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Climate Change And Legume Performance In Grassland Agroecosystems, Lynn E. Sollenberger, M. M. Kohmann
Climate Change And Legume Performance In Grassland Agroecosystems, Lynn E. Sollenberger, M. M. Kohmann
IGC Proceedings (1977-2023)
We reviewed the literature to assess the effect of climate change factors on forage legumes. Whether growing in monoculture or mixtures with grasses, exposing legumes to elevated CO2 (eCO2) generally leads to sustained increases in forage accumulation (FA) and N fixation, but elevated temperature (eT) in conjunction with eCO2 usually reduces magnitude of these responses. In legumes, nodules represent large C sinks, precluding photosynthetic acclimation to eCO2 observed in non-N fixing plants. Greater N fixation in legume-grass mixtures exposed to eCO2 is due to greater percentage of legume N derived from symbiotic fixation and …
Cattle Diet Composition Under A Short- Duration Grazing With And Without Deferment In Puna Rangelands, R. E. Tácuna, E. R. Flores
Cattle Diet Composition Under A Short- Duration Grazing With And Without Deferment In Puna Rangelands, R. E. Tácuna, E. R. Flores
IGC Proceedings (1977-2023)
The treatments of rest and deferment periods have shown to be effective tools to improve range condition, but little is known about their effect on the diet of animals. The present research aimed to evaluate the effect of the deferment period when applied to a short-term grazing system. The experimental design was a completely random factorial where the treatments resulted from combination of two grazing management systems: short-duration with deferment period (WD) and no deferral period (ND) both evaluated for three years. Forage yield (4.9 vs. 4.5 Tm DM ha-1 year-1) like range condition (55.5 vs. 50.7%) …
Canopy Changes Of Brachiaria Managed Under Continuous Stocking In The Dry-Water Transition, M. R. Castro, A. L. Bocchi, V. L. Banys, A. L. A. Castro, E. A. Collao-Sanez
Canopy Changes Of Brachiaria Managed Under Continuous Stocking In The Dry-Water Transition, M. R. Castro, A. L. Bocchi, V. L. Banys, A. L. A. Castro, E. A. Collao-Sanez
IGC Proceedings (1977-2023)
Pasture supplementation is an alternative to take advantage of the forage mass deferred in the rainy season and maintain or provide weight gain in periods of rain absence. The objective was to compare the structural characteristics, mass production, density and population dynamics of tillers of Urochloa brizantha cv. ‘Paiaguas’ and U. spp. cv. ‘Convert’ under fixed and continuous stocking with steers supplemented in the trough or on the ground in the water/dry transition period. The experiment was carried out at Jatai Federal University, from March to June, in a completely randomized design and a 2x2 factorial scheme, using six …
Impact Of Dry Matter At Ensiling On Final Ph And Nutritive Value Of Mixed Cool-Season Haylage, Christopher D. Teutsch, A. E. Teutsch
Impact Of Dry Matter At Ensiling On Final Ph And Nutritive Value Of Mixed Cool-Season Haylage, Christopher D. Teutsch, A. E. Teutsch
IGC Proceedings (1977-2023)
Harvesting hay as baleage can allow for more timely harvest, especially in spring months when curing conditions are not ideal. Forage conserved as baleage undergoes anaerobic fermentation in which the sugars are converted to lactic acid, lowering final pH. To successfully conserve forage as dry hay, moisture concentrations must be less than 18%. In contrast, the ideal moisture concentration for baleage is between 55 and 65%. There are a number of producers harvesting and wrapping hay that is not quite “dry enough” to bale but is too dry to ensile. This produces a product commonly referred to by producers as …
Cool-Season Perennials And Stability In Year-Round Forage Production Systems, C. D. Teutsch
Cool-Season Perennials And Stability In Year-Round Forage Production Systems, C. D. Teutsch
IGC Proceedings (1977-2023)
Changes in long-term climate normals have resulted in warmer and wetter summers and milder winters in the humid eastern United States. This will likely impact regional forage species adaptation in the long-term and varietal adaptation in the short term. Variety evaluation has been occurring at the University of Kentucky for almost 100 years. There are several considerations for selecting forage species and varieties including regional and local adaptation, productivity, distribution of growth, palatability, nutritive value, anti-quality factors, tolerance to stress, and persistence. Two of the most important criteria are long-term productivity and persistence under grazing, both of which are currently …
