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2022

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Articles 5731 - 5760 of 6505

Full-Text Articles in Earth Sciences

Development Of A Remote Monitoring System For Coal Mine Automatic Drilling Rigs, Wang Tianlong, Ma Bin, Dong Hongbo Jan 2022

Development Of A Remote Monitoring System For Coal Mine Automatic Drilling Rigs, Wang Tianlong, Ma Bin, Dong Hongbo

Coal Geology & Exploration

According to the policies on the manufacturing of national energy equipment, coal mine robots and intelligent development of coal mines as well as the trend of intelligent development of coal equipment, a remote monitoring system of automatic drilling rigs for coal mines is developed to monitor the automatic drilling rig remotely on the ground by using sensor measurement, software development, virtual reality, network communication, video monitoring and other technologies. The problems of incomplete parameter display, insufficient effective monitoring and inconvenient maintenance of the existing underground coal mine drilling rig are solved. The remote monitoring system includes the main rig, onboard …

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Development And Application Of A Mine-Used Dynamic Azimuth Gamma Instrument While Drilling, Chen Long, Chen Gang, Zhang Jiguan Jan 2022

Development And Application Of A Mine-Used Dynamic Azimuth Gamma Instrument While Drilling, Chen Long, Chen Gang, Zhang Jiguan

Coal Geology & Exploration

Gas drainage borehole along coal seams is the most direct and effective gas control method at present. As a common basis for identifying coal bearing formations, natural gamma can tell whether the borehole trajectory is in the target layer according to the formation radioactivity. However, the existing mine-used gamma logging tools can only carry out sliding drilling measurement, which are not applicable to compound drilling or rotary steering drilling, and cannot meet the working condition of continuous gamma dynamic measurement. On the basis of the analysis of the characteristics of the working conditions of MWD and the principle of gamma …

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Key Technologies And Engineering Practice Of 3d Laser Scanning In Coal Mine Roadways, Wang Haijun, Liu Zaibin, Lei Xiaorong, Han Baoshan, Lu Ziqing Jan 2022

Key Technologies And Engineering Practice Of 3d Laser Scanning In Coal Mine Roadways, Wang Haijun, Liu Zaibin, Lei Xiaorong, Han Baoshan, Lu Ziqing

Coal Geology & Exploration

Intelligent and unmanned mining is an inevitable trend in the development of the coal industry. Precise geological information detection is one of the current key research and development directions in the construction of smart coal mines. The precise detection of information on roadways and the rapid acquisition of three-dimensional roadway models are important data sources for geological transparence. Through a comparative analysis of traditional roadway modeling methods and their advantages and disadvantages, a technical idea of using three-dimensional laser scanning reconstruction technology to construct a high-precision transparent working face roadway model is proposed. On the basis of the analysis of …

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Forage Quality Of Cereal–Common Vetch At Different Age And Proportions, J. L. Zaragoza-Ramirez, P. A. Martinez-Hernandez, Ma. De L. Reyes-Medel Jan 2022

Forage Quality Of Cereal–Common Vetch At Different Age And Proportions, J. L. Zaragoza-Ramirez, P. A. Martinez-Hernandez, Ma. De L. Reyes-Medel

IGC Proceedings (1977-2023)

Cereal plant age at harvesting and the proportion of vetch in the harvested forage from cereal-common vetch mixtures might influence total forage quality. The objectives were to determine forage of a forage mixture cereal-vetch, from cereal harvested at two development stages and vetch at different proportion. Cereals were oats and triticale, cultivars: Chihuahua, Bicentenario and Siglo XXI, the last two were triticale; cereal development stages at harvest were: 50% flowering and hard grain. Vetch was harvested at two development stages: 100% flowering and pod formation, while vetch proportions in the forage mix were: 0, 0.25, 0.5, 0.75 and 1.0. Forage …

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Forage Yield Of Oat On The Four Altitude Regions Of The Qinghai-Tibetan Plateau, H. B. Zhang, C. T. Liu, J. Q. Deng, X. L. Yang Jan 2022

