The current model of economic development is based on a predatory and exculpatory vision, which discloses a way of being inhuman. Implying in changes of perception, thoughts and values, it has seen, that the form as the nature is explored in accordance with varies the ambient perception of the community or group. This work objectified to analyze the perception of Juazeirinho/PB agricultural communities referring the extinction of biodiversity of caatinga, aiming at to delineate sensitization strategies that make possible the valuation of this biome. The work portrays a carried through participant research with the communities Escurinha and Mendonça. For the collection of data direct comment was used, with visits to the communities, dynamics, half-structuralized interview and accomplishment of meeting. According to community some vegetal and animal species are disappearing. Between the animals they are cited: corduniz (Nothura sp), gato do mato (Felisa tigrina), gato maracajá (Felis wildi), mocó (Kerodon rupestris), preá (Gálea sprixii), Tejo (Família Teiidae), tatu peba (Euphractus sexcinctus), tatu verdadeiro (Dasypus novmcinctus) e o guaxinim (Procyon camcrivorus).Between vegetables they had been cited: Aveloz (Euphorbia gimnoclada), Imbuzeiro (Spondias tuberosa), Aroeira (Myracroduom unrudeuva), Caatingueira (Caesalpinia pyramidali), Baraúna (Schnopsis brasiliensis), Quixabeira (Bumelia sertorum), Mufumbo (Combretum leprosum). We can verify that it is necessary to promote changes in the ambient perception of the studied communities, thus allowing, to awake for problematic ambient, to point and to search solutions, that take the valuation of local biodiversity.

This work was accomplished with the objective of evaluating the effect of different levels of salinity of the irrigation water in the development of cowpea. The used design was it entirely randomized with five treatments (0.5, 2.13, 2.94, 3.5 and 5.0 dS m-1) and three replications. The plants were collected to the 45 days after sowing, being appraised: the diameter of the stem, number of nodules in the roots, height, number of leaves, leaf area and total matter dries. The salinity influenced lineally in the vegetative growth of the bean cowpea, being all the reduced characteristics with of the saline level. The most affected characteristics for the largest saline level were leave area (65.90%), the matter dries (69.10%) and the number of nodules (98.71%).

This study aimed to carry through chemical caracterization of the coconut fiber powder and evaluate its effect on the absorption of nutrients in the as medium substrate on the production of eggplant seedling. The experiment was conducted for forty days under greenhouse, and it was used seeds of the Florida Market cultivar were cultivated in polyetilene strays with 54 cells and irrigated with nutritive solution two times for day. The substrates were used dust and fiber green coconut coir fibre, in the proportions of 100% of dust, 75% of dust + 25% of fiber and 50% of dust + 50% of fiber, washed and not washed; dry coconut coir fibre not washed; rind of green coconut grinded (fiber and dust mix from machine) washed end not washed (fiber and dust mix from machine); commercial substrate not fertilized and control (green coconut coir fibre not washed and not fertilized). It was used a statistical randomized block design with eleven treatments and four replications, with 25 plants per replications. The chemical characterization of substrates was carried through and was valuated nutrient total contents of the plant upper parts. The best results were observed for the seedlings grown in dry coconut coir fibre not washed, followed by commercial substrate and green coconut coir fibre washed.

The moringa oleifera Lam. tree, a native plant species from tropical Africa, although it has been in introduced in Brazil as an ornamental tree, it can be used for industrial and medicine purposes. The work was to evaluate the physiological quality of the jug with different reservoirs and environmental conditions for a period of six months. The study was conducted in the laboratory of plant physiology in UFERSA, where the seeds were obtained, which were stored after the harvest in three different containers: plastic bag, paper bag and glass which were stored at room temperature and cold for a period of three and six months. After 12 days of sowing, evaluations were made of the speed of germination index (IVG), height and fresh and dry matter of seedlings. The experimental design was entirely randomized in a factorial 3 x 2 x 2, and studied three containers (plastic bag, paper bag and glass), two environments (temperature and cold) and two storage periods (3 and 6 months ) with four replications. The results showed that the seeds are orthodox behavior, remaining viable for six months when stored in cold and room temperature, regardless of packaging, if they are wrapped in airtight packaging.

This work deals with the survey of the family Boraginaceae in a lowland seasonal dry forest in the municipality of Aliança, Pernambuco, Northeast Brazil. Seven species and three genera were recorded: Cordia L., with three species (C. sellowiana Cham., C. taguahyensis Vell. and C. trichotoma (Vell.) Arráb. ex Steud.); Heliotropium L., with only one species, H. elongatum (Lehm.) I.M. Johnst. and Tournefortia L., represented by three species (T. bicolor Sw., T. gardneri A.DC. and T. rubicunda Salzm. ex A.DC.). A key to the recognition of the species, as well as descriptions and illustrations were given. Data about distribution, flowering and or fruiting of the species also are provided.

