Diversity And Sustainability Of The Pek Savannas Of The Lao Pdr,
2024
Asian Institute of Technology
Diversity And Sustainability Of The Pek Savannas Of The Lao Pdr, V Phengvichith, J B. Hacker
IGC Proceedings (1977-2023)
The pek savannas of the Lao PDR occur in the southern half of the country and are relatively undeveloped. They are disjunct upland communities characterised by an understorey dominated by three species of Arundinaria, known locally as pek. The canopy varies from open forest to woodland. In relatively undisturbed communities, pek grows to c. 1.5 m tall, and is generally 99% pure, with tall growing grasses occurring infrequently. Higher levels of disturbance lead to invasion of shrub species and ingress of some lower-growing grasses and occasional legumes, some of which are palatable to livestock. Pek is palatable to livestock …
Research Programme To Improve The Utilization Of Home-Grown Forages In The Netherlands,
2024
ID-DLO, Lelystad
Research Programme To Improve The Utilization Of Home-Grown Forages In The Netherlands, A.M. Van Vuuren, A H. Bosma, G J. Kaspers, J.J. M.H. Ketelaars, E.N. Van Loo, H J.P. Marvin, H Valk, G.W.J. Van De Ven
IGC Proceedings (1977-2023)
In The Netherlands a research programme has been initiated by the Ministry of Agriculture, Nature Management and Fisheries to increase the proportion of high-quality home-grown forage in rations for dairy cows. This should result in a more sustainable dairy husbandry by improving the efficiency of utilization of nitrogen and phosphorus from home-grown forages (mainly grass and maize) on farm level. Research disciplines involved are plant breeding, forage harvesting and conservation and nutrition.
The European Ryegrass Core Collection: A Tool To Improve The Use Of Genetic Resources,
2024
Institute of Grassland and Environmental Research, Plas Gogerddan, United Kingdom
The European Ryegrass Core Collection: A Tool To Improve The Use Of Genetic Resources, N R. Sackville Hamilton, I D. Thomas, P Marum, L Ostrem, M Sevcíková, E Willner, F Balfourier, B Boller, V F. Chapurin, V Connolly, G Dologa, H Fritzen, T Van Hintum, L Horváth, W Majtkowski, V Negri, A Oliveira Prendes, D Reheul, D Shamov1, T Vaitsis
IGC Proceedings (1977-2023)
A core collection of 162 populations of ryegrass (Lolium perenne) native to 18 European countries, is being evaluated across Europe in a multi-country trial. Each participating country contributed the lesser of 10% or 25 accessions from its collection of native populations. The accessions are being grown at 18 sites in 17 countries. Quick, cheap protocols were developed for evaluation. Preliminary results are presented for performance during the first winter. Populations of northern origin showed uniformly low winter damage and low winter growth at all evaluation sites. Populations of Mediterranean origin were more affected by the environment used for …
Differences Between Adapted Populations Of Dactylis Glomerata L. In Argentina,
2024
Instituto Nacional de Tecnologia Agropecuaria, Argentina
Differences Between Adapted Populations Of Dactylis Glomerata L. In Argentina, A Andres, M Barufaldi
IGC Proceedings (1977-2023)
Nine adapted populations of orchardgrass (Dactylis glomerata L.) were collected from different grassland environments of Buenos Aires Province, Argentina, in order to investigate genetic differences between and within populations. Fifty plants per population were clonally propagated and transplanted as spaced-plant trial in a randomized design with three replicates. The results indicated large differences between and within populations for most attributes measured. Attributes related with the expression of foliar diseases and seed yield had the highest broad-sense heritability values. The results suggest that the genetic variation found in the adapted populations of orchardgrass has been mainly determined by the environmental …
The Plants Database: Providing Basic Plant Information,
2024
USDA, Natural Resources Conservation Service, National Plant Data Center
The Plants Database: Providing Basic Plant Information, J S. Peterson, J F. Henson, W Oaks, J T. Kartesz
IGC Proceedings (1977-2023)
The PLANTS database provides basic plant information to the United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS), its clients, cooperators, and the general public via the World Wide Web (Fig. 1). The foundation of PLANTS is a taxonomic backbone (checklist) of the vascular and nonvascular plants of North America (north of Mexico) and United States territories in the Caribbean and Pacific regions. Attribute data are appended to this backbone pertaining to distribution, vegetative specifications, nativity, federal and state status, crop data, growth form, growth parameters, species abstracts, and images.