Forage Yield Of Oat On The Four Altitude Regions Of The Qinghai-Tibetan Plateau, H. B. Zhang, C. T. Liu, J. Q. Deng, X. L. Yang

IGC Proceedings (1977-2023)

Forage oat (Avena sativa L.) for livestock in Qinghai-Tibet Plateau may be used biomass under widely different altitude conditions. To assess the effect of altitude on the biomass of oats, we conducted an experiment to explore the adaptability of forage oat Jiayan No. 2 in different altitudes for better agronomic traits and higher forage yield. Four regions included Hezheng county (2207 m a.s.l) and Tianzhu county (2407 m a.s.l), Gansu province, Haiyan county (3042 m a.s.l), Qinghai province and Hongyuan county (3460 m a.s.l), Sichuan province were selected, and agronomic data as well as dry matter yield were determined. …

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Forage Production And Grazing Behaviour Of Beef Cattle In Agrosilvopastoral Systems In Brazil During The Dry Season, M. Pereira, P. Zawada, J. Werner, M. M. Macedo, R. G. Almeida, U. Dickhoefer Jan 2022

Forage Production And Grazing Behaviour Of Beef Cattle In Agrosilvopastoral Systems In Brazil During The Dry Season, M. Pereira, P. Zawada, J. Werner, M. M. Macedo, R. G. Almeida, U. Dickhoefer

IGC Proceedings (1977-2023)

We aimed at evaluating the microclimate, canopy structure, and grazing behaviour of cattle on Brachiaria sp. pastures within continuous pasture (CON), integrated crop-livestock (ICL), and crop-livestock-forestry (ICLF) systems in Brazilian dry season. Forage accumulation was monthly assessed in four paddocks per system from May to August 2019. To characterize the microclimate, air temperature and relative humidity were measured every hour and temperature-humidity index calculated. Grazing behaviour of 12 Nellore heifers per system (mean bodyweight 355 standard deviation±32.6 kg) was recorded by chewing sensors on nine continuous days (1 d adaptation + 8 d measurement) of three 15-d periods. Four animals …

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Forage Accumulation And Quality Of Three Contrasting Ecotypes Of Tall Fescue (Schedonorus Arundinaceus) Managed Under Frequent Defoliation, J. Mattera, O. Scheneiter, I. Cattoni, E. Pacente, P. Barletta, O. Bertín Jan 2022

Forage Accumulation And Quality Of Three Contrasting Ecotypes Of Tall Fescue (Schedonorus Arundinaceus) Managed Under Frequent Defoliation, J. Mattera, O. Scheneiter, I. Cattoni, E. Pacente, P. Barletta, O. Bertín

IGC Proceedings (1977-2023)

In the past, tall fescue ecotypes were compared under intermediate management defoliation frequency, but now has station, Argentina (-33 ° 56 'S, -60 ° 33' W) in autumn 2016, on a typical Argiudoll soil. The treatments were cultivars representing three ecotypes of tall fescue: (i) - Mediterranean (cv. Flecha), (ii) - Intermediate (cv. Royal Q 100) and (iii) - Continental (cv. Lujan INTA). Each plot consisted of 7 rows 6.0 m long, 0.2 m apart (8.4m2 plot size) arranged in a randomized complete block design with 4 replicates. The first cut was done at the end of September when …

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Modeling Vapor Transfer In Soil Water And Heat Simulations: A Modularized, Partially-Coupled Approach, Zhuangji Wang, Dennis Timlin, David Fleisher, Wenguang Sun, Sahila Beegum, Sanai Li, Ya Chen, Vandimalla R. Reddy, Katherine Tully, Robert Horton Jan 2022

Modeling Vapor Transfer In Soil Water And Heat Simulations: A Modularized, Partially-Coupled Approach, Zhuangji Wang, Dennis Timlin, David Fleisher, Wenguang Sun, Sahila Beegum, Sanai Li, Ya Chen, Vandimalla R. Reddy, Katherine Tully, Robert Horton

