Pastoralist Use Of Reseeded Fields For Additional Resilience To Climate Variability Through Alternate Livelihood Activities,
2022
University of Arizona
Pastoralist Use Of Reseeded Fields For Additional Resilience To Climate Variability Through Alternate Livelihood Activities, D. W. Githu, J. S. Fehmi, M. Mcclaran, M. Elizabeth, A. Josephson
IGC Proceedings (1977-2023)
Land degradation, climate variability, socio-economic changes and population increase are some of the factors that shrink grazing lands making forage availability less predictable and affecting the resilience of pastoralists communities. Reseeding as an intervention can rehabilitate degraded lands for profitable use through offering pastoralists alternative sources of livelihood and encourage livelihood diversification. This study evaluated two pastoral communities, the Tugen and the Njemps from Baringo County, Kenya, who have owned, managed and used reseeded fields to study the dynamics of reseeding land. A total of 193 pastoralist households were interviewed. These two pastoral communities used their fields for: dry season …
Utilizing Perennial Grass Species’ Population Patterns To Detect Looming Desertification Tipping Points In Semi-Arid Regions,
2022
University of Namibia, Namibia
Utilizing Perennial Grass Species’ Population Patterns To Detect Looming Desertification Tipping Points In Semi-Arid Regions, F. Munyebvu-Chambara, W. C. Nesongano, M. C. Bilton, A. Linstädter
IGC Proceedings (1977-2023)
Namibia is one of the global dryland regions facing desertification threats due to overgrazing and recurrent drought. This has disastrous effects on forage provision and consequently on local livelihoods. Unfortunately, the mechanisms underlying sudden shifts of rangeland ecosystems towards a desertified state are still poorly understood. The ability to predict desertification tipping points with the aid of suitable ecological indicators is critical to ensure sustainable management of rangeland resources, which are a backbone of rural livelihood in drylands worldwide. Accordingly, we aimed to identify key perennial grass species that can be used as early-warning indicators for desertification tipping points; and …
Scientific And Technological Reasons, Contents And Corresponding Policies Of Constructing “Coastal Grass Belt”,
2022
Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
Institute of Seed Innovation, Chinese Academy of Sciences, Beijing 100101, China
Scientific And Technological Reasons, Contents And Corresponding Policies Of Constructing “Coastal Grass Belt”, Weihua Xu, Jianlin Wang, Xiaojing Liu, Qi Xie, Weicai Yang, Xiaofeng Cao, Zhensheng Li
Bulletin of Chinese Academy of Sciences (Chinese Version)
Not only the grain rations must be secured absolutely in China, but also the feed grains. However, the limited arable land resource in China determines that grass planting shall not "compete for land with staple food". Planting high quality salt-tolerant forage grass on the saline wasteland and developing animal husbandry production can not only meet the demand of increasing proportion of animal protein in Chinese diet structure, but more importantly, it can help to solve the problems of insufficient forage planting and import over-dependence. Hence it plays an important role in guaranteeing national food security. Therefore, it is necessary to …
The Role Of Improved Forages In Solving The Water Scarcity Issue Of 4 Billion People,
2022
International Center for Tropical Agriculture
The Role Of Improved Forages In Solving The Water Scarcity Issue Of 4 Billion People, S. Douxchamps, A. Notenbaert, J. A. Cardoso, M. Romero, M. Peters
IGC Proceedings (1977-2023)
Global animal production requires about 2422 Gm3 of water per year. Most of this volume is used by cattle, with 30% used in the beef sector and another 19% in the dairy sector. At the same time, four billion people suffer from severe water scarcity, raising the flag on diverting an important part of the water globally to livestock production. Livestock-water interactions have therefore gained a prominent profile and fuelled discussions on the water footprint of livestock. A series of studies on the most important components of the livestock water footprint have shown that globally more than 90% of …
