Whiteflies are pests of many crops. They cause severe yield losses and reduce crop quality on fruits. Insecticides of differents modes of action have been used with little success in the control of this pest. In this work, the efficiency of buprofezin and pyriproxyfen applied alone and/or mixtured with fenpropathrin and acephate on Bemisia tabaci B biotype eggs, nymphs and adults was evaluated under field conditions. The experiment was conduced in a randomized complete block design in an irrigated area in Paraipaba, CE, Brazil, with six treatments and eight replicates. The mixture of the insecticides fenpropathrin + acephate applied weekly alone or mixtured was efficient to control eggs, nymphs and adults of the whitefly, while the insect growth regulators buprofezin and pyriproxyfen did not control eggs and adults, but they controled nymphs, being pyriproxyfen more efficient than buprofezin.

With In many areas of the Northeast semi-arid, the native vegetation of caatinga is the main fodder support for ruminants feeding. This experiment was accomplished to evaluate Guzera and 5/8 Holstein/Zebu milk production, having the caatinga vegetation as the base of their diet and with energetic and protein supplement. Eight animals from the two races, with 60 days of lactation and 450 kg of live weight, in the beginning of the experiment, were distributed in two Latin Squares (4X4). Each experimental period lasted 21 days, being 14 for the adaptation of the animals to the ration and seven for the collection. The milk production ranged from 5.29 to 6.19 kg/cow/day for the different treatments. The animals, which received supplementation, produced more milk than those that did not receive it. There were no significant differences among the supplementations. The milk fat percentage did not vary among the treatments. An average consumption of 2.2% of live weight was observed. The animals from the 5/8 Holstein/Zebu had a bigger intake of dry matter, and more milk production than those from the Guzera race.

The objectives of this research were to report Meloidogyne mayaguensis on seedlings of guava (Psidium guajava) cv. "Paluma" in commercial nursery in Assu municipality and in commercial field of pipper (Capsicum annum) cv. "Comandante" in Baraúna municipality, in Rio Grande do Norte State and to notify all of segments involved to commercial growing of fruits and vegetables about the risk that seedlings infected by this pathogen represents to the agro-centers of Rio Grande do Norte and Ceará States. Concerning to both reports the identification of pathogenic species was made by the a-esterasic fenotype characterization. The present reports of M. mayaguensis represent the second and the third ones in Rio Grande do Norte State,having been made the first one on plants of guava in Touros municipality. Meloidogyne mayaguensis can represent a threat to commercial growing of fruits and vegetables if eradication and exclusion methods of control will not beused.

The aim of this work is to approach the prevalence of pathological alterations of the genital system of anestrous females of collared peccaries (Tayassu tajacu). The genital systems of 14 matrices proceeding from the Centro de Multiplicação de Animais Silvestres - CEMAS, of the Universidade Federal Rural do Semi-Árido - UFERSA , that were without activity breeding for a period above of one year had been studied. After it abates of the animals had been collected the agencies that compose the genital system and lead to the Laboratory of Animal Pathology of the Institution for pathological alterations evaluation. The joined pathologys had been hydrosalpinges and ovarian hypoplasia with four cases each (28.6%),one (6.7%) case of persistent corpus luteum associate to mucometra and 2 (14.3%) cases of ovarian cysts. The pathologys of the genital system of collares peccaries can, in changeable way, to compromise temporary or the fertility permanently, diminishing the reproductive effectiveness, with consequent reduction of the breeding, generating economic losses .

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 sugar sugar cane (Saccharum spp.) has revealed as a new energy alternative, mainly as one of the possible substitutes of oil through the combustible alcohol, and São Paulo State is distinguished as being the producing greater of sugar cane, and thus studies are necessary for estimate your productivity, and for this a model was used to predict potential productivity through IPCC datas scenarios, in this study was used the scenario A2 for Barretos city in São Paulo state in the period of 2000 the 2099. In a general way the changes climatic had caused a beneficial effect for the sugar cane, reflecting in a bigger production of dry mass in stalks.

There is an interest in the knowledge about the fertilizing requirements of melon crops, explored at Pólo Agroindustrial Assú/Mossoró/Baraúnas, Rio Grande do Norte, Brazil, aiming at obtaining high productivity levels for quality fruits, reducing fertilizer wastes, and decreasing environmental degradation. The objective of this work was to evaluate the effects of applications of nitrogen (urea) and potassium doses (potassium chloride) on yield and quality of Gold Mine, yellow melon fruits under drip irrigation. Nitrogen doses (0, 50, 100, and 150 kg N ha-1) were combined in a factorial arrangement with potassium doses (0, 50, 100, and 150 kg K2O ha-1) and applied in a randomized complete block design with five replications. Nitrogen increased the number and total mass of fruits, number of marketable melon fruits, and fruit length/width shape ratio; decreased pulp firmness; but did not change pulp total soluble solids content. These effects were independent from potassium doses, which did not influence the evaluated characteristics.

The obtaining of seedlings of high quality in organic agriculture still represents a challenge, especially with relationship to the concentration of nutrients and the physical properties of the substrate. The objective this research was evaluated effect of cast earthworm as organic component of substrate for production of collard greens-butter seedlings. Two experiments were installed in greenhouse in the Universidade Federal do Acre, both in design completely randomized with eleven treatments and eight replications. The treatments were obtained through of mixtures of different cast earthworm concentrations (0, 10, 20, 30, 40, 50, 60, 70, 80, 90 e 100%) and soil, being dystrophic (V = 29 %) in the experiment I e eutrophic (V = 80 %) in the experiment II. To the 26 days after the sowing was evaluated the height of the plant and dry weight matter masses of shoot, root and total plant. The results of the experiment 1 indicated that addition of cast earthome to soils distrophic increases the growth of the plants, in concentrations greater 70 %. However the results of the experiment 2 indicated that addition of cast earthome in eutrophics soils result in benefits effects for plants only in few quaintly, promoted growth maximum in the concentrations around of 20 %. The results of both experiments indicate that the effect of the cast earthworm as component of substrates was of increasing the growth of collard greens-butter seedlings when the chemical condition of the cast earthworm goes better than the one of the soil in supplying nutritious for the plants.

The rational exploration of Tayassu tajacu, popularly known as collared peccaries, may well contribute toward diminishing the predatory hunt for this animal. The object of the present study was to evaluate the effect of sex and castration in relation to amounts of cholesterol and fatty acids found in the meat of animals raised in a captivity. A total of 12 animals was used, 8 being male (of which 4 had been castrated) and 4 female. All of the animals were given the same type of treatment and the same food. After the animals had been slaughtered, the frozen carcasses were carefully packed and sent to the laboratory responsible for examination of meats and fish which is part of the Department of Nutritional Technology of the Federal University of Ceará, in order to determine the quantity of cholesterol and fatty acids present in the meat of these animals. The amount of cholesterol in the meat of the females was less than that found in the meat of the non-castrated males. In relation to the quantity of fatty acids, the meat of the female species presented a smaller percentage of linoleic and arachid acids and a higher percentage of palmitic and palmitoleic acids when compared to both the castrated and non-castrated males. Castration appears to have had no effect on the amount of cholesterol in the meat of the male species, which presented an acceptable lipoid profile due to the presence of considerable quantities of linoleic acid and a lower percentage of cholesterol than that found in other domestic or wild species .

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.