cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14326899
title: Effect of legume hay on the performance of suckling calves

description: ABSTRACTThe aim of this study was to evaluate the performance of suckling calves fed diets with and without legume hay. The experimental period was of 60 days, with solid food being offered ad libitum and available from the 10 th day of the life of the animal, and milk in natura restricted to 4 litres per day, divided into two equal meals. The following diets were evaluated: concentrated feed, concentrated feed and leucaena hay (Leucaena leucocephala Lam. De Wit) and concentrated feed with alfalfa hay (Medicago sativa L.). Fifteen Girolando animals were used, distributed over three treatments in an unbalanced random block design. The parameters under evaluation were: initial body weight (at birth - IBW), final body weight (FBW), average daily gain (ADG), wither height (HW), croup height (HC), thoracic perimeter (PT), dry matter intake (DMI) and feed conversion (FC). No difference was seen in animal performance in relation to the treatments, with averages of 32.9 (±2.9) kg, 67.7 (±1.2) kg, 0.58 (±0.02) kg, 13.1 (±0.5) cm, 13.7 (±0.3) cm, 20.6 (±0.7) cm, 0.46 (±0.1) and 0.79 kg (±0.1) for the parameters IBW, FBW, ADG, HW, HC, PT, DMI and FC respectively. The nutritional requirements of suckling calves are met by supplying milk and concentrated feed; there being no need to include legume hay in the diet.
DOI: 10.6084/m9.figshare.14326902
title: Effects of ground cover from branches of arboreal species on weed growth and maize yield

description: ABSTRACTCultivating maize under systems of alley cropping results in improvements to the soil, a reduction in weeds and an increase in yield. Studies using ground cover from tree shoots produce similar results. The aim of this study was to evaluate the effects on weed growth and maize yield of ground cover made up of 30 t ha-1 (fresh matter) of branches from the tree species: neem (Azadirachta indica A. Juss), gliricidia [Gliricidia sepium(Jacq.) Kunth ex Walp.], leucaena [Leucaena leucocephala (Lam.) de Wit.] and sabiá (Mimosa caesalpiniifolia Benth.). Two treatment groups (cultivars and weed control) were evaluated. The cultivars AG 1041 and AL Bandeirantes were subjected to the following treatments: no hoeing, double hoeing, and ground a cover of branches of the above species when sowing the maize. A randomised block design was used with split lots (cultivars in the lots) and ten replications. The cultivars did not differ for green ear or grain yield. Double hoeing was more effective than ground cover at reducing the growth of weeds. However, both weeding and ground cover resulted in similar yields for green ears and grain, which were greater than those obtained with the unweeded maize.
DOI: 10.6084/m9.figshare.14326902.v1
title: Effects of ground cover from branches of arboreal species on weed growth and maize yield

description: ABSTRACTCultivating maize under systems of alley cropping results in improvements to the soil, a reduction in weeds and an increase in yield. Studies using ground cover from tree shoots produce similar results. The aim of this study was to evaluate the effects on weed growth and maize yield of ground cover made up of 30 t ha-1 (fresh matter) of branches from the tree species: neem (Azadirachta indica A. Juss), gliricidia [Gliricidia sepium(Jacq.) Kunth ex Walp.], leucaena [Leucaena leucocephala (Lam.) de Wit.] and sabiá (Mimosa caesalpiniifolia Benth.). Two treatment groups (cultivars and weed control) were evaluated. The cultivars AG 1041 and AL Bandeirantes were subjected to the following treatments: no hoeing, double hoeing, and ground a cover of branches of the above species when sowing the maize. A randomised block design was used with split lots (cultivars in the lots) and ten replications. The cultivars did not differ for green ear or grain yield. Double hoeing was more effective than ground cover at reducing the growth of weeds. However, both weeding and ground cover resulted in similar yields for green ears and grain, which were greater than those obtained with the unweeded maize.
DOI: 10.6084/m9.figshare.14326903.v1
title: Predicting the production of 'Vitória' pineapple from phytotechnical and nutritional characteristics