Spring Forage Stash Module To Prevent Forage Crisis On Uruguayan Livestock Systems: An Evaluation Based On Model Simulations,
2022
Instituto Plan Agropecuario, Uruguay
Spring Forage Stash Module To Prevent Forage Crisis On Uruguayan Livestock Systems: An Evaluation Based On Model Simulations, M. Pereira Machín, F. Dieguez Cameroni
IGC Proceedings (1977-2023)
In Uruguay, rangeland cattle production systems support national economy by beef exportation chain and economic inputs to the country. Soil hydric stress episodes results to forage crisis on grassland-based production systems, having high impact on its trajectory and leaving sequels at several farm levels mainly on rearing cattle systems in drought sensitive regions of the country. In that context, the proposal is to create a spring forage stash module, with a simple management rules as a mechanism to build stability to farms and to buffering drought impact. The concept is to differ spring forage (season with low variation coefficient on …
Species Richness Increased Yield Stability In Intensively Managed Grasslands Subjected To Experimental Drought,
2022
Teagasc Environment Research Centre, Ireland
Species Richness Increased Yield Stability In Intensively Managed Grasslands Subjected To Experimental Drought, J. A. Finn, M. Suter, E. Haughey, D. Hofer, A. Lüscher
IGC Proceedings (1977-2023)
Climate change is expected to cause an increase in the frequency and intensity of drought events. Over two years we investigated the effects of experimentally imposed drought on intensively managed grassland communities (5 m x 6 m plots) of varying richness (1, 2 and 4 species), and comprising four species (Lolium perenne L., Cichorium intybus L., Trifolium repens L., Trifolium pratense L.). In each year a summer drought period of nine weeks with complete exclusion of precipitation was simulated, inducing severe drought stress at Reckenholz (Zürich, Switzerland), and extreme drought stress at Wexford (Ireland). Mean yield and plot-to-plot variance …
Soil Nitrous Oxide (N2O) Emission From Integrated Soil Fertility Management In Maize (Zea Mays L.) Cropping Systems,
2022
University of Nairobi, Kenya
Soil Nitrous Oxide (N2O) Emission From Integrated Soil Fertility Management In Maize (Zea Mays L.) Cropping Systems, R. Rogito, N. Karanja, L. Merbold, M. Necpalova, J. Six
IGC Proceedings (1977-2023)
Integrated Soil Fertility Management (ISFM) has been recommended to address challenges of low soil fertility by incorporating locally available organic resources (ORs) together with inorganic nitrogen (N) fertilizers. Despite ISFM success in field trials, there is limited information on ORs contribution to atmospheric greenhouse gas concentrations through N2O emission. A short-term field study was conducted at two sites with different soil types; silt loam (Aludeka) and silty-clay soil (Sidada) to assess the influence of selected ORs on soil N2O emissions. The ORs treatments included; Calliandra carothyrsus (CL), farmyard manure (FYM) and maize stover (MS) with (+N) …
Response Of Soil Respiration To Precipitation Variation In Alfalfa Grassland On The Western Loess Plateau: Hysteresis And Diel Q10,
2022
Lanzhou University, China
Response Of Soil Respiration To Precipitation Variation In Alfalfa Grassland On The Western Loess Plateau: Hysteresis And Diel Q10, H. K. Chu, H. Ni, J. Y. Ma, Yuying Shen
IGC Proceedings (1977-2023)
Soil respiration (Rs) plays an important role in the terrestrial carbon cycle, but how precipitation variation affects Rs in alfalfa grassland is poorly understood. To explore the effects of precipitation variation on Rs, this experiment was conducted by using rainfall shelters to simulate 30% precipitation reduction (P-30), normal precipitation (CK) and 30% precipitation increase (P+30) for an alfalfa (Medicago sativa) grassland in the Qingyang city, Gansu province, China. Rs was measured continuously using an automated soil respiration system (model LI-8100A with an LI-8150 multiplexer, LI-COR, Nebraska, USA) during the overwintering preparation period of alfalfa. The results showed that …
