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Com o objetivo de avaliar os potenciais produtivo e genético de clones de batata-doce, visando à seleção de materiais genéticos mais produtivos, com caracteres que facilitem o manejo, foi desenvolvido um experimento, no ano de 2007, composto por nove clones e duas variedades, no delineamento em blocos casualizados, com três repetições. Avaliaram-se seis características da parte aérea e quatro das raízes. O clone 6 obteve a maior produtividade de raiz comercial, com 12,08 t ha-1. Os clones 8, 14 e a variedade Rainha Prataapresentaram as maiores produtividades de fitomassa da parte aérea, com 5,42; 5,17 e 5,83 t ha-1, respectivamente. O clone 11, além de produzir 9,08 t ha-1 de raiz comercial e 4,02 t ha-1 de fitomassa da parte aérea, apresentou também comprimento e diâmetro do entrenó favoráveis às práticas de manejo. As produtividades de raiz comercial e as de fitomassa da parte aérea além do comprimento do entrenó apresentaram as maiores 2G s e 2 sE , CVG, h2 e índice de variação (b) favoráveis para se obter ganhos genéticos satisfatórios com aseleção. Dessa forma, os clones 6 e 11 apresentam características interessantes a serem exploradas por técnicas seletivas nas futuras etapas de melhoramento dessa cultura.With the objective to evaluate the yield and genetic potential of sweet potato clones, aiming at the selection of more productive genetic material, with traits that facilitate tillage, an experiment was conducted in 2007, composed of nine clones and two local varieties, in a completely randomized block design with three replications. Six traits of the shoot and four traits of thestorage roots were evaluated. Clone 6 had the highest marketable root yield, with 12.08 t ha-1. Clones 8, 14 and the “Rainha Prata” variety had the highest shoot phytomass yield, with 5.42, 5.17 and 5.83 t ha-1, respectively. Clone 11, in addition to producing 9.08 t ha-1 of marketable root and 4.02 t ha-1 of shoot phytomass, also featured favorable internode length and diameter for the practice of tillage. Marketable root and shoot yield and the length of internode presented the highest and favorable 2G s and 2sE , CVG, h2 and variation index (b) to obtain satisfactory genetic gains from the selection. Thus, clones 6 and 11 presented interesting traits that could be exploited by selective techniques in future stages of breeding program of this culture.

The use of spontaneous species as green manure en the rocket production has been produce satisfactory results. The experiment was carried out at a greenhouse of Plant Science Department of the Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, in the period of 2008, with the objective of determing of different decomposition times of malva veludo rocket production. A completely randomized desings with six treatments and four replications. The treatments consist of: (7 days incorporated), T2 (incorporated 14 days); T3 (incorporated 21 days); T4 (incorporated 28 days); T5 (incorporated 35 days); T6 (fertilized soil). The evaluated traits were: plant height, number of leaves per pot, dry mass and yield. The time of decomposition of 14 days was what provided the best rocket production.

An experiment was carried out at a greenhouse of Plant Science Department of the Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, in the period of May to June of 2006, with the evaluate the agronomic performance of beans mungo in function of their times of decomposition of scarlet starglory incorporated. A completely randomized desing with six treatments and five replications. The treatments consist of: T1 - 130g pot-1 of scarlet starglory in green base fresh with twenty-eight days incorporated; T2 -130g pot-1 of scarlet starglory in green base fresh with twenty one days incorporated; T3 - 130g pot-1 of scarlet starglory in green base fresh with fourteen days incorporated; T4 - 130g pot-1 of scarlet starglory in green base fresh with seven days incorporated; T5 - 130g pot-1 of scarlet starglory in green base fresh with zero days incorporated; T6 - Control (no Fertilized soil). The beans mungo cultivar planted was green gold. The evaluated traits were: plant height, dry mass and yield of grains. All the times traits were significantly affected by the amounts of scarlet starglory incorporated. Height mean value for plant height, dry mass and yield of grains were obtained in the amount of scarlet starglory incorporated of 28 days.

