This work was carried out from october to december, 2005, in Agropolo Assu-Mossoró region, RN, Brazil, with the objective of evaluating the effect of nitrogen and potassium doses on fertilization efficiency of melon crop. Three simultaneous trials were performed in adjacent areas, each one receiving a different water amount (L1=0.76NTI, L2=0.9NTI and L3=1.04NTI). Experimental design was a randomized blocks in a factorial scheme with three replications. Treatments consisted of combination of three doses of both nitrogen (N1=42, N2=84 and N3=126 kg ha-1) and potassium (K1=106, K2=212 and K3=322 kg ha-1), plus two additional treatments (N2K0 e N0K2), applied only with intermediary water amount. N2 e K2 was the levels recommended for melon. Indexes of agronomic efficiency of fertirrigation were determined for nitrogen, potassium and irrigation depths. Agronomic efficiency was influenced by N and K doses, irrigation depths and by factor interaction. Treatments L3N1K1 (305.57 kg kg-1) and L3N2K1 (132.63 kg kg-1) presented higher efficiencies for fertirrigation with nitrogen and potassium, respectively.

The experiment was carried out at Universidade Estadual Paulista - UNESP, Jaboticabal, SP during the period of March to May of 2006, with the objective of evaluating the production cost and profit margin of crespleaf lettuce cv. 'Verônica' and American lettuce cv. 'Lucy Brown' in sole crop and intercropping with rocket cv. 'Folha Larga'. The determination of the production cost was based on the total operational cost. The estimate of the operational cost for crespleaf and american lettuces and rocket in sole crop were about R$ 5, 446.42; R$ 4, 923.25 and R$ 3,829.84, respectively. The estimate of the total operational costs of crispleaf lettuce x rocket and American lettuce x rocket intercrops were about R$ 7,195.46 and R$ 6,041.38 per hectare. Higher operational profits were observed in intercropping systems, being highest in the american lettuce x rocket intercrop, with R$ 45,437.68 per hectare.

With the objective of increasing the percentile of rooted cuttings and the quality of the newly formed root system through the treatment of cuttings with AIB and sucrose, the present study took place. The experiment was conducted in an intermittent mist chamber located in the experimental orchard at UFLA, in Lavras, MG. The herbaceous cuttings of cv. Paluma were collected in the orchard of UFLA in March of 1999. The prepared cuttings with 2 nodes and 1 pair of leaves reduced to half were treated with AIB in immersion for 24 hours at concentrations of 0, 100, 200 and 300 mg.L-1, 2% sucrose being added or not. After the treatment the cuttings were planted in polyethylene sacks with sand as a substrate. The layout used was it entirely casual with 4 repetitions and 15 cuttings per plot. From the evaluations it was concluded that: a) the concentration of 300 mg.L-1 of AIB provided the best result for the percentage of rooted cuttings as well as for the number and average weight of the dry root matter. b) The presence sucrose didn't present a significant effect on the characteristics analyzed. c) The simple permanence of the leaves on the cuttings didn't influence their rooting. d) In those cuttings treated with 300 mg.L-1 of AIB, it was not necessary for the leaves to persist for 60 days.

The growth of the melon "pele de sapo" was studied under different irrigation depths and doses of nitrogen (N) and potassium (K), in Mossoró-RN, Brazil, in the year 2004. Three experiments were accomplished simultaneously. In each experiment was used a different depth (L) and eleven treatments. The experimental design was a completely randomized block in a factorial scheme 3 x 3 + 2, with 3 replications. Factors studied were three levels of N (N1, N2 and N3), three of K (K1, K2 e K3) plus two additional treatments (N0 with K2 e N2 with K0). The doses of K did not influence significantly in the appraised characteristics. During the cycle of the culture it was verified for L that leaf area index (IAF) and dry mater of the aerial part (FSPA) presented cubic response. Mean maximum values were 1,73 cm2 cm-2 at 64 DAS for IAF and 336,92 g at 70 DAS for FSPA. For factor N the response was linear with dose N0 and cubic with doses N1, N2 and N3 for IAF and for FSPA, which presented mean maximum values of 1,77 cm2 cm-2 and 344,27 g, at 64 and 70 DAS, respectively.

Three experiments were conducted in the agricultural year of 2007, aiming to estimate the genetic divergence, using the Mahalanobis' generalized distance, and the test of competition of six populations of corn in the municipalities of Arapiraca, Rio Largo and Viçosa, of Alagoas State. The experimental was in the randomized blocks design with seven treatments and four repetitions. There was the formation of two different groups where, it was conclued that is small genetic divergence between the populations of corn. A group was formed by six populations and the other group by the "Asa Branca" variety. The people "Viçosense" and "Rio Largo" were closer genetically (D2 = 1.70), while the longest distance has been detected among the population Alagoano and witness Asa Branca (D2 = 67.27). The average yield of grains ranged from 2,885 kg ha-1 to 3.461 kg ha-1 in the "São Luiz" and "Viçosense" populations, respectively, with overall average of 3,207 kg ha-1, although not statistically differ.

