Growth Components And Yield Of Brachiaria Ruziziensis (Congo Grass) And Centrosema Pascuorum (Centro) Mixtures As Influenced By Mixture Ratios, Phosphorus Levels And Stage Of Harvest,
2023
Abubakar Tafawa Balewa University, Nigeria
Growth Components And Yield Of Brachiaria Ruziziensis (Congo Grass) And Centrosema Pascuorum (Centro) Mixtures As Influenced By Mixture Ratios, Phosphorus Levels And Stage Of Harvest, I. Sani, J. T. Amodu, R. J. Tanko, M. R. Hassan, N. Adamu
IGC Proceedings (1997-2023)
This study was conducted during the 2017 and 2018 rainy season at the Crop Production Research farm, Abubakar Tafawa Balewa University, Bauchi to determine the effects of plant mixture ratios in Brachiaria ruziziensis and Centrosema pascuorum (100% Sole B. ruziziensis, 75% B.R: 25% C.P, 50% B.R: 50% C.P, 25% B.R: 75% C.P and 100% Sole C. pascuorum) and phosphorus fertilizer (SSP) levels (0, 100 and 150kg/ha). The experiment was in a split-plot design with 5x3 factorial arrangement in which the mixture ratios constituted the main plots while phosphorus (SSP) levels constituted the sub treatments. Number of plants per …
A Solution To Weed Control In Grassland Containing White Clover,
2023
Corteva Agriscience
A Solution To Weed Control In Grassland Containing White Clover, E. Bardsley, T. Schulz, R. Bentley, V. Van Damme, D. Gurney, N. Blanchier, B. B. Sleugh
IGC Proceedings (1997-2023)
Productive grass with white clover can lead to advantages both in forage quantity and quality, economics and in meeting wider expectations detailed in recent EU and UK policy. The ability to achieve this agronomic success is currently difficult due to a lack of options for broad spectrum weed control that also allow establishment or preservation of a white clover population. The aim of this paper is to demonstrate that 3730XL, developed by Corteva Agriscience, is a solution to this critical success factor. Data is presented from 16 efficacy trials (10 from established grassland and 5 from newly sown) where white …
Climate Change And Legume Performance In Grassland Agroecosystems,
2023
University of Florida
Climate Change And Legume Performance In Grassland Agroecosystems, Lynn E. Sollenberger, M. M. Kohmann
IGC Proceedings (1997-2023)
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,
2023
Universidad Nacional Agraria La Molina, Peru
Cattle Diet Composition Under A Short- Duration Grazing With And Without Deferment In Puna Rangelands, R. E. Tácuna, E. R. Flores
IGC Proceedings (1997-2023)
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,
2023
Jataí Federal University, Brazil
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 (1997-2023)
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 …
Canopy Changes Of Brachiaria Managed Under Continuous Stocking In The Dry-Water Transition,
2023
Jatai Federal University, Brazil
Canopy Changes Of Brachiaria Managed Under Continuous Stocking In The Dry-Water Transition, M. T. Maciel, A. L. Bocchi, V. L. Banys, A. L. A. Castro, E. A. Collao-Sanez
IGC Proceedings (1997-2023)
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 demography of tillers of Urochloa brizantha cv. Paiaguás and Urochloa spp. cv. Convert under fixed and continuous stocking with steers supplemented with pelleted concentrate supplied in the trough or on the ground in the water/dry transition period. The experiment was carried out in the Jatai Federal University, from March to June 2020, in a completely randomized design and …
Impact Of Dry Matter At Ensiling On Final Ph And Nutritive Value Of Mixed Cool-Season Haylage,
2023
University of Kentucky
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 (1997-2023)
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,
2023
University of Kentucky
Cool-Season Perennials And Stability In Year-Round Forage Production Systems, C. D. Teutsch
IGC Proceedings (1997-2023)
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 …
Impact Of Fertilizer Type, Seeding Coating, And Duration Of Exposure On The Germination Of Red Clover Seed,
2023
University of Kentucky
Impact Of Fertilizer Type, Seeding Coating, And Duration Of Exposure On The Germination Of Red Clover Seed, C. D. Teutsch, Edwin L. Ritchey
IGC Proceedings (1997-2023)