An experiment was carried out at a greenhouse of Plant Science Department of the Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, in the period of May to June of 2008, with the evaluate the agronomic performance of rocket in function of their times of decomposition of Ipomoea asarifolia incorporated. A completely randomized desing with six treatments and four replications. The treatments consist of: T1 (45 days incorporated); T2 (30 days incorporated); T3 (15 days incorporated); T4 (0 days incorporated); T5 (336g vaso-1bovine manure); T6 (Control no fertilized soil). The rocket cultivar grown was cv. Cultivada. The evaluated traits were: plant height, number of leaves per pot, dry mass and yield of grains. All the times traits were significantly affected by the amounts of Ipomoea asarifolia incorporated. Height mean value for plant height, dry mass and yield of grains were obtained in the time 11,8 days incorporated of 18,3 days for number of leaves.

The objective of the present experiment was evaluate the effect inter cropping systems with the culture of the maize on the production components, aiming at to maximize the grain production and to increase availability of pastures for animal feeding. The treatments had consisted of the culture of DKB-950 maize (Hybrid Simple Modified), on three grassy species of (Brachiaria decumbens, Brachiaria brizantha and Panicum maximum cv. Tanzania) inter cropping systems and conventional tillege of soil. In foundation one applied 0, 35, 50 and 4 kg ha-1 of N, P, K and Zn respectively in the sulphate form of ammonium, simple superphosphate, potassium sulphate and zinc Sulphate. In covering it applied if 120 kg ha-1 of N. the used espaçamento was of 0,80 x 0,20 m, The experiment was arranged in a randomized complete block design, with four repetitions. The components of the production of the maize had not been affected by the studied systems of inter cropping, except for the number of spikes and production of grains, where the maize cultivated inter cropping systems with Brachiaria decumbens (4.787 kg ha-1) was better that the Tanzania (3.683 kg ha-1). The accumulation of dry mater presented significant difference between the treatments, in the which Tanzânia presented greater accumulates of dry mater.

Aiming the characterization of genotypes and estimate the genetic divergence through morphological markers of the sweet-potato, an experiment was developed, in the year 2007, in the municipality of Junqueiro, in the Alagoas State, composed of nine clones and two local varieties, in the randomized complete block design with three replications. Were evaluated fourteen characteristics of the aerial part and seven of the roots through morphological descriptors. For the assessment of genetic divergence was used the methodology of the principal components made by the group and the methodology of Tocher. It was wide phenotypic variability among genotypes based on morphological markers. The results showed that the first three components of the variables of aerial part explain 77.08% and in the first two components of the root system of variables explain 72.13% of the variability exists. Six groups were formed, being that group I restrained three genotypes, the groups II, III and IV have been formed by two genotypes each, and the groups V and VI contain a genotype each. The results indicate; using the two methodologies, have wide phenotypic and genotypic variation among genotypes of sweet potato-based on morphological descriptors, indicating prospects for the breeding program of this culture.

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 aim of this paper was to evaluate the genetic divergence of a melon population of the Plant Breeding Program from the Federal University of Alagoas. The following quantitative characteristics were evaluated: the fruit weight (FW), the longitudinal fruit (LFL) and transversal fruit (TFL) lengths; the skin (SFT) and the pulp¿s (SPF) thicknesses; and number of seeds (NSF). For the evaluation of the genetic divergence, a multi varied analysis was used by means of the main component method, which graphical dispersion was done from the two first components and from the euclidean distance average standardized, being that the grouping among the similar families done by the Tocher Method. The results suggest genetic divergence among the families, indicated by the two techniques used. The two first main components were able to explain 72.36% of the existing variability, being the TFL and FW variables which contributed more to the divergence. Considerable genetic divergence among the families was verified and that some of these are promises for use in genetic improvement programs.

An experiment was carried out at a greenhouse of Plant Science Department of the Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, in the period of May to June of 2006, with the objective of determing the best treatment with scarlet starglory (Merremia aegyptia L.) incorporated to with soil on rocket performance cv. Folha Larga. A completely randomized desing with six treatments and four replications. The treatment consist of: T1 - 19g pot-1 of scarlet starglory in green base plus; T2 - 28g pot-1 of scarlet starglory in green base plus; T3 - 37g pot-1 of scarlet starglory in green base; T4 - 46g pot-1 of scarlet starglory in green base; T5 - 55g pot-1 of scarlet starglory in green base; T6 - Fertilization with NPK at the recommended dose for the crop and. The rocket cultivar grown was Folha Larga. The evaluated traits were: plant height, number of leaves per pot, shoo fresh and dry mass. All the evaluated traits were significantly affected by the amounts of scarlet starglory incorporated. Height mean value for plant height, shoo fresh, dry mass and number of leaves were obtained in the amount of scarlet starglory incorporated of 19 g pot-1.

