Mass Production And Morphology Of Brauna Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah,
2024
Jatai Federal University, Brazil
Mass Production And Morphology Of Brauna Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, E. A. Collao-Saenz, M. F. P. Carvalho, P. S. Ribeiro, R. A. De O. Rodrigues, T. A. Cavalcante
IGC Proceedings (1977-2023)
Nitrogen is the nutrient that most contributes to increase forage productivity and quality. The objective was to evaluate Brauna brachiaria (Urochloa brizantha cv. Brauna) submitted to nitrogen doses in the Brazilian savannah through the total and green mass production, leaf:stem and brachiaria:weed ratio. Plots were established in a randomized block design, with four replications and four N doses 0, 50, 100 and 150 kg N/ha). After the uniformization cut, the data collect cycles occurred when the canopy reached 30 cm average height. Samples were taken until 15 cm from the ground in an area of 0.25 m2 . …
Persistence Of Perennial Ryegrass, Tall Fescue And Cocksfoot Following Sequential Annual Sowings: Influence Of Species, Cultivar And Pasture Age On Inter-Annual Variability In Yield And Botanical Composition,
2024
AgResearch Grasslands, New Zealand
Persistence Of Perennial Ryegrass, Tall Fescue And Cocksfoot Following Sequential Annual Sowings: Influence Of Species, Cultivar And Pasture Age On Inter-Annual Variability In Yield And Botanical Composition, G. P. Cosgrove, T. R. Maxwell, B. Wynne-Jones, G. R. Edwards, M. R. Staincliffe, Katherine N. Tozer
IGC Proceedings (1977-2023)
The persistence of sown, temperate pasture species is an important determinant of perennial pasture-grass productivity. Defining the traits that affect persistence is essential for improving pasture longevity through plant breeding and for identifying criteria that should be included in cultivar ranking indices such as the DairyNZ, Forage Value Index. Compared with a conventional longitudinal study, in which pasture from a single sowing is monitored over time, repeated annual sowings allow the effects on persistence of sowing year and the ensuing interactions between environment and age of pasture to be identified. A repeated sowings experiment was commenced at two sites: under …
Urochloa Brizantha Cv. Paiaguás Herbage Mass Production Under Continuous Grazing During The Rainy/Dry Transition Period In Brazilian Savanna,
2024
Jatai Federal University, Brazil
Urochloa Brizantha Cv. Paiaguás Herbage Mass Production Under Continuous Grazing During The Rainy/Dry Transition Period In Brazilian Savanna, W. R. Da Silva, M. F. P. Carvalho, P. S. Ribeiro, R. A. De O. Rodrigues, T. A. Cavalcante
IGC Proceedings (1977-2023)
During the transition period between rainy and dry season, unfavorable climatic conditions such as limited water availability, temperature and light limit forage production and quality. Because of the seasonal pattern, it is essential to quantify forage mass for pasture management and planning purposes. The objective of this study was to evaluate Paiaguas herbage mass in pasture managed under continuous stocking with steers supplemented with protein concentrate offered in feed bunk and onground. The experiment was carried out in the Beef Cattle Facilities of Jatai Federal University (UFJ), from March to June 2020, in a completely randomized design, using 18 male …
Micro Mineral Concentrations Of Congo Grass As Affected By Shading And Harvesting Age,
2024
Federal University of Agriculture, Nigeria
Micro Mineral Concentrations Of Congo Grass As Affected By Shading And Harvesting Age, P. A. Dele, J. I. Akinyode, A. A. Eesuola, B. T. Akinyemi, F. E. Enwete, C. C. Anotaenwere, O. I. Awoola, O. L. Aiyesa
IGC Proceedings (1977-2023)
This study investigated the effect of levels of artificial shading and harvesting age on four micro mineral concentrations (iron, manganese, copper and zinc) of Congo grass (Brachiaria ruzizinensis Germain & Evrard). The experiment was a 3 x 3 factorial arrangement in a split plot design with four replicates, which is three levels of artificial shading (0, 30 and 60% shading) as the main plot and three harvesting age (3, 6 and 9 weeks after cutback). The grass was established in May 2017 and grazed in 2018 and 2019, but a cutback was done in May 2020 for this study …
In Vitro Digestibility And Methane Production Of Two Tropical Grasses: Plant Spacing And Grazing Frequency,
2024
Federal University of Agriculture, Nigeria
In Vitro Digestibility And Methane Production Of Two Tropical Grasses: Plant Spacing And Grazing Frequency, F. E. Enwete, P. A. Dele, O. L. Aiyesa, O. I. Awoola, C. C. Anotaenwere, J. I. Akinyode, T. A. Amole, Olufemi S. Onifade
IGC Proceedings (1977-2023)