The present work had as objective accomplishes study of environmental zonamento of the Areas of Permanent Preservation (APP's) of Martins' city, located in Oeste Potiguar's mesoregion and microrregion of Umarizal, in the State of Rio Grande do Norte, located in the mountainous area of the state and with a tourist potential fort, for your pleasant climate, trails and observatory for a beautiful view of the mountain, where she looked for to identify the principal problems related with the use and the improper appropriation of the natural resources, through the characterization in cartographic documents, guided by the effective environmental legislation, that serve as base for the electric outlet of decisions with relationship to the occupation of the surface of the municipal district. The maps, in the scale of 1:100.000, with the delimitacion of APPs were generated with I aid of SIG, satellite images in colored composition and vectorial files in consequence qualitative and quantitative visual illustrative enrichment, originating a database that will subsidize possible interventions in the area. The conclusions were significant and they got attention for the following situations: APP's occupy 32,62% of the area of the municipal district, limiting the use and occupation of the soil, already APP of Top of Hill that embraces an area 25,52% of the municipal surface.

In the North of Minas Gerais the equineculture is an important activity because it corroborates the success in the breeding of beef cattle. The equine verminosis control in this region has not been applied considering the anthelmintic resistances of nematodes and this resistance has been observed in some equine herds in Brazil. The present study has the objective to evaluate the effectiveness of pyrantel pamoate and ivermectin association in mare verminosis in the North of Minas Gerais, during the peripatum. After fourteen days of the first faecal egg count (FEC) and treatment of the animals with these respective bases, the FEC reduction test indicated 98.1% effectiveness and the coprocultures were negative. After the worm identification from the control group, was observed 30% of filariod worms of Strongyloides spp., 30% of the genus Haemonchus, 20% were worms of Cyathosminae, 10% of the genus Trichostrongylgys and 10% of the genus Oesophagodontus. The results observed suggest that the use of pyrantel pamoate associated with ivermectin was safe during the peripartum and efficient in the FEC reduction of naturally infected mares raised in pastures of the North of Minas Gerais.

In order to investigate the influence of baited-trap color on fruit fly attraction, two McPhail trap models were used to monitor the insect in peach trees. One of the models was constructed of clear plastic, while the other had a clear top and a yellow bottom (base). The traps were installed in pairs, on five plants spaced 30 m apart. Traps were monitored twice a week from 12/20/2005 to 01/13/2006, with trap rotation at each evaluation, switching trap position in the tree. The yellow-bottomed McPhail traps were not superior to the clear ones during the evaluations, and no fruit fly capture increases were observed due to the yellow color.

The passion fruit tree (Passiflora edulis Sims f. flavicarpa Deg.) is a fruitful tree whose the propagation usually is made for seeds. With the objective to study the possible effects allelopathy of neem in the physiologic aspects in germination of seeds of passion fruit in the different periods of storage. Was carried at UFERSA. For the acquisition of powder of neem, it was used plants located in institution. In the obtaining of seeds of passion fruits, it was used in natura fruits bought in the local supermarket; this seeds were extracted of fruits for fermentation. It was placed 50g of seeds of passion fruits together with each measure of powder of leaves of neem (0; 0,25; 0,50; 0,75; 1,0 g of powder of leaves of neem / 50 g of seeds of passion fruits). It was utilized the randomized design in esquire of portions subdivides, where the portions was composed of five dosages of powder of leaves neem.

The objective of this study was to evaluate the performance of Litopenaeus vannamei postlarva submitted to different substitution levels of fish meal protein by meat and bone meal protein. A completely randomized design, in a 4x2 factorial arrangement was used. The first factor was substitution levels of fish meal protein by meat and bone meal protein (0, 25, 50 and 75%); and the second factor was the use of a commercial attractant (with and without). The system consisted of 40 plastic boxes with 50 L each, provided with aeration, biofilter and shelter for the shrimps, with water from a low salinity well combined with 1% of effluent from low salt water dessalinization. It was evaluated shrimp final weight, weight gain, feed consumption, feed conversion rate and survive. It was observed that shrimp performance decreased with the increasing on substitution levels of fish meal protein by meat and bone meal protein; and the presence of commercial attractant on feeds resulted on higher final weight and weight gain, in relation to feeds without commercial attractant.