Aiming to evaluate the genetic divergence among castor bean accessions through collections of racemos with seeds of ten municipalities in the State of Alagoas in the year 2007. The variables were analyzed: weight of 100 seeds (W100), weight of the 100 seed coats (WC100); transversal (TLS) and longitudinal lengths of the seed (LLS); raceme length (LR); e content oil of the seeds (OCS). For the evaluation of genetic divergence was used the principal components analysis and the cluster were made using the Tocher method. Phenotypic correlations between the variable and the altitude (ALT) of the collection places were also carried through. Exist significant divergence between the accessions, indicated for the two first principal components, that explained 82.15% of the existing variability. The variables W100 and WC100 were those that more contributed for the observed divergence. Four groups were formed by Tocher' methodology, showing possibilities of future works to explore the variability found in castor bean accessions. The correlations were positive between some variables, like the altitude, that seems to have especially influenced the W100 variable, but not on OCS.

O experimento foi conduzido na casa de vegetação do Departamento de Ciências Vegetais da Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró-RN, no período de agosto a outubro de 2008, com o objetivo de avaliar as quantidades de flor-de-seda em diferentes tempos de decomposição no desempenho agroeconômico de rúcula cv. Cultivada. O delineamento experimental utilizado foi inteiramente casualizados, com seis tratamentos e quatro repetições. Os tratamentos foram representados por: T1 (flor-de-seda incorporada aos 45 dias), T2 (flor-de-seda incorporado aos 30 dias); T3 (flor-de-seda incorporado aos 15 dias seca); T4 (flor-de-seda incorporado ao 0 dias); T5 (336g/vaso de esterco bovino) e T6 (Solo nú). As características avaliadas foram: altura da planta (cm), número de folhas por parcela, massa da matéria verde (g) e massa da matéria seca (g) por parcela. O tempo de decomposição de 0 e 15 dias foi o que proporcionou os maiores incrementos em altura de plantas, rendimentos de massa seca, verde e número de folhas respectivamente.

Due the fast growing in flowers and ornamental plants production and their high export potential, it is important to identify the insects species associated with Alpinia purpurata (Vieill.) K. Schum crops and to establish their role in this agroecosystem/production system The insects were collected from A. purpurata cv. Pink Ginger and Red Ginger plants cultivated in two farmswith different agroecological characteristics, located in two recognized tropical flower production areas/regions, Maceió and Río Largo cities/localities, Alagoas state, during one year. They were identified and its frequency analyzed according with a numerical scale. According to the results was collected 790 insects of which 69 were identified to specific level, belonging to 59 families of 9 ordens. Results showed Hymenoptera individuals as the most frequent, mainly predator ants and/or associated with phytophagous insects (sucking), besides natural enemies, followed by Hemiptera and Lepidoptera orders, which involved recognized agricultural pests. Insects belonging to the order Odonata and Orthoptera were found less frequently.

A field experiment was developed in the period of April of 2000 to May of 2002, at the Experimental Station of Jiqui pertaining to the Empresa de Pesquisa Agropecuária do Rio Grande do Norte - EMPARN, Parnamirim city, state of Rio Grande do Norte. The work had as objective to evaluate the effects of nitrogen and potassium applied through irrigation water on the vegetative behavior and productive of green dwarf coconut tree (Cocos nucifera L). The treatments had consisted of the combination through the experimental matrix of Pan Puebla III, 5 doses of N and 5 doses of K2O both oscillating of 135 the 2565g plant -1 year -1 derived of the urea and potassium chloride. The used experimental design was of blocks at random with 4 repetitions and 5 plants for plots totalizing 40 experimental units. The plantation was made in the triangular spacing of 7.5 m between plants and 7.5 m between lines. During the 5th year of culture, from April of 2001 to May of 2002 was quantified the number of fruits in the 13 harvest carried out. The referring variables to the vegetative development, height and circumference of stem, diameter of the top and leaf number, had been measured in May of 2002, in the end of the experiment. The stem circumference increased linearly with the increase of the doses of N and of quadratic form with the doses of K with the biggest value for the dose of 1350 g plants -1 year-1. The leaf number answered only the nitrogen applications. The growth in stem height had influence of N and K, however, data did not adjust to no mathematical model. The diameter of the top of the green dwarfed coconut palm did not suffer significant interference of no applied fertilizer through irrigation water. The number of fruits increased quadratically with the N and K doses. The maximum physical efficiency of the production, 154.75 fruits plants -1 year -1, it was reached with the doses of 1437 g plants -1 year -1 of N and 1553 g plants -1 year -1 of K.