Legumes are important components in grassland ecosystems. Red clover is one the most used legumes in the transition zones states like Kentucky. To maintain legumes in grass pastures, improved red clover varieties are often overseeded in the late-winter or early-spring. In many cases seed is mixed with fertilizer and top-dressed onto pastures. Little data are available on the impact of fertilizer type or duration of exposure on the germination of raw and coated red clover seed. The objective of this study was to evaluate the impact of two fertilizer types, muriate of potash and a blended fertilizer (urea, diammonium phosphate, …
Effect Of The Hydrological Keyline Design On The Growth And Quality Of The Naturalized Grassland In The Dry Central Zone Of Chile,
2023
Universidad de O’Higgins, Chile
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 (1997-2023)
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,
2023
Universidad de Concepción, Chile
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 (1997-2023)
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 …
Stocking Rates And Carrying Capacity Of Grazing Lands In Bale Mountain National Park And Adjacent Areas, Southeast Ethiopia,
2023
Haramaya University, Ethiopia
Stocking Rates And Carrying Capacity Of Grazing Lands In Bale Mountain National Park And Adjacent Areas, Southeast Ethiopia, Mohammed Abdulahi, Habtamu Teka, Hadis Tadele
IGC Proceedings (1997-2023)
Knowledge of grazing land carrying capacity and grazing pressure in and around protected areas is very crucial to support decision making over sustainable grazing levels and developing grazing pressure reduction strategies. However, there was lack of studies conducted on livestock carrying capacity and grazing pressure in the connected and dynamic system over a wider landscape scale. Hence, this study was conducted to estimate the livestock stocking rates and carrying capacity of grazing lands in Bale Mountain National Park (BMNP) and adjacent districts grazing lands, southeast Ethiopia. Three categories of data: Field surveys, satellite imagery, and socioeconomic secondary data were used. …
Grazing Effects On Soil Seed Banks: A Global Synthesis,
2023
Gansu Agricultural University, China
Grazing Effects On Soil Seed Banks: A Global Synthesis, Shi Yafei
IGC Proceedings (1997-2023)
Livestock grazing is a major disturbance affecting plant diversity and abundance in terrestrial ecosystems. The intermediate disturbance hypothesis (IDH) predicts that moderate-intensity grazing should produce the highest species diversity, while the Milchunas-Sala-Lauenroth (MSL) model posits that the IDH is valid only for mesic areas. However, it remains unclear how grazing affects soil seed bank and whether or not the IDH or MSL models are valid for soil seed bank communities. Here, we presented a global meta-analysis synthesizing 483 observations: we found that grazing had a negative effect on soil seed bank abundance, but did not alter seed bank richness. Further …
Effects Of Warming And Nitrogen Addition On Soil Enzyme Activities,
2023
Inner Mongolia Agricultural University, China
Effects Of Warming And Nitrogen Addition On Soil Enzyme Activities, X. Zhang, G. D. Han
IGC Proceedings (1997-2023)
Due to the intensification of human activities, global warming and increased atmospheric nitrogen deposition have become important driving factors of global change. In order to understand the effects of long-term warming and nitrogen application on soil physical and chemical properties and enzyme activities, the effects of warming and nitrogen application on grassland soil enzyme activities were measured. The aim was to reveal the response of enzyme activity in an Inner Mongolian desert steppe to long-term warming and nitrogen addition. The results were as follows. In 2018, nitrogen fertilization significantly increased soil dehydrogenase activity, and soil depth significantly affected soil urease, …
Additive Negative Effects Of Decadal Warming And Nitrogen Addition On Grassland Community Stability,
2023
Inner Mongolia Agricultural University, China
Additive Negative Effects Of Decadal Warming And Nitrogen Addition On Grassland Community Stability, Q. Wu, G. D. Han, S. X. Chang, H. Y. Ren
IGC Proceedings (1997-2023)
Much recent research has explored how global warming and increased nitrogen (N) deposition, two important components of global environmental changes, influence the structure and functioning of natural ecosystems. However, how ecosystem dynamics respond to the combination of long-term warming and N enrichment remains largely unexplored. The impact of warming and N addition on the temporal stability of plant communities were investigated in a decade-long field experiment. The study was conducted in northern China in a desert steppe, using a split-plot design with warming as the main-plot factor and N addition as the splitplot factor. Long-term warming and N addition had …
