Time filter

Source Type

De Souza R.G.,Instituto Capixaba Of Pesquisa | Mirazon Lahr M.,University of Cambridge
Applied Ecology and Environmental Research | Year: 2015

Subsistence links the behavioural and biological dimensions of human adaptability. We perform a cross-cultural investigation over an unpublished database containing approximately 2,700 ethnographic populations. The distribution of those Basic Economies is analysed by Latitude, Temperature and Rainfall. Results show unequal geographic distributions, although the climatic variables are not good discriminators in all cases. Two strategies (Food production with fishing/foraging, and Foraging/fishing) are distinct. The generalist form composed by extensive agriculture, coupled with foraging and fishing, is the most adaptable and widespread form of food acquisition. The exceptions are cold deserts, which foragers/fishers provide the best fit to the marginality concept. © 2015, ALÖKI Kft.

Culik M.,Instituto Capixaba Of Pesquisa | Ventura J.,Instituto Capixaba Of Pesquisa
Acta Phytopathologica et Entomologica Hungarica | Year: 2013

A new species of Diadiplosis, D. abacaxii sp. nov. (Diptera: Cecidomyiidae) is described and illustrated based on specimens collected in association with the pineapple scale insect pest Dysmicoccus brevipes (Coccoidea: Pseudococcidae) on Ananas comosus (L.) Merr. var. comosus (Bromeliaceae) in Espírito Santo, Brazil.

Culik M.P.,Instituto Capixaba Of Pesquisa | Ventura J.A.,Instituto Capixaba Of Pesquisa
Journal of the Entomological Research Society | Year: 2012

A new species of predatory cecidomyiid, Diadiplosis bellingeri sp. nov. (Diptera: Cecidomyiidae), is described and illustrated based on specimens collected in association with scale insects (Hemiptera: Coccoidea) on Coffea arabica (Rubiaceae) in Espírito Santo, Brazil. Diadiplosis bellingeri sp. nov. is distinguished from all other Diadiplosis species, by having the following combination of characters: maxillary palps 4-segmented with segments 2 and 3 subequal, claws unidentate, empodium rudimentary, cercus and hypoproct emarginate, gonostyli curved, and aedeagus triangular.

The reduction in natural sources of nutrients and the high cost of fertilizers have increased the search for new compounds for agricultural uses. Steel slag has high lime content and contains other important minerals for plant nutrition. This study aimed to evaluate the effect of increasing doses of steel slag on chemical changes of soil characteristics and on nutrients and level of heavy metals of sugar cane crop. The experiment was arranged in a randomized complete blocks design with three replicates and eight steel slag doses: 0; 0.5; 1.0; 2.5; 5,0; 10; 20; 40 t ha-1. An additional treatment with lime (2.5 t ha-1) was used. Steel slag increased soil pH, basis saturation and the levels of P, Ca, B, Fe and Mn; no changes on K and Mg levels were observed. None of the steel slag used increased level of Cd, Pb and Ni in the soil. However, Cr levels were significantly affected. On leaves and stalk, phosphorus was the only chemical influenced by increasing the doses of steel slag. An improvement of sugar cane productivity was detected.

Sudre C.P.,State University of Norte Fluminense | Goncalves L.S.A.,State University of Norte Fluminense | Rodrigues R.,State University of Norte Fluminense | Do Amaral Jr. A.T.,State University of Norte Fluminense | And 2 more authors.
Genetics and Molecular Research | Year: 2010

Capsicum species are very important in Brazil because of economic, cultural and biological factors, and the country is considered to be a diversity center for this genus. Collection and maintenance of the genetic diversity in Capsicum are important to avoid genetic erosion. Besides the identification of species, the characterization and evaluation of accessions maintained in gene banks are of fundamental importance. For this purpose, multivariate methods have become an important tool in the classification of conserved genotypes. The objectives of this study were: i) to identify and characterize accessions of the Capsicum spp collection and draw conclusions about the potential use of certain accessions in different production sectors; ii) to estimate the genetic divergence among accessions using the Ward-MLM procedure, and iii) to evaluate the efficiency of the analysis of continuous and categorical data using the Ward-MLM procedure. Fifty-six Capsicum spp accessions were evaluated based on 25 descriptors, 14 of which were morphological and 11 agronomic. Based on the qualitative descriptors, it was possible to identify all species and, together with the agronomic descriptors, genotypes could be indicated with potential for use in various production sectors. Five was determined as the ideal number of groups by the criteria pseudo-F and pseudo-t2. The Ward-MLM procedure allowed the differentiation of the species C. annuum, C. frutescens, C. baccatum, and C. chinense in separate groups. The Ward-MLM procedure showed some level of efficiency in clustering Capsicum species analyzing morphological and agronomic data simultaneously. ©FUNPEC-RP.

This experiment aimed to analyze changes in spatial behavior of the attributes of soil: clay dispersed in water (CDW), degree of flocculation (DF) and organic matter (OM) in areas occupied by native vegetation in natural regeneration and pasture. Soil samples were collected at a depth of 0.0-0.2 m in a grid with 64 sampling points, spaced at 10 m. The data were submitted to descriptive and geostatistics analysis. The highest values were observed for the CDW and the lowest values of DF in the pasture. All attributes show spatial dependence for the two areas of study, with adjustment of the spherical and exponential models. The preparation of thematic maps using the ordinary kriging allowed better visualization of the spatial variability of soil attributes.

