171,407 research outputs found
Potencial de utilização de gramíneas tropicais na alimentação de vacas leiteiras
No full textTCC (graduação em Agronomia) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, 2011Objetivou-se, entre os meses de fevereiro a abril de 2011, avaliar o potencial de utilização da grama missioneira gigante, do capim setária e do capim elefante anão na alimentação de vacas lactantes na unidade de gado leiteiro no Centro de Treinamento da Epagri em Tubarão - SC. Utilizaram-se 4 vacas da raça Holandesa alimentadas exclusivamente a pasto, manejadas em sistema de pastejo rotacionado com taxa de lotação variável. As amostragens das forrageiras foram feitas em pré e pós pastejo objetivando avaliar o potencial quantitativo das forrageiras, enquanto o potencial qualitativo foi avaliado através de amostragens obtidas por simulação de pastejo. O delineamento experimental foi o inteiramente casualizado, com três tratamentos (forrageiras), quatro repetições (piquetes) e parcelas subdivididas no tempo (dois períodos deocupação dos piquetes). Os resultados médios estimados, respectivamente da grama missioneira gigante, do capim setária e do capim elefante anão, de produção de matéria seca foram de 1.769,80; 1.399,23 e 2.224,62 Kg de MS/ha, para a capacidade de suporte foram de 2,96; 2,34 e 3,72 UA/ha, de consumo diário de matéria seca por animal foram de 13,74; 14,53 e 13,17 Kg de MS/dia/UA, para o potencial de conversão em leite diário por animal foram de 17,89; 20,12; e 17,13 litros de leite/dia/UA e para o potencial de conversão em leite diário por hectare foram de 52,31; 46,60 e 62,73 litros de leite/dia/ha. Destaca-se o maior potencial de utilização do capim elefante anão em produção de matéria seca, capacidade de suporte e potencial de conversão em leite diário por hectar
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Strains of Blue Grama and Sideoats Grama Evaluated for the Southern Great Plains
No full textStrains of blue grama and sideoats grama were evaluated for forage yield and quality under dryland conditions on the Southern Great Plains. In vitro dry matter digestibility (IVDMD) and crude protein content were determined as measures of forage quality. WW 65 blue grama was the leading strain of blue grama for every parameter measured, but it was significantly greater than the other blue grama strains only in IVDMD. Although no strain of sideoats grama proved superior in forage yield, PMT 328 sideoats grama was highest in crude protein content and was significantly greater than all other strains of sideoats grama in IVDMD. WW 65 blue grama and PMT 328 sideoats grama exhibited superior forage quality with at least comparable forage yield to the other strains of blue grama and sideoats grama, respectively.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202
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Green Needlegrass and Blue Grama Seedling Growth in Controlled Environments
No full textGreen needlegrass [Stipa viridula Trin.] and blue grama [Bouteloua gracilis (H.B.K.) Lag.] possess the C3 and C4 photosynthetic pathways, respectively. Objectives of this study were to compare growth analysis traits of green needlegrass and blue grama and to determine the effects of 2 temperature regimes on seedling growth characteristics of both species. Seedlings of 2 accessions each of green needlegrass and blue grama were grown in growth chambers under 20 degrees C day-15 degrees C night (20-15 degrees C) and 25 degrees C day-20 degrees C night (25-20 degrees C) temperature regimes (with a 15-hr photoperiod). Beginning 2 weeks after planting, seedlings were harvested twice a week for 3 weeks. Growth analysis traits were calculated with data obtained from each harvest using exponential regression equations. Net assimilation rates of blue grama were higher than those of green needlegrass at both temperatures. Seedling growth of blue grama was more rapid at 25-20 degrees than at 20-15 degrees C, while seedling growth of green needlegrass did not differ between temperatures. Blue grama seedlings exhibited higher relative growth rates than green needlegrass seedlings at 25-20 degrees C but not at 20-15 degrees C. Green needlegrass accessions differed for relative growth rates at 25-20 degrees C, which indicated the possibility of selecting for rapid seedling growth.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202
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Grama (Bouteloua Lag.) Communities in a Southeastern Arizona Grassland
No full textFifty stands, representing six common and three rare species of gramas (genus Bouteloua), were sampled for vegetation abundance, species composition, and selected habitat factors. Numerical and statistical procedures were used to aid in obtaining succinct descriptions of the habitat structure of the grama species. Factors such as texture and content of various nutrients of the soils were among those that showed trends. Black grama (B. eriopoda) was found to be associated with soils higher in nitrate, potassium, organic matter, pH, and lime. Most similar to stands of black grama were stands of eludens grama (B. eludens) and sideoats grama (B. curtipendula), which tended to also be associated with sandy clay textured soils and steep, rocky slopes. All stands of eludens grama were found on southerly exposures. Hairy grama (B. hirsuta) and spruce-top (B. chondrosiodes) were most widely distributed and tended to occur together on relatively level sites with clayey, acidic soils. Curly mesquite (Hilaria belangeri) was nearly always associated with these two gramas. Blue grama (B. gracilis) tended to be most abundant on acidic, relatively infertile, sandy clay loam soils.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202
The development of the indefinite article in Medieval and Golden-Age Spanish
No full textPhDUnitary cardinals are a common source for indefinite markers. This thesis is a
quantitative diachronic study of the development of Spanish un, from its cardinal
value to its use as an indefi nite article. Based on a corpus comprising texts from
the thirteenth to the seventeenth century, I present an analysis and chronology of
the main changes undergone by un throughout this period, notably its increasing
use as a marker of non-speci c indefinites, and its further incorporation in generic
noun phrases and predicates.
