cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.19929041
title: Initial growthing of corn under nutrient omission in nutritive solution

description: ABSTRACT The emergence of new corn hybrids may affect tolerance to nutritional deficiency culture. This study aimed to characterize the visual symptoms of macronutrient deficiency and its relation to the development, content and nutrient accumulation in maize. The experiment was arranged in entirely randomized design, with seven treatments and three replications. The plants were cultivated in nutritive complete solution of Hoagland & Arnon (1950), and the omission of N, P, K, Ca, Mg and S. The onset of symptoms of deficiency of N, P, K, Ca and Mg occurred at 5, 16, 16, 16 and 22, days after the transplant, respectively. The corn had lower dry matter production in the omission of N, P, K, Ca and Mg in relation to the complete treatment. Symptoms of deficiency of N, P, K, Ca and Mg were observed in the shoots of corn with levels equal to 7.8; 1.2; 15.7; 1.8 to 0.7 g kg-1 , respectively. Complete treatment in the N, P, K, Ca and Mg in the shoots were 30.6; 5.9; 63.7; 6.0 and 4.5 g kg-1, in that order, good nutritional status. The dry matter production will decrease in the omission of nutrients in the aerial part and in the roots, and the treatments had lower dry matter production were the omission of N and K. The absence of a nutrient, and reduce its content in the shoot, cause imbalance between the other nutrients, thus providing characteristic symptoms of deficiency of each nutrient.
DOI: 10.6084/m9.figshare.19929041.v1
title: Initial growthing of corn under nutrient omission in nutritive solution

description: ABSTRACT The emergence of new corn hybrids may affect tolerance to nutritional deficiency culture. This study aimed to characterize the visual symptoms of macronutrient deficiency and its relation to the development, content and nutrient accumulation in maize. The experiment was arranged in entirely randomized design, with seven treatments and three replications. The plants were cultivated in nutritive complete solution of Hoagland & Arnon (1950), and the omission of N, P, K, Ca, Mg and S. The onset of symptoms of deficiency of N, P, K, Ca and Mg occurred at 5, 16, 16, 16 and 22, days after the transplant, respectively. The corn had lower dry matter production in the omission of N, P, K, Ca and Mg in relation to the complete treatment. Symptoms of deficiency of N, P, K, Ca and Mg were observed in the shoots of corn with levels equal to 7.8; 1.2; 15.7; 1.8 to 0.7 g kg-1 , respectively. Complete treatment in the N, P, K, Ca and Mg in the shoots were 30.6; 5.9; 63.7; 6.0 and 4.5 g kg-1, in that order, good nutritional status. The dry matter production will decrease in the omission of nutrients in the aerial part and in the roots, and the treatments had lower dry matter production were the omission of N and K. The absence of a nutrient, and reduce its content in the shoot, cause imbalance between the other nutrients, thus providing characteristic symptoms of deficiency of each nutrient.
DOI: 10.6084/m9.figshare.19929039
title: Production of gherkin seedlings in coconut fiber fertirrigated with different nutrient solutions

description: ABSTRACT Seedling quality is a key factor to achieve success in vegetable production. The present work aimed to evaluate the production of gherkin seedlings in substrate of coconut fiber fertirrigated with different concentrations of nutrients. The experimental design was completely randomized in a 3 × 5 factorial with four replications. The treatments consisted of combinations of three cultivars of gherkin (Do Norte, Liso de Calcutá, e Liso Gibão) with five concentrations of nutrients in the solution (0, 25, 50, 75, and 100%). The nutrient solution, considered standard, matches the recommended solution for melon in hydroponic systems. We evaluated the variables: chlorophyll index, shoot length, number of leaves, stem diameter, main root length, dry weight of leaves, roots, and stem, mass of total dry matter, leaf area, specific leaf area, and leaf area ratio. All variables were affected by the ionic concentration in nutrient solutions. The use of coconut fiber in the production of gherkin seedlings is more efficient with nutrient solutions in concentrations ranging from 75 to 100% of the recommended solution for melon cultivation.
DOI: 10.6084/m9.figshare.19929039.v1
title: Production of gherkin seedlings in coconut fiber fertirrigated with different nutrient solutions

