The objective of this work was to evaluate the effect of different levels of nitrogen and potassium fertilization, applied in covering, on the yield and quality of sugarcane (Saccharum ssp., variety SP- 716949) under irrigation. The experiment was conducted in an area of the Miriri`s distillery, in the Capim district, PB. The treatments were constituted by four levels of covering fertilization: AC1- 85 kg ha-1 ( 44 kg de N plus 41 kg de K2O), AC2 - 167 kg ha-1 (86 kg de N plus 81 kg de K2O), AC3 - 305 kg ha-1 (157 kg de N plus 148 kg de K2O), AC4 - 458 kg ha-1 (236 kg de N plus 222 kg de K2O), arranged in an experimental design of randomized blocks, with three replications. The analyzed variables were: productivity of stems, percentage of ºBrix, Pol and PCC, yield of sugar and alcohol. Among of studied variables, just the productivity of stems was affected significantly (p < 0.05) by the fertilization. The regression analyses revealed that the largest productivity of the stems (108.21 t ha-1), the maximum percentage of PCC and ºBrix (14.35 e 20.40%) and the maximum yield of alcohol (9948 L ha-1) were obtained with the level of covering fertilization of 458 kg ha-1 (236 kg de N plus 222 kg of K2O).

This study aims to identify the diversity of mimercofauna sabiá in an area of the municipality of Rio Largo, Alagoas. There were 17 species of ants belonging to six subfamilies. Atta opaciceps (Borgmeier, 1939) was the most abundant species. Camponotus blandus (Fr. Smith, 1858), Camponotus atriceps (Fr. Smith, 1858) and Pheidole sp.2 gp. aberrans.

The local as regional landscape presents two distinct landscapes: sediments removal from elevated parts and Pedoenvironmental of accumulation of sediments in the area of sandbank with the pedoforms convex-convex, with the biggest curvatures in the sandbanks. The objective of the present work was of characterize physically, morphologicament and chemically the soils groups, located in Semi-Arid region of the medium one West of Rio Grande do Norte, Brazil. Few studies about the morphology, mineralogy, genesis and classification of the soils developed in the state of Rio Grande do Note mainly in the medium one West of Northeast of Brazil. Inside this context eight soils representative of that landscape into caatinga were characterized by means of description morphologic, granulometric and chemical. The results observed in the granulometry of the Luvisol and Neosol reflect basically the different deposition situations in those soils. The high values of organic matter and nitrogen in the superficial horizons, decreasing with the depth and the strong presence of calcium and magnesium justified the variation of pH and the high value of the cation exchange capacity.

The objective of this study was to evaluate the effectiveness of artificial cooling associated with the use of diatomaceous earth to control insects in grains of wheat stored in concrete silos. We used two concrete silos, with a static capacity of 2.500 t (Silo A) and the other with static capacity of 5.000 t (Silo B). The surface of the grain silos were treated with diatom earth with a commercial assay (1.0 kg / t of product). For the cooling of the grains, cold air was blown through the aeration system silos until the grains reach a temperature of 17 ° C between the layers. After cooling, it is the retention period of five months. The monitoring of insects in the Silo A was accomplished by collecting infested grain and / or insects with probes. In Silo B, the monitoring was done through the capture of insects with traps of the type calador. In The Silo, were not detected representative quantities of insects in grain up to 120 days, when the collections were made with probes in the layer below the grain treated with diatomaceous earth. In Silo B, where the collection of insects was performed with traps of the type calador, increased population of insects of the species O. surinamensis and R. dominica with the extension of storage. This increase in the number of insects was greater after 60 days of the early experiments. This is happening due to the presence of insects in grain mass before cooling. The use of cooling associated with the inert powder has an effective control of insects in grain mass.

This paper was developed on partnerships between association of milk producers in Catingueira, Paraiba States to characterize the socioeconomic profile theses farmers. Interview with 11 farmers using semi-structure questionnaires showed 72.7% were farmer with lesser areas 100 ha, low educational level and utilizing labor family and 18.2% not had veterinary assistance. The majority farmers not did forage storage and not did utilization of mineral salt to diet animals. All farmers had PRONAF credit but not systematical technical assistance to definition of strategical program of intervention.