Additionally, I demonstrate that the development of the plural indefinite determiner
unos is, with a few restrictions, parallel to that of its singular counterpart,
not only in its increasing frequency, but also in its introduction into new contexts.
Furthermore, I present a comparison between un and alg un in terms of speci city
and conclude that although there are evident links between them, both being
inde nite determiners derived from Latin unus, they have always had di erent
functional domains.
Finally, I show that one of the consequences of the incorporation of un into
generic contexts is the rise of the so-called impersonal uno, and explain that this
event is crucial to explain the disappearance of another generic pronoun, omne,
whose last examples are found in the sixteenth century, that is, precisely the
moment where the first instances of impersonal uno occur
Cuvîntu funebru la îmmormîntarea fericitului Archi-Episcopu românu unitu de Făgăraşu şi Mitropolitu de Alba-Julia, Dr. Joanu óre cându Vancea de Butésa, întemplată în 3 Augustu n. 1892 în catedrala mitropolitană din Blaşiu
No full textCuvîntu funebru la îmmormîntarea fericitului Archi-Episcopu românu unitu de Făgăraşu şi Mitropolitu de Alba-Julia, Dr. Joanu óre cându Vancea de Butésa, întemplată în 3 Augustu n. 1892 în catedrala mitropolitană din Blaşiu / ţinutu de Alesandru Grama. - Blaşiu : Tipografia Seminarului greco-catolic, 1892. - 13 p. ; 19 c
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Nitrogen and phosphorus effects on blue grama and buffalograss interactions
No full textSoil water availability and soil texture appear to influence the relative distribution of blue grama [Bouteloua gracilis (H.B.K.) Lag.] and buffalograss [Buchloe dactyloides (Nutt.) Engelman]. However, nutrient gradients may affect competitive interactions where the species occur together and may influence revegetation efforts in abandoned croplands. A greenhouse experiment was conducted to test whether competition between species was prevalent under relatively nutrient-rich vs. nutrient-poor conditions. Blue grama and buffalograss plants were grown in intra- and interspecific pairs under 4 nutrient regimes representing combinations of low and high availabilities of nitrogen (N) and phosphorus (P). Interspecific competition was evident only with high N and P availability. Blue grama exhibited greater aboveground biomass, increased tiller production and higher N and P contents when grown in mixture, compared to monocultures. This was accompanied with a reduction in tiller production and belowground P content in buffalograss grown in mixture. Stolon production in buffalograss was prevalent only with high P. Blue grama had greater biomass than buffalograss regardless of nutrient treatment. Blue grama appears to be more competitive than buffalograss with high nutrient availability and more stress tolerant with low fertility.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202
Blue grama one of the good grasses for range reseeding
No full textPress bulletin containing information on the qualities of blue grama grass as a plant for range reseeding
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Seedling Morphology and Seeding Failures with Blue Grama
No full textMorphological differences between seedlings of blue grama and crested wheatgrass show why plantings of blue grama fail while those of crested wheatgrass succeed. When both species are planted at a depth of 18 mm, crested wheatgrass initiates adventitious roots at the depth of planting and blue grama initiates adventitious roots at an average of only 2 mm below the soil surface. Adventitious roots of blue grama usually die in the harsh environment at this shallow depth.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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