Effect Of The Hydrological Keyline Design On The Growth And Quality Of The Naturalized Grassland In The Dry Central Zone Of Chile, P. Toro-Mujica
Effect Of The Hydrological Keyline Design On The Growth And Quality Of The Naturalized Grassland In The Dry Central Zone Of Chile, P. Toro-Mujica
IGC Proceedings (1977-2023)
The effect of climate change in the central, semi-arid zone of Chile has altered precipitation patterns, shortening the growing season of the naturalized annual grasslands and reducing forage yields. Water harvesting techniques such as the hydrological keyline design, may improve the distribution of precipitation, reduce erosion, and enhance soil water harvesting. It may therefore reduce the impact of climate change in rainfed areas. A trial was implemented to evaluate the effect of the keyline water harvesting practice on soil variables, and pasture production and quality in three farms of the semi-arid O'Higgins region. Rains began in April and amounted to …
Spectral Reflectance Indices Associated With Biomass Production Of Cold Stress Resistant White Clover Genotypes Collected In Argentine And Chilean Patagonia, Hernán Acuña, Luis Inostroza, Catalina Vásquez, Joel Ibañez
Spectral Reflectance Indices Associated With Biomass Production Of Cold Stress Resistant White Clover Genotypes Collected In Argentine And Chilean Patagonia, Hernán Acuña, Luis Inostroza, Catalina Vásquez, Joel Ibañez
IGC Proceedings (1977-2023)
White clover (Trifolium repens L.) is the main forage legume species in grazing pastures in central and southern Chile and many other temperate regions of the world. Its growth rate is limited by low temperature, therefore, the selection of cold stress resistant genotypes is an important step for breeding cultivar to improve the clover growth curve and extend the grazing season in early spring and autumn. The main objective of this experiment was to determine the relationship between phenotypic traits, measured by the high-throughput phenotyping procedures based on canopy reflectance at different wavelengths (spectral reflectance indices, SRIs), and dry …
Plantain (Plantago Lanceolata L.) Growth Islimited Under Waterlogging, S. S. Wilson, Daniel J. Donaghy, D. J. Horne, Soledad Navarrete, P. D. Kemp
Plantain (Plantago Lanceolata L.) Growth Islimited Under Waterlogging, S. S. Wilson, Daniel J. Donaghy, D. J. Horne, Soledad Navarrete, P. D. Kemp
IGC Proceedings (1977-2023)
Plantain (Plantago lanceolata L.; PL) is becoming an increasingly important component of New Zealand dairy pastures because of its ability to reduce nitrogen losses to the environment. However, widespread suggestions of its poor persistence, have led to industry concern over its suitability for dairy systems. Anecdotal evidence suggests that PL does not cope well in waterlogged soil, yet there is little scientific literature relevant to this issue. Thus, the aim of this study was to investigate the impact of waterlogging stress on PL growth and survival. In a glasshouse, the performance of PL under waterlogging was evaluated against perennial …
Impact Of The Brachiaria Hybrids On Both Soil Health And Carbon Stock On Livestock Production, A. Silva, T. Madeira, D. Florian, E. A. Pizarro, R. N. Jauregui, G. Lobato, A. Santi, D. Fagundes, F. Pinheiro, A. Rieger, A. Cagliari
Impact Of The Brachiaria Hybrids On Both Soil Health And Carbon Stock On Livestock Production, A. Silva, T. Madeira, D. Florian, E. A. Pizarro, R. N. Jauregui, G. Lobato, A. Santi, D. Fagundes, F. Pinheiro, A. Rieger, A. Cagliari
IGC Proceedings (1977-2023)
Pastures occupy 30% of Earth and 80% of the entire agricultural area of the planet. To ensure food to the world and contribute to the quality of the environment, pasture-based animal production systems will also have to undergo through a more intense evolution. The intensification of tropical grasslands is an important strategy of land utilization in developing countries, contributing to increase production and minimize environmental impact through the best management practices. In this sense, the use of Brachiaria hybrids represents an excellent option, since combining the best traits of different Brachiaria species, with higher nutritive value, forage, and seed yield. …