description: ABSTRACT Seedling quality is a key factor to achieve success in vegetable production. The present work aimed to evaluate the production of gherkin seedlings in substrate of coconut fiber fertirrigated with different concentrations of nutrients. The experimental design was completely randomized in a 3 × 5 factorial with four replications. The treatments consisted of combinations of three cultivars of gherkin (Do Norte, Liso de Calcutá, e Liso Gibão) with five concentrations of nutrients in the solution (0, 25, 50, 75, and 100%). The nutrient solution, considered standard, matches the recommended solution for melon in hydroponic systems. We evaluated the variables: chlorophyll index, shoot length, number of leaves, stem diameter, main root length, dry weight of leaves, roots, and stem, mass of total dry matter, leaf area, specific leaf area, and leaf area ratio. All variables were affected by the ionic concentration in nutrient solutions. The use of coconut fiber in the production of gherkin seedlings is more efficient with nutrient solutions in concentrations ranging from 75 to 100% of the recommended solution for melon cultivation.
DOI: 10.6084/m9.figshare.19929048
title: Acquisition and characterization of yogurts produced with sheep and cow milk

description: ABSTRACT The objective of this work was to obtain and characterize (physicochemical, rheological and microbiologically) yogurt made from sheep's milk (whole and semi-skimmed) and cow's milk (whole and semi-skimmed). Were carried out physical and chemical analysis (pH, acidity, protein, lactose, fat, ash and minerals) and microbiological (Salmonella spp., Staphylococcus coagulase positive and coliforms at 35 °C), in the milk and yogurts and syneresis in yoghurts held on 1st, 15th and 30th days of storage. From the physico-chemical analysis, it was found that the fully and semi-skimmed sheep's milk is nutritionally richer when compared to whole cow's milk and semi-skimmed milk and yoghurts with both full sheep's milk as semi-skimmed presented the larger values of fat, protein, pH, lactose, minerals and higher syneresis when compared to the yoghurt with whole cow's milk, semi-skimmed milk.
DOI: 10.6084/m9.figshare.19929048.v1
title: Acquisition and characterization of yogurts produced with sheep and cow milk

description: ABSTRACT The objective of this work was to obtain and characterize (physicochemical, rheological and microbiologically) yogurt made from sheep's milk (whole and semi-skimmed) and cow's milk (whole and semi-skimmed). Were carried out physical and chemical analysis (pH, acidity, protein, lactose, fat, ash and minerals) and microbiological (Salmonella spp., Staphylococcus coagulase positive and coliforms at 35 °C), in the milk and yogurts and syneresis in yoghurts held on 1st, 15th and 30th days of storage. From the physico-chemical analysis, it was found that the fully and semi-skimmed sheep's milk is nutritionally richer when compared to whole cow's milk and semi-skimmed milk and yoghurts with both full sheep's milk as semi-skimmed presented the larger values of fat, protein, pH, lactose, minerals and higher syneresis when compared to the yoghurt with whole cow's milk, semi-skimmed milk.
DOI: 10.6084/m9.figshare.19929050.v1
title: Effect of irrigation and nitrogen fertilization on the agronomic traits and yield of irrigated rice

description: ABSTRACT Water and nitrogen management is essential to achieve high yield potential in irrigated agricultural systems. This study aimed to evaluate the influence of flood timing and nitrogen management on the agronomic performance of irrigated rice in tropical lowland. Two experiments were conducted in a Dystrophic Haplic Gleysol during the 2007/08 and 2008/09 crop years. The experiments were carried out using the cultivars BRS Jaçanã and Epagri 109. Flood timing combined with timing of topdressing 90 kg ha -1 N was evaluated at 15, 30, 45 and 60 days after emergence. The experiment was arranged in a split plot completely randomized design, flood timing in the plots and N application in the subplots, with six replications. Late flooding as well as late nitrogen application resulted in reduction of phytobiomass, grain quality and yield of irrigated rice. Flooding is recommended at the beginning of tillering for cultivar that shows higher initial growth, while for slower growth cultivar, ponding water can be established until mid-tillering. Early flooding increases sheath blight severity in rice stems. For improved quality and productive potential of irrigated rice, early flooding period and efficient sheath blight control is necessary.
DOI: 10.6084/m9.figshare.19929050
title: Effect of irrigation and nitrogen fertilization on the agronomic traits and yield of irrigated rice