This study was carried out to investigate the influence of plant spacing and grazing frequency on the in vitro gas production, digestibility, and methane production of Guinea grass (Megathyrsus maximus) and Elephant grass (Cenchrus purpureus) in the humid southwest part of Nigeria. The experiment was laid in a 2 x 2 x 2 factorial arrangement in a split-split-plot design with three replicates, which consisted of two grazing frequency (3 and 6-week) as the main plot, two grass species: Guinea grass (M. maximus) and Elephant grass (C. purpureus) as the sub plot and …
Evaluation Of New Dwarf Elephant Grass Genotypes For Grazing,
2024
EMBRAPA, Brazil
Evaluation Of New Dwarf Elephant Grass Genotypes For Grazing, Carlos A. M. Gomide, R. B. Silva, K. G. Riberiro, F. K. S. Ledo, Domingos S. C. Paciullo, E. M. Barradas
IGC Proceedings (1977-2023)
Elephant grass stands out for its production potential, forage quality and acceptance by animals. However, its tall size makes management under grazing difficult and dwarf cultivars have been selected and evaluated to overcome this limitation. The objective was to characterize agronomic aspects of dwarf elephant grass genotypes submitted to two defoliation intensities. The experiment was installed in a 5 x 2 factorial scheme, with five elephant grass genotypes (2022, 1810, 2111, 2035, BRS Kurumi) and two residue heights after defoliation (25 and 45 cm). A randomized block design with three replications in 4x3m plots was used. Forage above the residue …
Molecular Approaches In The Analysis Of Red Clover Rhizobium Symbiosis,
2024
USDA-ARS Forage-Animal Production Research Unit
Molecular Approaches In The Analysis Of Red Clover Rhizobium Symbiosis, Randy D. Dinkins, L. Koch, M. L. Sullivan, H. Zhu
IGC Proceedings (1977-2023)
Red clover (Trifolium pratense L.) is an important forage and pasture legume grown throughout temperate regions. Because it can form a symbiotic relationship with rhizobium, it is able to fix atmospheric nitrogen. Due to the high cost of nitrogen fertilizers, pasture legumes have been increasingly important in forage production settings. Red clover has not been a model legume primarily due to selfincompatibility and the associated high level of genomic heterozygosity, therefore it has not been a significant contributor in molecular or genetic studies and basic information on red clover legume/rhizobium symbiosis is lacking. Using recently annotated genomic resources, RNA-seq …
Annual Ryegrass Managed For Reseeding Purposes: Relationship Between Heading Date And Seed Production,
2024
INIA, Uruguay
Annual Ryegrass Managed For Reseeding Purposes: Relationship Between Heading Date And Seed Production, Javier Do Canto, D. Giorello
IGC Proceedings (1977-2023)
Annual ryegrass reestablished yearly by allowing natural reseeding is a common practice among Uruguayan farmers. Its success relies on the farmers’ ability to balance grazing and seed production during spring. We tested a set of ryegrass varieties covering a wide range of heading dates under defoliation management. Each variety was managed independently according to its phenological stage, resulting in different closing dates. We tested the varieties’ ability to produce seeds under such management, the effect of heading date on seed yield components, the resulting amount of straw and its effect on summer soil temperatures. A strong negative association between heading …
Variation In Grazing Sward Chicory Content After Periods Of Low Rainfall,
2024
Teagasc, Ireland
Variation In Grazing Sward Chicory Content After Periods Of Low Rainfall, Kevin Dolan, C. Hearn, D. Hennessy, R. Henriques, M. B. Lynch, Michael O’Donovan
IGC Proceedings (1977-2023)
Multispecies (MS) swards can reduce chemical nitrogen (N) fertiliser requirement due to the legume components of the sward mixtures, and have the potential to increase drought tolerance, particularly where chicory (CH, Chicorium intybus L.) is included in the sward mixture. A grazed plot experiment was established to investigate the persistency of forage herb species in MS swards under typical Irish grazing conditions. The swards contained three plant functional groups: grass, legume and herb; four sward types were established which included sward mixtures of the following species: perennial ryegrass (PRG, Lolium perenne L.) white clover (WC, Trifolium repens L.), red clover …
Grass Vegetation Dynamics In Wetlands With Different Utilization,
2024
Thiagarajar College, India
Grass Vegetation Dynamics In Wetlands With Different Utilization, Dorai Pandian Kannan
IGC Proceedings (1977-2023)
The land-use patterns, combined with the biotic interactions, are likely to substantially affect the grass community of tropical wetlands. However, we need more information to understand the vegetation cover and, particularly, the diversity of grasses in the protected sites, where the naturally occurring interactions with extreme complexity. Hence a thorough understanding of these interactive effects on grass dynamics would help develop wildlife management guidelines to predict the grass-woody herbs and other associated vegetation. In light of this, a beta vegetation survey and diversity analysis in two varying wetland ecosystems of natural mountain streams and temporary ponds. Grass communities occurred along …