Evaluating Functional Diversity As Potential Early-Warning Indicator Of Rangeland Degradation, L.-M. Schwarz, C. P. Carmona, M. C. Bilton, F. Munyebvu-Chambara, K. Behn, A. Linstädter
Evaluating Functional Diversity As Potential Early-Warning Indicator Of Rangeland Degradation, L.-M. Schwarz, C. P. Carmona, M. C. Bilton, F. Munyebvu-Chambara, K. Behn, A. Linstädter
IGC Proceedings (1977-2023)
Droughts and overgrazing play a crucial role in the degradation of semi-arid rangelands. This is evident in the loss of palatable long-lived grass species and bush encroachment. Early warning indicators are needed to mitigate long-term degradation and decline in essential forage provision. Functional diversity provides valuable information on ecosystem health. However, functional diversity indices have not yet been tested regarding their applicability as early warning indicators, revealing non-linear threshold behaviour. We therefore examined the following questions: (1) How do functional diversity indices respond to grazing pressure? (2) Does land tenure affect the relationship between functional diversity and grazing pressure? (3) …
Integrating Grazing With 2,4-D And Florpyrauxifen To Control Broadleaf Weeds And Maintain Red Clover Productivity In Grass-Legume Pastures, M. J. Renz, G. M. Imhoff
Integrating Grazing With 2,4-D And Florpyrauxifen To Control Broadleaf Weeds And Maintain Red Clover Productivity In Grass-Legume Pastures, M. J. Renz, G. M. Imhoff
IGC Proceedings (1977-2023)
In grass-legume pastures, 2,4-D-amine + florpyrauxifen-benzyl controls broadleaf weeds but red clover (Trifolium pratense L.) is eliminated. Grazing within a week prior to herbicide application is likely to reduce leaf surface area and may reduce red clover injury and maintain productivity. Experiments were conducted in 2020 and in 2021 to determine if red clover could be productive when 560 g ae ha-1 2,4-D-amine + 6.3 g ae ha-1 of florpyrauxifen-benzyl with 1% v/v methylated seed oil applied in the spring was grazed before or after herbicide application. Grazing timings occurred 6, 4, or 2 days prior to herbicide …
Enhancing Milk Production Of Lactating Camels In Kenya Via Supplementation Of The Invasive Cactus (Opuntia Stricta) In The Diet, W. O. Owino, Lucy W. Ikanya, J. G. Maina, C. K. Gachuiri, José C. B. Dubeux Jr.
Enhancing Milk Production Of Lactating Camels In Kenya Via Supplementation Of The Invasive Cactus (Opuntia Stricta) In The Diet, W. O. Owino, Lucy W. Ikanya, J. G. Maina, C. K. Gachuiri, José C. B. Dubeux Jr.
IGC Proceedings (1977-2023)
Climate change leading to prolonged and recurrent droughts, changes in land use, primarily settlement of pastoralists, followed by overgrazing and subsequent land degradation, has made the highly drought resistant opuntia flourish and be aggressively invasive in the Kenya’s rangelands. Camel keeping has increasingly replaced cattle as a climate adaptation strategy and also as a result of a steady increase in demand for camel milk due to the associated nutritional and health benefits,To address the challenge of lack of pasture during prolonged drought, there is the need to utilize the invasive cactus as fodder. The invasive cactus can be a kind …
Vicuñas’ (Vicugna Vicugna Mensalis) Diet Composition Under Community Management In The Puna Grasslands, Katherine Capuñay, Samuel Pizarro, Javier Ñaupari
Vicuñas’ (Vicugna Vicugna Mensalis) Diet Composition Under Community Management In The Puna Grasslands, Katherine Capuñay, Samuel Pizarro, Javier Ñaupari
IGC Proceedings (1977-2023)
The objective of the present study was to determine the composition of the vicuña (V. vicugna mensalis) diet at the end of the drought period (November, 2019) in the San Cristobal de Lucanas Community, in the department of Ayacucho, Peru. Eight sites were chosen, where vicuñas were observed grazing in Pajonal (tussock grassland), Cesped (short grassland), Pajonal-Cesped and Tholar-grass. For the botanical composition of the diet, fecal samples were collected in 80 dung piles, which were prepared for microhistological analysis and determined the plants consumed in the vicuña’s diet. The botanical composition of the diets in the different …
Grass Diversity And Pasture Quality Baseline Assessement In Central Madagascar, O. P. Nanjarisoa, L. Randriamanalina, Wayne F. Truter, M. T. Rajaonah, C. E. R. Lehmann, C. Birkinshaw, L. Rakotonirina, D. Miarinjanahary, N. L. Raharinirina, M. S. Vorontsova