description: ABSTRACT Water and nitrogen management is essential to achieve high yield potential in irrigated agricultural systems. This study aimed to evaluate the influence of flood timing and nitrogen management on the agronomic performance of irrigated rice in tropical lowland. Two experiments were conducted in a Dystrophic Haplic Gleysol during the 2007/08 and 2008/09 crop years. The experiments were carried out using the cultivars BRS Jaçanã and Epagri 109. Flood timing combined with timing of topdressing 90 kg ha -1 N was evaluated at 15, 30, 45 and 60 days after emergence. The experiment was arranged in a split plot completely randomized design, flood timing in the plots and N application in the subplots, with six replications. Late flooding as well as late nitrogen application resulted in reduction of phytobiomass, grain quality and yield of irrigated rice. Flooding is recommended at the beginning of tillering for cultivar that shows higher initial growth, while for slower growth cultivar, ponding water can be established until mid-tillering. Early flooding increases sheath blight severity in rice stems. For improved quality and productive potential of irrigated rice, early flooding period and efficient sheath blight control is necessary.
DOI: 10.6084/m9.figshare.19929053
title: Spray deposition on soybean crop as a function of different service pressures and spray nozzles

description: ABSTRACT The service pressure influences the characteristics of the hydraulic spraying of pesticides and can change the spray penetration in the soybean canopy. This study aimed to evaluate the effect of pressure on the spray deposition in soybean crop, promoted by different models of spray nozzles. The experiment was conducted in a randomized block design, in a factorial model 2 x 4 + 1, with two nozzles (hollow cone - ATR and hollow cone with air induction - TVI) and four service pressures (689, 1034, 1379 and 1724 kPa), with an additional treatment (flat fan nozzle at 448 kPa-API). The spray deposition on soybean (top and bottom parts of Vila Rica Cultivar R6 Stage) was analyzed using the fluorescent tracer Rhodamine B detected by fluorimetry, take into account the same spray volume (200 L ha-1). It was also evaluated the droplet spectrum, using the analysis of water sensitive papers. It was concluded that the ATR nozzle, with smaller and more uniform droplets, resulted in a higher deposition of the tracer than TVI nozzle. The pressure increase reduced deposition on the lower leaves. The deposit obtained with the flat fan nozzle (API) did not differ from those obtained by other nozzles.
DOI: 10.6084/m9.figshare.19929053.v1
title: Spray deposition on soybean crop as a function of different service pressures and spray nozzles

description: ABSTRACT The service pressure influences the characteristics of the hydraulic spraying of pesticides and can change the spray penetration in the soybean canopy. This study aimed to evaluate the effect of pressure on the spray deposition in soybean crop, promoted by different models of spray nozzles. The experiment was conducted in a randomized block design, in a factorial model 2 x 4 + 1, with two nozzles (hollow cone - ATR and hollow cone with air induction - TVI) and four service pressures (689, 1034, 1379 and 1724 kPa), with an additional treatment (flat fan nozzle at 448 kPa-API). The spray deposition on soybean (top and bottom parts of Vila Rica Cultivar R6 Stage) was analyzed using the fluorescent tracer Rhodamine B detected by fluorimetry, take into account the same spray volume (200 L ha-1). It was also evaluated the droplet spectrum, using the analysis of water sensitive papers. It was concluded that the ATR nozzle, with smaller and more uniform droplets, resulted in a higher deposition of the tracer than TVI nozzle. The pressure increase reduced deposition on the lower leaves. The deposit obtained with the flat fan nozzle (API) did not differ from those obtained by other nozzles.
DOI: 10.6084/m9.figshare.19929054.v1
title: Analysis of evapotranspiration and biomass in pastures with degradation indicatives in the Upper Tocantins River Basin, in Brazilian Savanna

