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The Functionality Of Legume-Grass Swards In A Long-Term Pasture: Productivity And Stability, Žydrė Kadžiulienė, Lina Šarūnaitė, Leonas Kadžiulis

IGC Proceedings (1977-2023)

Combinations of various plant species or functional groups can enhance sward structure, the function and stability of an ecosystem, supplement forage production and mitigate negative environmental impacts. Climatic variation, rising temperatures, changing precipitation and other extreme climatic events may lead to changes in plant diversity (Soussana and Lüscher 2007). At the same time it is very important to optimise functional diversity by combining species with different properties that are well adapted to the local environments (Huyghe et al. 2012). Successful selection and management of legumes influences the herbage production, nutritional quality and sustainability of grazing systems. Therefore, their role …

Mixed Species Seeding: A Means To Increase Production In Temperate Pastures, Michael P. Schellenberg, Bili Biligetu, Valentin Picasso

IGC Proceedings (1977-2023)

Seeding mixed species for forage production has been suggested as a means of increasing productivity and stabilizing yields under a changing climate. Forages have traditionally been sown as monocultures or binary mixtures only, with the emphasis being on species and not necessarily their function or compatibility. While natural plant communities typically may be dominated by a single species, they are comprised of several species and function-al groups.

This paper provides the results of sowing multiple species at semiarid sites within the North American Great Plains and identifies a similar result from a more humid region reported within the literature.

Experimental Trials And Simulation Modelling Indicate That Summer-Growing Perennial Grasses Are A Potential New Feed Source In The Mallee Region Of Southern Australia, Katrien Descheemaeker, Rick Llewellyn, Andrew D. Moore, Anthony Whitbread

IGC Proceedings (1977-2023)

In the Mallee region of southern Australia, the dry and variable climate results in frequent summer-autumn feed gaps, restricting the profitability of farms that combine livestock and crop enterprises. To assess the suitability of summer-growing perennial grasses to fill these feed gaps, 2 replicated field trials with different cultivars were conducted. The data also served to validate a C4 grass model, which was then used in a simulation experiment comparing 2 different soil types and 3 locations. Most grass cultivars established well except on sandy, non-wetting soils. Four out of 5 cultivars persisted over 6 years, producing 1000 – 9000 …

The Production Potential Of Kikuyu (Pennisetum Clandestinum) Over-Sown With Ryegrass (Lolium Spp.) In A No-Till System, Janke Van Der Colf, Philip R. Botha, Robin Meeske, Wayne F. Truter

IGC Proceedings (1977-2023)

Pastures for milk production in the southern Cape of South Africa are based on no-till systems where kikuyu (Pennisetum clandestinum) is over-sown with ryegrass during autumn to improve seasonal pasture production and forage quality. The aim of the study was to quantify the pasture and milk production potential of kikuyu over-sown with Italian ryegrass (Lolium multiflorum var. italicum), Westerwolds ryegrass (L. multiflorum var. westerwoldicum) or perennial ryegrass (L. perenne). The study was conducted for 2 years on existing kikuyu pastures grazed by Jersey cows. Growth rate, dry matter (DM) production, botanical composition, …

Designing High-Yielding, High-Diversity And Low-Input Temporary Grasslands, Karen Søegaard, Tine B. Mortensen, Jørgen Eriksen

IGC Proceedings (1977-2023)

Species-rich swards have received increasing interest due to their focus on ecosystem services, animal welfare and product quality. However, in high-yielding swards the proportion of herbs is often limited and there is little knowledge of their management. Seed mixture composition, cutting frequency, fertilization and grazing/cutting strategies were examined over 4 years in 3 experiments to quantify their effects on herbage yield and botanical composition. Inclusion of herbs in the sward gave similar or higher annual yields but swards established with 100% herbs depended on the presence of a driver species. The effects of management differed between species. Herb content in …

Feeding Patterns And Milk Production Of Small-Scale Dairy Farmers Under Semi-Intensive And Extensive Cattle Management Systems In Sri Lanka, Sujatha Premaratne, Sharini Carol Somasiri, Chandrasiri Premalal, Vajira P. Jayawardene, A. R. S. Senavirathne

IGC Proceedings (1977-2023)