Weed Management Affects Pasture Productivity And Animal Performance,
2024
University of Florida
Weed Management Affects Pasture Productivity And Animal Performance, José C. B. Dubeux Jr., I. L. Brêtas, L. M. D. Queiroz, H. A. Koury
IGC Proceedings (1977-2023)
Weed can be defined as any plant growing in undesirable locations. Weeds are considered one of the main challenges in agricultural fields. Weeds affect pasture productivity mainly because of the competition for limited resources such as nutrients, water, and light with forage plants. Weeds encroach pastures spontaneously and spread quickly through the farm and neighboring areas, making their control difficult. In addition, weeds can affect forage nutritive value, grazing behaviour, voluntary forage intake, animal health, and consequently animal performance. The low efficiency of mechanical weeding and the global concern about indiscriminate use of herbicides impose challenges for producers in grazing …
Improving Forage Production Practices Of Livestock And Hay Producers,
2024
University of Georgia
Improving Forage Production Practices Of Livestock And Hay Producers, S. Dyer, L. Baxter
IGC Proceedings (1977-2023)
By the year 2060, the U.S. population is expected to reach 417 million, up from 319 million in 2014, according to the U.S. Census Bureau. Following historical trends, the U.S. continues to produce more food with a decreasing amount of land. This is possible because of continuous research and innovation of advanced agricultural technologies. Educating farmers of agricultural best practices and the newest resources available to them to improve their operation is vital to improving overall agricultural production. To improve livestock forage and hay production practices, Dade Extension conducted a monthly forage management series. The series covered an entire year …
Seasonal Performance Of White Clover In Mixed-Sward Grazing Pasture Highlights Genotype By Environment Interaction,
2024
AgResearch, New Zealand
Seasonal Performance Of White Clover In Mixed-Sward Grazing Pasture Highlights Genotype By Environment Interaction, O. Grace Ehoche, Sai Krishna Arojju, Greig Cousins, Jessica O'Connor, Brian Maw, Jennifer A. Tate, Peter J. Lockhart, Mohamed Z. Z. Jahufer, Andrew G. Griffiths
IGC Proceedings (1977-2023)
White clover is an important forage crop because of its nutritional value, ability to provide plantavailable nitrogen via symbiosis with Rhizobium soil bacteria, and year-round availability of dry matter (DM) yield. However, its performance in mixed sward-based pastures is characterised by seasonal variability and declining DM yield over time. The identification of white clover genotypes adapted for across seasonal performance is an important goal in white clover breeding. In this study, we evaluated the seasonal performance of 200 white clover half-sib families using visual growth scores and calibrated dry matter yield based on growth scores measured for three years in …
History And Theory Of Near-Infrared Spectroscopic Analysis (Nirs),
2024
Blue Sun Scientific
History And Theory Of Near-Infrared Spectroscopic Analysis (Nirs), Arnold J. Eilert
IGC Proceedings (1977-2023)
The use of near infrared spectroscopy (NIRS) as an analytical technique has evolved greatly since it was first demonstrated to be a viable method of obtaining molecular compositional information from the “scanning” of a sample. Potential applications of the technology envisioned by early pioneers in the field have been realized or exceeded time after time, and it has now become a very broadly applied means of instrumental analysis. It is worth recalling the historical progression of the technology and the fact that the earliest applications were developed to meet the challenges of agricultural product analysis. In particular, forage analysis is …
Do Grass And Legume Vitamin Contents Change During Extended Growth In Spring?,
2024
Wageningen University, The Netherlands
Do Grass And Legume Vitamin Contents Change During Extended Growth In Spring?, A. Elgersma, Karen Søegaard, S. K. Jensen
IGC Proceedings (1977-2023)
Herbage vitamins affect performance of grazing and grass-fed cattle. In silages, knowledge of vitamin contents in herbage is desired to balance supplements in indoor feeding rations. This is of particular interest in organic farming systems. Information on companion species effects in grass-legume mixtures on changes during prolonged growth is scarce, while this is relevant in view of delayed harvests that frequently occur in practice. Perennial ryegrass (Lolium perenne) was sown with either red clover (Trifolium repens), white clover (Trifolium pratense), lucerne (Medicago sativa) or birdsfoot trefoil (Lotus corniculatus), and white …
