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.

the research was installed in an experimental area (latitude 6º54'59,88"S, longitude 35º09'17,86"O and altitude of 121,00 m) of Capim II Farm, located in the Municipal of Capim/PB, with objective of evaluating the behavior of the culture of the sugarcane (Saccharum spp.), variety SP 79 1011, as for Leaf Area Index submitted to two factors: sheets of irrigation water and manuring levels with zinc. The experimental design consisted of randomizered blocks (DRB), with three repetitions in factorial outline 5 x 5 analyzed jointly. The irrigation sheets were: without irrigation, 25, 50, 75 and 100% of the Etc considering the respective effective precipitations. The levels of zinc were 0, 1, 2, 3 and 4 kg ha-1. The irrigation equipment used in the research was of the type central pivot fasten. The irrigation sheets influenced the area index significantly to foliate along the cultivation period. The maximum leaf area index of sugarcane it happens to the five months of age; at the end of the year of cultivation the variety SP 79 1011 of sugarcane answered, in a significant way, to the sheets of irrigation water. The differences in relation to the cane irrigated with 100% of the ETc they are respectively: 41,12; 23,37; 22,07 and 24,67%.

The purpose of the present work was to determine the size sample in order to estimate soluble solid contents in yellow melon plot. Samples of fifty fruits were taken of fifteen yellows melon plots grown in Mossoró- Assu Agricultural Pole. Evaluation for total soluble solid contents was done in all fruit samples. The procedures used for sample size estimation were bootstrap method and classical expression with 5% and 10% of error limit. The sample sizes estimated by bootstrap method, in average, yielded estimates close to those observed in the classical expression with 10% of error limit, although in ten plots these sample sizes were greater in the bootstrap method. The sample size recommended to estimate the total soluble solid contents in cultivated plots of melon fruits is fifteen.

The aim of the present work was to evaluate the effect of different pruning time of Prosopis juliflora (Sw) DC root system on seedlings growth. The experiment was carried out in the nursery of ESAM, Mossoró-RN. The prunings were carried out at 30, 40, 50, 60 and 70 days after germination. The completely randomized block experimental design was used, with four replications and eight plants per plot. Evaluations for shoot height, stem diameter, shoot height/stem diameter ratio, shoot dry matter weight, total dry matter weight and roots percentage were done. Statistical difference was observed only for root percentages, and the best means were obtained for prunings carried out at 50, 60, and 70 days after germination.

This work aimed to evaluate the economic viability of the pineapple production in the Northern region of Rio de Janeiro State. One concludes that the majority of producers in this region presented an internal return average rate of 33.08%, indicating that pineapple production shows satisfactory economic viability. On the other hand, several pineapple producers of this region are deficient in both production management and administration control. In this sense, it was observed low productivity, inefficiency of the production resources and product price instability in the commercialization process, as one among other factors that result directly in the low profitability of this enterprise. It was found out that the main determinant factors of pineapple production competitiveness in the mentioned region are related to unsuitable management of irrigation, diseases and weeds control, defensives usage, costs management and commercialization process.

The research was conducted in order to compare the methodology recommended on Seeds Analysis Rules, regarding substrate and temperature, for the germination test of linted and delinted cottonseeds. Seeds of the cultivar 7MH from the 98/99 season of Morada Nova-CE were divided into two samples. Two assays were done: inthe first, seeds were delinted with sulfuric acid (98%), for three minutes, being later washed in current water, while in the second, seeds were maintained with linter. Both samples were put to germinate on towel paper, cotton cloth and sand substrates, on fixed temperatures at 25ºC, 30ºC and alternated temperatures of 20-30ºC (20ºC/16h and 30ºC/8h). For each treatment, 400 seeds were used, being eight sub-samples of 50 seeds for paper and cloth substrates. The analysis were done in a seven days interval, being the first counting done at the fourth day and the final at the seventh day after the sowing. Two experiments were done to evaluate linted and delinted seeds, using the completely randomized design, with four replications, in a 3x3 factorial scheme. One concluded that for delinted seeds the germination test must be conducted on cloth cotton or paper towel substrate, atfixed temperature of 25ºC or 30ºC or alternated of 20-30ºC; for linted seeds, the best was cloth at alternated temperature of 20-30ºC.

The present work was realized with the objective to evaluate the percentage of emergenceand the emergence velocity index (EVI) of bacuripari seeds, being accomplished of lath house conditions, with 50% of luminosity, using plants that came from the Germplasm Bank of the Department of Vegetable Production, of Faculdade de Ciências Agrárias e Veterinárias - UNESP - Campus of Jaboticabal, São Paulo state, Brazil. The fruits were picked totally ripe, the seeds were extracted, washed, placed to dry and conditionedin plastic boxes, having vermiculite as substrate. The treatments was characterized by the size of the seeds: very big, big, medium and small, determined by the medium weight of the 50 seeds (in grams), being 63,634; 42,787; 25,631 and 9,508g respectively. The values of the percentage of emergence were transformed in arc sen . The averages were compared by the Test of Tukey, with 5% of probability. Analyzing the results was possible to observe that the smallest values, so of the percentage of the emergence (2,30%) and for the GVI (0,002) were obtained for the seeds with a small size, differing significantly of the other treatments, where was verified values of percentage of emergence of 83,33; 86,25 and 77,00% and GVI values of 0,102; 0,107 and 0,105 for the very big, big and medium, respectively. Can be concluded that there is interference of the seed's size-weight in emergence of this specie.