Nebraska Water Center: Faculty Publications

Coupled water and heat transfer models are widely used to analyze soil water content and temperature dynamics, evaluate agricultural management systems, and support crop growth modelling. In relatively dry soils, vapor transfer, rather than liquid water flux, becomes the main pathway for water redistribution. However, in some modularized soil simulators, e.g., 2DSOIL (Timlin et al., 1996), vapor transfer is not included, which may induce errors in soil water and heat modelling. Directly embedding vapor transfer into existing water and heat transfer modules may violate the modularized architecture of those simulators. Therefore, the objectives of this study are to design a …

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Future Of Winter In Northeastern North America: Climate Indicators Portray Warming And Snow Loss That Will Impact Ecosystems And Communities, Elizabeth Burakowski, Alix Contosta, Danielle Grogan, Sarah Nelson, Sarah Garlick, Nora Casson Jan 2022

Future Of Winter In Northeastern North America: Climate Indicators Portray Warming And Snow Loss That Will Impact Ecosystems And Communities, Elizabeth Burakowski, Alix Contosta, Danielle Grogan, Sarah Nelson, Sarah Garlick, Nora Casson

Faculty Publications

Winters in northeastern North America have warmed faster than summers, with impacts on ecosystems and society. Global climate models (GCMs) indicate that winters will continue to warm and lose snow in the future, but uncertainty remains regarding the magnitude of warming. Here, we project future trends in winter indicators under lower and higher climate-warming scenarios based on emission levels across northeastern North America at a fine spatial scale (1/16°) relevant to climate-related decision making. Under both climate scenarios, winters continue to warm with coincident increases in days above freezing, decreases in days with snow cover, and fewer nights below freezing. …

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Editorial: Geospace Observation Of Natural Hazards, Dimitar Ouzounov, Jann-Yenq Liu, Patrick T. Taylor, Katsumi Hattori Jan 2022

Editorial: Geospace Observation Of Natural Hazards, Dimitar Ouzounov, Jann-Yenq Liu, Patrick T. Taylor, Katsumi Hattori

Mathematics, Physics, and Computer Science Faculty Articles and Research

"This collection of technical papers aims to bring recent data from many sources into the study of natural hazards. They represent a multi-instrumental approach using both ground observations: Global Navigation Satellite System (GNSS); and Low Earth Orbiting Electromagnetic (LEO EM) satellites missions together with Earth Observations (EO), which could reveal new information. Results from latest satellite missions, [(NPP/NASA/NOAA(US), CENTINEL, Swarm/ESA (EU), HIMAWARI (JMA, Japan), FORMOSAT-5 (Taiwan, August 2017), CSES1 (China/Italy, Feb 2018), and FORMOSAT-7/COSMIC-2 (Taiwan/United States, May 2019)], are represented in this volume."

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Farmers’ Perceptions On Different Forage Types In Southern Highlands Of Tanzania, B. Nzogela, S. W. Mwendia, A. J. Mwilawa, J. Kizima, J. Bwire, A. O. Notenbaert Jan 2022

Farmers’ Perceptions On Different Forage Types In Southern Highlands Of Tanzania, B. Nzogela, S. W. Mwendia, A. J. Mwilawa, J. Kizima, J. Bwire, A. O. Notenbaert

IGC Proceedings (1977-2023)

Feed and forages take the bulk of inputs required in livestock production. Inadequate forages in quality and quantity in sub-Saharan Africa is responsible for low livestock productivity. Addressing livestock feed requirements presents quick wins in livestock productivity compared to breeding and health. In a Climate Smart Dairy project implemented in Tanzania, we demontrated several forage options to farmers including, two cultivars of Pennisetum purpureum, two Urochloa hybrids, Chrloris gayana and Tripsacum andersonii (control). Where applicable, the grasses were intercropped with either one of the following forage legume, Desmodium intortum, Lablab purpureus or Stylosanthes guiyanensis. Fourteen forage treaments …

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Examining The Impact Of Patch Burning On Livestock Grazing Patterns In Edwards Plateau, Texas, W. G. Gao, J. P. A. Angerer, X. B. W. Wu, D. T. Tolleson Jan 2022