The aim of this study was to evaluate mass production, nutrient contents and input of green manures used in the altitude region of Espírito Santo to the implementation of appropriate practice no tillage vegetables under organic management. This study also aimed evaluate the evolution of soil fertility as a consequence of two pre-crop maize and crotalária (February 2009 and October 2009) and two pre-crop oat and white lupine (July 2010 and May 2011). The experiments were carried in the INCAPER's Agroecology Reference Area at Domingos Martins-ES. Treatments consisted of a control (no straw) and three straw production systems: 1) cropping of grasses (oats or corn), 2) cropping legume (crotalária or white lupine) and 3) intercropping of grasses/legumes (corn/crotalária or oat/lupine). In February 2009, the production of green mass system corn and corn/crotalária reached 73.6 and 64.5 t ha-1, respectively. In July 2010, the production of green mass systems lupine and oat/Lupin reached 76.3 and 88.3 t ha-1, respectively. The green manures intercropping proved to be excellent management option for organic systems, because added 811.4; 941.2; 263.5; 78.6; 51.9 kg ha-1 of N, K, Ca, Mg and S, respectively, values those at or above the single pre-cultivation. The effects of pre-cultivation of green manure on soil chemical properties in organic management, except for the contribution of nitrogen, were similar to control in all seasons, because of the base fertilization with organic compost in all treatments, maintaining high fertility rates in the area.

Barroso M.V.,Instituto Capixaba Of Pesquisa | de Carvalho C.V.A.,Federal University of Santa Catarina | Antoniassi R.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária | Cerqueira V.R.,Federal University of Santa Catarina
Aquaculture | Year: 2013

High-quality live food is essential for reducing the frequent high mortality of newly hatched fat snook (Centropomus parallelus) larvae in hatcheries. Copepods, a rich nutrition source, cultivated with the microalgae Chaetoceros muelleri and Isochrysis galbana, were evaluated as food for 0-14-day-old larvae. Two experiments were performed using nine 50-L tanks stocked with 2500 embryonated fat snook eggs. Three different dietary (treatments) were tested in triplicate: Experiment 1, Treatment 1 (Control), using rotifers Brachionus rotundiformis (20 mL-1); Treatment 2 (Copepod), larvae were fed with Acartia tonsa (nauplii and copepodits, 0.1 mL-1); and Treatment 3 (Mixed), larvae were fed with A. tonsa (0.05 mL-1) and rotifers (10 mL-1). In Experiment 2 to increase the density of live food, food organisms and the phytoplankton were introduced into the experimental tanks with the embryonated eggs and were stocked: Treatment 1, 20 rotifers mL-1; Treatment 2, 0.5 copepods mL-1; and Treatment 3, 10 rotifers mL-1 and 0.25 copepods mL-1. In Experiment 1, the Mixed Treatment increased significantly the survival rate (16.0%±7.5%) and mean larval weight (0.84±0.05 mg) in relation to the other treatments. In Experiment 2, we observed significant improvements in larval notochord flexion in the Copepod and Mixed Treatment. The essential fatty acid profile of fat snook eggs had a DHA:EPA:ARA ratio of 11.4:2.4:1.0 while larvae in the Mixed and Copepods Treatments had ratios of 2.5:1.9:1.0 and 5.5:1.9:1.0, respectively. We conclude that the survival, development and the relationship between the major fatty acids were improved in treatments with copepods. © 2013 Elsevier B.V.

de Souza Z.M.,University of Campinas | de Souza G.S.,Instituto Capixaba Of Pesquisa | Marques J.,São Paulo State University | Pereira G.T.,São Paulo State University
Ciencia Rural | Year: 2014

The objective of this study was to analyze different intensities of soil sampling for accuracy in geostatistical analysis and interpolation maps for precision agriculture in the sugarcane area. Soil samples were collected at two regular grids at a depth of 0.00 to 0.20m for granulometric analysis (area 1) and soil fertility (area 2). We compared soil sampling intensities: 208, 105, 58 and 24 points in Area 1 and 206, 102 and 53 points in Area 2. The data were submitted to descriptive analysis and geostatistics. The variograms constructed with 105 points didn't differ from variograms with 208 points, which doesn't occur for 58 and 24 points. The increase of sampling interval and reducing the number of points promote greater error in kriging. Samples with more than 100 points per area did not result in significant improvements in the error of kriging, or differed in the amount of fertilizer applied to the field.

Serrano L.A.L.,Instituto Capixaba Of Pesquisa | Cattaneo L.F.,Instituto Capixaba Of Pesquisa | Ferreguetti G.A.,Agricola da Caliman Agricola S A
Revista Brasileira de Fruticultura | Year: 2010

The objective of this work was to define the appropriate doses of a controlled-release fertilizer in the production of papaya seedlings, in the state of Espirito Santo, Brazil. The research was realized in a greenhouse in Caliman Agricola Company, Linhares- ES, Brazil. The experimental design was a randomized complete block in a factorial scheme 5x6. It was evaluated five papaya genotypes 'Golden', 'Calimosa', 'Tainung 01', 'INCAPER 09' and 'INCAPER 39', cultivated in commercial substrate (constituted of pinus bark and vermiculite) fertilized with six doses of controlled-release fertilizer formula NPK + (Mg) 13-06-16 + (1.4): 0.0; 2.5; 5.0; 7.5; 10.0 and 12.5 kg m-3. Differences in growth and nutritional status of papaya seedlings were observed according to the genotype and the dose of the controlled-release fertilizer used. The highest values for height and total dry matter of papaya seedlings occurred with the doses: 11.2 and 11.3 kg m-3 for 'Golden'; 7.7 and 7.9 kg m-3 for 'Calimosa'; 11.6 and 10.9 kg m-3 for 'Tainung 01'; 10.5 and 10.6 kg m-3 for 'INCAPER 09' and 11.0 and 9.6 kg m-3 for 'INCAPER 39', respectively. In the same doses the papaya seedlings showed adequate levels of nutrients.

Loading Instituto Capixaba Of Pesquisa collaborators
Loading Instituto Capixaba Of Pesquisa collaborators