Grass Diversity And Pasture Quality Baseline Assessement In Central Madagascar, O. P. Nanjarisoa, L. Randriamanalina, Wayne F. Truter, M. T. Rajaonah, C. E. R. Lehmann, C. Birkinshaw, L. Rakotonirina, D. Miarinjanahary, N. L. Raharinirina, M. S. Vorontsova
IGC Proceedings (1977-2023)
Poaceae family contributes to Madagascar’s biodiversity hotspot with 217 of 541 grass species endemic to the island, although their forage value is unknown, at least in the scientific literature. Our research aims 1) to describe the diversity of native and endemic grasses thereby recognising the role of grass species diversity in forage and ecosystem management and 2) to provide new knowledge about pasture management based on the relationship between grazing capacity and productivity within experimental pastureland plots under different fire and grazing treatments. Our study seeks to provide information to inform improvements in livestock nutrition via grazing management of natural …
Effects Of Proximity To Roads On Tissue Surface Ph, Conductivity And Heavy Metal Contents Of A Grazing Grass Species, C. Munyati, M. S. Mathole
Effects Of Proximity To Roads On Tissue Surface Ph, Conductivity And Heavy Metal Contents Of A Grazing Grass Species, C. Munyati, M. S. Mathole
IGC Proceedings (1977-2023)
Globally, road networks are expanding in the countryside. Though beneficial to society, the roads potentially have detrimental effects on grazing quality. The effects are seldom quantified. In this study Eragrostis lehmanniana, a common native grazing grass in parts of the world, was examined for indicative data on the impacts of roads on grasses. Aboveground tissue samples were collected monthly on three occasions during the growing season, at the same respective locations near three high traffic highways. Non-senescent specimens were sampled along transects of up to 400 m perpendicular to the highways, starting from the road edge and then at …
Screening Annual Ryegrass For Increased Tolerance To Blast (Pyricularia Oryzae), C. M. Adams, B. S. Baldwin, J. L. Morrison
Screening Annual Ryegrass For Increased Tolerance To Blast (Pyricularia Oryzae), C. M. Adams, B. S. Baldwin, J. L. Morrison
IGC Proceedings (1977-2023)
Annual ryegrass [Lolium perenne L. spp. multiflorum (Lam.) Husnot] is a high-quality forage utilized heavily in the Southeast for pasture and grazing. Gray Leaf Spot (Pyricularia oryzae) is a fungal pathogen that infects gramineous species and is a common problem in perennial and annual ryegrass stands. This study was designed to screen for resistance to P. oryzae in the annual ryegrass cultivar Vertyl (PI 619473, FRA) and a heat-tolerant germplasm (HTARG5) derived from Marshall (PI 600770, USA) with intent to use recurrent phenotypic selection to crossbreed the two accessions. Marshall was also included as a susceptible reference …
Tiller Demography Within Synthetic Grass Populations, K. J. Moore, C. Córdova
Tiller Demography Within Synthetic Grass Populations, K. J. Moore, C. Córdova
IGC Proceedings (1977-2023)
Like other populations of biological organisms, the collective aging structure of a population of grass tillers has meaning and consequences far beyond the development of an individual within it. Using various methods, it is possible to assign numerical indices to tiller development so that it can be described numerically. By sampling a population of tillers and assigning a numerical index to each, the average stage of tillers within a population can be calculated and a repeatable assessment of its development determined. The average or mean stage count (MSC) of tiller development is commonly calculated and used to compare the development …
An Investigation On Food Habits Of Persian Gazelle In Cheshmeh Gol Reproduction Station Of Khorasan Province, Iran, I. Mohammdi-Abiz, Kamal Naseri, Mansour Mesdaghi, H. Yazdandad
An Investigation On Food Habits Of Persian Gazelle In Cheshmeh Gol Reproduction Station Of Khorasan Province, Iran, I. Mohammdi-Abiz, Kamal Naseri, Mansour Mesdaghi, H. Yazdandad
IGC Proceedings (1977-2023)