Examining The Impact Of Patch Burning On Livestock Grazing Patterns In Edwards Plateau, Texas, W. G. Gao, J. P. A. Angerer, X. B. W. Wu, D. T. Tolleson

IGC Proceedings (1977-2023)

Production of sheep, goat, and cattle are major agricultural enterprises on West Texas rangelands, especially in the Edwards Plateau. In this region, the use of fire as a management tool was suppressed until recently. Although previous studies have been conducted to evaluate cattle use of burned versus unburned patches, there has been a lack of studies where combinations of livestock species grazing together on patch burned areas have been evaluated. The objective of this study is to examine grazing patterns of cattle, sheep and goats, both spatially and temporally, on areas where patch burning has been implemented. The study site …

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Evaluation Of Morphogenesis And Yield Of Three Pennisetum Purpureum Varieties In South-West, Nigeria, Victoria O. A. Ojo, T. A. Adeyemi, D. K. Oyaniran, G. A. Akinade, Olufemi S. Onifade Jan 2022

Evaluation Of Morphogenesis And Yield Of Three Pennisetum Purpureum Varieties In South-West, Nigeria, Victoria O. A. Ojo, T. A. Adeyemi, D. K. Oyaniran, G. A. Akinade, Olufemi S. Onifade

IGC Proceedings (1977-2023)

This experiment, conducted at the Federal University of Agriculture, Abeokuta, Nigeria evaluated the morphogenesis of three varieties of Pennisetum purpureum used in this study, which were the local, purple, and FI variety at different stages of growth. The plants were established through vegetative plant parts (stems) sourced from a previously established plot and planted using 1 m × 1 m spacing on plots measuring 4 m × 5 m. The plants were fertilized with split doses of poultry manure at 4 t/ha (equivalent to 120 kg N/ha). The experiment was laid out as a Randomized Complete Block Design. Data on …

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Effects Of Stages Of Growth On Dry Matter Yield And Nutrient Composition Of Red Clover In The Year Of Establishment In Jos, Plateau State, Nigeria, T. T. Akpensuen, J. T. Amodu, O. A. T. Namo, R. J. Tanko Jan 2022

Effects Of Stages Of Growth On Dry Matter Yield And Nutrient Composition Of Red Clover In The Year Of Establishment In Jos, Plateau State, Nigeria, T. T. Akpensuen, J. T. Amodu, O. A. T. Namo, R. J. Tanko

IGC Proceedings (1977-2023)

An experiment was conducted in Jos, Nigeria to evaluate the effects of stages of growth on dry matter yield and nutrient composition of Red clover (Trifolium pratense var. AberClaret) in the year of establishment. The treatments were five (5) stages of growth (5, 9, 13, 17 and 21) weeks after sowing (WAS). The five stages of growth were replicated five times in a Latin Square Design. The land was divided into twenty five plots of 3 m X 3 m each. The spacing between each plot was 1m along the rows and columns. Growth components and DM yield were …

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Effects Of Maturity And Drying Method On The Nutritive Value Of Tropical Grasses In Nicaragua, Rocky Lemus, R. Van Der Hoek, Y. C. Newman, M. Mena, K. A. Albrecht Jan 2022

Effects Of Maturity And Drying Method On The Nutritive Value Of Tropical Grasses In Nicaragua, Rocky Lemus, R. Van Der Hoek, Y. C. Newman, M. Mena, K. A. Albrecht

IGC Proceedings (1977-2023)

Tropical grasses are key components for both grazing and conserved forages in sustainable livestock systems (beef and dairy) in Central America. The objective of the study was to evaluate grasses used in Nicaragua and their nutritive value contribution as preserved forage during the dry season under different drying methods. Five tropical bunch grasses (Andropogon gayanus, Hyparrheniarufa, Urochloabrizantha, Megathyrsus maximus, and Cenchruspurpureus) were sampled across different farms in Nicaragua in 2014 and 2015 using three replications. Forage samples were collected at 2, 4, 6, and 8-wk maturity as well as season long samples. Samples drying …