Soil Carbon Accumulation Under Perennial Forage Grasses In The Southern Highlands Of Tanzania,
2022
International Center for Tropical Agriculture, Kenya
Soil Carbon Accumulation Under Perennial Forage Grasses In The Southern Highlands Of Tanzania, S. S. Nyawira, P. Birthe, M. J. Korir, B. Nzogela, A. O. Notenbaert
IGC Proceedings (1977-2023)
Land degradation caused by the loss of SOC in continuously cultivated agricultural systems is a major problem in many sub-Saharan Africa countries. The integration on perennial forage grasses in cropping systems has the potential to enhance SOC sequestration. The main objective of this study is to compare soil organic carbon (SOC) under perennial forages with SOC under annual food crops, specifically maize (Zea mays). A survey was conducted in Njombe district in the Southern Highlands of Tanzania to identity farmers with planted forages that are more than five years old and with neighbouring maize plots. Survey results identified …
Perennial Forage Grasses Response To Deficit Irrigation As An Alternative For Water-Limited Conditions Of Southern Chile,
2022
INIA, Chile
Perennial Forage Grasses Response To Deficit Irrigation As An Alternative For Water-Limited Conditions Of Southern Chile, Rafael López-Olivari, Fernando Ortega-Klose
IGC Proceedings (1977-2023)
Perennial grasses are an important pasture forage source for the animal production industry around the world. However, the lack of available water limits the use and efficiency of the water resource for maximizing the forage yield. Furthermore, the highest perennial grasses production is obtained in southern Chile, where the frequency and intensity of the rainfalls has been significantly diminished in the main growing period. Thus, the purpose of this research was to evaluate the responses of forage yield (FY) and irrigation water use efficiency (IWUE) under different levels of water stress on perennial grasses sown …
Quantification Of Methane Emissions From Indoor-Fed Fogera Dairy Cows Using Laser Methane Detector,
2022
Tottori University, Japan
Quantification Of Methane Emissions From Indoor-Fed Fogera Dairy Cows Using Laser Methane Detector, N. Kobayashi, F. Hou, A. Tsunekawa, Tianhai Yan, F. Tegegne, A. Tassew, Y. Mekuriaw, S. Mekuriaw, B. Hunegnaw, W. Mekonnen, T. Ichinohe
IGC Proceedings (1977-2023)
Portable laser methane detectors (LMDs) may be an economical means of estimating CH4 emissions from ruminants. Here, we validated an LMD-based approach and then used that approach to evaluate CH4 emissions from indigenous dairy cows in a dryland area of Ethiopia. First, we validated our LMD-based approach in Simmental crossbred beef cattle (n = 2) housed in respiration chambers and fed either a high- or low-concentrate diet. We found that the exhaled air CH4 concentrations measured by LMD were linearly correlated with the CH4 emissions determined by infrared-absorption-based gas analyzer (r2 = 0.55). …
An Ecophisiological Proposal To Manage Natural Grasslands: A Long Term Trial,
2022
Universidade Federal de Santa Maria, Brazil
An Ecophisiological Proposal To Manage Natural Grasslands: A Long Term Trial, F. L. F. De Quadros, D. Roberti, L. Marin, B. Kuinchtner, P. L. Nascimento
IGC Proceedings (1977-2023)
Natural grasslands on Southern Brazil comprise the so called “Rio de La Plata Grasslands” in South America. They are an important fodder source for ruminant pastoral systems and contribute to regional ecosystem services. Strength of these grasslands is its floristic diversity that poses a dilemma to farmers: how to choose management protocols that could be applied for hundreds of species. We propose to use a functional ecophysiological approach based on groups of grasses, the most abundant on aerial biomass of this natural grasslands. We clustered the most frequent grasses in two groups based on its leaf traits (leaf dry matter …