description: ABSTRACT The objective of this study was to apply the Simple Algorithm For Evapotranspiration Retrieving (SAFER) with MODIS images together with meteorological data to analyze evapotranspiration (ET) and biomass production (BIO) according to indicative classes of pasture degradation in Upper Tocantins River Basin. Indicative classes of degraded pastures were obtained from the NDVI time-series (2002-2012). To estimate ET and BIO in each class, MODIS images and data from meteorological stations of the year 2012 were used. The results show that compared to not-degraded pastures, ET and BIO were different in pastures with moderate to strong degradation, mainly during water stress period. Therefore, changes in energy balance partition may occur according to the degradation levels, considering that those indicatives of degradation processes were identified in 24% of the planted pasture areas. In this context, ET and BIO estimates using remote sensing techniques can be a reliable indicator of forage availability, and large-scale aspects related to the degradation of pastures. It is expected that this knowledge may contribute to initiatives of public policies aimed at controlling the loss of production potential of pasture areas in the Upper Tocantins River Basin in the state of Goiás, Brazil.
DOI: 10.6084/m9.figshare.19929054
title: Analysis of evapotranspiration and biomass in pastures with degradation indicatives in the Upper Tocantins River Basin, in Brazilian Savanna

description: ABSTRACT The objective of this study was to apply the Simple Algorithm For Evapotranspiration Retrieving (SAFER) with MODIS images together with meteorological data to analyze evapotranspiration (ET) and biomass production (BIO) according to indicative classes of pasture degradation in Upper Tocantins River Basin. Indicative classes of degraded pastures were obtained from the NDVI time-series (2002-2012). To estimate ET and BIO in each class, MODIS images and data from meteorological stations of the year 2012 were used. The results show that compared to not-degraded pastures, ET and BIO were different in pastures with moderate to strong degradation, mainly during water stress period. Therefore, changes in energy balance partition may occur according to the degradation levels, considering that those indicatives of degradation processes were identified in 24% of the planted pasture areas. In this context, ET and BIO estimates using remote sensing techniques can be a reliable indicator of forage availability, and large-scale aspects related to the degradation of pastures. It is expected that this knowledge may contribute to initiatives of public policies aimed at controlling the loss of production potential of pasture areas in the Upper Tocantins River Basin in the state of Goiás, Brazil.
DOI: 10.6084/m9.figshare.19929056
title: Drying kinetics and microbiological quality of green onions

description: ABSTRACT Green onion (Allium fistulosum L.) is widely consumed and traded in Brazil as condiment. Because of the high yields in the region of Volta Redonda - RJ and the alternative of drying as a method for preserving the excess production, the objective of this study was to evaluate the drying process of green onions, considering the microbiological quality, and to develop the mathematical modeling of this process. Mathematical models to describe the drying of agricultural products were used to predict the phenomenon. The modified Page equation gave the best fit to the data. Microbiological quality was evaluated using the analysis of aerobic mesophilic bacteria, molds and yeasts. Dehydration at 60 ºC was the most indicated for green onions, with assured microbiological quality.
DOI: 10.6084/m9.figshare.19929056.v1
title: Drying kinetics and microbiological quality of green onions

description: ABSTRACT Green onion (Allium fistulosum L.) is widely consumed and traded in Brazil as condiment. Because of the high yields in the region of Volta Redonda - RJ and the alternative of drying as a method for preserving the excess production, the objective of this study was to evaluate the drying process of green onions, considering the microbiological quality, and to develop the mathematical modeling of this process. Mathematical models to describe the drying of agricultural products were used to predict the phenomenon. The modified Page equation gave the best fit to the data. Microbiological quality was evaluated using the analysis of aerobic mesophilic bacteria, molds and yeasts. Dehydration at 60 ºC was the most indicated for green onions, with assured microbiological quality.
DOI: 10.6084/m9.figshare.19929057
title: Transition and conditional probability for monthly and extreme daily rainfall in Santa Catarina

