folk medicine, recovery of degraded areas, environmental services, animal food, timber and other utilities. This present study aims to realize the database collection, informatization and availability of Mimosa L. genus, in the herbarium IAN collection of Embrapa Oriental Amazon, highlighting the relevance of the collection and the diversity of existent samples. The data which contains the genus were extracted from the Herbarium IAN database with the software BRAHMS and compared with the data contained in the exsiccates. In this way, it is possible to repair, add data and images that are not found in the database. After verification of the data and the quality of the images, the information become available on internet. So, there were obtained 683 gender Mimosa samples, with presence of 176 species collected in several places, and the estate of Pará being the most representative among the others states. Thus, were verified that near 93% of Mimosa data collection from Herbarium IAN is computerized and with its respective scanned images;86% of all Mimosa material owned to the IAN is available on the software Herbário Virtual IAN. The present study also points out the importance of the collection digital processing and availability, which provide agility and accessibility for scientific institutions and the communities in general.

The Brazilian Cerrado is composed of different phytophysiognomies, where one observes country, savanna and forest vegetation. Thus, a phytosociological survey was carried out to evaluate the diametric structure of a Cerrado fragment sensu stricto, Formoso do Araguaia - TO. Six rectangular plots of 500 m² each (10x50 m) were installed randomly, totaling 0.3 ha of sample area. In the plots we sampled all live and dead standing shrub trees with Circumference at Breast Height (CBH) ≥ 10 cm. There were 508 shrub-tree individuals sampled, being 480 live and 28 standing dead, distributed in 49 species and 27 families. The main families were Vochysiaceae, Fabaceae, Malpighiaceae, Sapotaceae and Melastomataceae. The Qualea parviflora Mart., Qualea grandiflora Mart., Pouteria ramiflora (Mart.) Radlk., Byrsonima coccolobifolia Kunth and Sclerolobium paniculatum Vogel presented the highest Values of Importance. The mean diameter of the individuals was 9.38 cm, the basal area was 4.71 m² ha-1 and density was 1,693.33 individuals ha-1. The diversity index of Shannon Wiener (H ') was 3.21 and the Pielou (J) equability was 0.83. Based on the results obtained it was observed that the fragment has high diversity with low ecological dominance and the inverted "J" diametric distribution pattern was observed in the community evidencing stable and auto regenerative populations.

The substrate and amount of water used are determinant factors for conducting the germination test, affecting the growth of the embryo and the formation of the seedling. The objective of this work was to identify the ideal substrate and the moisture content for the seed germination test of Apuleia leiocarpa. The treatments consisted of substrates: paper towels (RP) and blotter paper (SP), moistened with water volumes equivalent to 2.0; 2.5 and 3.0 times the dry paper mass; sand (SA) and vermiculite (SV) moistened with an amount of water corresponding to 50, 60 and 70% of its field capacity. The germination tests were conducted in a constant temperature germinator of 25° C. The variables under evaluation were normal seedlings, abnormal seedlings, first germination count, germination speed index, average germination time and relative germination frequency. The experiment was conducted in a completely randomized design with three replicates of 50 seeds. Seed germination was not influenced by the water volumes used. Only the substrates showed differences, and the paper towel substrate is better for the germination test of Apuleia leiocarpa seeds, while the blotter paper is not recommended for the germination test of this species.

Water is a natural resource indispensable to life, has enormous economic, environmental and social value, and it is fundamental to the survival of humans and ecosystems on our planet. Surface water must meet standards of quality and drinkability, and its physical, chemical and biological characteristics should meet the standards recommended by the World Health Organization. The present study aimed to evaluate the physical-chemical and biological properties of surface water of three water bodies in the Municipality of Teixeira de Freitas, Bahia. The following parameters were evaluated: BOD (Biochemical Oxygen Demand), Total Phosphorus, Total Nitrogen, Dissolved Oxygen, pH, Total Solids, Turbidity and Thermotolerant Coliforms. The evaluation showed that all of the three water bodies are contaminated and in disagreement with the limits established in CONAMA Resolution No. 357/05 for Class 2 freshwater. In addition, one of the three water bodies showed signs of eutrophication.

Corn is one of the cereals of major agricultural importance of consumption, animal and human, being highly energetic, presenting excellent composition and numerous applicabilities. The objective of this work was to determine the centesimal composition of criollo corn cultivated in different regions of the State of Paraíba. The analytical determinations were conducted in the Laboratory of Physical-Chemical Analysis of Food belonging to the Federal University of Paraíba, Campus - III, Bananeiras, Paraiba. The seeds of the Jaboatão Creole maize came from the family farmers of six municipalities located between the swamp and the semi-arid Paraiba. After the seeds were harvested, the selection and subsequent milling of the Willey-type knife of the samples were performed in the laboratory for the analysis. The analyzes of protein, lipid, ashes, moisture and carbohydrates were conducted at the Physical Chemistry Laboratory of Foods to analyze the centesimal composition of the Jaboatão Creole maize. A completely randomized design was used, with eight treatments (six collection municipalities) and three replications. The results obtained for the protein and ash analyzes in Jaboatão Creole maize had higher levels in samples obtained from the city of Alagoa Nova, where they presented with lower percentage of moisture in the evaluated material. For lipids the maize obtained from the municipality of Massaranduba 1 was higher, and the samples from the municipality of Remígio 2 had a better percentage of carbohydrate when compared to the other municipalities analyzed. The Jaboatão maize variety cultivated by family farmers has nutritional potential to be used as a food source.