cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14276929
title: Environmental performance of aquaculture in Rondônia state, Brazil

description: The objective of this study was to analyze the environmental performance of aquaculture in the city of Colorado do Oeste, Rondônia State, Brazil. Fifteen fish farmers were interviewed. For data collection, structured interviews were carried out, using a questionnaire based on information supplied by the United Nations Food and Agriculture Organization (FAO). The questionnaire considered 12 items, organized into three main topics: a) social and legal standards b) environmental standards c) standards of food safety and hygiene. The questionnaire considered 12 items, organized into three main topics: a) social and legal standards b) environmental standards c) standards of food safety and hygiene. Aquaculture in the city of Colorado do Oeste, Rondônia presents two fish production systems: extensive and semi-intensive. In the semi-intensive system, stocking rate was one fish per m3, on average; tambaqui (Colossoma macropomum), tilapias (Oreochromis spp.), pirarucu (Arapaima gigas) and pintado (Pseudoplatystoma spp.) were the species farmed at the largest number. The rate of water renewal was due to the greater availability of natural food in this system. Water renewal was constant in the ponds (1,500 liters per minute). In the semi-intensive system using dug ponds, alevins were stocked and fed during the entire rearing time with natural and exogenous food. The extensive system relied on the natural production of the pond, with stocking density limited by the production of natural food. The little renewal of water made the cultivation tank itself acted as a decantation lake, with the occurrence of oxidation and sedimentation of residual organic matter, consisting of feces, debris and organic fertilizer. Production of reduced effluent volume took place in the extensive system, compared to the cultivation area. In addition, there was high water turbidity, caused by high concentration of planktonic organisms, and low concentrations of dissolved oxygen in the water. Data showed that nine estates of the interviewed fish farmers had critical environmental performance (less than 30.0%). Six estates of fish farmers had bad environmental performance (between 30.0 and 50.0%) (Coefficient of sustentainability = green square x 100 ÷ Total Questions less the yellow squares)
DOI: 10.6084/m9.figshare.14276931
title: Effect of acidification on the physicochemical and functional properties of mango seeds starch (Mangifera indica L.), Tommy Atkins Variety

description: In the industrial processing of mango, the by-products, stone and shell are usually discarded without its proper use. The objective of this study was to investigate the physicochemical and functional properties of native and acidified starch separated from mango kernels, Tommy Atkins variety, searching for a new source of starch, ways to improve it and contribute to the use of residue food industry. The kernels were removed manually and the extraction of starch proceeded. The native starch was acidified with hydrochloric acid. It was detected the chemical composition of native starch. - We also determined the functional and paste properties of native and acidified starch. For the chemical composition the native starch presented 71.56% starch, 7.30% lipids and 5.6% proteins. The native and acidified starches showed low resistance to high temperature, with maximum swelling at 75oC, their values being 9.395 and 6.861 g/g, respectively. The solubility was found to be increasing as the temperature was elevated and its maximum value 48.03% for acidified starch. The native starch exhibited greater capacity to absorb water, oil and paste clarity. This starch also showed a higher peak viscosity, hold, breakdown, final viscosity, setback and paste temperature than acidified starch. The native starch can be indicated to form dehydrated soups and meat products while the acidified starch can be used in frozen and chilled food and candy industry.
DOI: 10.6084/m9.figshare.14276921
title: Analytical determination of the performance of free draining, sloping furrow irrigation

description: An analytical solution was developed to evaluate free-draining sloping furrows based on Walker and Skogerboe (1987) volume balance approach. Its application allows the mathematical calculation of a system performance, instead of constructing graphs that define the evaluation parameters. The mathematical solution is based on fitting equations to potential models, calculating the areas under the curves defined by the fitting and on curve intersection, , from which the system performance is obtained. To validate the methodology, we conducted a field experiment at the Experimental Farm of the Federal University of Ceará, in the municipality of Pentecoste, belonging to the Center of Agricultural Sciences, where field data were analyzed by the two methods. The results showed that the analytical methodology can be used to evaluate the free draining sloping furrows irrigation.
DOI: 10.6084/m9.figshare.14276933
title: Sanitization by Chlorine compounds and Ozone: Effect on Bioactive Compounds in Blackberry (Rubus fruticosus) cv. Tupy