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Effects Of Harvest Frequency On Yield And Self-Thinning In Irrigated Orchardgrass (Dactylis Glomerata L.) In Oregon, Usa, G. Jones Jan 2022

Effects Of Harvest Frequency On Yield And Self-Thinning In Irrigated Orchardgrass (Dactylis Glomerata L.) In Oregon, Usa, G. Jones

IGC Proceedings (1977-2023)

Persistence is an important factor in the economic management of perennial grass swards. Frequent harvest is occasionally attributed to poor stand persistence, but self-thinning theory indicates that infrequent harvest should cause swards to thin as tillers compete for light. This experiment aimed to demonstrate and qualify self-thinning in orchardgrass managed under differing harvest frequencies. Orchardgrass was planted in September 2018 and then clipped, fertilized and divided into experimental units in March 2019. Plots were randomly assigned one of four harvest frequency treatments (n = 5): No harvest, one harvest, two harvests, and four harvests. Irrigation water and fertilizer were …

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State And Transition Models In Space And Time – Using Stms To Understand Broad Patterns Of Ecosystem Change In Iceland, I. C. Barrio, D. S. Hik, T. A. Mulloy, J. Thorsson, K. Svavarsdóttir, B. Marteinsdóttir, I. S. Jónsdóttir Jan 2022

State And Transition Models In Space And Time – Using Stms To Understand Broad Patterns Of Ecosystem Change In Iceland, I. C. Barrio, D. S. Hik, T. A. Mulloy, J. Thorsson, K. Svavarsdóttir, B. Marteinsdóttir, I. S. Jónsdóttir

IGC Proceedings (1977-2023)

Managing ecological systems sustainably requires a deep understanding of ecosystem structure and the processes driving their dynamics. Conceptual models can lead to improved management, by providing a framework for organizing knowledge about a system and identifying the causal agents of change. We developed state-and-transition models (STMs) to describe landscape changes in Iceland over three historical periods with different human influence, from pre-settlement to present days. Our models identified the set of possible states, transitions and thresholds in these ecosystems and their changes over time. To illustrate the use of these models for predicting and improving management interventions, we applied our …

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Soil Water Movement In A Watershed In The Chilean Patagonia, J. Ivelic-Sáez, P. Cisternas, J. Dörner, J. Arumí, J. Valenzuela, E. Muñoz, S. Valle, H. Alonso, R. López, H. Uribe Jan 2022

Soil Water Movement In A Watershed In The Chilean Patagonia, J. Ivelic-Sáez, P. Cisternas, J. Dörner, J. Arumí, J. Valenzuela, E. Muñoz, S. Valle, H. Alonso, R. López, H. Uribe

IGC Proceedings (1977-2023)

Magallanes region, located southern Chile, contains about 1.9 million sheep heads, in about 5 million hectares of rangelands. However, forage production is concentrated in small wetlands meadows called locally “Vegas” that only represent about 300.000 hectares. Those ecosystems that sustain patagonian ranches, produce 20 times more forage biomass than the surrounding natural rangelands. Patagonian vegas have concave topography with a hydrophyte (wet) center, and mesic slopes and xeric highlands of Festuca gracillima. Although the moisture content is controled by topography, there is scarce information about the movement of water through this concave topography. Also, the spatial variability of the …

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Simple Guidelines For Deciding When Soil Variability Does – And Doesn’T – Matter For Rangeland Management And Restoration, Jeff E. Herrick, J. Maynard, B. Bestelmeyer, A. Ganguli, J. Glover, K. Johnson, D. Kimiti, J. Neff, G. Peacock, J. Peters, S. Salley, P. Shaver, K. Shepherd, Z. Stewart, R. Van Den Bosch Jan 2022

Simple Guidelines For Deciding When Soil Variability Does – And Doesn’T – Matter For Rangeland Management And Restoration, Jeff E. Herrick, J. Maynard, B. Bestelmeyer, A. Ganguli, J. Glover, K. Johnson, D. Kimiti, J. Neff, G. Peacock, J. Peters, S. Salley, P. Shaver, K. Shepherd, Z. Stewart, R. Van Den Bosch