The objective was to evaluate the effect the soil chemical characteristics with the application crushed basalt doses soil samples in the Mato Grosso do Sul State. The experiment was installed in a completely randomized design with six treatments, represented by basalt ground doses (0.00, 12.50, 25.00, 37.50, 50.00 and 62.50 g dm-3) and three replications. Samples of 200 cm3 soil each, packed in polyethylene pots were incubated in the laboratory for 90 days with crushed basalt. At the end of the incubation the samples were dried in the air, passed through a sieve with mesh 2 mm opening, homogenized and subjected to chemical analysis of pH, aluminum, calcium, magnesium, potassium end potenciaty acidy. The values base saturation (V%) were calculated by the product of the bases sum per 100 divided by the cation exchange capacity at pH 7.0 (T). Concluded that the pH is shown with the greatest change the lower the power of packing the soil. With the application crushed basalt was very significant increases in the potassium levels. The biggest increases calcium and magnesium in the soils were poor in these nutrients.

The research was lead in two experiments with the objective of to identify methods to superation of dormancy in seeds of Leucaena leucocephala, Cunningham variety, and to verify the effect of light and temperatures in germination of this species. In first the seeds were submitted the nine methods to superation of dormancy: immersion in water under ambient temperature during 24, 48 and 72 hours, immersion in hot water under temperatures of 60, 80 and 100oC, immersion in sulfuric acid per 5 and 10 minutes, beyond of the witness. In second experiment, after treatment with sulfuric acid for 10 minutes, the seeds were sowed in tabledoch paper type Germitest and put to germinate under ten combinations: continue light and constant temperature of 20, 25, 30 and 35oC; dark continue and constant temperature of 20, 25, 30 and 35oC; alternated temperature of 20-30 and 25-35, both with fotoperiod of eight hours. Conclusion the specie Leucaena leucocephala presents seeds dormancy, detach-itself the sulfuric acid as efficient method to the superation of dormancy; the seeds of leucena are insensitive to the light and your germination was not influenced by the temperatures useds.

This research had as objective determination the floristic composition and some parameters phytosociological of the herbaceous vegetation of caatinga. The studied area is located in the located in the experiment station of UFPB, in the county of São João do Cariri, Paraíba, Brazil. Three caatinga physionomy were selected where were plots fixed of 10mx10m, an open one and another closed, containing 5 plots of 1m x1m total of 30m². Being a represented by the covering vegetable less conserved (Area I), other constituted by an area in intermediate apprenticeship of conservation (Area II), and the third area being represented by the covering vegetable more conserved (Area III). The herbaceous flora was represented by 31 genera, 40 species and 21 families with 3.091 ind.m² distributed in the three areas. The areas II and III presented larger wealth and diversity, expresses so much for the number of families as of identified species. The families, Convolvulaceae, Euphorbiaceae and Fabaceae presented larger number of species in the open and closed plots. Aristida adscensionis, (area I and II) and Cyperus uncinulatus (area III) the species that presented were larger value of importance in the closed and open plots were.

The objective of this work was to evaluate the influence of crescents phosphorus levels in two hybrids of forage sorghum cultivated on "Zona da Mata" region, State of Alagoas. The treatments were two hybrids of forage sorghum: BRS304 e BRS310, and four phosphorus levels: 0, 25, 50 e 75 kg ha-1. The statistical design was the complete randomized block with four replications in a split plot scheme. Each experimental plot was constuited for five row of 4.5 m, spaced of 0.70 m. The soil of experimental area received lime to increase basis saturation to 60%. During the sowing, all experimental area received 100 and 120 kg ha-1 of N and K, respectively. The plants were collected 40, 50, 60 e 70 days after emergence. The mass collected was separaeted in leaves photosynthetic active and remaining of the plant. When the grains were on the "farináceo duro" stage, the yield was evaluated in 1.4 m2 on plots center. The phosphoted fertilization increases linearly the sorghum production until 75 kg ha-1 level of P. The phosphorus provides better grain participation on total dry matter of sorghum plants.

Seeds of Caesalpinea ferrea Mart. ex Tu. var. leiostachya Benth. present low and irregular germination due to dormancy caused by the impermeability of the tegument. With the purpose to determine an efficient method to accelerate and uniformize seed germination, they were submitted to different immersion periods (0, 5, 10, 15, 20, 25 and 30 minutes) in sulfuric acid (95-98%), influence emergency and vigor (first count, speed index, medium time and relative frequency of emergency, length and dry matter of the seedlings). The experiment was carried out under greenhouse conditions with an experimental design of completely randomized, with seven treatments and four replications. The pre-conditioning of the seeds with immersion in concentrated sulfuric acid was efficient to overcoming seed dormancy, by increasing the percentage and speed emergency, the first count of emergency, length and dry matter of seedlings and reduction in the medium time for emergency. The efficiency of this chemical treatment with concentrated sulfuric depends on the immersion time, and 10 to 20 minutes were the most adequate to provide larger emergency uniformity percentages and vigor.