description: ABSTRACT The aim of this study was to evaluate and compare the efficiency of sanitization with sodium hypochlorite and ozone blackberry and evaluate the influence of the sanitization process on bioactive compounds in different concentrations and immersion times. Microbiological analyzes and bioactive compounds determinations were carried out. The chlorine compounds used in the sanitization induced losses in the bioactive compounds of the blackberry, being effective in sanitizing against fungi when used at a concentration of 200 ppm for 15 minutes immersion. However, the fruit sanitized with ozone showed contamination levels inside of the microbiological standards established by brazilian legislation and did not change significantly in the content of bioactive compounds. The lowest concentration of ozone present in this study showed greater effectiveness in sanitizing fruits compared the chlorine solutions.
DOI: 10.6084/m9.figshare.14276924.v1
title: Methodology to estimate the number of workable days with farm machinery

description: In the current agricultural model, it is essential for farmers to know the real time available for the execution of agricultural operations throughout the crop cycle. This is the first step to plan and achieve greater efficiency in these operations, which are subject to climate changes. Meteorological variables in a certain region directly influence the number of days available to work with farm machinery. The objective of this study was to estimate the probabilities of favorable workdays for farm machinery, using meteorological information from the municipality of Santa Maria, RS, Brazil. The conditions to be considered as a favorable working day with machinery were: precipitation &lt;5 mm and soil water storage between 40 and 90% of the available water capacity. The first order Markov chain was used to estimate the conditional probabilities of favorable days to work with machines. Results indicate that the methodology used to estimate the probabilities of favorable working days for agricultural machinery was feasible, showing the most appropriate times to execution of mechanized farming operations in the field, in the municipality of Santa Maria, RS.
DOI: 10.6084/m9.figshare.14276926.v1
title: Influence of foliar fertilization with manganese on germination, vigor and storage time of RR soybean seeds

description: ABSTRACTThis study aimed to evaluate the influence of foliar fertilizer doses containing Mn of phenological stages of suggested application in RR soybeans, to recover management damages with glyphosate at postemergence application on seed vigor in post-harvest and post six months storage. The seeds originated from a field experiment conducted , which included two applications of glyphosate, concomitant with foliar fertilizer in growth stages V4 and V6, with 0.00, 113.50 and 227.00 mg ha-1doses of Mn2+. Germination, GSI (Germination Speed Index), electrical conductivity tests and the first count of seeds were conducted. The application of Mn did not affect the physiological quality of RR soy in postharvest. However, in post-storage, higher doses of Mn had a negative effect on tests of abnormal seedlings, GSI and electrical conductivity. The applications of Mn, regardless of the developmental stage, did not interfere in the germination and first count tests, with and without storage. The electrical conductivity test showed a higher correlation with the seed germination test in the post-harvest treatment.
DOI: 10.6084/m9.figshare.14276929.v1
title: Environmental performance of aquaculture in Rondônia state, Brazil