The objective of this work, the performance of three varieties of soybean on "Tabuleiros Costeiros" State of Alagoas. The installation of the experiment occurred on March 20, 2006, picking up the parcels on 26 August 2006. The experimental design was a randomized blocks with seven repetitions. The experimental plots consisted of ten rows of 4.0 m in length, spaced 0.50 m. In ten plants per plot were marked certain height of the plant in full bloom stage R2 and point of harvest stage R9 considering the distance between the soil surface and apical end of the main stem, the body weight of 100 seeds, grain production and dry weight in (kg ha-1) which are calculated from the production harvested per plot. The soybean plants of three varieties showed height below the minimum required for mechanical harvesting. The three varieties yield or more of the traditionally producing. The average of dry matter accumulation obtained show the variety BRS Tracajá as a good option for the production of forage.

The study aimed to: assess the effects of plant densities in the behavior of genotypes of maize; Select the genotypes of greater adjustment and grain yield and better density of planting in the municipality of Rio Largo-AL. It was evaluated the genotypes: UFAL-1, UFAL-4, UFAL-5, UFAL-7, Sertanejo, Cruzeta and AL-30, and the densities: 55,555, 66,666, 77,777 and 88,888 plants.ha-1. Used randomized block design scheme in a split plot with three replicates. The plots (4 rows 18mx0, 9m) was formed by genotypes and the subplots (4.5 mx0 ranks, 9m) by densities, with one plant per pit. It was determined the variables: plant height and insertion of the 1st spike, the stem diameter, ear size and number of rows of grain in ear, index of ears and yield. The density of planting of 55,555 plants.ha-1 improved performance in the variables, plant height, diameter of the stem, size of the ear, index of spike and grain yield in genotypes; Genotypes AL-30 and UFAL-4 outperformed the others in grain yield; Low correlation of the variables studied with the yield; Lack of water during the flowering to maturity of the grains meant that the genotypes expressing its full potential.

This research aimed to study competition effects of legumes intercropping and weeds on seeds yield and quality of Sorghum bicolor (L.) Moench. The experiment was carried out in a Rhodic Nitisol, under field condition in Botucatu region, São Paulo State, Brazil. Ten treatments were tested: sorghum (cv. A-6304) intercropped with Dolichos lablab L., Mucuna aterrima (Piper et Tracy) Holland, Canavalia ensiformis D.C. or Crotalaria juncea L., that were sown in the same time of sorghum or 20 days after the sorghum sowing, and sorghum weed-free and sorghum without weeding. The experimental design employed was the completely randomized blocks with four replications. There were evaluated sorghum seeds yield and some characteristcs of seed quality: purity, hectolitric weight, 1000 seeds weight, insect infestation, germination and vigor (by first counting of germination test and accelerated ageing test). The competition caused by legumes intercropping and weeds affected the yield and the physical and physiological characteristics of sorghum seeds, but the intensity of prejudicial effects depended on the time and the species of legume intercropping.

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 objective of this research was to evaluate the effect two hybrids of maize, cultivated on "safrinha" conditions, in different rates of 08-28-16 formula. The treatments consisted of two hybrids of maize (DKB747 e CO32) cultivated in no-tillage system (SPD) and five rates of fertilizer 08-28-16 (100, 200, 300, 400 e 500 kg ha-1). The randomized block design was used, with subdivided splots and four replications. The maize was sowed on 02/03/2006 using seeder pneumatic of mechanics traction, with four individual lines, spaced of 0.45 m During maize flowering period, morphologic components were evaluated; the harvest occurred on 150 days after the sowing, when the production components were evaluated. The hybrid of maize DKB747 showed greater efficiency, while the hybrid of maize CO32 was more responsive to rates used. NPK rates on 08-28-16 formula above 300 kg ha-1 are not necessary to the hybrid CO32 cultivated on "safrinha" conditions, in Botucatu region, state of São Paulo.

