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Articles 1501 - 1530 of 10860
Full-Text Articles in Entire DC Network
The Business Case For Healthy Grasslands-Based Agriculture – Economic And Social Implications, E. Bisangwa, Pat D. Keyser
The Business Case For Healthy Grasslands-Based Agriculture – Economic And Social Implications, E. Bisangwa, Pat D. Keyser
IGC Proceedings (1977-2023)
Native perennial warm-season grasses (NWSGs) of the United States (U.S.) provide valuable summer forage. Studies have shown their potential within grazing systems as a complement to cool-season forages, as well as their benefits to soil biota, wildlife biodiversity, carbon sequestration and their resiliency to extreme drought and flood events. In this paper, we demonstrate that, in addition to these benefits, NWSGs provide important economic value to beef and dairy producers as a hedge against financial risks posed by overreliance on cool-season grasses.
Breeding Forage Grasses For Increased Heat Tolerance To Combat Climate Change, Eric D. Billman, J. S. Morrison, B. S. Baldwin
Breeding Forage Grasses For Increased Heat Tolerance To Combat Climate Change, Eric D. Billman, J. S. Morrison, B. S. Baldwin
IGC Proceedings (1977-2023)
The onset of climate change brings many challenges for forage production in the southeastern United States, where it is projected to become hotter and dryer in the next century. To combat this climatic challenge, recurrent phenotypic selection was conducted in growth chambers on annual ryegrass (Lolium multiflorum Lam.) and orchardgrass (Dactylis glomerata L.) to select seedlings that can germinate and survive at temperatures of 40°C. Following three cycles of selection, germination was increased from < 5% to 45% in annual ryegrass, and from 20% to 80% in orchardgrass. The rate of germination also increased, in both species by a factor of 8x that of the base germplasm. Realized heritability also increased by 40 – 45% for each species by the end of the project. This work successfully improved a quantitative trait using recurrent phenotypic selection using growth chambers as a stable environment and provided the basis for combatting climate change in other outcrossing forage species.
Industry Perspectives, Challenges, And Opportunities To Enhance Alfalfa In Warm Climates, J. H. Bouton
Industry Perspectives, Challenges, And Opportunities To Enhance Alfalfa In Warm Climates, J. H. Bouton
IGC Proceedings (1977-2023)
Alfalfa (Medicago sativa L.; aka lucerne) acreage is low in comparison to perennial grasses in warm humid regions. This includes the tropics and subtropics, and in the USA, the Southeastern states. The alfalfa seed industry therefore saw few reasons to target sales and marketing in these regions. This overlooked logical opportunities. In this paper, these opportunities are examined for Southeastern USA. The Southeast contains a majority of beef herd, a high percentage of the dairy herd, and millions of acres suitable for conversion to alfalfa. Alfalfa is also now viewed as the best crop to solve problems inherent with …
Palatability Of Alfalfa (Medicago Sativa L.) And Orchard Grass (Dactylis Glomerata L.) Silages, R. D. Améndola-Massiotti, J. A. Burgueño, M. Concepción, L. Cruz
Palatability Of Alfalfa (Medicago Sativa L.) And Orchard Grass (Dactylis Glomerata L.) Silages, R. D. Améndola-Massiotti, J. A. Burgueño, M. Concepción, L. Cruz
IGC Proceedings (1977-2023)
The objective was to compare palatability with different methodologies for characterizing silages at Chapingo Autonomous University, México. Eight silages were used resulting from an experiment which evaluated effects of cutting time (08:00 and 14:00), time of wilting (0, 1 and 2 h) and use of lactic bacteria inoculant on properties of alfalfa (Medicago sativa L.) and orchard grass (Dactylis glomerata L.) silages. Organoleptic properties (odor, color, texture, moisture) were assessed by trained observers, using as categories: excellent, good, fair and poor. Dry matter content, CO2 rate of production and pH were also measured. For the evaluation of …
The Future Of Clovers In Forage Systems And As Cover Crops, J. H. Bouton, John R. Caradus
The Future Of Clovers In Forage Systems And As Cover Crops, J. H. Bouton, John R. Caradus
IGC Proceedings (1977-2023)
