In this work, the aim was to evaluate the performance of Irrigameter in the management of the irrigation water, led in the culture of the bean plant, comparatively to the use of the methods standard of stove, tensiometers, Bouyoucos, automatic meteorological station and pan Class A. Irrigameter was adjusted to the soil characteristics, culture of the bean and irrigation equipment to confection the management ruler. For direct estimation of the evapotranspiration of the culture of the bean plant in your development stadiums, Irrigameter operated inside with heights of the levels of water of the evaporatório same to 2, 3 and 5 cm, corresponding to the stadiums of initial development, vegetative development and flowering, respectively. The humidity obtained by the standard method of stove it was adopted as reference in the comparisons of the irrigation depth. Irrigameter can be used in the management of the irrigation to determine the consumption of water directly for a culture, in any development stadium; the methods that estimate the evapotranspiration of the culture overestimated the irrigation depth recommended by the standard method of stove, happening behavior contrary with the ones that determines the current humidity of the soil.

Two main floristics groups of the family exist in the Caatinga with different composition happening in two types of substrata: (1) in areas of sedimentary soil (2) in derived areas of the crystalline embasement. Due to the importance of Leguminosae in the biome, an inventory floristic of a defined area was accomplished by the Ministry of the Environment as priority for researches you inform in the Caatinga of the Municipal district of Mirandiba and an analysis of similarity of the flora with the one of other areas of the Brazilian Northeast. Trips were accomplished in the period of March from 2006 to July of 2007 for collection of botanical material. The floristics relationships were appraised for the analysis of UPGMA and PCO starting from the indexes of similarity of Sørensen. 75 species were registered distributed in 39 genera representing 25% of the leguminous mentioned already for the Caatinga. Fence 25% is considered endemic of the Caatinga. The similarity analysis showed the formation of two different groups: The group [A] with similarity of 20% it was established for the Caatinga on sandy soils. The group [B] with similarity of 27% it included the Caatinga on derived soils of the Pre-Cambrian crystalline embasement. Comparing the analyses obtained by the methods UPGMA and PCO, it was verified that the formation of the group [A] and their subgroups were common to the two methods. Already the formation of the group [B] it was not very clear in PCO.

The experiment was done in the experimental farm NUPEARIDO belonging to the Federal University of Campina Grande, Patos, Paraiba, Brazil. The objective of the research was to evaluate the hematological parameters as well as the adaptation degree of goats F1 (Boer x SRD) created in semi-intensive regime and submitted at different levels of concentrated supplementation in the area or the semi-arid Paraibano. 24 animals were used F1 (Boer x SRD), distributed in a delineation entirely randomized with four levels supplementation (0.0; 0.5; 1.0; and 1.5 % of PV in MS) and 6 repetitions. It was evaluated the environmental and hematological parameters aiming at to verify the degree of tolerance of the animals to the atmosphere. In the environmental parameters it was observed that there was significant effect of shifts (P < 0.05) with elevation of the temperatures during the afternoon. Already in the hematological parameters, there was not significant difference among the treatments. It was concluded that the different supplementation levels don't exercise significant effect on the hematological parameters of goats resultants of the crossing of the Boer race and SRD in the area of the semi-arid Paraibano and that the animals demonstrate high capacity of tolerance to the climatic conditions of that area for they maintain the normal sanguine representatives in agreement with the patterns for the species.

The aim of this study was to evaluate the behavior of Jatropha curcas L. when submitted to crescent levels of salinity of irrigation water on the initial growth stage. For this, was collected, from native plants, seeds of two cities, Nova Porteirinha, MG and Tianguá, CE. The experiment was developed in the Campus of Universidade Federal Rural do Semiárido (UFERSA), Mossoró, RN, in the period of March to May of 2010. The treatments were installed in completely randomized design, in factorial 2 x 6 (seeds from two cities) and six levels of electrical conductivity of irrigation water (0.5; 1.5; 2.5; 3.5; 4.5 e 5.5 dS m-1), with four repetitions, being each plot composed by one plant cultivated in a plastic vase, with capacity for eight pounds. Thirty days after sowing, was evaluated plant height, stem diameter, number of leaves, foliar area and weight of dry matter of aerial part of plant. The analysis of results allowed to conclude that there are differences between seeds of Jatropha curcas L. in relation to the tolerance to the salinity; and that proceeding from Tianguá, CE, showed more tolerant to salinity, in reason of larger values of foliar area and plant height.

The goals of this work consisted of identifying the prevalence of helminth eggs in household organic wastes generated in the urban zone of cities of the semiarid of the Paraíba. The work was accomplished from June to December of 2006 in 30 homes in the urban center of Cabaceiras, 30 in Caraúbas and 50 in Queimadas. Organic solid residues were collected during in three consecutive weeks and alternate days (Monday, Wednesday and Friday) in the generating source. For quantification of the helminth eggs three composed samples were picked up by city, resultants of ten fractions of organic solid residues collected in the homes. The amount of helminth eggs varied from 12.82 to 14.39 eggs/gST, with viability of 95.42%. In prevalence order, they enrolled Ancylostoma sp., Enterobius vermiculares, Fasciola hepatica and Ascaris lumbricoides. The eggs of Ancylostoma sp. were identified in 100% of the examined samples. The terrible sanitary quality verified for the household organic waste solid in three cities, located geographically in the area of the paraiban semiarid they suggest that these residues constitute important source of contamination to the environment and the human being, requesting the appropriate management.