The present research evaluated the physical barriers influence in the water distribution profiles of five microsprinkler of the mark DAN 2001, with the respective combinations of diameters and drains same to 0,84 mm and 20 L h-1, 1,10 mm and 35 L h-1, 1,33 mm and 55 L h-1, 1,48 mm and 70 L h-1 and 1,75 mm and 95 L h-1, with the objective of evaluating the behavior of your distribution profiles in function of the factors: height and distance of physical barriers. The water distribution profiles without barrier of the microsprinkler that use the two smaller diameters and the two smaller drains present, in general, an initial tendency of growth of the precipitations, followed for reduction and increase gradativo until reaching maximum value, decreasing until reaching the end again, where the reach ray of the microsprinkler corresponds to the last value above registered zero. The diameters and rains respectively same 1,33 mm and 55 L h-1, 1,48 mm and 70 L h-1 and 1,75 mm and 95 L h-1 had the water distribution profiles similar for all the heights and distances of the barriers, just differentiating the intensities of precipitations, and the reach rays of the microsprinkler. The water distribution profiles for all the mouthpieces and your respective rotors had values of precipitations same to zero for the physical barriers of different heights placed 1,0 m of distance, fact that due to the presence of barriers in the place of installation of a collector.

The occurrence of the Utetheisa ornatrix (L., 1758) is registered for the first time attacking Crotalaria spp. in Rio Largo country (12°40' S, 39°06' W, 127 m de altitude), Alagoas State, Brazil.

An experiment was carried out in the greenhouse of Plant Science Department at Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, during the period of may to june of 2007, with the evaluate the performance of rocket an green manuring. A completely randomized desings with seven treatments and four replications. The treatments consist of: (8,4; 16,8; 25,2; 33,6 e 42,0 g pot-1) plus two additional treatments (Control, 336g vaso-1 de bovine manure). The rocket cultivar grown was cv. Cultivada. The evaluated traits were: plant height, number of leaves per pot, dry mass and yield of grains. Increases in plant height, number of leaves yield mass and dry, per pot was the order of: 27,2%, 30,0%, 77,0 e 41,0%, respective. in function of amounts and scarlet starglory incorporated the soil.

The soil of the Paraiba, in generality, are acid and with low levels of available match, seriously limiting the income of the plants. A research in vegetation house was lead, with the objective to evaluate doses of calcareous soil and match in the culture of ricinus. The treatments had been composites for five levels of match: 0.0; 80; 160; 240 and 360 kg ha-1 of P2O5 and four dosis of calcareous rock: 0.0; 2.5; 3.5 and 4.5 t ha-1 in experimental delineation of blocks casualized with 4 factorial project x 3 (four levels of match and three doses of calcareous soil) more two treatments you add zero of match (0.0 P2O5: 2,5 t ha-1 of calcareous soil) and calcareous soil zero (240 P2O5: 0.0 t ha-1 of calcareous soil), with three repetitions. The calcareous soil reduced the acidity of the ground and effect of the application of the match (¿ 80 kg ha-1 of P2O5) in the presence of the collagen (¿ 2.5 t ha-1 of CaCO3) with of the calcareous soil (¿ 2.5 t ha-1 of CaCO3) in the presence of the match was not verified well (¿ 80 kg ha-1 of P2O5). The match applied in the absence of the calcareous soil was limited to the income of the culture of what the calcareous soil in the absence of the match.

The effects of the fertirrigation were evaluated with in nature vinasse on to microorganism of the soil. The soil was treated with three levels different from in nature vinasse (equivalent to 200, 400 and 600m3.ha-1), withhumidity maintained around 70% of c.r.a.. Para isolation and count of the total microorganisms (bacterias, mushrooms and actinomicetos) and microorganisms celulolíticos were used the methods of the dilutions in series. The population of mushrooms had a significant increase with addition of the level of in nature vinasse of 200m3.ha-1, and the population of bacterias only obtained increase starting from the 120 days of incubation, tends larger growth in the level of vinasse 600m3.ha-1. The number of actinomicetos of the soil had a significant reduction in all the levels standing out the one of 600m3.ha-1, already with relationship to the population of microorganisms celulolíticos an increase of in nature vinasse 200m3.ha-1 was verified.