The main objective of the present study was to determine the feeding pattern and milk production of small-scale dairy farmers under semi-intensive and extensive management systems in the intermediate zone of Sri Lanka. This region is sandwiched between the Wet and Dry Zones, receives a mean annual rainfall of 1750-2500 mm, and covers an area of about 1.2 million ha. A survey was conducted with 60 farmers and data on their herd size, herd composition and breeds, management system, breeding method, milk production, feeding costs and returns of raising animals were collected. The results indicated that the majority of farmers …

Management Options That Increase Herbage Production In Grassland-Based Livestock Production Systems, Masahiko Hirata, Manabu Tobisa, Sachiko Idota

IGC Proceedings (1977-2023)

Herbage production is the most important measure of performance of grassland systems. Understanding how herbage production responds to various managements is crucial to the success of grassland systems, whether or not maximization of production is pursued. Most of the records of grassland production in the literature are taken as acceptable approximations of net herbage production. Analysis of these production records and accompanying quality data can generalize the response of grassland productivity and quality to individual managements, and can characterize the managements in terms of their efficiency and potential in increasing productivity and quality. Overall, maximum production response is ranked irrigation …

Evaluation Of A Drought Tolerance Native Grass: Cleistogenes Songorica For The Turf Use Purpose, Xinyong Li, Xue Wei, Yanrong Wang

IGC Proceedings (1977-2023)

Water deficit is one of the most important factors to restrict growth of turf grass, especially in northwest China where water available for landscape irrigation is increasingly limited. Use of drought-tolerant turfgrass species or cultivars is one of the strategies used to reduce water utilization and irrigation requirement (Nielsen and Stewart 1990). Recent study showed that regionally adapted native grass species are worth investigating as suitable alternatives to the conventional turfgrasses in many applications (Mark et al. 2011), and several native grass species are suitable for low-maintenance turfgrass use has also been reported (Mintenko et al. 2002). Awnless …

Response Of Selected Cultivars Of Sheep Fescue To Management Strategy In Extensive Lawn Utilization, Barbara Golińska, Piotr Goliński

IGC Proceedings (1977-2023)

Sheep fescue (Festuca ovina L. sensu lato) is distinguished for its ability to form sods on difficult sites (Dernoeden et al. 1994). This species is a persistent bunch grass that mixes well with wildflowers, without dominating them. For this reason sheep fescue can play an important role in the creation of landscape lawns. In the adaptation of this grass to extremely difficult sites, specific biological features of this grass are very important, especially water efficiency, drought tolerance, and low fertilizer requirements (Aronson et al. 1987; Brar and Palazzo, 1995).

The aim of this work was to …

Effects Of Three Media Cultures On Quantitative And Qualitative Characteristics In Two Turf Grass Genera For Sod Production, Abdolrahman Rahimian Booger, Hassan Salehi, Saeed Reza Gharechahi

IGC Proceedings (1977-2023)

Agricultural environments can be described by several different variables that include soil chemical, physical, and biological data (Mele and Crowley, 2008). Soil structure provides the essential framework which maintains the basic production at farming systems (Smith and Powlson, 2003). Soil responses vary for a number of reasons, such as variability in initial ecosystem conditions, diversity in agricultural methods, variability in the mix of crops and cropping intensity, and environmental sensitivity to alteration (varying resistance and resilience) (Homburg and Sandor, 2011).

Application of compost in turf grass soils can affect dissolved organic C (DOC) levels which affects nutrient dynamics in soil …

AvanexTm Unique Endophyte Technology--Bird Deterrent Endophytic Grass For Amenity Turf And Airports, Christopher G. L. Pennell, M. Philip Rolston

IGC Proceedings (1977-2023)

Bird strike is recognised throughout the civil and military aviation industries as a significant cost with more than $US 2 billion/year attributed to this problem globally. To manage this risk the aviation industries have in the past adopted many practices to frighten wildlife from airports rather than reducing the attractiveness of the area by grass habitat management. There has been little proven research on ground cover species evaluation using fungal endophyte to reduce wildlife. Our research has shown that the adoption of a specialist Neotyphodium fungal endophyte (strain AR601) placed in a turf type tall fescue cv. Jackal (Festuca …

Inputs For Turfgrass Managers And Sod Growers: Marketing Vs. Science-Based Information With Emphasis On Australian Experience, Donald S. Loch

IGC Proceedings (1977-2023)

Industry structure and supporting resources are discussed in relation to information on plant nutritional and biostimulant products and concepts. Critical commentary is provided on examples of such products and services before considering ways in which decision-making by turf managers and sod growers can be improved in the future.