This study aimed to evaluate the occurrence of weeds and the performance of common bean grown on different types of plant residues managed with herbicides, in a no-till system. The treatments were arranged in split plots in a randomized block design with three replications. Prior to sowing common bean in the no-till system, plant residues of sorghum, maize, jack bean, sunflower, stylosanthes, rice, soybean and weeds were spread on the plots. Common bean was sown after chemical drying of the cover species. The two secondary treatments in split plots after bean sowing consisted of herbicide absence and the use of a mixture of the herbicides fomesafen (applied at a rate of 100 g ha-1 , 20 days after bean emergence-DAE) and quizalofop-p-ethyl (applied at a rate of 70 g ha-1, 25 DAE). Sorghum produced highest amounts of straw as well as the best soil cover. The plant residues did not influence the establishment of common bean. Herbicide application controlled weeds efficiently. However, the effects of mulch on weed control did not influence bean yield. The treatments influenced the number of pods per plant and grain yield of the bean yield components, with higher values in herbicide-treated plots.

The matriconditioning of seeds aims to improve the germination of seeds and to homogenize the establishment of seedlings in field. This study aimed to evaluate the physiological quality of cotton seeds immersed in solid matrix Algalita under different moisture and conditioning periods. We used seeds of cultivar Pantion cotton chemically delinted, coated in proportions of 100 g of seeds for 1000 g of Algalita. The treatments consisted of five levels of water used for wetting the matrix (10, 25, 50, 75 and 100 mL) during six conditioning periods (0, 1, 4, 8, 16 and 32 days). The experimental delineation was arranged as completely randomized, in the factorial project 5x6 (water texts x periods of conditioning) with four replications. The results indicate that there is a tendency to increase the vigor of seeds when they are stipulated in different levels of humidity in the solid matrix compared with the witness. This behavior happened exactly with the germination of the seeds, with the exception of the treatment of 1,00 mililiter of water.

Today there is still a search for substrates economical, easy to use, available in large quantities and good characteristics for the production of seedlings, so are many substrates available. Thus, an experiment was conducted using different substrates for the production of yellow passion fruit seedlings at the University Vale do Rio Doce in Governador Valadares - MG, from November 2007 to January 2008. The objective was to evaluate different commercial substrates and a substrate used by small farmers in the region, associated with different rates of mineral fertilizer 8-28-16 (0, 21.4 and 42.8 g / plant) on the initial growth of two new cultivars (FB100 and FB200). We evaluated the physiological characteristics of seedlings. It was found that the cultivar FB 200 had the best vegetative growth, the substrate manure + soil was the best for cultivar FB 200, together with the plantmax® was superior to coconut fiber in the initial growth of cultivar FB 100 and the increasing rates of fertilizer stimulated the growth of seedlings.

At present, the preference of the internal and external markets is for small fruits. Therefore the size, other aspects equally are important and considered to determining harvest point how soluble solids, coloration and format. The objective of the present work was determined the physical-chemical changes during the development of watermelon 'Quetzali' with support for the harvest in the size demanded by the extern market. Six harvests were made, the first occasion of marks made on fruits with fresh weight of 2 g and the other at 10, 15, 20, 15 and 30 days of development. Next, the fruits were transported for the laboratory of Irrigated Agriculture of the UFERSA, in Mossoró-RN-Brazil. The experiment was installed in design entirely at random composed by five treatments (days of development), five replications and a fruit for replication. Fresh mass was analysed (g), growth rate of the fruit (g.day-1), length and diameter of fruit (cm), firmness of the pulp (N), vitamin C (mg.100 mL-1 ascorbic acid), soluble solids (SS, %) and titratable acidity (AT, g.100 mL-1 acid malic). The watermelon variety Quetzali obtained the very growth rate of 178.64 g to 20 days and the very diameter of 19.57 cm to 25 days, when size adapted for harvest. To 25 days of development the fruits had firmness of pulp 15 N, soluble solids 8.9%, titratable acidity 0.1289 mg.100 mL-1 acid malic and vitamin C 7.3 mg.100 mL-1 ascorbic acid.

The purpose of this study was to evaluate the production of lettuce Lactuca sativa cv. Verônica to water levels. The experiment was conducted at Centro de Ciências Agrárias at Universidade Federal de Roraima (State of Roraima, Brazil). The experiment was carried out in a greenhouse following the completely randomized blocks design with four replications. The treatments consisted of six water levels based on fractions of the class A pan daily evapotranspiration (20%, 40%, 60%, 80%, 100% e 120%). The results of yield and fresh matter showed a linear response of the applied irrigation levels. The water use efficiency showed a decreasing linear response with respect to the irrigation levels. The maximum of yield showed 17.35 t ha-1 with 120% Class A Pan evaporation level.