Forage Production Potential Of Poa Arachnifera Torr In Semi-Arid Climates,
2024
Texas A&M University - Dallas
Forage Production Potential Of Poa Arachnifera Torr In Semi-Arid Climates, J C. Read, M A. Sanderson, G W. Evers, P W. Voigt, J A. Reinert
IGC Proceedings (1977-2023)
This study was undertaken to determine the forage potential of Texas bluegrass (Poa arachnifera Torr). Texas bluegrass is a perennial coolseason grass native to Kansas, Oklahoma, western Arkansas, and the central region of Texas, USA (Gould, 1975). Thirteen different accessions were established in 1988 at the Texas A&M University Centers at Dallas and Stephenville and tested for 2 years. Mean yields at Stephenville and Dallas were 3610 and 6022 kg ha-1. Two synthetic varieties (Syn-1 and Syn-2) were tested from 1990 to 1995 at four locations in Texas. Yields of Syn-1 was greater than Syn-2 whereas Syn- 2 provided …
More Aeschynomene Pasture Legumes For The Tropics And Sub-Tropics,
2024
Department of Primary Industries and Regional Development, Western Australia
More Aeschynomene Pasture Legumes For The Tropics And Sub-Tropics, H G. Bishop, B G. Cook, B H. English, J J. Bushell, T B. Hilder
IGC Proceedings (1977-2023)
Two cultivars of Aeschynomene villosa were released in Queensland in 1995. Cultivars ‘Reid’ (previously CPI 91209) and ‘Kretschmer’ (previously CPI 93621) are both native to Mexico and are the first cultivars of A. villosa to be released as pasture legumes. They will complement the three Aeschynomene cultivars already in use in tropical and sub-tropical northern and eastern Australia, namely cultivars ‘Glenn’ and ‘Lee’ (A. americana) and ‘Bargoo’ (A. falcata). Characteristics of Reid and Kretschmer jointvetch include, early seeding perennials within high seed yields, prostrate to semi-erect growth habit, adaptation to a wide range of soil types …
Calibration Of Hybrid-Maize Model For Simulation Of Soil
Moisture And Yield In Production Corn Fields,
2024
University of Nebraska - Lincoln
Calibration Of Hybrid-Maize Model For Simulation Of Soil Moisture And Yield In Production Corn Fields, Anthony A. Amori, Olufemi P. Abimbola, Trenton E. Franz, Daran Rudnick, Javed Iqbal, Haishun Yang
Department of Agronomy and Horticulture: Faculty Publications
Model calibration is essential for acceptable model performance and applications. The Hybrid-Maize model, developed at the University of Nebraska-Lincoln, is a process-based crop simulation model that simulates maize growth as a function of crop and field management and environmental conditions. In this study, we calibrated and validated the Hybrid-Maize model using soil moisture and yield data from eight commercial production fields in two years. We used a new method for the calibration and multi-parameter optimization (MPO) based on kriging with modified criteria for selecting the parameter combinations. The soil moisture-related parameter combination (SM-PC3) improved simulations of soil water dynamics, but …
Soil Nitrification Inhibition With Plantain (Plantago Lanceolata),
2024
Plant & Food Research, Lincoln, New Zealand
Soil Nitrification Inhibition With Plantain (Plantago Lanceolata), M. E. Peterson, P. M. Fraser, C. R. Anderson, N. I. Joyce, H. G. Judson
IGC Proceedings (1977-2023)
One strategy to reduce nitrogen losses from intensively grazed forage systems is to slow the first stage of soil nitrification, specifically inhibiting the microbial oxidation of ammonium to nitrite. Plantain (Plantago lanceolata) leaves and roots are known to contain several bioactive compounds (e.g., aucubin, catalpol and verbascoside) that may contribute to this inhibition. Recent laboratory studies indicate that this inhibition occurs via consumption by grazing animals of precursor bioactive compounds in aboveground biomass and their subsequent excretion as secondary metabolites in urine and/or via active exudation from the roots. Different cultivars of plantain have been shown to impart …
Forage Genomics Accelerate The Germplasm Resource Innovation,
2024
Lanzhou University, China
Forage Genomics Accelerate The Germplasm Resource Innovation, Fan Wu, Qi Yan, Pan Xu, Zhen Duan, Jiyu Zhang
IGC Proceedings (1977-2023)