description: ABSTRACT This study aimed to obtain matrices of transition probability and the conditional monthly rainfall for the State of Santa Catarina, as an aid to climate forecast. Were used daily rainfall data for the period 1991-2013 from nine stations located in different climatic regions of the State of Santa Catarina. For matrices of probabilities, monthly rainfalls were divided in the following categories: below (-1), inside (0) and above (1) climatology. The framework of the values of monthly rainfall in these categories was based on quantile Q0,35 and Q0,65. When the rainfall is below the climatology (category -1) there is a greater probability of rainfall in the next month pass to category 1 in six regions, represented by the cities of Vargem Bonita (40%), Saudades (47%), Curitibanos (36%), Lages (40%), Trombudo Central (40%) and Araranguá (45%). A similar situation occurs when in a given month the observed rainfall is above the climatology, so there's more likely to remain in condition 1. The probability values show that the matrices of transition probabilities and conditional can be used as an aid in monthly forecasts and daily extreme events of rainfall to Santa Catarina.
DOI: 10.6084/m9.figshare.19929057.v1
title: Transition and conditional probability for monthly and extreme daily rainfall in Santa Catarina

description: ABSTRACT This study aimed to obtain matrices of transition probability and the conditional monthly rainfall for the State of Santa Catarina, as an aid to climate forecast. Were used daily rainfall data for the period 1991-2013 from nine stations located in different climatic regions of the State of Santa Catarina. For matrices of probabilities, monthly rainfalls were divided in the following categories: below (-1), inside (0) and above (1) climatology. The framework of the values of monthly rainfall in these categories was based on quantile Q0,35 and Q0,65. When the rainfall is below the climatology (category -1) there is a greater probability of rainfall in the next month pass to category 1 in six regions, represented by the cities of Vargem Bonita (40%), Saudades (47%), Curitibanos (36%), Lages (40%), Trombudo Central (40%) and Araranguá (45%). A similar situation occurs when in a given month the observed rainfall is above the climatology, so there's more likely to remain in condition 1. The probability values show that the matrices of transition probabilities and conditional can be used as an aid in monthly forecasts and daily extreme events of rainfall to Santa Catarina.
DOI: 10.6084/m9.figshare.19929060
title: Influence of the main stem pruning and fruit thinning on quality of melon

description: ABSTRACT Among many management practices used in melon crops, those that change source: sink relationship, such as pruning and fruit thinning, directly influence production, affect fruit size and its composition, including sugar and vitamin contents. The objective of this study was to evaluate the influence of pruning of the main stem and time of fruit thinning in melon postharvest quality. Thus, two experiments were set up in Mossoró, state of Rio Grande do Norte, each with a melon hybrid (Amaregal and Banzai). Each experiment was conducted in a randomized block, in a (2 x 4) + 1 factorial design, 2 pruning management (with and without pruning), 4 levels of fruit thinning (3, 6, 9 and 12 DARB - days after removal agro textile blanket) and a control (without pruning and thinning), and four replications. Fruits were harvested at commercial maturity and transported to the Laboratory of Food Technology of UFERSA, where they were evaluated for the following characteristics: weight, diameter, length, flesh thickness, flesh firmness, soluble solids, pH, and titratable acidity, soluble solids: titratable acidity ratio and vitamin C. No interaction between factors in any of the experiments was found. Titratable acidity (0.077%) and vitamin C content (3.4 mg/100 g) in Amaregal melon and soluble solids (10.2%) in Banzai melon were lower in the treatments with stem pruning. In Amaregal melon, fruits showed longer length (134 mm) and greater flesh firmness (40 N) when thinning was carried out on 6 DARB, and as thinning was delayed, it found a decrease in the values of soluble solids, SS: TA ratio and pH. In Banzai melon, fruits showed greater flesh thickness (33.5 mm) and SS: TA (247.5) ratio when thinning was carried out on 6 DARB. However, delay in thinning promoted an increase in pH and vitamin C content of the fruits. Pruning of the main stem and thinning season had effect on the quality of Amaregal and Banzai melons in different ways.