IGC Proceedings (1977-2023)

“Rangelands in most parts of the world are relatively homogenous and can be managed uniformly at the landscape scale” or “rangelands are extremely diverse and require different approaches even at the landscape scale.” Both statements are made frequently by rangelands scientists and managers. Both are correct. Whether or not it is worthwhile to consider soil variability when planning management and restoration at the landscape scale depends on objectives, location, and the management or restoration strategies under consideration. Together these factors determine whether outcomes are likely to be different at different locations in the landscape, and whether those outcomes can be …

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Effects Of Banana Peels On Chicken Weight Gain And Egg Production In The Urban And Peri-Urban Areas Of Aksum City, Ethiopia, H. G. Araya, S. G. Gebrekristos, W. V. Oliver Jan 2022

Effects Of Banana Peels On Chicken Weight Gain And Egg Production In The Urban And Peri-Urban Areas Of Aksum City, Ethiopia, H. G. Araya, S. G. Gebrekristos, W. V. Oliver

IGC Proceedings (1977-2023)

High feed cost of running urban-animal-agriculture and huge city wastes are challenges of the growing towns in modern Ethiopia. Egg production microenterprise is steadily growing due to its low initial investment and ready market in urban and peri-urban areas. However, cost of egg production is high due to the rising cost of corn, the main feed ingredient in poultry rations. Using banana peels, which forms a great proportion of city waste in Ethiopia, is seen as a way of not only reducing the waste, but also as an alternative low-cost feed supplement that could help enhance egg production by small-holder …

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Sheep Grazing Patterns For Better Land Management: Adjusting Gps Tracking Protocol, J. Castro, L. M. Godoy, J. P. Castro, M. Castro Jan 2022

Sheep Grazing Patterns For Better Land Management: Adjusting Gps Tracking Protocol, J. Castro, L. M. Godoy, J. P. Castro, M. Castro

IGC Proceedings (1977-2023)

Small ruminant livestock systems in northeast Portugal are an extensive activity based on daily grazing paths across the landscape. The flocks use multiple patches of multiple land cover types in different ways throughout the year. Shepherd and flock interactions determine the resting and feeding spots utilized by sheep and goats according to the biotic and abiotic conditions. Information about the herding home range is central to managing the land use and vegetation cover and optimizing sheep and goats' productivity in traditional systems. This study's main objective is to contribute to calibrate a shepherding GPS protocol to monitor sheep flocks based …

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Restoring Rangelands For Nutrition And Health For Humans And Livestock, I. Öborn, A. Bargués Tobella, G. Bostedt, A. Hörnell, P. Knutsson, K. Lindvall, D. Mpairwe, S. Mureithi, G. Nyberg, Y. Nyberg, B. Schumann, A. Turinawe, T. Vågen, D. Wakjira, L. Winowiecki, E. Wredle Jan 2022

Restoring Rangelands For Nutrition And Health For Humans And Livestock, I. Öborn, A. Bargués Tobella, G. Bostedt, A. Hörnell, P. Knutsson, K. Lindvall, D. Mpairwe, S. Mureithi, G. Nyberg, Y. Nyberg, B. Schumann, A. Turinawe, T. Vågen, D. Wakjira, L. Winowiecki, E. Wredle

IGC Proceedings (1977-2023)

Drylands cover 40% of the global land area and host 2 billion people, of which 90% live in low- or middleincome countries. Drylands often face severe land degradation, low agricultural productivity, rapid population growth, widespread poverty, and poor health. Governance structures and institutions are often eroded. Livestock-based livelihoods, largely depending on seasonal migration are common. Pastoralist communities and their land are highly vulnerable to climate shocks, while there are also changes in land tenure, insecurity/conflicts and rapid infrastructure development. Drylands Transform is an interdisciplinary research project revolving around the UN Sustainable Development Goals (SDGs). The project aim is to contribute …