Clovers (Trifolium spp.) are the most widely used genera of legumes in forage systems, although only a limited number of the hundreds of perennial and annual species are commercially available. The number of varieties available within each of the main commercial species can be high and demonstrates past breeding achievements. Success relates to any clover’s ability to persist in mixtures with other forage species, across a range of soil types, management systems, and climates, while providing animal nutrition and biologically fixed nitrogen benefits. Uses range from traditional pasture mixtures with grasses to inclusion in multi-species mixtures, and as cover …
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
IGC Proceedings (1977-2023)
Understanding relationships among canopy light interception (LI), canopy height and structure, and leaf area index (LAI) informs management decisions and can improve efficiency of forage-livestock systems. In a long-term experiment in Florida, USA, we assessed the LI, LAI and sward height relationships of rhizoma peanut (Arachis glabrata Benth., RP)-bahiagrass (Paspalum notatum Flügge) mixed swards compared with bahiagrass monoculture to determine whether changes in canopy structure affect herbage accumulation (HA) rate due to changes in radiation use. Treatments were arranged in a semi-factorial, split-plot design (r=4). Bahiagrass monoculture and bahiagrass-RP mixtures were whole-plot treatments. Sub-plot treatments were an undefoliated …
Herbage Accumulation And Mass In Massai Grass Plots Mixed With Forage Peanut And Fertilized With Nitrogen, Carlos A. B. Carvalho, M. O. Leal Junior, P. P. Carneiro, J. V. B. Ramos, N. Schultz, J. C. C. Almeida, A. J. Paiva
Herbage Accumulation And Mass In Massai Grass Plots Mixed With Forage Peanut And Fertilized With Nitrogen, Carlos A. B. Carvalho, M. O. Leal Junior, P. P. Carneiro, J. V. B. Ramos, N. Schultz, J. C. C. Almeida, A. J. Paiva
IGC Proceedings (1977-2023)
The objective of this work was to evaluate herbage accumulation and mass during the growing season of Massai grass mixed with peanut forage and fertilized with nitrogen. The work was carried out at Federal Rural University of Rio de Janeiro, Brazil, from 11/2021 to 03/2022. A randomized block experimental design was used, in plots of Massai grass Megathyrsus maximus, in a factorial arrangement, with seven replications. Four treatments formed by the combination of the presence or absence of Archis pintoi and nitrogen fertilization (0 and 50 kg ha-1 of N). Canopy heights of the plots were evaluated weekly …
Brs Sarandi: A New Andropogon Gayanus Cultivar For Tropical Pastures, Marcelo A. Carvalho, C. E. F. Lazarini, Allan K. B. Ramos, Gustavo J. Braga, Claudio T. Karia
Brs Sarandi: A New Andropogon Gayanus Cultivar For Tropical Pastures, Marcelo A. Carvalho, C. E. F. Lazarini, Allan K. B. Ramos, Gustavo J. Braga, Claudio T. Karia
IGC Proceedings (1977-2023)
BRS Sarandi is adapted to low and medium fertility soils. It has a medium-high height, with a semi-erect growth habit and a high total number of tillers. The annual productivity of dry matter is 11 t ha-1, concentrated in the rainy season (90%). Of the total DM produced, 60% are leaves. The levels of crude protein (CP), in vitro dry matter digestibility (IVDMD), neutral detergent fiber (NDF) and acid detergent fiber (ADF) are, on average, 8.7, 56.5, 66.7 and 38.2%, respectively. . The average daily weight gain was 0.7 kg/head/day, the gain per was and 1.7 kg ha-1 day with …
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
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 . …
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
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, P. A. Dele, J. I. Akinyode, A. A. Eesuola, B. T. Akinyemi, F. E. Enwete, C. C. Anotaenwere, O. I. Awoola, O. L. Aiyesa
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, F. E. Enwete, P. A. Dele, O. L. Aiyesa, O. I. Awoola, C. C. Anotaenwere, J. I. Akinyode, T. A. Amole, Olufemi S. Onifade
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, Carlos A. M. Gomide, R. B. Silva, K. G. Riberiro, F. K. S. Ledo, Domingos S. C. Paciullo, E. M. Barradas
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, Randy D. Dinkins, L. Koch, M. L. Sullivan, H. Zhu
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 …
Weed Management Affects Pasture Productivity And Animal Performance, José C. B. Dubeux Jr., I. L. Brêtas, L. M. D. Queiroz, H. A. Koury
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, S. Dyer, L. Baxter
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, 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
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 …
Do Grass And Legume Vitamin Contents Change During Extended Growth In Spring?, A. Elgersma, Karen Søegaard, S. K. Jensen