Assessing The Nutrient Status Of Alfalfa Stands In Kentucky,
2024
University of Kentucky
Assessing The Nutrient Status Of Alfalfa Stands In Kentucky, William R. Fleming, Christopher D. Teutsch, Edwin L. Ritchey, John H. Grove
IGC Proceedings (1977-2023)
Alfalfa (Medicago sativa L.) is a perennial forage legume and is sometimes referred to as the “Queen of Forages” due to its high nutritional value. Alfalfa is commonly produced as hay for use in the dairy and equine industries. Alfalfa yield increased exponentially from the 1950s to the1980s due to new breeding and management innovations. However, during the 1980s yields plateaued at around 7.5 Mg/ha and remain there today. The overarching goal of this study was to determine the role of soil fertility in the observed yield plateau. Fifty alfalfa stands in Kentucky were sampled to gather information about …
Prospects For Improving Alfalfa Yield Using Genomic- And Phenomic-Based Breeding,
2024
University of California, Davis
Prospects For Improving Alfalfa Yield Using Genomic- And Phenomic-Based Breeding, M. W. Francis, D. Pap, A. Krill-Brown, E. C. Brummer
IGC Proceedings (1977-2023)
Alfalfa (Medicago sativa L.) is a perennial outcrossing legume that is cultivated as an important forage crop in many parts of the world. Yield is the most important trait for profitable alfalfa production, yet over the last 30 years yield improvement in California has stagnated. Current breeding methods focus on recurrent phenotypic selection; however, alternatives incorporating genomic- and phenomic-based information may enhance genetic gain and help to address the lack of yield improvement. Here we attempt to increase the yield potential of alfalfa using genomic selection (GS) in combination with high throughput phenotyping (HTP). A total of 193 families …
Morphogenesis Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah,
2024
Jataí Federal University, Brazil
Morphogenesis Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, V. L. Banys, I. I. Silva, L. V. D. Ribeiro, M. S. Soares, T. P. Evangelista
IGC Proceedings (1977-2023)
Nitrogen fertilization contributes to grass growth and, for this reason, the objective was to evaluate the morphogenic characteristics of Urochloa brizantha cultivar Marandu subjected to different nitrogen rates (0, 50, 100 and 150 kg N.ha-1) in the Brazilian savannah through the variables number of leaves.tiller-1, leaf growth, leaf average size, senescent leaf.tiller-1 number and stem+pseudostem average size. The experiment was established in the Forage and Pastures Sector of Jatai Federal University (UFJ) and, after the soil correction and fertilization, the Marandu grass plots were installed in a randomized blocks experimental design, with four treatments and …
Use Of Limpograss As An Alternative Feed During The Fall Forage Gap In Beef And Dairy Systems In Central And North Florida,
2024
University of Florida
Use Of Limpograss As An Alternative Feed During The Fall Forage Gap In Beef And Dairy Systems In Central And North Florida, L. Garcia, José C. B. Dubeux Jr., Marcelo O. Wallau, J. D. Pereira-Neto, M. A. Bernardini, M. Ruiz-Moreno
IGC Proceedings (1977-2023)
In central and North Florida, the use of limpograss [Hemarthria altissima (Poir.) Stapf & C. E. Hubb.] for beef and dairy operations is limited and its potential use is not well documented. Two on-farm projects have been conducted in Central and North Florida to explore the use of limpograss as an alternative conserved forage during late fall and winter. The potential use of this forage as baleage for dairy farmers and as stockpiling for livestock producers would offer another alternative to reduce feed costs and fill the forage gap in the area when typical warm-season forages go dormant. In …
Ohio Pastures For Profit Online,
2024
The Ohio State University
Ohio Pastures For Profit Online, C. Gelley, E. Lyon, D. Bender, S. Boyles, M. Estadt, C. Finney, A. Gahler, J. Hartschuh, B. Hendershot, A. Holden, C. Jagger, D. Lima, C. Little, J. Morris, C. D. Penrose, R. Purdin, G. Ruff, M. Sulc, C. Turner, G. Wilson, B. Campbell, M. Joyce, T. G. Wiseman
IGC Proceedings (1977-2023)
The Pastures for Profit program is an established course created through a collaboration between Ohio State University Extension, Central State University, USDA-Natural Resources Conservation Service, Ohio Federation of Soil and Water Conservation Districts, Ohio Department of Agriculture, and the Ohio Forage and Grasslands Council. In 2021, due to COVID-19, the Pastures for Profit curriculum was adapted to a virtual classroom setting and was offered again in 2022. The virtual experience consisted of three live webinars pairing with corresponding modules in Scarlet Canvas. Enrolled students were also mailed traditional course materials for personal use. Module content was newly developed and compiled …
