The objective of this work was to evaluate the effect of the urban waste compost on the yield and heavy metals concentrations in red beet plants (Beta vulgaris L.) in soils with different textures. The experiment was carried out in greenhouse in polyethylene recipients of 9 dm3. The experimental treatments resulted from a 3 x 4 factorial arrangement of a Red Yellow Latosol, sandy clay loam, (LVAfaa), a Red Yellow Latosol, loamy sand, (LVAfa) and a Quartzarenic Neosol, sand loam, (RQ), combined with the urban waste compost doses of 0, 30, 60 and 90 t/ha, in dry base. The experimental design was in randomized blocks with three replications of the treatments. Soil pH, fresh and dry matter weight and Zn, Cu, Cd, Pb and Ni concentrations in the soil and the leaf tissue were determined. Amongst heavy metals determined, Zn and Cu had been only influenced by the soil texture, being biggest concentrations in the soil with bigger amount of clay. The dry and fresh weights of the red beet root had increased with the increment of the doses of compost, having reached maximum values, inside of the experimental interval, with the 90 t.ha-1. Otherwise, the heavy metal content in red beet root decreased with the increase of the doses of compost. As much the Ni how much the Pb had presented content level in root above of the allowed maximum limits for the consumption, as values established for the Brazilian legislation.

Random regression models (RRM) allows considering heterogeneous residual variances to describe the growth for each age. However, this feature increases the number of parameters to be estimated in the maximization likelihood function process. Searching for more parsimonious RRM, several approaches have been suggested. One of them is the use of different structures of residual variances modelled through step function in different classes with similar variance or through variance functions. A total of 7,369 records of body weight of partridges, measured from birth to 210 days of partridges born from 2000 to 2004 were used in this research. The random regression models applied to the data set considered different structures of residual variances and were performed by the restricted maximum likelihood method. The residual variances were modeled using classes of 210 (R210) and 30 (R30) ages and variance functions with orders ranging from quadratic (VF2) to nine (VF9). The R30 considered birds weighted in the same week. The random effects included were the genetic additive direct and the permanent environment effects of the animal. It was not possible to include the maternal effects in the models. All random effects were modelled by sixth order regression on Legendre polynomials. The models were compared by the likelihood ratio test, the Akaike's information criterion and the Schwarz's Bayesian information criterion. Best results were showed by the models R210 and VF5. In conclusion, the most parsimonious model was VF5 and should be applied to fit growth records of partridges.

The effect of the plant resistance inducer acibenzolar-S-methyl on in vitro mycelial growth and sporulation of Curvularia eragrostides was evaluated, as well as the time and dosage of its application for the pathosystem yam x C. eragrostides. Five concentrations: 250; 125; 62.50; 31.25 and 15.12 ppm were evaluated for mycelial growth and sporulation of C. eragrostides. The ASM was sprayed onto the leaves of yam plants, at a concentration of 10 g, 20 g, and 30 g of the active ingredient (i.a.) per 100 liters of water, at time intervals of 10, 15, and 30 days before pathogen inoculation. Mycelial growth and sporulation of C. eragrostides was not affect by ASM, at the concentrations of 62.5; 31.25, and 15.12 ppm. Application of ASM was most effective at the dose of 15 g a.i./100 l of water, at 15 days before pathogen inoculation, providing protection against C. eragrostides, with a decrease of up to 76.15 % in yam leaf spot severity.

The mapping of the Permanent Preservation Areas (PPAs) of the municipal district of Grossos, RN, located in a region with avowed tourist potential, because of their dunes, salt marsh and archeological ranch. Interesting for planned real estate activity. The objective of this work was the necessity to produce cartographic documents, orientated by the actual legislation, that serve as base for to decide as occupy the surface of municipal district. The maps, at the 1:100,000 scale, with delimitation of the PPAs were produced aided by SIG, satellite image colored and vectorial file. The conclusions were good, principally the next: the PPAs occupy 46,8% of the surface of the municipal district, limiting the use and soil occupation, already the PPA of dunes occupy an area 25% of the municipal surface.

The design of a lateral line was an applied tool with the objective of determining, accurately, the lateral line final pressure, considering the presence of a hydraulic cannon or not in the final extremity of the piping; so that the irrigation planner has the exact science of the entrance pressure in the central pivot. Being able to like this, design projects more optimized in terms of energy. The evaluation of the system provided the rebuilding of the curve of control of the equipment taking to the producer the reality of his/her overhead irrigation. The hydraulic project of the system provides the visualization of the theoretical behavior of the system that, when compared, to the real behavior, position in execution, it can serve as auditing for ends of correction of the possible flaws, be of project and production or of execution.