description: ABSTRACTObtaining an adequate correlation between such phytotechnical characteristics as the weight of the D leaf or the stem diameter and production in the pineapple can accurately predict the appropriate period for flower induction, and result in maximum productivity. Such information is still considered as scarce for the Victória cultivar. The aim of this study therefore was to correlate and relate phytotechnical and nutritional characteristics to production, in irrigated Victória pineapple in the north of the state of Minas Gerais, Brazil. To do this, 75 plants were randomly collected during the period of flower induction from a crop under central-pivot irrigation. After collection, the plants were separated into their various parts: D leaves, total leaves, stem, fruit and roots, in order to estimate the weight of fresh and dry matter. In addition, the stem diameter, the length of the D leaf, the macro and micronutrient content of the D leaf, and the harvest index were all estimated. Using variance analysis, a significant correlation was seen between the majority of characteristics with fruit production, especially the high positive correlation between the fresh and dry weight of the D leaf (fresh r = 0.82, dry r = 0.84), diameter of the stem (r = 0.82) and diameter of the fruit (r = 0.93) to fruit weight. In order to obtain a fruit weight greater than or equal to 1.2 kg plant-1, flower induction in the 'Vitória' pineapple was suggested for those plants having a minimum weight for D leaf fresh matter of 70 g, or with a minimum stem diameter of 8.5 cm.
DOI: 10.6084/m9.figshare.14326903
title: Predicting the production of 'Vitória' pineapple from phytotechnical and nutritional characteristics

description: ABSTRACTObtaining an adequate correlation between such phytotechnical characteristics as the weight of the D leaf or the stem diameter and production in the pineapple can accurately predict the appropriate period for flower induction, and result in maximum productivity. Such information is still considered as scarce for the Victória cultivar. The aim of this study therefore was to correlate and relate phytotechnical and nutritional characteristics to production, in irrigated Victória pineapple in the north of the state of Minas Gerais, Brazil. To do this, 75 plants were randomly collected during the period of flower induction from a crop under central-pivot irrigation. After collection, the plants were separated into their various parts: D leaves, total leaves, stem, fruit and roots, in order to estimate the weight of fresh and dry matter. In addition, the stem diameter, the length of the D leaf, the macro and micronutrient content of the D leaf, and the harvest index were all estimated. Using variance analysis, a significant correlation was seen between the majority of characteristics with fruit production, especially the high positive correlation between the fresh and dry weight of the D leaf (fresh r = 0.82, dry r = 0.84), diameter of the stem (r = 0.82) and diameter of the fruit (r = 0.93) to fruit weight. In order to obtain a fruit weight greater than or equal to 1.2 kg plant-1, flower induction in the 'Vitória' pineapple was suggested for those plants having a minimum weight for D leaf fresh matter of 70 g, or with a minimum stem diameter of 8.5 cm.
DOI: 10.6084/m9.figshare.14326906.v1
title: Abiotic factors in the effect of herbicides on the physiological quality of rice seeds

description: ABSTRACTThe aim of this study was to evaluate the physiological quality of rice seeds with the application of herbicides in two sowing seasons, and for the artificial reduction of lighting at different stages of crop development. The field experiment, carried out in the 2012/2013 crop year, consisted of a 2x3x5 factorial, comprising the factors: sowing season (18/10 and 09/11); herbicide [control (weeding), bispyribac-sodium and penoxsulam]; and crop development phase under light reduction (control; seedling stage, vegetative phase, reproductive phase and the entire cycle). The cultivar used was IRGA 424. The following were evaluated in the laboratory: thousand-seed weight, germination, first germination count, cold test, electrical conductivity and the length and weight of seedling shoot and root dry matter. Late sowing results in the production of rice seeds of lower weight and physiological quality. The application of sodium-bispyribac on the rice that was sown later, leads to a reduction in the vigour of the produced seeds. With reductions in artificial lighting during the vegetative phase, rice seeds with greater mass and physiological quality are obtained, whereas when the lighting is a reduced for the entire crop cycle, poor quality seeds are produced.
DOI: 10.6084/m9.figshare.14326905
title: Processed whole grain and soybean byproducts in diets for broiler chickens