Farmer Based Seed Production Of Leucaena Leucocephala In Eastern Indonesia, Jacob Nulik, Debora Kana Hau, Resti G. Edison, Charles Pakaereng, Dessy Liubana, Putri Ara, H. Max Shelton

IGC Proceedings (1977-2023)

Leucaena leucocephala cv. Tarramba was first introduced to Indonesia in 2001 as an activity of ACIAR Project AS2/2000/157. It has now become the most popular variety used by agencies promoting the use of leucaena for ruminant feeding in Eastern Indonesia (Nulik et al. 2004). The greater adaptability and higher production of Tarramba, even in the dry season, its erect growth habit as well as its tolerance of the psyllid insect (Heteropsylla cubana) compared to the ubiquitous ‘common’ leucaena, has been frequently observed (Nulik et al. 2004).

The cultivar has attracted much interest from farmers and other …

Effects Of Fertilizer Applications On Seed Yield And Quality Of Elymus Sibiricus In A Rain-Fed Condition, Qingfeng Li, Xiao He, Guihua Shi

IGC Proceedings (1977-2023)

Siberian wildrye grass (Elymus sibiricus L.) is widely used for reseeding as part of grassland improvement programs in Inner Mongolia. Shortage of seed supply has been a problem that limits wider use of E. sibiricus in Northern China steppes. In this research, we investigate the effects of fertilizer application on the seed yield and seed quality of E. sibiricus grown under rain-fed conditions in Inner Mongolia.

The Effect Of Sulfuric Acid Treatment On Hard Seeds Of Melilotoides Ruthenica, Zhaolan Wang, Jiancai Du, Lili Zhao, Qingfeng Li, Weibo Ren, Fengling Shi

IGC Proceedings (1977-2023)

Melilotoides ruthenica is a perennial legume, and is characterized by cold resistence, drought resistence and high protein content (Luo 1993). It is used for hay and as a pasture plant, but because a high percentage of the seed are hard-seeded to allow reliable germination, seedling production is hindered (Du et al. 2007).

The objective of this research was to study the effect of sulfuric acid treatment on hard-seeds of M. ruthenica and determine the optimal treatment concentration and treatment time.

Combinational Dormancy Of Vicia Angustifolia Seed And Its Ecological Significance, Rui Zhang, Tingshan Li, Xiaowen Hu, Yanrong Wang

IGC Proceedings (1977-2023)

Combinational dormancy is a common phenomenon in seed of temperate legume species, however, less is known about its ecological role in an alpine environment (Hu et al. 2013). Vicia angustifolia is an annual herbaceous legume, widely distributed in the Qinghai-Tibet Plateau. The purpose of this study is to explore the seed dormancy characteristics of V. angustifolia and its ecological significance.

Traditional Syllabus Template Guidelines, Southwestern Oklahoma State University

HLC Assurance Argument Evidence

CETL provides support through this document to help faculty develop a traditional syllabus from the template. CETL also has two Teaching and Learning Coordinators who can help with the syllabus development.

Recent Disruptions In The Timing And Intensity Of Precipitation In Calakmul, Mexico, Sofia Mardero, Birgit Schmook, Zachary Christman, Sarah E. Metcalfe, Betsabé De La Barreda-Bautista

School of Earth & Environment Departmental Research

This study addresses changes in the timing and intensity of precipitation from 1982 to 2016 from three meteorological stations around Calakmul, Mexico, a landscape balancing biodiversity conservation and smallholder agricultural production. Five methods were used to assess changes in precipitation: the Mann-Kendall test of annual and wet season trends; a fuzzy-logic approach to determine the onset of the rainy season; the Gini Index and Precipitation Concentration Index (PCI) to evaluate the temporal distribution of precipitation; Simple Precipitation Intensity Index (SDII) to evaluate precipitation intensity; and the Rainfall Anomaly Index (RAI) to identify the deficit or surplus of rainfall compared with …

Modeling And Experimental Verification Of Freeze Concentration (And Freeze Desalination) Progress Based On Characterizing The Volumetric Increment Of Materials, Ding Zhongxiang, Qinfrankg F, Yuan Jiaojiao, Jiang Runhua, Huang Simin, Shao Youyuan

Food and Machinery

A mathematical model was established to characterize the freeze concentration process based on the volume increase of materials, which was correlated with the crystallinity of the solution. The relationship between the height of liquid column and the solute concentration was measured on a multi-pass freeze concentrator. The results were compared with the model prediction and were used for model modification and the goodness of fit was high. The crystallization rate error was within 5%.