When The Natural Toxin Concentration In Crotalaria Increase In Japan?,
2022
NARO, Japan
When The Natural Toxin Concentration In Crotalaria Increase In Japan?, M. Kaneko, N. Kato, I. Hattori
IGC Proceedings (1977-2023)
A green manure crop, sunn hemp (Crotalaria juncea L.), legumes, has a nematode-suppressive effect. It is also used as feed in India. However, it is not used as feed in Japan because it contains natural toxins: Pyrrolizidine alkaloids (PAs). PAs has the negative effects for not only livestock but also human health. The PAs, which are abundant in sunn hemp seeds and which are contained only slightly in leaves and stems. Therefore, if sunn hemp harvested before flowering, then no poison problem is posed by PAs. However, if it is harvested at the podding stage, a poisonous concentration of …
Accelerate Scaling Up Forage Intensification Using Novel Digital Extension Approach In Kenya,
2022
Kenya Agricultural and Livestock Research Organisation, Kenya
Accelerate Scaling Up Forage Intensification Using Novel Digital Extension Approach In Kenya, Donald M. G. Njarui, Mwangi Gatheru, Jessica M. Ndubi, Alice W. Murage, Anne W. Gichangi, Elias M. Gichangi, Udaya S. Nogothu
IGC Proceedings (1977-2023)
Wide scale adoption of diverse forages improves livestock productivity and farmers welfare. However, limited access to information and knowledge on forage production results in slow adoption in Kenya. There is need to enhance information and knowledge exchange among farming communities for efficient and effective adoption and decision-making. An inter-institutional pilot project was initiated in 2017 to scale-up forages in Kenya using a novel extension approach - the village knowledge centre (VKC). A VKC is an information and communication technology (ICT) digital platform-based linking farmers through smart phones and social media as a conduit for faster and effective information and knowledge. …
Evaluation Of Annual Companion Crops For The Establishment Of Perennial Forage Crops In Eastern Canada,
2022
McGill University, Canada
Evaluation Of Annual Companion Crops For The Establishment Of Perennial Forage Crops In Eastern Canada, Philippe Seguin, Sandrine St-Pierre-Lepage, Céline Georlette, Caroline Halde, Gaëtan F. Tremblay, Huguette Martel, Ayitre Akpakouma
IGC Proceedings (1977-2023)
The use of companion crops when establishing perennial forages is desirable as it often reduces weed growth and increases forage biomass in the seeding year. In eastern Canada, oat (Avena sativa L.) is the main species used as companion crop; although other species are used, they have not been systematically evaluated. A field study was established in 2019 at three sites in Québec, Canada, to contrast the use of six annual species as companion crops for the establishment of lucerne (Medicago sativa L.)-timothy (Phleum pratense L.) mixtures. Species evaluated include berseem clover (Trifolium alexandrinum L.), annual …
Variation Of Pollen Viability In Brachiaria Species And Opportunity In Increased Filled Seed Percentage,
2022
Kagoshima University, Japan
Variation Of Pollen Viability In Brachiaria Species And Opportunity In Increased Filled Seed Percentage, Weenaporn Juntasin, Sarayut Thaikua, Rattikan Poungkaew, Pichet Chanpeng, Sompon Waipanya, Yasuhiro Kawamoto
IGC Proceedings (1977-2023)
On pseudogamy process, pollen fertility affects endosperm development in Brachiaria apomictic hybrids. Also, it was well-known that self-incompatibility could affect the fertilization in cross pollination species. Evaluation of pollen viability and percentage of filled seed, and the demonstration of pollen induction technique for increasing filled seed percentage in Brachiaria spp. are presented in this paper. In the first experiment, 8 cultivars/breeding lines of Brachiaria, including 2 open-pollinated cultivars, an apomictic cultivar and 5 hybrids, were planted in randomized completely block design, with 3 replications at northeast Thailand. Each experimental unit consisted of 20 plants, 6 central plants were evaluated. …