description: ABSTRACTThis study aimed to evaluate the performance, carcass and prime-cut yield, percentage of abdominal fat and economic viability of feed for broiler chickens, for a period of from 22 to 42 days of age, fed diets containing degummed soybean oil, extruded whole soybean and extruded semi-whole soybean. Three hundred and sixty broilers were used in a completely randomised design with four treatments (control feed; feed with added degummed soybean oil; feed with added extruded whole soybean, feed containing extruded semi-whole soybean), five replications and 18 birds per pen. From 22 to 33 days of age, birds which were fed diets containing extruded semi-whole soybean showed the lowest weight gain and productive efficiency index. From 22 to 42 days of age, those who received the control diet and the diet containing degummed soybean oil achieved better feed conversion. At 42 days of age, the chickens fed the control diet had higher absolute carcass weight and a lower percentage of abdominal fat. In diets for broilers from 22 to 42 days of age, the use of extruded whole soybean increases abdominal fat, while extruded semi-whole soybean affects feed conversion, with a lower absolute carcass weight and lower gross margin. The use of degummed soybean oil results in better feed conversion and lower bird production costs, making it viable for inclusion in diets for these animals.
DOI: 10.6084/m9.figshare.14326906
title: Abiotic factors in the effect of herbicides on the physiological quality of rice seeds

description: ABSTRACTThe aim of this study was to evaluate the physiological quality of rice seeds with the application of herbicides in two sowing seasons, and for the artificial reduction of lighting at different stages of crop development. The field experiment, carried out in the 2012/2013 crop year, consisted of a 2x3x5 factorial, comprising the factors: sowing season (18/10 and 09/11); herbicide [control (weeding), bispyribac-sodium and penoxsulam]; and crop development phase under light reduction (control; seedling stage, vegetative phase, reproductive phase and the entire cycle). The cultivar used was IRGA 424. The following were evaluated in the laboratory: thousand-seed weight, germination, first germination count, cold test, electrical conductivity and the length and weight of seedling shoot and root dry matter. Late sowing results in the production of rice seeds of lower weight and physiological quality. The application of sodium-bispyribac on the rice that was sown later, leads to a reduction in the vigour of the produced seeds. With reductions in artificial lighting during the vegetative phase, rice seeds with greater mass and physiological quality are obtained, whereas when the lighting is a reduced for the entire crop cycle, poor quality seeds are produced.
DOI: 10.6084/m9.figshare.14326905.v1
title: Processed whole grain and soybean byproducts in diets for broiler chickens

description: ABSTRACTThis study aimed to evaluate the performance, carcass and prime-cut yield, percentage of abdominal fat and economic viability of feed for broiler chickens, for a period of from 22 to 42 days of age, fed diets containing degummed soybean oil, extruded whole soybean and extruded semi-whole soybean. Three hundred and sixty broilers were used in a completely randomised design with four treatments (control feed; feed with added degummed soybean oil; feed with added extruded whole soybean, feed containing extruded semi-whole soybean), five replications and 18 birds per pen. From 22 to 33 days of age, birds which were fed diets containing extruded semi-whole soybean showed the lowest weight gain and productive efficiency index. From 22 to 42 days of age, those who received the control diet and the diet containing degummed soybean oil achieved better feed conversion. At 42 days of age, the chickens fed the control diet had higher absolute carcass weight and a lower percentage of abdominal fat. In diets for broilers from 22 to 42 days of age, the use of extruded whole soybean increases abdominal fat, while extruded semi-whole soybean affects feed conversion, with a lower absolute carcass weight and lower gross margin. The use of degummed soybean oil results in better feed conversion and lower bird production costs, making it viable for inclusion in diets for these animals.
DOI: 10.6084/m9.figshare.14326908
title: Estimate of vigour in seeds and seedlings of Bixa orellana L.