To achieve sustainability and food security we need expand the germplasm base and access novel genetic diversity to accelerate breeding. For developing new forage cultivars, the availability of a high-quality genome facilitates accurate characterization of new germplasm, and an understanding of the genetics underlying important traits. Here, we sequenced and assembled three high-quality chromosome-level forage genomes. The contig-level assembly of Cleistogenes songorica (2n = 4x = 40) comprised 540.12 Mb of the genome, with a contig N50 of 21.28 Mb. Complete assemblies of all telomeres, and of ten chromosomes were derived. The chromosome-scale genome size of elephant grass (2n = …
Theory And Application Of No-Till Reseeding Technology In Degraded Grasslands In China,
2024
China Agricultural University, China
Theory And Application Of No-Till Reseeding Technology In Degraded Grasslands In China, Jingying Jing, Hongyan Ma, Yingjun Zhang
IGC Proceedings (1977-2023)
Grasslands occupy nearly 400 million hectares in China, accounting for about 40.7% of the total land area, provide multiple ecological and economic benefits. However, due to over-grazing and over-cultivation, more than 90% grasslands in China are threatened by degradation that has caused significant negative impact on biodiversity and ecosystem functioning, such as biodiversity losses, decreased productivity, increased soil erosion etc. Thus, restoration of degraded grassland is urgent for sustainable grassland management in China. No-till reseeding has been found to be an effective way for grassland vegetation regeneration with improved productivity and increased plant diversity via reseeding suitable species with minimum …
Rangeland-Centered Agroecosystems In Indian Central Himalayas: Operationalizing Ecological Sustainability In Mountain Agriculture,
2024
GB Pant University of Agriculture and Technology, India
Rangeland-Centered Agroecosystems In Indian Central Himalayas: Operationalizing Ecological Sustainability In Mountain Agriculture, Vir Singh
IGC Proceedings (1977-2023)
Himalayan Mountains are home to unique agroecosystems harboring unique inter- and intra-species diversity in uncultivated and cultivated lands. The uncultivated lands are largely the rangelands which are ecologically more stable ecosystems than the cultivated lands which are ecologically prone areas. Rangelands, cultivated areas, and livestock in mountain agriculture are in organic linkages with each other, woven into a complex unitary whole, functionally oriented to produce foods and other life-supporting products – such as feed, fiber, fuel, fertilizers, etc. – and provide vital ecological functions. Rangelands in fragile Himalayan mountains serve as a key component of agriculture and the biodiversity conserved …
Mentoring Graduate Students For Academic Careers In Grassland Science,
2024
University of Florida
Mentoring Graduate Students For Academic Careers In Grassland Science, L. E. Sollenberger
IGC Proceedings (1977-2023)
Effective mentorship enhances student productivity and career achievements, yet faculty generally do not receive mentorship training, nor does mentorship receive focused attention, evaluation, and recognition. The objectives of this paper are to 1) define mentorship and identify roles of a mentor, 2) highlight qualities and outcomes of effective mentoring, and 3) elaborate best mentoring practices, metrics for assessing mentoring, and challenges for mentoring the next generation of grassland scientists. Mentoring is a professional alliance where individuals work together to support the personal and professional growth, development, and success of the relational partners. Mentors should be altruistic discipline experts, have substantial …
National Forage Week,
2024
University of Georgia
National Forage Week, B. Stefancik, K. Mullenix
IGC Proceedings (1977-2023)
Social media can be a powerful tool for producers, researchers, and grassland professionals. Social media enables us to connect with a wide audience of producers, Extension personnel, colleagues, industry partners, and even the non-agriculture related community. This presentation in the thematic session on “Understanding the role of social media and digital resources in forage education and promotion” will focus on the impact of National Forage Week. National Forage Week is national campaign initiated by the American Forage and Grassland Council to promote forages and their contributions to society.