Evaluation Of Herbage Intake Estimation Methods For Dairy Cattle Grazing On Semi-Extensive Pastures,
2022
University of Hohenheim, Germany
Evaluation Of Herbage Intake Estimation Methods For Dairy Cattle Grazing On Semi-Extensive Pastures, S. Perdana-Decker, E. Velasco, J. Werner, U. Dickhoefer
IGC Proceedings (1977-2023)
Available empirical and mechanistic models to estimate total dry matter intake (DMI) and pasture dry matter intake (PDMI) of grazing lactating dairy cows have mainly been developed under intensive grazing conditions. The objective was to evaluate the adequacy of such existent models for use under semi-extensive grazing conditions, characterised by semi-natural grassland and less intensive resource use. Feed intake of lactating cows was measured on three commercial organic dairy farms in South Germany during one or two 6-d-periods/farm in 2019. Each period, DMI was determined in 10 or 20 cows per farm from their daily faecal output measured using titanium …
Tracing The Path Of Technology Diffusion: The Case Of Nturumenti, Narok, Kenya,
2022
Kenya Agricultural and Livestock Research Organization, Kenya
Tracing The Path Of Technology Diffusion: The Case Of Nturumenti, Narok, Kenya, Paul N. Katiku, R. Kimitei, S. Amboga, G. A. Keya, B. Korir, J. Nginyi
IGC Proceedings (1977-2023)
An array of technologies; growing improved wheat varieties, bulking and collective marketing of wheat grains, sheep breed improvement, ram sharing, feedlot sheep fattening for market, strategic sheep deworming, pasture establishment and conservation practices; were introduced to members of a community based organization (CBO) in Nturumenti, anti-female genital mutilation and anti-poverty organization (AFAPO) in 2014. The CBO members, composed of youthful 19 men and 7 females, were intensively exposed and involved in the new skills both theoretically and practically in the farmers’ field school model. Even though the 8 farming technology options were suitable for the study environment, their adoption and …
The Use Of Sunn Hemp As Forage In Florida,
2022
University of Florida
The Use Of Sunn Hemp As Forage In Florida, João M. B. Vendramini, J. E. Garzon Alfonso, H. M. Da Silva, Maria L. Silveira, J. C. B. Dubeux Jr., M. Kaneko
IGC Proceedings (1977-2023)
Sunn hemp (Crotalaria juncea L.) is a warm-season annual legume that has been widely used as cover crop; however, there is potential to use sunn hemp as forage in subtropical regions. The objective of this study was to evaluate management practices to improve the efficiency of using sunn hemp as a forage crop. The study was conducted in Ona, Florida, USA from 2016 to 2018 and tested the factorial arrangement of five sunn hemp genotypes (Crescent Sunn, Ubon, Blue Leaf, and AU Golden) and two harvest times (60 d after seeding or flowering) with four replicates. There was a …
The Optimum Seeding And Harvesting Dates Of Sorghum-Sudangrass Hybrid (Sorghum Bicolor L.) Via Optimum Moving Response Surface Methodology,
2022
Kangwon National University, South Korea
The Optimum Seeding And Harvesting Dates Of Sorghum-Sudangrass Hybrid (Sorghum Bicolor L.) Via Optimum Moving Response Surface Methodology, M. Kim, J. Y. Kim, M. H. Jo, C. H. Kim, K. Sung
IGC Proceedings (1977-2023)
This study aimed to detect the optimum seeding and harvesting dates, and to verify the variation of dry matter yield (DMY) for sorghum-sudangrass hybrid (SSH) via optimum moving RSM proposed to optimize the RSM in metadata. For detecting the optimum point, a response surface methodology (RSM) has been known well in agricultural science. The SSH metadata (n = 856) consists of individual experiments that could be performed to check the optimum seeding and harvesting dates by classic RSM. However, the SSH metadata failed to produce an effective single equation which can be detected the optimum seeding and harvesting dates due …