description: ABSTRACT Multiplication in such species as the achiote tree is limited, due to inadequate knowledge of the morphological and physiological characteristics of the seeds and seedlings, and the restricted methods for determining seed quality. The aim of this research was to study the suitability of the accelerated ageing test to estimate vigour in seeds of the achiote (Bixa orellana L.), relating the results of the test to the formation of seedlings and the differences in genotype of the genetic accessions. The achiote seeds, represented by four genetic accessions, and three lots, were evaluated for germination, first germination count, classification of seedling vigour, and seedling emergence (total and speed index). The accelerated ageing test evaluated a temperature of 41°C, and periods of 48, 72 and 96 hours of exposure of the seeds to a relative humidity of 100% (water) and 76% (saturated NaCl solution). The saturated solution reduces the amount of water absorbed by the achiote seeds under conditions of accelerated ageing, reducing seed deterioration, favouring uniformity of results and reducing the proliferation of fungi common in the germination of seeds of the achiote. The accelerated ageing test with water or saline solution for 72 or 96 hours is efficient in classifying the achiote seeds as to quality. The variation in the water content of the seeds should be between 23.6 and 28.9% (72 hours) and 29.7 and 32.9% (96 hours) when using water, and between 7.3 and 9.5% with the use of the NaCl solution.
DOI: 10.6084/m9.figshare.14326908.v1
title: Estimate of vigour in seeds and seedlings of Bixa orellana L.

description: ABSTRACT Multiplication in such species as the achiote tree is limited, due to inadequate knowledge of the morphological and physiological characteristics of the seeds and seedlings, and the restricted methods for determining seed quality. The aim of this research was to study the suitability of the accelerated ageing test to estimate vigour in seeds of the achiote (Bixa orellana L.), relating the results of the test to the formation of seedlings and the differences in genotype of the genetic accessions. The achiote seeds, represented by four genetic accessions, and three lots, were evaluated for germination, first germination count, classification of seedling vigour, and seedling emergence (total and speed index). The accelerated ageing test evaluated a temperature of 41°C, and periods of 48, 72 and 96 hours of exposure of the seeds to a relative humidity of 100% (water) and 76% (saturated NaCl solution). The saturated solution reduces the amount of water absorbed by the achiote seeds under conditions of accelerated ageing, reducing seed deterioration, favouring uniformity of results and reducing the proliferation of fungi common in the germination of seeds of the achiote. The accelerated ageing test with water or saline solution for 72 or 96 hours is efficient in classifying the achiote seeds as to quality. The variation in the water content of the seeds should be between 23.6 and 28.9% (72 hours) and 29.7 and 32.9% (96 hours) when using water, and between 7.3 and 9.5% with the use of the NaCl solution.
DOI: 10.6084/m9.figshare.14326909
title: Spatial distribution of citrus leprosis in the Eastern Amazon

description: ABSTRACT This study aimed to evaluate the spatial distribution of citrus leprosis in two orchards in the Eastern state of Pará/ Eastern Amazon citrus region. Two evaluations were performed at monthly intervals between December, 2011 and November, 2012 checking plants with characteristic symptoms of citrus leprosis by recording 1 for presence and 0 for absence. To analyze the disease spatial distribution in the plots, geostatistics was used for semivariogram modeling, and elaboration of kriging maps. The model that better adjusted to the disease spatial distribution was the spherical, the one with the highest coefficient of determination with variations ranging from 18 to 19 meters in area A and 9 to 30 m in area B. The Spatial Dependence Index (SDI) was moderate for all area A evaluations with interval ranging from 0.25 to 0.75, while in area B, except for the months of December 2011, June and September 2012 with a moderate SDI, all the others showed a weak SDI with values below 0.25. Geostatistical analysis has shown itself to be an ideal tool to evaluate Citrus leprosis virus (CiLV) spatial distribution.
DOI: 10.6084/m9.figshare.14326911.v1
title: Physiological characteristics in seeds of the common bean under multicollinearity and conditions of salinity