Plantain (Plantago Lanceolata L.) Growth Islimited Under Waterlogging,
2023
Massey University, New Zealand
Plantain (Plantago Lanceolata L.) Growth Islimited Under Waterlogging, S. S. Wilson, Daniel J. Donaghy, D. J. Horne, Soledad Navarrete, P. D. Kemp
IGC Proceedings (1997-2023)
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 …
Grass-Next – A Process-Based Model To Explore Nutrient And Carbon Dynamics In Topographically Complex Grazed Grasslands,
2023
AgResearch, New Zealand
Grass-Next – A Process-Based Model To Explore Nutrient And Carbon Dynamics In Topographically Complex Grazed Grasslands, F. Bilotto, Ronaldo Vibart, Alec D. Mackay, M. Harrison
IGC Proceedings (1997-2023)
Topographical features such as slope and aspect influence primary production, animal behavior and nutrient return to grazed grasslands. A new model was developed based on data collected during 40+ years of research in hill country landscapes, a long-term experiment on varying phosphorus (P) fertilizer rates and associated sheep stocking regimes. The Grass-NEXT model was able to simultaneously simulate total soil P (TSP), soil organic carbon (SOC) and total soil nitrogen (TSN) stock change and distribution in a topographically complex (hill country) landscape from 2003 to 2020. This model provided a basis for exploring, accounting, and reporting on changes in TSP, …
Discrepancies Between Observed And Predicted Climate-Driven Net Herbage Accumulation,
2023
AgResearch, New Zealand
Discrepancies Between Observed And Predicted Climate-Driven Net Herbage Accumulation, Alec D. Mackay, Michael B. Dodd, K. J. Hutchinson, Ronaldo Vibart, F. Bilotto
IGC Proceedings (1997-2023)
The decline in net herbage accumulation (NHA) on the high phosphorus (P) fertilizer farmlet (HF) of a long-term P fertilizer and associated sheep grazing experiment in the last 25 years, aligns with the necessity to reduce the on-site nominal sheep stocking rates over the same period on this farmlet. This finding appears at odds with projected climate change driven modelling that forecast a largely positive outcome on pasture growth in summer moist environments. In this paper we explore the apparent discrepancies between the observed and predicted climate-driven NHA by using a climate-driven pasture growth module within a larger process-based model …
Beyond The Boom: Integrated Approaches To Managing Weeds And Brush,
2023
Texas A&M University
Beyond The Boom: Integrated Approaches To Managing Weeds And Brush, M. L. Treadwell, D. Burson
IGC Proceedings (1997-2023)
William Bray stated in his 1904 report, The Timber of the Edwards Plateau of Texas, "This struggle of the timberlands to capture the grasslands is an old warfare....it spreads like infection.” This trend is true today and especially pronounced in the Great Plains, where only 1/4 of the Great Plains’ original grasslands remains intact. Species like honey mesquite, honey locust, black locust, sumac, dogwood, post oak, winged elm, Siberian elm, salt cedar, huisache, Eastern redcedar, Ashe and redberry juniper, pricklypear, sericea lespedeza, and many other species represent alarming rates of spread and rapid establishment throughout Great Plains grasslands. Although, these …
Impact Of Brown Midrib Trait On The Decomposition Rate Of Sorghum-Sudangrass Residue In Pastures,
2023
University of Kentucky
Impact Of Brown Midrib Trait On The Decomposition Rate Of Sorghum-Sudangrass Residue In Pastures, C. D. Teutsch, B. P. Dooley, J. A. Bush, B. L. Hendrix
IGC Proceedings (1997-2023)
Sorghum-sudangrass (Sorghum bicolor var. bicolor x bicolor var. sudanense) can provide high quality summer grazing. Some varieties possess the brown midrib (BMR) trait which results in reduced lignin resulting in higher digestibility and animal performance. If microbes in the rumen can digest BMR sorghum-sudangrass more completely, then soil macro/micro flora and fauna may do so as well. This could result in nutrients being returned to the soil faster from plants containing the BMR trait. The objective of this study was to determine the decomposition rate of BMR and non-BMR sorghumsudangrass. The experimental design was a random complete with four …