Reconstruction Of Surface 3d Model Of Brown Rice Based On Point Cloud Data, Wu Jing, Tang Xiaohua, Yang Siping, An Jiaqiang, Li Tianjiao, Yang Jinshan

Food and Machinery

In view of the morphological and structural characteristics of brown rice, use the non-contact laser scanning technology to acquire original point cloud on brown rice surface in the multi-section circular scanning way. The Poisson reconstruction algorithm is used to reconstruct the smoothed point cloud with normal information to obtain the ideal three-dimensional model of brown rice surface. The results show that the reconstructed brown rice model has smooth surface, clear outline, and obvious details such as rice ditch and germ, which can provide an effective digital model for the later improvement of rice processing technology.

Effect Of Thickness On Moisture Transfer During Far-Infrared Drying Of Dioscorea Opposite, Zhou Siqing, Duan Xu, Ren Guangyue, Zhang Meng, Ma Li, Che Xinzi

Food and Machinery

The water diffusion characteristics of drying dioscorea opposite during by far infrared were investigate. The dehydration of Dioscorea opposite by Far-infrared drying equipment. The technology of low field nuclear magnetic resonance (LF-NMR) and magnetic resonance imaging (MRI) were applied to measured moisture content of D. opposite during drying. Comprehensive consideration results of LF-NMR, MRI, drying curve and drying rate. Water diffusion characteristics of D. opposite with different slice thickness (4, 8, and 12 mm) during drying were analyzed, and the thin-layer drying were modeled. The results showed that the drying rate shortly and rapidly increased and then gradually decreased. The …

Morphology Controlled Preparations And Electrochemical Properties Of Znco2O4 Electrode Materials For Supercapacitors, Yue-Shen Zhou, Meng Li, Shuang Wu, Zhao-Lei Li, Yan-Min Gao

Journal of Electrochemistry

In this work, hydrothermal reaction and high temperature were used to grow ZnCo₂O₄ active materials on Ni foam. The crystal stuctures and surface morphlogies of four samples were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The electrochemical performances were characterized by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) testing and electrochemical impedance spectroscopy (EIS) on an electrochemical station. It can be seen that active materials tended to form denser stuctures with an increasing amount of NH₄F in the solution system and four different morphologies of ZnCo_{2 …}

Electrochemical Preparation And Photocatalytic Performance Of Lanio3/Tio2 Nanotube Arrays, Cheng Gong, Ze-Yang Zhang, Si-Wan Xiang, Lan Sun, Chen-Qing Ye, Chang-Jian Lin

Journal of Electrochemistry

The LaNiO₃/TiO₂ nanotube arrays were prepared by pulse electrodeposition combined with high temperature annealing. The LaNiO₃ nanoparticles modified on the TiO₂ nanotube arrays had small particle size (< 10 nm), uniform distribution and controllable loading. Some LaNiO₃ nanoparticles were deposited inside the TiO₂ nanotubes. The UV-visible absorption spectra displayed that the absorption band edge of LaNiO₃/TiO₂ nanotube arrays was obviously red-shifted as compared with that of TiO₂ nanotube arrays, and the visible light absorption was enhanced significantly. The photocatalytic degradation results of rhodamine B (RhB) under visible light showed that the LaNiO₃/TiO₂ nanotube arrays prepared …

Electrochemical Determination Of Trace Copper Ions In Drinking Water Source, Jing-Ji Peng, Hong Zheng, Yi-Song Zou, Guo-Kun Liu, Dong-Xing Yuan

Journal of Electrochemistry

Aiming at the on-site and quick safety evaluation of the dissolved trace copper ions (Cu²⁺) in drinking water source, an electrochemical detection platform was developed on the basis of the square wave anodic stripping voltammetry using the gold nanoparticles (Au NPs) modified glassy carbon electrode, where Au NPs were deposited via electrochemical cyclic voltammetry. The proposed method displayed the limit of detection as low as 1.3 μg·L^-1 in the linear range of 2 ~ 50 μg·L^-1. The proposed method was applied to the determination of Cu²⁺ in the midstream of Minjiang River, one of …