description: The objective of this study was to analyze the environmental performance of aquaculture in the city of Colorado do Oeste, Rondônia State, Brazil. Fifteen fish farmers were interviewed. For data collection, structured interviews were carried out, using a questionnaire based on information supplied by the United Nations Food and Agriculture Organization (FAO). The questionnaire considered 12 items, organized into three main topics: a) social and legal standards b) environmental standards c) standards of food safety and hygiene. The questionnaire considered 12 items, organized into three main topics: a) social and legal standards b) environmental standards c) standards of food safety and hygiene. Aquaculture in the city of Colorado do Oeste, Rondônia presents two fish production systems: extensive and semi-intensive. In the semi-intensive system, stocking rate was one fish per m3, on average; tambaqui (Colossoma macropomum), tilapias (Oreochromis spp.), pirarucu (Arapaima gigas) and pintado (Pseudoplatystoma spp.) were the species farmed at the largest number. The rate of water renewal was due to the greater availability of natural food in this system. Water renewal was constant in the ponds (1,500 liters per minute). In the semi-intensive system using dug ponds, alevins were stocked and fed during the entire rearing time with natural and exogenous food. The extensive system relied on the natural production of the pond, with stocking density limited by the production of natural food. The little renewal of water made the cultivation tank itself acted as a decantation lake, with the occurrence of oxidation and sedimentation of residual organic matter, consisting of feces, debris and organic fertilizer. Production of reduced effluent volume took place in the extensive system, compared to the cultivation area. In addition, there was high water turbidity, caused by high concentration of planktonic organisms, and low concentrations of dissolved oxygen in the water. Data showed that nine estates of the interviewed fish farmers had critical environmental performance (less than 30.0%). Six estates of fish farmers had bad environmental performance (between 30.0 and 50.0%) (Coefficient of sustentainability = green square x 100 ÷ Total Questions less the yellow squares)
DOI: 10.6084/m9.figshare.14276931.v1
title: Effect of acidification on the physicochemical and functional properties of mango seeds starch (Mangifera indica L.), Tommy Atkins Variety

description: In the industrial processing of mango, the by-products, stone and shell are usually discarded without its proper use. The objective of this study was to investigate the physicochemical and functional properties of native and acidified starch separated from mango kernels, Tommy Atkins variety, searching for a new source of starch, ways to improve it and contribute to the use of residue food industry. The kernels were removed manually and the extraction of starch proceeded. The native starch was acidified with hydrochloric acid. It was detected the chemical composition of native starch. - We also determined the functional and paste properties of native and acidified starch. For the chemical composition the native starch presented 71.56% starch, 7.30% lipids and 5.6% proteins. The native and acidified starches showed low resistance to high temperature, with maximum swelling at 75oC, their values being 9.395 and 6.861 g/g, respectively. The solubility was found to be increasing as the temperature was elevated and its maximum value 48.03% for acidified starch. The native starch exhibited greater capacity to absorb water, oil and paste clarity. This starch also showed a higher peak viscosity, hold, breakdown, final viscosity, setback and paste temperature than acidified starch. The native starch can be indicated to form dehydrated soups and meat products while the acidified starch can be used in frozen and chilled food and candy industry.
DOI: 10.6084/m9.figshare.14276921.v1
title: Analytical determination of the performance of free draining, sloping furrow irrigation

description: An analytical solution was developed to evaluate free-draining sloping furrows based on Walker and Skogerboe (1987) volume balance approach. Its application allows the mathematical calculation of a system performance, instead of constructing graphs that define the evaluation parameters. The mathematical solution is based on fitting equations to potential models, calculating the areas under the curves defined by the fitting and on curve intersection, , from which the system performance is obtained. To validate the methodology, we conducted a field experiment at the Experimental Farm of the Federal University of Ceará, in the municipality of Pentecoste, belonging to the Center of Agricultural Sciences, where field data were analyzed by the two methods. The results showed that the analytical methodology can be used to evaluate the free draining sloping furrows irrigation.
DOI: 10.6084/m9.figshare.14276940
title: Spread of ‘Koroneiki’ Olive by the cutting method at different times, AIB concentrations and the presence of leaves

