The work was accomplished in Santa Luzia Farm in the municipal district of Cruz do Spirit Saint, PB. Located in the coordinates Lat 6° 56'52.21" S and Log 35° 7'57.01" O with the objective of verifying the space variability in what concerns the saturation of aluminum in Interchangeable Catiônica's Complex (ICC). the total area considered about experimental unit was of 49 ha. The area was divided in irregular mesh totaling 39 points, each collection point, besides the limits of the property, it was georreferenciado with a Geodesic GPS. The collection of the soil felt in trenches of 1 m3. The tenor of Aluminum in the first horizon of the profile of the studied soil presents characteristic of dependence fort, have seen the relationship n effect/ landing of < 25%. the saturation of aluminum is, in 61,5% of the area, normal and in the others 38,5% of the area demand correction.

The present research describes the defensive behavior of Haplostegus nigricrus Conde (Hymenoptera: Pergidae) larvae exposed to the stink bug predators Podisus nigrispinus (Dallas), Supputius cincticeps (Stal) e Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae). The main defensive strategy of H. nigricrus seems to be the regurgitation of toxic compounds and the continuous exhibition by the mouth, because all predators died until 24 hours after the direct contact. Only B. tabidus reached the adult phase with H. nigricus larvae as diet what suggests the higher tolerance and hability for detoxication of chemical compounds from that Symphyta.

The quality of irrigation water is one of the environmental factors that can affect the initial growth of the culture of melon. This study aimed to evaluate the emergence of seedlings of melon, hybrids Goldex and Vereda in different levels of salinity of irrigation water. The study was carried out at the Seed Analysis Laboratory of the Department of Crop Science of the UFERSA, Mossoró, RN, between February and April 2007. The treatments were organized in a completely randomized design in factorial scheme 2 x 6 (two hybrids of melon plant Goldex and Vereda, and six levels of electrical conductivity of irrigation water: 0,45; 1,30; 2,15; 3,00; 3,85; 4,70 dS m-1), with four replications. Evaluation of speed of emergence-index, height of the aerial part of the seedling, dry mass of the aerial part of the seedling and seedling emergence. The salinity interfered in all parameters measured, and that as of 2.5 dS m-1 were more harmful to the hybrid Goldex that Vereda.

The objective of evaluating the effect of salinity water irrigation of the for vegetative phase of castor culture, it was developed a greenhouse experiment in the Ciências Ambientais Department of UFERSA. The experimental delineating used was entirely randomized with six treatments and three replications. The soil utilized was eutrofic Redyellow Latossol and the treatment was six waters with different salinity levels (0,5; 1,0; 1,5; 2,0; 2,5; 3,0 dS·m-1). The cropping was carried out with the BRS 149-Nordestina variety. The variables evaluated were: chemical-physical characteristics of the soil (pH, Electrical Conductivity, Ca, Mg e Na), and in the plant, the plant height, stalk diameter, fresh and dry matter, and leaf area. It was observed that soil undergo had the influence of the waters utilized: the pH, Electrical Conductivity and changeable Na with the water salinity. With the increase of the salinity, the plant development decreased, with increased of salinity.

The work had as objective to evaluate the germination of seeds of sugar apple (Annona squamosa L.), submitted the treatments daily pre-germinative, under controlled conditions. One evaluated the percentage of germination and the index of germination speed (IVG), using the delineation entirely casualizado with four repetitions of 25 seeds, in factorial project 2x5, being the factor scarification mechanics in two levels (with and without scarification) and factor imbibition in five levels: water, Stimulate® the 20 mL L-1, acid giberélico 50 and 750 GA3 mg L-1, all absorbing for 12 hours, and a treatment without imbibition. The scarification mechanics was carried through with sandpaper for wood. The results had shown that the scarification mechanics separately, did not make possible the overcoming of the dormancy in seeds of sugar apple. Significant alterations with the use of the sandpaper had been verified with the embebição of seeds scarification in water and Stimulate®, with increases of 22 and 43 %, respectively. The scarification with sandpaper revealed unnecessary with the imbibitions of the seeds in 750 dosages of 50 and mg L- 1 of acid gibberellic, with percentage of germination varying of 83 and 98%. The Stimulate®, in the used concentration, was inferior to the GA3 use, providing, however, increase of 43 % in relation to the germination of scarification seeds, without imbibitions the biggest indices of germination speed had been verified in the treatments with GA3, observing itself rise of the values with the increase of the dosage of acid gibberellic, and also with the use of the sandpaper.

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.

The work was conducted in Acauã site, in Caucaia - Ceará State, in a "semi-árida" coast region. The objective was to evaluate thermal stress occurrence and his possible impact on ovulation induction treatment efficiency, onset of estrous behavior of dairy Goats from different breeds. Twenty two adult goats were utilized: 10 Saanen, 4 American Alpines and 8 ½ Murciana x undefined breed, raised in installations with high floor, side windows and sunny areas. The estrous induction treatment was conducted using vaginal sponges with MAP, intramuscularly Cloprostenol and eCG. In the environment were registered air temperature and humidity, Radiant Heat Load and Black-Globe Humidity Index. Rectal temperature was similar between breeds and partum order. Respiratory rate was higher in Alpine goats. The induction treatment and estrous behavior interval was similar in ½ Murciana x undefined breed goats and Saanen goats and higher in Alpines and multiparous goats. The fertility rate at 1st AI was lower in ½ Murciana x undefined breed goats and multiparous goats.