Persian gazelle (Gazella subgutturosa) is one of the most important wild species in Iran. This species prefers plain and low hill habitats which are dominated by sagebrush (Artemisia sieberi). However, due to extensive hunting and habitat destruction, the populations of gazelle were declined and this valuable species was recorded as threatened species in 2006. To rehabilitate the habitats of gazelle and improve their productivity, Cheshmeh-Gol captive reproduction station with an area of 50 hectares was established. To provide more reliable information on diet requirements of gazelle, direct observation and cafeteria feeding on captive animals were employed. …
Natural Regeneration Of Severely Degraded Terrestrial Arid Ecosystems Needs More Than Just Removing The Cause Of The Degradation, M. Louhaichi, M. Gamoun, N. Al Hashash, F. Al-Ameer, D. Alrashedi, A. Redha, F. Alkandari, A. Niane
Natural Regeneration Of Severely Degraded Terrestrial Arid Ecosystems Needs More Than Just Removing The Cause Of The Degradation, M. Louhaichi, M. Gamoun, N. Al Hashash, F. Al-Ameer, D. Alrashedi, A. Redha, F. Alkandari, A. Niane
IGC Proceedings (1977-2023)
Rangelands cover over 75% of Kuwait’s total land area. Most of these rangelands are severely degraded because of overgrazing, poor anthropic utilization, and mismanagement. Restoring natural rangelands is a way to increase forage productivity, enhance biodiversity, and achieve sustainable development. When degradation has not reached the point of irreversibility, natural restoration through resting is one of the best low-cost restoration techniques. This study evaluated the effect of natural restoration on vegetation cover and species richness in the desert rangelands of Kuwait. The studied rangeland was a completely fenced area of 1 km2. The percent of vegetation was measured using the …
Belowground Productivity In Patches Of Heterogeneous Grass Swards After Nearly Two Decades Of Low-Intensity Cattle Grazing, M. Komainda, J. Isselstein
Belowground Productivity In Patches Of Heterogeneous Grass Swards After Nearly Two Decades Of Low-Intensity Cattle Grazing, M. Komainda, J. Isselstein
IGC Proceedings (1977-2023)
In low-input grassland, patch-grazing leads to tall and short patches that provide different growth conditions for the grass sward. Since belowground biomass and the associated turnover represent the main carbon input to soil in grassland, we investigated within-pasture variation of above- and belowground net primary production in relation to patches over one year of production in a long-term grazing experiment during the year 2022. The analysis of above- and belowground net primary production showed an effect of patch types, partly in interaction with the month, indicating a strong variation due to climatic conditions. In those few cases where differences existed …
Activity Budget And Foraging Patterns Of Nubian Giraffes (Giraffa Camelopardalis Camelopardalis) In Lake Nakuru National Park, Kenya, Consolata G. Gitau, J. S. Mbau, R. K. Ngugi, A. B. Muneza, E. Ngumbi
Activity Budget And Foraging Patterns Of Nubian Giraffes (Giraffa Camelopardalis Camelopardalis) In Lake Nakuru National Park, Kenya, Consolata G. Gitau, J. S. Mbau, R. K. Ngugi, A. B. Muneza, E. Ngumbi
IGC Proceedings (1977-2023)
How animals decide to spend their time has a key impact on their survival and reproduction. These behavioral decisions are shaped by ecological and environmental factors, such as seasonal changes. Foraging patterns show how an animal chooses to forage in its environment as influenced by resource availability, competition, and predation risk. Giraffe activity budget has been investigated in populations across Africa and found to be influenced by body size, diet composition, and sex. The activity budget and foraging patterns of Nubian giraffes vary considerably between ecosystems. The Nubian giraffe, a subspecies of the Northern giraffe species (Giraffa Camelopardalis) …
Ecosystem Services Provided By Overseeding Aeschynomene Into Bahiagrass Pastures In South Florida, J. Garzon, João M. B. Vendramini, Maria L. S. Silveira, José C. B. Dubeux Jr., H. L. Liao, Lynn E. Sollenberger, H. M. S. Da Silva, V. C. Gomes, H. M. R. Oliveira, A. Erhunmwunse
Ecosystem Services Provided By Overseeding Aeschynomene Into Bahiagrass Pastures In South Florida, J. Garzon, João M. B. Vendramini, Maria L. S. Silveira, José C. B. Dubeux Jr., H. L. Liao, Lynn E. Sollenberger, H. M. S. Da Silva, V. C. Gomes, H. M. R. Oliveira, A. Erhunmwunse
IGC Proceedings (1977-2023)