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, William R. Fleming, Christopher D. Teutsch, Edwin L. Ritchey, John H. Grove
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, M. W. Francis, D. Pap, A. Krill-Brown, E. C. Brummer
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 …
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
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 …
Effect Of Using A Prototype Aerator On The Botanical Composition And Fodder Production On Grassland With Low Soil Porosity, Piotr Goliński, Barbara Golińska
Effect Of Using A Prototype Aerator On The Botanical Composition And Fodder Production On Grassland With Low Soil Porosity, Piotr Goliński, Barbara Golińska
IGC Proceedings (1977-2023)
Permanent grasslands located on some organic soils can be sensitive to compaction due to the use of agricultural machinery and their natural tendency for compactness. The aim of our study was to determine the effect of using innovative own constructed aerator on sward botanical composition, dry matter yield and forage quality. The study also looked at the physical properties of the meadow soil. The research was carried out in 2018-2019 using a single-factor field experiment established on a dairy farm located in Wielkopolska region on grassland with the natural organic peat-muck soil compaction. The aerator was constructed by the farmer …
Inhibiting Dhurrin Biosynthesis Effects On Stocker Cattle Daily Gains, S. M. Gruss, K. D. Johnson, R. P. Lemenager, M. R. Tuinstra
Inhibiting Dhurrin Biosynthesis Effects On Stocker Cattle Daily Gains, S. M. Gruss, K. D. Johnson, R. P. Lemenager, M. R. Tuinstra
IGC Proceedings (1977-2023)
Climate change has made resilient crops more valuable in many agricultural production systems. Sorghum is an important resilient grain and forage crop due to its high drought tolerance and ability to thrive in low-N environments. All current commercial sorghum varieties produce the cyanogenic glucoside dhurrin. Cell maceration causes the conversion of dhurrin to hydrogen cyanide (HCN), which is toxic to animals. Toxicity symptoms range from labored breathing and convulsions to death within minutes. The dhurrin biosynthesis pathway was altered to inhibit dhurrin production by a mutation that inactivated CYP79A1, the first enzyme in the pathway. The dhurrin-free phenotype eliminates the …
Perennial Ryegrass ‘Virazón’, A New Cultivar For Warm Temperate Areas In Uruguay And South America., Felix Gutiérrez, Javier Do Canto, R. Reyno, C. Rossi, A. Stewart, M. Carrere, F. Nolla
Perennial Ryegrass ‘Virazón’, A New Cultivar For Warm Temperate Areas In Uruguay And South America., Felix Gutiérrez, Javier Do Canto, R. Reyno, C. Rossi, A. Stewart, M. Carrere, F. Nolla
IGC Proceedings (1977-2023)
‘Virazón’ perennial ryegrass (Lolium perenne L.), a grazing-type tetraploid cultivar, was developed by the National Institute of Agricultural Research (INIA) in Uruguay as a part of the Joint Venture with PGG Wrightson Seeds and Grasslands Innovation Limited and commercially available since 2021. ‘Virazón’ was developed after 6 cycles of selection from crosses with cultivar Horizon from New Zealand based on climate adaptation, dry matter production, vigor, rust resistance, seed yield, and persistence under Uruguayan conditions. The aim was to obtain a perennial ryegrass with 3 years of consistent production. ‘Virazón’ was evaluated in forage yield trials in comparison with …
Short-Term Effect Of Forage Grasses On Carbon Sustainability, Fodder Security, And Soil Properties In Poor Soils Of Semi-Arid India, H. M. Halli, P. Govindasamy, M. Choudhary, R. Srinivasan, M. Prasad, Vinod K. Wasnik, Vijay Kumar Yadav, A. K. Singh, S. Kumar, D. Vijay
Short-Term Effect Of Forage Grasses On Carbon Sustainability, Fodder Security, And Soil Properties In Poor Soils Of Semi-Arid India, H. M. Halli, P. Govindasamy, M. Choudhary, R. Srinivasan, M. Prasad, Vinod K. Wasnik, Vijay Kumar Yadav, A. K. Singh, S. Kumar, D. Vijay
IGC Proceedings (1977-2023)
Grasses are essential sources of fodder for livestock and provide options for climate resilience due to their broad range of adoption. They are also valuable resources for soil quality enhancement. Therefore, a six-year field study using nine grasses (2013 to 2019) was initiated in a semi-arid region of central India. The study aimed to assess the short-term impact of these nine grasses on soil carbon stock, selected soil physiochemical and biological properties, and green fodder yield. Results (after six years) revealed that a greater carbon stock (7.0 and 7.2 Mg ha–1), carbon sustainability index (71.6 and 89.3), and …
