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.

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.

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.

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.

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%.

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.

The use of water of inadequate quality is pointed out as one of the causes of failure inseedling production. Absence of indication of salinity tolerance for West Indian Cherry (Malpighia emaginata D.C), an experiment was carried out in randomized block design, with the objective of studying the effects of 6 level of eletrical conductivity of irrigation water (ECw) varying from 0.5 to 5.5 dS m-1 on the formation of seedlings of West Indian Cherry utilizing clone BV1 as rootstock and clone BV7 as graft. The irrigation water of desired ECw was prepared maintaning equivalente proportion of 7:2:1, among Na:Ca:Mg, respectively. The water growth of rootstock was evaluated at 50 days after application of treatments and of grafted seedlings at 15 and 50 days after grafting. The water with ECw of 5.5 dS m-1 does not affect the adequability of rootstock for grafting neither the sprouting of graft at the time of transplanting.

The objective of this experiment was evaluate the effect of nitrogen nonproteic (NNP), that is urea and ammonia sulphate, replace to soybean meal in the supplementation of milk cows fed with differed buffel grass and cactus forage. The work was carried out at IPA - Experimental Station in Serra Talhada - PE. Eight cows were fed in a 7.5 ha area, four from the Guzera race and four from the 5/8 Holstein/Zebu. They were supplied with 38 kg of cactus forage (P) and soybean meal (FS), being replaced by urea + ammonia sulphate (U+SA). The experimental design was the Latin Square, and the treatments were P + FS (1.69 kg FS); P + 2/3FS + 1/3U (1.13 kg FS + 97 g U+SA); P + 1/3FS + 2/3U (0.56 kg FS + 195 g U+SA) e P+U (292 g U+SA). The 5/8 Holstein/Zebu cows were more productive than the Guzera, with the production of 7.08 and 7.31 against 4.67 and 5.34 kg/day, respectively, for milk and corrected milk for 4% of fat. There was no difference among the treatments or interaction race x treatment, so that the NNP could substitute soybean meal in the conditions of developed experiment.

With The effect of replacing conventional corn-soybean based diet by maniçoba hay on the performance and carcass quality of colonial broiler chicken was evaluated. The economical viability of the diet with maniçoba hay was also evaluated. It was used 160 naked-neck chickens with 28 days of age that were distributed according to a completely randomized design, with four treatments, four repetitions and 10 broilres in each experimental unit (five females and five males). The treatments consisted of substituting 0, 5, 10 and 15% of the basal diet for maniçoba hay. It was evaluated feed intake, final weight, weight gain, feed:gain ratio, absolute and relative weigth of the nobles cuts, abdominal fat pad and visceras eatable (heart, gizzard and liver) and relative gross margin (MBR) in relation to the prices of maniçoba hay, prices of others ingredients and those related to chicken live weight. Two males and two females per repetition were slaughtered at 70 days of age. The feed intake with Maniçoba hay diets had no significant effects on the final weight, weight gain, feed:gain ratio, abdominal fat, absolute and relative weight of the noble cuts, while the substitution levels had influenced the feed intake, the absolute and relative weight of gizzard. The MBR reduced when 15% of replacement was used. Utilization of 10% of replacement can be viable, mainly when ingredients prices are elevated or colonial broiler market price is low.

The objective of this paper was to determine the phosphorus adsorption characteristics using the Langmuir isotherm. The study was carried out in the Laboratório de Irrigação e Salinidade, of Universidade Federal de Campina Grande, PB, Brazil, with surface (0-20 cm) samples from two soils of Paraiba State. The soil samples (2,5 g) were mixed with a CaCl2 0.01M (25 mL), with addition to 0; 35; 45; 55; 70; 85 and 100 mg L-1 of P as KH2PO4 and maintained in contact for 24 hours. The phosphorus was analyzed from the supernatant in order to determine the amount of P adsorbed by the soils. The maximum P adsorption capacity (MPAC) was determined for all soil through the linear model of the Langmuir equation. The Ultisol showed the highest values of the MPAC and PmCF and the Oxisol showed the highest adsorption energy. The results showed that the soil attributes that had influenced on soil MPAC were soil organic matter and clay content and the base saturation.