Aeschynomene (Aeschynomene americana L.) is a warm-season annual legume commonly overseeded into warm-season perennial grass pastures in tropical and subtropical regions. Although aeschynomene usually increases forage production and nutritive value, there is limited information about the ecosystem services provided by this legume. The objective of these studies was to evaluate the effects of overseeding aeschynomene into bahiagrass (Paspalum notatum Flüggé) pastures on nutrient dynamics and microbial N-cycling gene abundances. The studies were conducted in Ona, FL, from April to March 2019-2020 and 2020-2021. Treatments were the split-plot arrangement of two forage systems treatments (overseeding aeschynomene into bahiagrass or …
Sustainable Intensification Of Livestock Systems Using Forage Legumes In The Anthropocene, José C. B. Dubeux Jr., D. M. Jaramillo, E. R. S. Santos, L. Garcia, L. M. D. Queiroz, K. R. Trumpp
Sustainable Intensification Of Livestock Systems Using Forage Legumes In The Anthropocene, José C. B. Dubeux Jr., D. M. Jaramillo, E. R. S. Santos, L. Garcia, L. M. D. Queiroz, K. R. Trumpp
IGC Proceedings (1977-2023)
Sustainable intensification of livestock systems implies greater efficiency in resource utilization resulting in greater output of products and other ecosystem services per unit of resource input. Strategies to improve resource use efficiency include diversification of plant and ruminant species with complementary resource use. Forages that have root systems with contrasting architecture and exploring different soil layers with complementary use of resource acquisition (e.g., nutrients, water) could enhance primary productivity. Belowground interactions with soil microbiota (e.g., mycorrhizae) is key to enhance resource utilization. Forages with complementary canopy characteristics that helps enhancing light interception and utilization could also lead to greater resource …
Grazing Cover Crops For Soil Health In An Integrated Crop-Livestock System, Forrest E. Davis, J. Brett Rushing
Grazing Cover Crops For Soil Health In An Integrated Crop-Livestock System, Forrest E. Davis, J. Brett Rushing
IGC Proceedings (1977-2023)
. Optimizing soil health requires building an environment that creates conditions which allow for best function of the chemical, biological, and physical properties of the soil to thrive as an organism and an ecosystem. Integrated crop-livestock systems (ICLS) use a systems approach to provide improvements to soil health parameters. In the fall of 2021, a randomized complete block study was conducted at the Coastal Plain Branch Experiment Station (CPBES) in Newton, Mississippi and at the Prairie Research Unit (PRU) in Prairie, Mississippi to observe the soil health effects of grazing cereal rye cover crops in a soybean production system. Three …
Short-Term Soil Organic Matter And Carbon Responses To Contrasting Grazing Intensities In Integrated Crop-Livestock Systems, Erick R. Da Silva Santos, Jose C. B. Dubeux, B. G. C. Homem, Cheryl L. Mackowiak, Lynn E. Sollenberger, D. Wright
Short-Term Soil Organic Matter And Carbon Responses To Contrasting Grazing Intensities In Integrated Crop-Livestock Systems, Erick R. Da Silva Santos, Jose C. B. Dubeux, B. G. C. Homem, Cheryl L. Mackowiak, Lynn E. Sollenberger, D. Wright
IGC Proceedings (1977-2023)
Combining integrated crop-livestock systems under no-till management may improve soil organic matter (SOM) build up and improve soil C sequestration. Grazing cover crops appears as a possibility to combine crops and livestock in a farm system. Further SOM and soil C increase can be achieved by adding perennial grasses into crop rotations. However, the effect of grazing intensity in such systems are not fully understood. This 2-yr study investigated short-term effects of cropping system [winter cover crops-summer cotton (Gossypium hirsutum L.) and winter cover crops-summer bahiagrass (Paspalum notatum Flüggé) rotations], grazing intensity (no grazing, heavy, moderate, and light …
Productive Grasslands – The Role Of Adapted Species To Increase Ecosystems Resilience, M. B. Chiavegato, A. F. Mammana, C. Y. Rodriguez
Productive Grasslands – The Role Of Adapted Species To Increase Ecosystems Resilience, M. B. Chiavegato, A. F. Mammana, C. Y. Rodriguez
IGC Proceedings (1977-2023)