description: ABSTRACT This study aimed to evaluate the influence of timing, IBA concentration and presence of leaves on cutting propagation of olive 'Koroneiki'. Cuttings with 10 cm length were collected from the middle portion of branches of three years old plants at the Federal Technological University of Paraná, between June 2013 and March 2014. The experiment was carried out in a completely randomized design with four replications of 10 cuttings each, in a triple factorial [timing (June, September, December, March); number of pairs of leaves (0, 1 and 2) and IBA concentrations (0, 1.000, 2.000 and 3.000 mg L-1)]. IBA treatment consisted in fast immersion of cutting base for 5 seconds, then planted in tubes containing commercial substrate. Thereafter, the cuttings were manteined in intermittent mist condition for 60 days. At the end of this period, the survival (%), callus formation (%), number of shoots per cutting and rooting (%) were measured. For cuttings more survival, roots and callus formation is necessary to maintain at least one pair of leaves on the cuttings. In December, it is not recommended to propagate by cuttings independent of the auxiliary techniques. Without the use of IBA, it is recommended to perform the cuttings in June and September since kept a pair of leaves. The cutting when carried out in March must be kept at least a couple of sheets in combination with doses of 2.000 or 3.000 mg L-1 IBA.
DOI: 10.6084/m9.figshare.14276935
title: Socioeconomic benefits from the new technologies in the açaí cultivation in Pará State

description: ABSTRACT The objective of this study was to calculate the socio-economic benefits generated by the adoption of new technologies in the rational cultivation of açaí in the state of Pará, in the period 2001-2009. We used the results of açaí supply and demand equations estimated by Nogueira (2011) in order to get the price elasticities of supply and demand so as to assess the social and economic returns of adoption of new technologies on the açaí market economy in the state. Results showed that, from 2001 through the adoption of innovative technologies in the rational cultivation of fruit there was a substantial increase in the socioeconomic benefit to Pará population. That benefit reaching a level of R$25.763,79 mil, which represented an increase of 48.78% compared to the benefit obtained before the adoption of the technology, R$13.195,50 mil. Regarding the distribution of benefits, consumers have been the main beneficiaries with 71.86% of the total benefits.
DOI: 10.6084/m9.figshare.14276942
title: Effects of zinc and selenium supplementation on broilers subjected to cyclic heat stress

description: Broilers raised under heat stress can have reduced antioxidant standard, however supplementation with zinc and selenium can mitigate this effect.In this study, we evaluated the effects of zinc and selenium supplementation, in the organic and inorganic forms, on performance, lipid peroxidation and carcass yield of broilers subjected to cyclic heat stress (HS). A total of 2400 one-day-old male chicks were raised in thermal comfort until the 14th day, then 1200 chicks were subjected to HS. The experiment was arranged in a completely randomized design in a 2 x 5 factorial with 2 environmental conditions [comfort (C) and HS] and 5 supplementation levels [S1) control diet; S2) S1 + 40 mg / kg of inorganic Zn; S3) S1 + 40 mg/kg of organic Zn; S4) S1 + 40 mg / kg of inorganic Zn and 0.2 mg / kg organic selenium and S5) S1 + 40 mg / kg of organic Zn and 0.2 mg / kg selenium organic], totalling 10 treatments with 8 replicates of 30 birds each. The variables evaluated were blood levels of thiobarbituric acid reactive substances (TBARS), cloacal temperature (CT), weight gain, feed intake, feed conversion, live weight and carcass yield and cuts. On the 35th and 42nddays, HS broilers showed increased cloacal temperature. Weight gain, feed conversion and eviscerated carcass were negatively influenced by heat. Environment and supplement levels did not affect breast meat yield with and without bone, drumstick, thigh, and wing. In the environmental and nutritional conditions of this study, there was no need for supplemental addition of organic and inorganic zinc and organic selenium.
DOI: 10.6084/m9.figshare.14276933.v1
title: Sanitization by Chlorine compounds and Ozone: Effect on Bioactive Compounds in Blackberry (Rubus fruticosus) cv. Tupy