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Role Of Different Shrubs In Soil Seed Bank Conservation In Different Climates Of Iran, Reza Erfanzadeh, Fatemeh Barzegaran, Shadi Hazhir, Sirus Saber Amoli Jan 2022

Role Of Different Shrubs In Soil Seed Bank Conservation In Different Climates Of Iran, Reza Erfanzadeh, Fatemeh Barzegaran, Shadi Hazhir, Sirus Saber Amoli

IGC Proceedings (1977-2023)

Shrubs often produce positive effects on understory soil seed bank (SSB) characteristics. However, the effect of shrubs on SSB could be variable in different habitats depending on the climate and the type of shrub. In this study, the effect of Crataegus pseudomelanicarpa (humid areas, northern Iran), Onobrychis cornuta, Berberis integerrima and Juniperus sabina (sub alpine areas, northern Iran) and, Astragalus myriacanthus and Acantholimon spinosum (semi-arid areas, central Iran) on SSB characteristics was studied. Soil samples were collected under the canopy of shrubs and the control (out of canopies) from 0-5 cm and 5-10 cm depths by auger and seed germination …

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Range Condition Classification Based On Quantitative Characteristics Of Vegetation, Nafiseh Fakhar, Mansour Mesdaghi, Kamal Naseri Jan 2022

Range Condition Classification Based On Quantitative Characteristics Of Vegetation, Nafiseh Fakhar, Mansour Mesdaghi, Kamal Naseri

IGC Proceedings (1977-2023)

Change in range condition classes over time are usually the basis for monitoring management effectiveness. Several approaches have been proposed to monitor the range condition classes in relation to a bench mark usually called climax stage. There are some types of range condition classification often included in a range inventory. In this paper, six factors of canopy cover, litter frequency, plant vigour, soil protection percentage, plant composition, and present production as a percentage of indicative state were described for determination range conditions. We have determined range condition classes by using R software. This method was developed by FAO projects in …

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Effect Of Seeding Rates On Productivity And Quality Of Alfalfa In Northern Area Of Korea, Jong Geun Kim, C. Liu, S. N. Wei, Y. F. Li, E. C. Jeong, H. J. Kim Jan 2022

Effect Of Seeding Rates On Productivity And Quality Of Alfalfa In Northern Area Of Korea, Jong Geun Kim, C. Liu, S. N. Wei, Y. F. Li, E. C. Jeong, H. J. Kim

IGC Proceedings (1977-2023)

Alfalfa cultivation in South Korea is not common. There are many reasons, but low productivity has been extremely limited. Although alfalfa growth was poor due to boron deficiency in the soil, the problem has recently been solved. Nevertheless, the cultivation of alfalfa is not expanding. About 200,000 tonnes of alfalfa hay are imported every year. Therefore, this study was conducted to find a way to replace imported hay by expanding alfalfa cultivation in Korea. Alfalfa (P5444) was sown in northern part of South Korea (Pyeongchang). Alfalfa was sown in September 2018 with different seeding rates (20, 30 and 40 kg/ha) …

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Effect Of Prompt-Delayed Packaging And Ensiling Time On Fermentation And Aerobic Stability Of Soybean Curd Residue, Ajmal Wali, Takeshi Tsuruta, Naoki Nishino Jan 2022

Effect Of Prompt-Delayed Packaging And Ensiling Time On Fermentation And Aerobic Stability Of Soybean Curd Residue, Ajmal Wali, Takeshi Tsuruta, Naoki Nishino

IGC Proceedings (1977-2023)

Wet soybean curd residue (SCR) obtained from two tofu factories (F1 and F2) was anaerobically stored with or without added beet pulp (BP). Sealing was performed on the day of tofu production (prompt sealing [PS]) or 2 days after SCR was piled and unprocessed (delayed sealing [DS]). Predominant lactic acid fermentation was observed regardless of the sealing time and BP addition. Acinetobacter spp. were the most abundant (> 67%) bacteria in pre-ensiled SCR, regardless of the factory and sealing time. In PS silage, the abundances of typical lactic acid-producing bacteria, such as Lactobacillus, Pediococcus, and Streptococcus spp. reached …

