Mamãozinho-de-veado (Jacaratia corumbensis O. Kuntze, Caricaceae) is used for food animal. The objective of this study was to determine a seed storage method for Jacaratia corumbensis to conserve seed viability and vigour. Seeds of Jacaratia corumbensis were put in paper (Kraft) and plastic bags (0.15 mm), and stored in three environmental conditions of temperature environment (22ºC and 65% relative humidity). The germination percentage, moisture content and vigour of seeds were evaluated at the beginning of the experiment and after the storage periods. All treatments maintained seed vigour for 180 days of storage. The best storage conditions to maintain seed viability for a 180-day period were: 1) paper bags (87% of germination) and 2) plastic bags (88% germination) in temperature environment.

Existe interesse em informações sobre as necessidades de fertilizantes para a cultura do meloeiro, explorada no Pólo Agroindustrial Assú/Mossoró/Baraúnas, Estado do Rio Grande do Norte, visando a obtenção níveis elevados de produtividade de frutos de qualidade, a redução do desperdício de adubos e a diminuição da degradação ambiental. O objetivo deste trabalho foi avaliar os efeitos de aplicações de doses de nitrogênio (uréia, 45% de N) e fósforo (superfosfato simples, 20% de P2O5) sobre o rendimento e a qualidade dos frutos do meloeiro Gold Mine, de frutos amarelos, irrigado por gotejamento. As doses de nitrogênio (0, 50, 100, 150 e 200 kg N ha-1) foram combinadas em esquema fatorial com as doses de fósforo (0, 50, 100 e 150 kg P2O5 ha-1). Adotou-se o delineamento de blocos completos casualizados com cinco repetições. O nitrogênio aumentou as massas total e de frutos comercializáveis, reduziu a firmeza e o teor de sólidos solúveis do melão, mas não influenciou os números total e de frutos comercializáveis, nem o índice de formato do fruto. O fósforo não influenciou as características quantitativas e qualitativas do melão.

The objective of this work was of evaluating three textures of mixed organic compost in the lettuce seedlings formation, cv. Babá de Verão, in trays of 72, 128 and 200 cells. An experiment was carried out in a greenhouse of the Plant Sciences Department at Universidade Federal Rural do Semi-Árido (UFERSA). A completely randomized experimental design was used with the treatments in 3 x 3 factorial scheme with three replications. The treatments consisted of combination of three textures of mixed organic compost, obtained by passage in mesh sieves n°4 (6mm), n°8 (4mm) and n°12 (2mm), with three trays of 72, 128 and 200 cells. Evaluations for seedling height, root length, number of leaves per seedling, leaf area, shoot fresh and dry mass, root fresh and dry mass were determined. Higher mean values of root length and root fresh mass were obtained in mesh sieve n° 8 (4 mm) combined with tray of 72 cells. Higher mean value of root dry mass was obtained in mesh sieve n° 12 (2 mm) combined with tray of 72 cells. Higher mean values of seedling heigh, shoot fresh mass, leaf area and root dry mass were obtained with tray of 72 cells. Higher mean value of root dry mass was obtained in mesh sieve n° 8 (4 mm).

Different rooting average were tested to identify those whch would provide the best conditions for growth of mandacaru (Cereus jamacaru P.. DC.), facheiro (Pilosocereus pachycladus Ritter), xiquexique (Pilosocereus gounellei (A. Webwr ex K. Schum.) Bly. ex Rowl.) and coroa-de-frade (Melocactus bahiensis Britton & Rose). five different compositions for rooting average were (sand; soil; sand + soil; sand + cattle manure; soil + cattle manure) the study was carried out from september of 2004 to december of 2005, in an area room temperature at Embrapa semi-arid, Petrolina, PE, Brazil. the substrate composed with sand + cattle manure and soil + cattle manure rooting medium showing the highest rates. In relation to the development of the system to radicular of the cactáceas was verified that in treatment 1 (sand) all had presented the biggest values in length terms. The growth in height of the cactáceas was influenced by different analyzed substrata. Between substrate, optimum cattle manure was with ground.

This work had as objective to evaluate the effect of different calcium sources in the diet of broiler chickens with 1 to 28 days of age, on the food intake, live weight gain, feed conversion, level of ashes and calcium in the tibia bone, longitudinal and transversal length of the tibia bone and retention calcium. The experiment had duration of 31 days being used 576 chicks of one day of age, with the cobb line ancestry. It was used entirely randomized design, being the sources consisting of calcium carbonate, calcium carbo quelate and limestone (calcareous rock) of two distinct deposits, A and B, respectively, being all they also evaluated to the granulometer, solubility and pH. The food intake showed significant difference for the calcium sources, however none of the calcium sources influenced the feed conversion, probably to the observed compensatory physiological effect on the live weight gain of the broiler chicks. With regard to the bone mineralization (tibia), it did not have significant influence of the calcium sources, however, with relation to the diameter and length of the tibia bone, the limestones A and B showed the best values when compared with the calcium carboquelate.