description: ABSTRACT The objective of this work was evaluate multicollinearity effect and discard the variables which are based on multicollinearity reduction in diversity analysis of common bean genotypes, related to seeds physiological quality, in different salinity levels in germination substrate. The common bean seed germination test for six cultivars and seven landrace genotypes was performed in paper rolls (germitest), imbibed in NaCl solutions on the osmotic potentials of 0.0; -0.3 and - 0.6 MPa, maintained in germinated Mangelsdorff type at temperature of 25 °C, on constant light. The experimental design was completely randomized in factorial arrangement 13 x 3 (genotype x osmotic potential), with four replications with 25 seeds, totaling 100 seeds per treatment. The carried out evaluations were: weight of a thousand seeds, germination mean time, primary root protrusion in five and nine days after seeding, normal seedling percentage, hypocotyl and primary root length and dry matter from aerial part and roots. The multicollinearity diagnosis was carried out on the phenotypic correlation matrix and the characteristic discard was preceded through the canonical variable technique. To evaluate the multicollinearity effect, the Tocher cluster method was used before and after the variables discard. The proposed discard methodology of variables is efficient on the multicollinearity reduction and the number of discarded physiological quality descriptors is higher on the potentials of -0.3 and -0.6 MPa, under salt stress conditions, need to be discarded three characteristics and in the absence of stress only two discarded, to became a weak condition of multicollinearity to follow with the cluster analysis. The common bean genotypes clusters are different on the severe and weak multicollinearity only under salt stress condition.
DOI: 10.6084/m9.figshare.14326911
title: Physiological characteristics in seeds of the common bean under multicollinearity and conditions of salinity

description: ABSTRACT The objective of this work was evaluate multicollinearity effect and discard the variables which are based on multicollinearity reduction in diversity analysis of common bean genotypes, related to seeds physiological quality, in different salinity levels in germination substrate. The common bean seed germination test for six cultivars and seven landrace genotypes was performed in paper rolls (germitest), imbibed in NaCl solutions on the osmotic potentials of 0.0; -0.3 and - 0.6 MPa, maintained in germinated Mangelsdorff type at temperature of 25 °C, on constant light. The experimental design was completely randomized in factorial arrangement 13 x 3 (genotype x osmotic potential), with four replications with 25 seeds, totaling 100 seeds per treatment. The carried out evaluations were: weight of a thousand seeds, germination mean time, primary root protrusion in five and nine days after seeding, normal seedling percentage, hypocotyl and primary root length and dry matter from aerial part and roots. The multicollinearity diagnosis was carried out on the phenotypic correlation matrix and the characteristic discard was preceded through the canonical variable technique. To evaluate the multicollinearity effect, the Tocher cluster method was used before and after the variables discard. The proposed discard methodology of variables is efficient on the multicollinearity reduction and the number of discarded physiological quality descriptors is higher on the potentials of -0.3 and -0.6 MPa, under salt stress conditions, need to be discarded three characteristics and in the absence of stress only two discarded, to became a weak condition of multicollinearity to follow with the cluster analysis. The common bean genotypes clusters are different on the severe and weak multicollinearity only under salt stress condition.
DOI: 10.6084/m9.figshare.14326912
title: Cause and effect of quantitative characteristics on grain expansion capacity in popcorn

description: ABSTRACT Knowledge of the direction and degree of association between two or more characteristics may contribute to increase efficiency in the selection of superior genotypes. The aim of this study was to evaluate phenotypic, genotypic and environmental correlations, as well as the direct and indirect effects of path analysis, for the most suitable selection, using expansion capacity and its primary and secondary components, in diallel hybrids of popcorn. Accordingly, 90 diallel hybrids and a control (IAC 112) were planted both in and out of season in Campos dos Goytacazes, in the State of Rio de Janeiro, following a randomised block design. The characteristics under evaluation were: cycle (CO); plant height (AP); ear height (AE); stem diameter (DC); hundred grain weight (M100); grain expansion capacity (CE); Grain yield (PG); prolificacy (PR); grain length (CG), grain width (LG) and grain thickness (EG). Analysis of the phenotypic (rf), genotypic (rg) and environmental (ra) correlations were carried out, followed by breakdown of the simple correlation coefficients obtained from path analysis into their direct and indirect effects on the main variable CE. The results showed a significant high negative genotypic correlation between the EC and PG of -0.67, demonstrating the difficulty of obtaining hybrids with both a high EC and PG. The variables M100 and PG have the greatest association with expansion capacity, albeit negative. Both the CG and LG have a direct negative influence, and the EG, a direct positive influence, on expansion capacity.