The use and inadequate management of the soils under caatinga vegetation are pointed as one of the main causes of the degradation and desertation of that environment. The compacting of the soil, that it depends on several intrinsic and extrinsic factors, it is considered as a good indicator of degradation of the soil.This study had as objective evaluates the susceptibility to the compacting and resistance to the penetration and their correlation with physical attributes of a Neossolo Litólico (Brazilian system of classification of soils) under caatinga vegetation. The study was developed in the area of Serra Talhada - PE and it considered as variables the tenor of organic carbon (CO), resistance the penetration (RP), clay tenor (Clay), silte (Silte) and sand (Sand), medium diameter of the cluster (DMP), density of the initial soil (Dsi), particle density (DP), total porosity (PT) and compactability (density of the soil after being submitted to four compacting energies - DsE1, DsE2, DsE3 and DsE4), in three depths, with eight repetitions. The RP and compactability increased significantly with the increase of the depth of the soil, presenting extreme values for 2,47 at 5,81 kgf/cm2 and 1,50 at 1,84 g/cm3, respectively. RP and the compactability presented significant correlation amongst themselves, and they presented significant correlation with the tenor of CO, clay and silte, not presenting significant correlation with the other studied attributes.

This work was developed with the objective of evaluating the development of the rocket fertilized with different organic fertilizers and irrigated with water of different salinity levels. The design was used randomized entirely in a factorial scheme 5 x 4, resulting in 20 treatments with 3 repetitions, being the experimental unit acted by a plant/vase. The first factor was composed by 5 levels of salinity of the irrigation water and the second by 4 different compositions of the substrates (S1 - Soil, S2 - Soil + Manure bovine (3: 1), S3 - Soil + Manure ovino/caprino (3: 1) and S4 - Soil + earthworm Humus (3: 1)). They were appraised the number of leaves, leaf area and matter dries of the aerial part. The number of leaves, leaf area and matter dries of the aerial part were reduced with increment of the salinity of the irrigation water. The sources of organic fertilizer studied influenced significantly in the answer of the rúcula the salinity, being an alternative for the cultivation of this vegetable under saline condition. The bovine manure presented the best acting in the development of the plants.

This work was carried out under greenhouse conditions to evaluate the growth and the mineral nutrition of the stylosanthes in response to levels of sugar-cane bagasse used as substrate for multiplication of arbuscular mycorrhizal fungi, and tested as inoculant. Randomized blocks design was used in a 4 x 3 factorial, being four levels of the sugar-cane bagasse (5, 10, 15 and 20% of the volume of the pot of 6 L) and three microbiology treatments (Control; Native Inoculum and Glomus clarum), with four repetitions. The shoot were harvested 60 days after seeding and it was analyzed the dry matter yield (DM) and root (DMR), the accumulations of crude protein (CP), P, K, Ca, Mg and S; the mycorrhizal colonization, density of spores and number of nodules. The sugar-cane bagasse promote lineal increment in the production of DM independent of the mycorrhizal inoculation. In of DMR, there is interaction between levels of sugar-cane bagasse and microbiology treatments. The inoculation with the native inoculum increases the accumulated amounts of P, K, Ca, Mg and S; the density of spores and number of nodules, the same not happening for the Glomus clarum. Crude protein and mycorrhizal colonization were not influenced by the treatments.

The semiarid is characterized for presenting precipitations concentrated in short period of time, form that to most of the year the ground are displayed the strong insolation and to the raised hídrico deficit. On the other hand, the estacional variation of the climate affects the water content of the ground and as consequence the biological activity and the losses of C, mineral N and C-CO2.The purpose of this research was to analyze the losses of C, mineral N and C-CO2 of the ground in a microbasin, that passes for a process of environmental degradation, located in the Fazenda Experimental Bacia Escola/CCA/UFPB in São João do Cariri - PB, during the period of a translation, of the years of 2003 and 2004. It was defined a toposequence and chosen points of determination for the evaluation of the reserves of carbon, mineral nitrogen and microbic activity by means of the C-CO2 production. The biggest amounts of C had been verified in the areas of pediment and the minors in the area of side slopes; The amounts of mineral N was not influenced by the position of the ground in the toposeqüência; The biggest liberation of C-CO2 happened in the areas of pediment followed by the flood plain and half hillside, places with the biggest amount of of water in the soil.

The present work, Brachiária decumbens Stapf., to the application of lime, nitrogen and zinc in the quality of dry matter to evaluate residual the reply of the during four cuts. For this, an experiment was installed in the UNESP/FEIS, Selvíria-MS, a distrofic Red Latosol (october/1996 may/1997). The experimental design was blocks randomized, in factorial project 3x3x2, with 4 repetitions. The treatments had been composites for three rates of nitrogen: 0; 50 and 100kg ha-1, three rates of lime: 0; 267 and 556 kg ha-1 and two rates of zinc (0 and 5 kg ha-1), applied in the first year and reapplied in as the year, except the lime. In as the year of experimentation, one became fullfilled three cuts in the grass to the 10 cm of the soil, with intervals of 49 days, for the evaluation of the text of crude protein, coefficient of digestibility "in situ" of the dry matter and content neutral detergent fiber. The crude protein, increased with the fertilization nitrogen in all the cuts of the grass, however, the effect of the application of Zn and limestone, in the increment of the crude protein, was restricted only in as the cut. In as the cut it had positive interaction of N and Zn. The digestibility coefficient was increased with the application of the limestone only in the third cut, while in as cut had this increase occurred only with use of the biggest dose of N. The nitrogen fertilization diminished the neutral detergent fiber in the first cut of the grass, and increased in excessively the cuts. While, the zinc and lime application did not affect the neutral detergent fiber in the three cuts of the grass.