O objetivo deste estudo foi determinar equações do tipo y = a + bx, onde y = área foliar e x = comprimento da folha (C) x largura da folha (L), que permitam a estimação da area foliar, a partir de C e L, em nove espécies adaptadas à região Semi-Árida brasileira. Cem folhas foram coletadas do terço mediano da copa de diversas árvores de espécies de folhas simples (Auxemma oncocalyx, Ao; Bauhinia forticata, Bf; Combretum leprosum, Cl) e de espécies com folhas compostas: Azadirachta indica (Ai), Caesalpinia bracteosa (Cb), Leucaena leucocephala (Ll), Mimosa caesalpiniifolia (Mc), Schinus terebenthifolius (St), and Tamarindus indica (Ti). Nas espécies com folhas compostas, C, L e A foram medidos em folhas intactas (sem folíolos destacados) e nos folíolos destacados. O coeficiente linear foi significativo em Ao e Bf, e não significativo, com folhas intactas em Ai, Cb, St, e Ti. Todos os coeficientes angulares foram diferentes de zero, mas somente em Mc esses coeficientes não diferiram entre si, quando as equações foram ajustadas a partir de folhas intactas e a partir de folíolos destacados. O coeficiente de determinação nas espécies de folhas simples variou de 0,85 to 0,97, enquanto em folhas compostas a variação correspondente foi de 0,28 a 0,93, indicando que a variação na área foliar explicada pela regressão é maior em espécies de folhas simples. Na maioria das espécies de folhas compostas o coeficiente de determinação foi maior quando a estimação foi feita a partir de folhas intactas, exceto em ST.

With the objective of evaluating the production of lettuce seedlings in greenhouse under shading and in floating system, it was installed an experiment in the Federal University of Acre, in the period of November of 2006 to January of 2007. The experimental design was in randomized blocks with four replicates, in split-plot arrangement in strips. The strips corresponded to in the greenhouse and field, the strip, in shading (with and without) and constituting the split-plot, the floating system (with and without). The seedlings were cultivated in trays of polystyrene of 128 cells, containing substrate the base of organic composition, charred peel-of-rice and soil in the proportion of 1:1:1, added 10% of the vegetable coal and 1,5 kg m-3 of termphosphate. The screen with 50% of shading was placed to 50 cm of height. After 24 days of the planting, they were appraised the dry masses of the aerial part, of the root and total of the plant. The largest production of dry mass of the plant's aerial and total part was obtained being used it greenhouse and shading screen. Greenhouse, the floating system without shading presented smaller development of the system root and dry mass total, not differing to each other in the shading condition. The production of seedlings without floating system was better with shading in field and without shading in greenhouse. In the general, the best quality of the seedlings was obtained greenhouse.

The knowledge of hemoglobin types may help in near future the selection of animals, serving as a genetic marker. The present work aimed to determine the types of hemoglobin in Santa Ines crossbreed sheep, and verify whether it has correlation with the erythron. It were collected 49 blood samples from different healthy Santa Ines crossbreed sheep, from Mossoró city, RN, Brazil. These samples were used for determination of packed cell volume, red blood cells counts, hemoglobin concentration, hematimetric indices (mean corpuscular volume - MCV, mean corpuscular hemoglobin - MCH, and mean corpuscular hemoglobin concentration - MCHC), and electrophoretic separation of hemoglobin. The electrophoresis revealed a slow band characterized as hemoglobin A (HbAA), a fast band characterized as hemoglobin B (HbBB) and both bands in the heterozygous hemoglobin A and B (HbAB). The type HbAB was the most frequently found, but all found types were present at representative amounts. The statistical analysis for comparison between the hemoglobin parameters and each parameter of the erythron revealed significant difference only for MCH; the other measurement were not statistically different. Thus, the hemoglobin types (HbAA, HbBB e HbAB) did not influence the erythron of sheep.

The tebuthiuron residue, used in the sugar-cane culture, can be found in soil until two or more years after its application. Recent researches are being done using the phytoremediation in the attempt of removing it from the soil. The purpose of this work was to evaluate the effectiveness of the green manure use in the phyitoremediation of the tebuthiuron herbicide. The evaluated species were: Cajanus cajan, Canavalia ensiformis, Dolichos lablab, Pennisetum glaucum, Estizolobium deeringianum, Estizolobium aterrimum and Lupinus albus. These were sown and cultivated in pots containing soil treated with different doses of tebuthiuron (0.0; 0.5; 1.0; and 1.5 kg.ha-1). A control treatment without green manure, submitted to the same dosages, was kept. Sixty days after planting, green manure aerial part of all plants were harvested and soybean was sowed in the same pot, to bioassay accomplishment. Sixty days after sowing, the soybean plants were harvested, being the following evaluations carried out: height of plants, phytotoxicity symptoms and plants above ground dry biomass and leaf area. Until 0.5 kg.ha-1 tebuthiuron dosage, the species that better phytoremediated this herbicide was L. albus. When the soil was treated with tebuthiuron at 1.0 kg.ha-1, the C. ensiformis, followed by L. albus and S. aterrimum, they were the treatments that better phytoremediated tebuthiuron because results in highest plant height, above ground dry biomass and lesser phytotoxicity symptoms and still the biggest foliar area of the soybean plants. When the tebuthiuron was applied at 1.5 kg ha-1 dosage, it was impossible to evaluate the phyitoremediation, as the tested plants were eliminated.

In order to analyze the morphological variability in natural populations, fourteen accesses of Manihot pseudoglaziovii were studied, collected in the Curimataú Paraibano micro-region, in Paraiba State, besides an esculent M. Cranz access (cassava) and a natural hybrid between these two species. Five plants of each access were multiplied through cutting and then cultivated in an experimental area of the PPGZ/CCA/UFPB under standardized conditions, aiming a homogeneous externalization of each genotype. For the morphometric analyses, 20 morphology characters were studied from which analyses of variance and t-test were done, for each character separately. Pearson correlation analyses between pairs of characters were also carried out, once the occurrence of significant correlation justifies the use of multivariate analyses. The cassava access differed regarding the accesses of maniçoba and manipeba, according to the first canonic axis of the multivariate variance analysis. On the other hand, the presumed hybrid between the cassava and maniçoba differed from the others regarding the second canonic axis. The 14 maniçoba accesses presented variation, but they did not differ among themselves, although accesses 1, 2, 8 and 13 revealed themselves distant regarding the other accesses of this species.