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Effect Of Native Grassland Intensification Over Cattle Performance, N. Caram, F. Casalás, M. Cadenazzi, R. Zanoniani, P. Boggiano Jan 2022

Effect Of Native Grassland Intensification Over Cattle Performance, N. Caram, F. Casalás, M. Cadenazzi, R. Zanoniani, P. Boggiano

IGC Proceedings (1977-2023)

The objective was to evaluate the effect of different levels of intensification in native grassland over cattle live weight gain (LWG), stocking rate (SR) and average daily gain (ADG) in Uruguay. The study was carried out in 7.8 ha in Paysandú, between winter 2015 and autumn 2019. Experiment was a randomized complete block design, with 4 replicates. The four treatments applied were native grassland (NG), NG overseeded with Trifolium pratense (6 kg.ha-1) and Lotus tenuis (6 kg.ha-1) + 40 kg.ha-1 of P2O5 (NGO), NG fertilized with 60 kg.ha-1 of N + …

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Relationship Between Exchangeable Acidity And Persistence Of Orchardgrass (Dactylis Glomerata) In Temperate Pastures Under Different Management, H. Kakihara, S. Ogura Jan 2022

Relationship Between Exchangeable Acidity And Persistence Of Orchardgrass (Dactylis Glomerata) In Temperate Pastures Under Different Management, H. Kakihara, S. Ogura

IGC Proceedings (1977-2023)

Orchardgrass is a high productive, highly nutritive grass, but its persistence is low under acid soil condition. Therefore, to obtain the information on the effect of soil acidity on the persistence of orchardgrass in acid soil grasslands, we investigated the relationship between exchangeable acidity (y1) and orchardgrass in sown pastures. Eight temperate pastures (four cutting meadows [CMs] and four cattle grazing pastures [GPs]) were used for vegetation survey and soil samplings. Six or three line transects (50 m each) were fixed in each meadow or pasture, and measurement location (three quadrats 20 cm×20 cm in size and 50 …

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Productivity Of Grasslands In Wielkopolska In Conditions Of Weather Variables Changes In The Last 34 Years, B. Golińska, M. Czerwiński, P. Goliński Jan 2022

Productivity Of Grasslands In Wielkopolska In Conditions Of Weather Variables Changes In The Last 34 Years, B. Golińska, M. Czerwiński, P. Goliński

IGC Proceedings (1977-2023)

The purpose of this study was the assessment of the effect of climatic changes since 1985 on the productivity of grasslands in Wielkopolska region (Poland). The weather data (precipitation sum, mean, maximum and minimum air temperature, insolation, relative air humidity and wind speed) were collected from 1985 to 2018 at five weather stations located in the region that belong to the Institute of Meteorology and Water Management. Using this data, trends of Standardized Precipitation Evapotranspiration Index (SPEI) were determined. Grassland productivity was estimated from data collected by the Central Statistical Office, that refer to meadow hay production for each commune …

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The Diversity Of Poisonous Plant Patches In The Arid Rangelands Of Namaqualand, South Africa, T. Jamalie, M. I. Samuels, C. F. Cupido, F. L. Müller, W. L. Engelbrecht, T. Dube, R. S. Knight Jan 2022

The Diversity Of Poisonous Plant Patches In The Arid Rangelands Of Namaqualand, South Africa, T. Jamalie, M. I. Samuels, C. F. Cupido, F. L. Müller, W. L. Engelbrecht, T. Dube, R. S. Knight

IGC Proceedings (1977-2023)

The Namaqualand region in South Africa is part of the richest arid biodiversity hotspot in the world. Plant distribution and diversity here are impacted by various biophysical and anthropogenic factors. In these landscapes, poisonous plant patches, which pose serious threats to livestock, are widespread but their contribution to the regions biodiversity are not fully understood. This study assessed their plant diversity and compared its matrix. This study was conducted in the semi-arid to arid Steinkopf pastoral area located in Namaqualand where livestock is still herded daily. Twenty-five paired sites were selected based on the dominance of poisonous plants within the …

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