Using data from basic speeds of infiltration (VBI), obtained in soils of Coastal Tabuleiros the city of Mal. Deodoro, for aluminum and speed of infiltration for projects (VIP), calculated using the techniques Fashion (Mo), Medium Harmonic (MH), Geometric (MG), simple arithmetic (MAS), Quadrática (MQ), Cúbica ( MC) and Biquadrática (MB), in addition to the Median (Md), was carried out studies on water-saving irrigation by sprinkling compared to the volumes obtained on the basis of these techniques and there is the potential for the runoff. It was the conclusion that the economy of water increased in the following order of technical definition of VIP: MB, MC, MQ, BUT, MG, Md, MH, Mo. Thus, the technical definition of the VIP which saves more water for irrigation is the Fashion.

Manihot pseudoglasiovii is considered an excellent forage, as for its nutritional value as for the high degree of palatability. Like as other native plants of the semiarid regions it, can be considered a resource of important strategical use. It is an alternative not only for the dry period the entire year, in a conservation system. This work had as objective of study the growthof maniçoba in relation is density (1,5 x 1,5 and 2 x 2) and fertilization (manure of bovine, goat/sheep and without fertilization). It was used an experimental desing of blocks casualizaed with treatments distributed in 2 x 3 factorial. The experiment was out through in the Department of Zootecnia of Center of Agrarian Sciences of the UFPB, in Campus II in Areia-PB. There had been evaluated morphologic characteristic (Height of plant, diameter of caule, area of the pantry, leaf number and number of bifurcations) and productive characteristic (leaf production, production of branches, production of total fitomass substance and total dry substance)The analyses of variance were made employng the SAEG program. The and analyses of regression of the morfological characteristics on the time. Were mande visig SAEG program too. In accordance with the results obtaimed in this study, the different densities had not presented significant difference. However by total production for area the results were favorable to the higher density (1.5 x 1.5). Already the fertilizations with bovine and goat/sheep manures, although had shown no between them difference, had present statistical difference from treatment without fertilization, shoung higher pr.

O presente trabalho teve por objetivo avaliar os efeitos de concentração e intervalos de aplicação de biofertilizante nos componentes de produção de milho. O trabalho foi realizado, em condições de campo, na Escola Agrotécnica do Cajueiro, no Centro de Ciências Humanas e Agrárias (CCHA), pertencente à Universidade Estadual da Paraíba; O delineamento Experimental utilizado foi o de blocos casualizados, com 09 tratamentos, num esquema fatorial 3x3, com 4 repetições, contendo 26 plantas por unidade experimental, totalizando 234 plantas/bloco e 936 plantas experimentais. Foram estudados os efeitos de 3 concentrações de biofertilizante (C1 = 1% ou 10 ml L-1; C2 = 2% ou 20 ml L-1 e C3 = 3% ou 30 ml L -1) e de 3 intervalos de aplicação (I1 = 5 dias; I2 = 10 dias e I3 = 15 dias). A adubação foi iniciada 15 dias após a germinação. O presente trabalho permitiu as seguintes conclusões: A Utilização de concentrações de biofertilizante em até 30 ml/L não afetou significativamente as variáveis de crescimento e de produção do milho; A concentração de biofertilizante de 30 ml/L evidenciou maiores valores de diâmetro transversal da espiga, peso verde da raiz e peso seco da parte aérea da planta, embora estatisticamente não significativos; A produção do milho teve um melhor desempenho com a aplicação de biofertilizante na concentração de 20 ml/L mais notadamente no número de espigas por planta; O crescimento da planta teve um melhor desempenho quando foi aplicado o biofertilizante no intervalo de 15 dias.

Com o objetivo de obter equações que, através de parâmetros lineares dimensionais das folhas, permitisse a estimativa da área foliar de juazeiro, estudaram-se relações entre a área foliar real e parâmetros dimensionais do limbo foliar, como o comprimento ao longo da nervura principal (C) e a largura máxima (L), perpendicular à nervura principal. As equações lineares simples, polinomiais e potencias obtida podem ser usadas para estimação da área foliar. Do ponto de vista prático, sugere-se optar pela equação linear simples envolvendo o produto C x L, considerando o coeficiente linear igual a zero, a qual apresentou a menor Soma de Quadrados do Resíduo. Desse modo, a estimativa da área foliar de juazeiro pode ser feita pela fórmula AF = 0,7931 x (C x L), que equivale a tomar, 79,31% do produto entre o comprimento ao longo da nervura principal e a largura máxima, com um coeficiente de correlação de 0,9937.