description: ABSTRACT The aim of this study was to evaluate and compare the efficiency of sanitization with sodium hypochlorite and ozone blackberry and evaluate the influence of the sanitization process on bioactive compounds in different concentrations and immersion times. Microbiological analyzes and bioactive compounds determinations were carried out. The chlorine compounds used in the sanitization induced losses in the bioactive compounds of the blackberry, being effective in sanitizing against fungi when used at a concentration of 200 ppm for 15 minutes immersion. However, the fruit sanitized with ozone showed contamination levels inside of the microbiological standards established by brazilian legislation and did not change significantly in the content of bioactive compounds. The lowest concentration of ozone present in this study showed greater effectiveness in sanitizing fruits compared the chlorine solutions.
DOI: 10.6084/m9.figshare.14276940.v1
title: Spread of ‘Koroneiki’ Olive by the cutting method at different times, AIB concentrations and the presence of leaves

description: ABSTRACT This study aimed to evaluate the influence of timing, IBA concentration and presence of leaves on cutting propagation of olive 'Koroneiki'. Cuttings with 10 cm length were collected from the middle portion of branches of three years old plants at the Federal Technological University of Paraná, between June 2013 and March 2014. The experiment was carried out in a completely randomized design with four replications of 10 cuttings each, in a triple factorial [timing (June, September, December, March); number of pairs of leaves (0, 1 and 2) and IBA concentrations (0, 1.000, 2.000 and 3.000 mg L-1)]. IBA treatment consisted in fast immersion of cutting base for 5 seconds, then planted in tubes containing commercial substrate. Thereafter, the cuttings were manteined in intermittent mist condition for 60 days. At the end of this period, the survival (%), callus formation (%), number of shoots per cutting and rooting (%) were measured. For cuttings more survival, roots and callus formation is necessary to maintain at least one pair of leaves on the cuttings. In December, it is not recommended to propagate by cuttings independent of the auxiliary techniques. Without the use of IBA, it is recommended to perform the cuttings in June and September since kept a pair of leaves. The cutting when carried out in March must be kept at least a couple of sheets in combination with doses of 2.000 or 3.000 mg L-1 IBA.
DOI: 10.6084/m9.figshare.14276945
title: Use of kriging techniques to estimate Conilon coffee productivity

description: ABSTRACT Knowing the spatial variability of a coffee-crop helps to understand some phenomena which can be correlated with its productivity. This study aimed estimating the productivity (kg ha-1) of conilon coffee-tree in three consecutive harvests using the cokriging method, considering the number of plagiotropic branches per plant as a covariable. In the center of a coffee-crop we settled a sampling grid with 109 georeferenced points, each point consisted of five plants. Subsequently the vegetative branches were counted for three consecutive growing seasons before performing manual harvesting of coffee beans. The harvested coffee was separated into cherry, yellowish and green and dried to a standard moisture of 12%. The dry cherry productivity (kg ha-1) was then evaluated. The three harvests evaluated showed linear correlation and spatial dependence among productivity and number of vegetative branches. Estimation of productivity by the number of vegetative branches showed similarities in cokriging, indicating that vegetative branches is an efficient covariable to estimate conilon coffee productivity.
DOI: 10.6084/m9.figshare.14276941
title: Quality of Brazil nuts stored in forced aeration silos

description: ABSTRACT The traditional system of collection and storage of Brazil nut compromises seriously the quality of these almonds as it contributes to the high incidence of contaminants, like fungi of the genus Aspergillus, which can produce aflatoxins. In this study, the objective was to evaluate the influence of the storage period in studied conditions, on the physicochemical characteristics and on the microbiological contamination of Brazil nuts. The experimental was designed as completely randomized, considering as treatments the storage period (0 - control, 30, 60, 90, 120 and 150 days) with four replicates of 3 kg of Brazil nuts each. The samples were submitted to physicochemical and microbiological analysis. It was observed that almonds submitted to the storage had their moisture content reduced by 78.2% at 150 days of storage, however, this reduction was not fast enough to avoid surface contamination by filamentous and potentially aflatoxins producing fungi. The critical period of contamination occurred on the first 30 days of storage when there was an increase of the studied fungi, as well as B1 and total aflatoxin. The studied storage conditions were four times more effective in reducing the product moisture content than the traditional methods, however, pre-drying is necessary to avoid contamination of the product.