Producers are interested in diversifying grazing systems with native warm-season grasses. Climate variations may result in extreme weather events. For instance, recent studies show strong evidence pointing to an increasing frequency of flooding in the central US, due to changes in both seasonal rainfall and temperature across this region. In a constantly changing climate, adapted species play a crucial role in increasing ecosystems resilience and resistance to extreme weather events. Native grasses may be well adapted to the future changes on climatic conditions, with wide ecological amplitude and resistance under different conditions. Use of adapted warm season grasses, associated with …
Identification And Characteristics Of Phosphate-Solubilizing Endophytic Bacteria From Root Nodules Of Lespedeza Daurica, K. Y. Yang, C. Huang, P. Gao, Y. P. Liang, Y. P. Han, X. Zhao
Identification And Characteristics Of Phosphate-Solubilizing Endophytic Bacteria From Root Nodules Of Lespedeza Daurica, K. Y. Yang, C. Huang, P. Gao, Y. P. Liang, Y. P. Han, X. Zhao
IGC Proceedings (1977-2023)
Endophytic phosphate-solubilizing bacteria from root nodules could promote stress resistance, nodulation and nitrogen fixation. In this study, nodule endophytic bacteria of Lespedeza daurica were isolated by plate streaking, the bacteria with phosphate-solubilizing abilities were selected and the phosphate-solubilizing abilities were determined. The results showed that 88 endophytic bacterial strains were isolated and among which 11 strains possessed phosphate-solubilizing abilities. The organic phosphorus solubility of TG41, TG43, TG47 and TG68 were 0.73~0.86 μg·mL-1 ; the inorganic phosphorus solubility of TG47 and TG68 were 72.97 and 1.29 μg·mL-1 , respectively. The four strains were identified as effective phosphate-solubilizing bacteria. TG41 …
Biodiversity—The Birds And The Bees And Healthy Grasslands, D. Borrenpohl, Pat D. Keyser
Biodiversity—The Birds And The Bees And Healthy Grasslands, D. Borrenpohl, Pat D. Keyser
IGC Proceedings (1977-2023)
Losses in biodiversity abound in modern agroecosystems, and biodiversity loss hampers ecosystem function and primary productivity comparable to abiotic stress. One of the most endangered ecosystems in the world is North American tallgrass prairie, and native birds and pollinators that historically depended on tallgrass prairie are in precipitous decline. Fortunately, native warm-season grasses that dominated tallgrass prairie present a valuable opportunity for summer forage to beef producers in the Eastern United States—a time when coolseason grasses endure a lack in productivity called the “summer slump.” Tallgrass prairie was sustained by periodic disturbance from grazing and fire, and combining fire and …
Using Functional Ecology To Predict Restoration Success In Managed Grasslands, J. Bergman
Using Functional Ecology To Predict Restoration Success In Managed Grasslands, J. Bergman
IGC Proceedings (1977-2023)
Plants have developed remarkable functional variation over evolutionary time to cope with different environmental conditions. As a result, functional variation – measurable as functional traits above and below ground – can be found within but also among grassland communities today. The functional space covered by a community is thereby restricted by environmental factors while each single species within the community inhabits a specific niche with a certain breadth along different environmental gradients. Data from field sampling in European grasslands have shown, that species intraspecific functional variation can cover considerable amounts of possible functional spaces, hence holding the potential to establish …
Effect Of Soil Nitrogen And Water Content On The Establishment Of A Lolium Perenne L. And Trifolium Repens L. Pasture, M. F. Alonso, Oscar A. Balocchi, I. Calvache, O. Martínez
Effect Of Soil Nitrogen And Water Content On The Establishment Of A Lolium Perenne L. And Trifolium Repens L. Pasture, M. F. Alonso, Oscar A. Balocchi, I. Calvache, O. Martínez
IGC Proceedings (1977-2023)
Climate change has decreased rainfall in Southern Chile affecting the productivity of the grasslands that sustain the dairy and beef cattle industries. These grasslands are mainly mixtures of Lolium perenne L. and Trifolium repens L. Thus, we study the response on the establishment of a mixture of these two species to three levels of soil water content and two levels of nitrogen (N) fertilization. The trial was carried out in containers sowed in a complete randomized block´s design. Soil moisture measurements were taken daily. N fertilizations was applied at the establishment and every 60 days. Leaf appearance rate was measured …