Electrochemical Behaviors Of Azopurine On Gold Electrodes, Ming-Xue Li, Hang Shi, Jia Liu, Meng Zhang, Jian-Zhang Zhou, De-Yin Wu, Zhong-Qun Tian

Journal of Electrochemistry

In this paper, we studied the electrochemical behaviors of azopurine on polished gold electrodes with cyclic voltammetry (CV). On the basis of analyzing scan rate and peak current, it was supposed that the redox process belonged to a reversible process controlled by adsorption in 0.2 mol·L^-1 PBS (pH = 4.0 ~ 10.0) solutions. The potentials of redox peaks moved more negatively with increasing pH value. This proved that the H⁺ proton has participcted in the electrochemical reaction. The further data analysis and the calculation of surface adsorption excess demonstrated that the reaction was a two-proton and two-electron process. …

The College Academic Self-Efficacy Scale (Cases); An Indonesian Validation To Measure The Self-Efficacy Of Students, Ifdil Ifdil, Khairul Bariyyah, Ari Khusuma Dewi, Itsar Bolo Rangka

Jurnal Kajian Bimbingan dan Konseling

This study examines the inventory properties of the Indonesian version of The College Academic Self-Efficacy Scale (CASES) which is originally Western, and was developed by Owen, S. V., & Froman, R. D. in 1988 to determine the level of student self-efficacy. The multi-stage random sampling method was used with 342 students as participants in Indonesia. Furthermore, the validity was analyzed using Cronbach’s alpha item analysis that shows the coefficient of α > .3, and the data showed that 33 items of Indonesian CASES were valid. In addition, as regards reliability, Cronbach’s alpha was also used for the analysis, and the result …

Algebraic Correction Of Algorithms For Recognition And Identification Of Biological Objects In Data Mining Problems, Mirzoyan Kamilov, Mirzaakbar Hudayberdiev

Chemical Technology, Control and Management

The integration of information technologies with biology is considered, enabling specialists to further study the subject area. The object of the study is the identification of the information structure and parameters of Insects Orthoptera of Uzbekistan. For this purpose, an information and identification software complex were created and the analysis of the variety of orthoptera having a certain internal structure and, accordingly, the formed structure of the relational database of the Insecta Orthoptera species was carried out. At the same time, attention will also be paid to the study of a number of scientific issues, one way or another related …

Modeling Of Multicomponent Rectification Under Uncertainty, Nodirbek Rustambekovich Yusupbekov, Djalol Patxiddinovich Mukhitdinov, Yorkin Bakhodirovich Kadirov

Chemical Technology, Control and Management

This paper presents a complete computer model for an industrial distillation column, which considers the input, output and model (nonlinearity and high-frequency dynamics of the process) uncertainties. The proposed model has a great advantage of covering the entire working range of the distillation column. This model can be used as a main tool for the analysis and synthesis of distillation process control systems.

Algorithms For Regular Synthesis Of Adaptive Systems Management Of Technological Objects Based On The Concepts Of Identification Approach, Husan Zakirovich Igamberdiev, Jasur Usmonovich Sevinov

Chemical Technology, Control and Management

Stable algorithms of adaptive control, estimation of controller parameters, synthesis of adaptive control of dynamic objects by the criterion of minimum dispersion, and synthesis of suboptimal adaptive-local control of dynamic objects based on predictive models are presented. Algorithms for the stable identification of dynamic control objects based on regularization and pseudoinversion methods based on a singular decomposition are presented. Based on the use of approximations in the form of a finite sum of Gaussian distributions, recurrent identification algorithms have been developed using multiple models and adapting their parameters. Stable algorithms are proposed for identifying the parameters of an object and …

Sustainable Algorithms For Generalized Estimation Of Dynamic Control Objects, Yulduz Muhtarhodjaeva Abdurakhmanova

Chemical Technology, Control and Management

The problems of separate and generalized assessment of the state and parameters of controlled objects under conditions of varying degrees of a priori uncertainty are considered. Stable algorithms for the generalized estimation of the state and parameters based on the quasilinearization method and the formal model of motion under conditions of statistical uncertainty, as well as the correction of the results of the generalized estimation, are presented. It is shown that the considered regularized generalized coordinate and parametric estimation algorithms make it possible to recover with sufficient accuracy the extended state vector of a dynamical system. The above algorithms make …