Maize-Alfalfa Intercropping Promote Ecosystem Services Than Fertilized Single Crops,
2024
Northeast Normal University, China
Maize-Alfalfa Intercropping Promote Ecosystem Services Than Fertilized Single Crops, D. X. Tao, Y. Z. Gao
IGC Proceedings (1977-2023)
Phosphorus is a non-renewable source of fertilization, which will challenge the future of food production and cropland sustainability worldwide. Crop diversity is known to promote food production, yet its capacity to alleviate the dependence of multiple ecosystem services on non-renewable fertilization remains virtually unknown. Here, we conducted a field experiment to quantify the contribution of maize-alfalfa intercropping to support multiple ecosystem services under contrasting levels of phosphorus fertilization. We showed that unfertilized intercropping systems can support larger levels of multiple ecosystem services such as soil microbial habitat, plant-soil mutualism, nutrient cycling, and soil carbon storage compared with phosphorus-fertilized single crops. …
Identification Of Hyperspectral Characteristics Of The Main Plants In Seriphidium Transiliense Desert Grassland,
2024
Xinjiang Agricultural University, China
Identification Of Hyperspectral Characteristics Of The Main Plants In Seriphidium Transiliense Desert Grassland, Wenhao Liu, Wanqiang Han, Guili Jin, Ying Li, Ke Gong, Jian Ma, Zhibiao Liu, Jiazin Li, Mengtian Chen
IGC Proceedings (1977-2023)
Ground hyperspectral images of sericite–Artemisia desert grassland in different seasons were obtained by a soc710 VP imaging spectrometer. Analysis of variance was used to extract the main species Seriphidium transiliense, Ceratocarpus arenarius, and Petrosimonia sibirica and the spectral characteristic parameters and vegetation indices of bare land in different seasons. On this basis, Fisher discriminant analysis was used to divide the samples into a training set and test set according to a ratio of 7:3. The spectral characteristic parameters and vegetation indices were used to identify the three main plants and bare land. Results showed that under Fisher discriminant analysis, …
A Transdisciplinary Approach To Landscape Transformation Towards Perennial, Diverse, Circular Systems: Why And How,
2024
University of Wisconsin-Madison
A Transdisciplinary Approach To Landscape Transformation Towards Perennial, Diverse, Circular Systems: Why And How, V. Picasso, C. Williams
IGC Proceedings (1977-2023)
Prevailing agricultural systems in the U.S. are dominated by intensification through annual crop monocultures and high amounts of external inputs. Increased yields per unit of land have resulted but many undesirable environmental, ecological, and socioeconomic outcomes have co-occurred. Lack of resilience within intensified agricultural systems is a factor in these outcomes. Redesign of agricultural systems and changes in federal policy are needed to better support resilience in agriculture. Redesign for greater resilience must encourage adoption of agricultural systems that are diverse, perennial, circular, and include forages. We developed a transdisciplinary framework within a project orientation with a focus on crops …
Breeding Cool-Season Forage Grasses For A Warming Climate,
2024
Texas A&M AgriLife Research
Breeding Cool-Season Forage Grasses For A Warming Climate, D. P. Malinowski, J. Ford, A. Stewart, D. Woodfield, W. E. Pinchak
IGC Proceedings (1977-2023)
In many parts of the world, changing climatic conditions are resulting in increased temperatures and more variable precipitation, intensifying the duration and severity of drought, especially in summer. Warming climate is considered one reason for the increasing failure of traditional, summer-active cool-season perennial grasses at the margin of their zone of adaptation in naturally C4 grass-dominated ecosystems of the Southern Great Plains of the USA. Two cool-season perennial forage grasses orchardgrass (Dactylis glomerata L.) and tall fescue (Lolium arundinaceum (Schreb.) Darbysh.) are of major economic and ecological importance in these regions. In 2008, we initiated a breeding program …
Invasive Annual Grass Issues In Canadian Rangelands,
2024
Envu 2022 Environmental Science , Canada
Invasive Annual Grass Issues In Canadian Rangelands, V. Maloney
IGC Proceedings (1977-2023)
It has been understood for several years now that Canadian grasslands are among the world’s most endangered ecosystems. While the endangerment of the world’s coral reefs and rainforests may make the news more often, the increasingly fast decline of native Canadian grasslands is having a major impact on species diversity as well as global carbon supplies. In this paper, I will discuss the impact invasive annual grasses have had on two important rangeland ecosystems in Canada. Furthermore, strategies for protecting and restoring these invaluable lands will be discussed.
Forage Data Hub – A Platform For Sharing Valuable Datasets For Resilience,
2024
USDA-Agricultural Research Service
Forage Data Hub – A Platform For Sharing Valuable Datasets For Resilience, Amanda J. Ashworth, L. Marshall, J. J. Volenec, M. Berti, E. Van Santen, C. Williams, V. Gopakumar, J. Foster, V. Picasso, J. Su
IGC Proceedings (1977-2023)
In accord with the necessity to enhance ecosystem services and productivity in food systems, is the increase of data availability at multiple scales and over time. To help meet this need, we discuss the development of a National Forage Data Hub which will act as a platform to curate, share, and analyze data pertaining to forage systems. This centralized hub will leverage existing datasets by bridging multiple sources including forage crop—soil, water, and nutrient availability—yield (animal and crop) potential (and gaps)— climate—management systems at high spatial and temporal resolution enabling system interaction assessments through next-generation analytics. This novel approach to …