Improving Frost Seeding Accuracy With An Entry Level Gps Unit, B. L. Hendrix, Christopher D. Teutsch, J. Jackson, C. Raymond
Improving Frost Seeding Accuracy With An Entry Level Gps Unit, B. L. Hendrix, Christopher D. Teutsch, J. Jackson, C. Raymond
IGC Proceedings (1977-2023)
Guidance utilizing GPS has long been used for various operations in row crop agriculture. However, the high cost of these systems has limited their use in low-input forage and livestock operations. Reduced prices and the availability of used guidance systems have the potential to increase the use of precision agriculture in pastoral settings. In the past, frost seeding often resulted in areas that received no seed and areas that were double seeded. The objective of this experiment was to evaluate the impact of using a guidance system on the uniformity of seed dispersal. This study was conducted at the University …
Application Of Fall Nitrogen Increased Spring Tall Fescue Yield, B. L. Hendrix, Christopher D. Teutsch, J. Duckworth
Application Of Fall Nitrogen Increased Spring Tall Fescue Yield, B. L. Hendrix, Christopher D. Teutsch, J. Duckworth
IGC Proceedings (1977-2023)
Late season nitrogen fertilization is a practice that has long been implemented in turfgrass production. This practice involves applying nitrogen from September through December and results in an extended green period in the fall without stimulating excessive shoot growth. The longer green period results in higher levels of carbohydrate reserves and enhanced root growth compared with a spring-summer fertilization program. In addition to these benefits, sods fertilized in late fall have been shown to green up two to six weeks earlier in the spring. Limited research has considered the impact of late fall nitrogen applications on grass growth in hayfields …
Looking At Cell Wall Components With Our Customers In Mind, D. J. Heuschele, Z. Xu, J. F. S. Lamb, H. J. Jung, D. A. Samac
Looking At Cell Wall Components With Our Customers In Mind, D. J. Heuschele, Z. Xu, J. F. S. Lamb, H. J. Jung, D. A. Samac
IGC Proceedings (1977-2023)
Fiber digestibility of alfalfa for animal nutrition is a complex system encapsulating animal, plant, and microbe biological traits. Understanding all components within the system is key to predicting forage quality. We investigated the relationship between alfalfa cell wall components and invitro neutral detergent fiber digestibility (IVNDFD) speed (16-hr) and potential (96-hr) of by cattle ruminant microbes. A composite alfalfa (Medicago sativa L.) population from seven commercial cultivars underwent two cycles of bidirectional selection for plants with low or high stem 16-hr IVNDFD and low or high stem 96-hr IVNDFD. The resulting selected populations were then evaluated by near inferred spectrometry …
A Global Perspective Of Epichloë Endophyte Toxicity In Sown Pastures, David E. Hume, S. C. Finch
A Global Perspective Of Epichloë Endophyte Toxicity In Sown Pastures, David E. Hume, S. C. Finch
IGC Proceedings (1977-2023)
The asexual Epichloë fungal endophytes that form mutualistic, obligate, asymptomatic associations with ryegrasses (Lolium spp.) and tall fescue (Festuca arundinacea) are critical components of pastures in the USA, Australia and New Zealand. Research has convincingly demonstrated that these endophytes enhance agronomic performance of their grass hosts, due to protection from biotic and abiotic stresses such as insect pests and drought. However, although beneficial in terms of enhancing forage quantity, the widespread occurrence of ‘common-toxic’ strains of endophyte negatively impacts the quality of forage for livestock. These bioprotective and anti-quality properties are due to endophyte-expressed secondary metabolites. It …
Alfalfa Response To Phosphorus And Potassium Fertility And Harvest Management, M. A. Islam, M. M. Baidoo
Alfalfa Response To Phosphorus And Potassium Fertility And Harvest Management, M. A. Islam, M. M. Baidoo
IGC Proceedings (1977-2023)
Balanced nutrition of phosphorus (P) and potassium (K) is needed for improving alfalfa (Medicago sativa L.) productivity. Availability and uptake of P and K by alfalfa for yield response can depend on their relative levels with soil calcium (Ca2+) and magnesium (Mg2+) in combination with harvest management. An experiment was conducted at the University of Wyoming Sustainable Agriculture Research and Extension Center to determine the alfalfa’s response to P and K in association with Ca, Mg, and harvest time. Treatments were 10 selected combinations (kg ha-1) of three levels of P (0, 34, …