Forage Based Fallow Management Strategies For Intensified Land Use And Resource Conservation In Small Holder Farms, M A. Mohamed Saleem, Kahsay Berhe
IGC Proceedings (1977-2023)
Intensification of land-use is inevitable for long term food security in the east African highlands, but technological options need to be environmentally safe. How forages can be used as a basis for intensified grain and fodder production from the same land unit, and serve as a profitable fallow during necessary crop-free rest period is the purpose of this study.
Water Use In A Newly Established Pasture As Influenced By Grazing Management,
2024
University of Manitoba
Water Use In A Newly Established Pasture As Influenced By Grazing Management, M H. Entz, W P. Mccaughey
IGC Proceedings (1977-2023)
The objective of this study was to determine the effects of grazing system and stocking rate on spring profile soil water, soil water extraction and evapotranspiration (ET) of a newly established grass/ legume pasture. The experiment, located on a fine sandy loam soil in western Manitoba, was a two replicate RCBD with continuous and rotational grazing at stocking rates of 1.1 and 2.2 steers/ha. The pastures contained alfalfa (Medicago sativa L.), meadow bromegrass (Bromus biebersteineii Roem and Shult.) and Russian wild ryegrass (Elymus juncea L.). Growing season ET averaged 38.4 cm and was consistently highest for …
The Effect Of Crop Residues On Cattle Productivity Wihtin Agropastoral Production Systems In Southern Mali,
2024
Agricultural University, The Netherlands
The Effect Of Crop Residues On Cattle Productivity Wihtin Agropastoral Production Systems In Southern Mali, S.J L.E Leloup, L 'T Mannetje
IGC Proceedings (1977-2023)
The effect of seasonal diet on cattle productivity was studied in a village in southern Mali. A comparison of measured and simulated liveweight changes of cattle proved that crop residue consumption during the dry season has become indispensable for animal production. Correspondingly, maximum livestock numbers to be fed during the dry season appeared to be directed by crop residue availability. Apparently crop residue availability determines cattle productivity in this village. This is likely to be the case in most of southern Mali where the importance of rangelands’ perennial grasses is decreasing.
Grazing Impacts On The Production Stability Of Fescue Prairie,
2024
Agriculture and Agri-Food Canada Research Centre
Grazing Impacts On The Production Stability Of Fescue Prairie, W D. Willms, J F. Dormaar, J R. King
IGC Proceedings (1977-2023)
The fescue prairie in southwestern Alberta is highly productive but susceptible to grazing during the growing season. This study examined how production stability is affected by grazing impact. It was initiated in 1949 using four fixed stocking rates (1.2, 1.6, 2.4, 4.8 animal-unitmonths ha-1). Forage and livestock production were estimated over 4 or 15 years, respectively. The coefficient of variation (CV) for either primary or secondary production was constant over all rates except for the very heavily stocked paddock. Forage production, and therefore livestock production, in that paddock was dependent on precipitation during the growing season. Heavy grazing pressure resulted …
Dry Matter Allocation And Nutritive Value Of Tropical And Temperate Fodder Trees And Shrubs In The Gauteng Province Of South Africa,
2024
University of Pretoria
Dry Matter Allocation And Nutritive Value Of Tropical And Temperate Fodder Trees And Shrubs In The Gauteng Province Of South Africa, J P. Lindeque, N.F G. Rethman, C C. Botha
IGC Proceedings (1977-2023)
Fodder tree and shrub species from the genera Albizzia, Atriplex, Cassia, Chamaecytisus, Cytisus, Leucaena, Lupinus, Medicago, Sesbania and Teline were evaluated in terms of their adaptation to local conditions and potential production of protein-rich forage and fuelwood. Atriplex nummularia, Cassia sturtii, Chamaecytisus palmensis, Cytisus maderiensis, Leucaena species, Sesbania sesban and Teline stenopetala offer considerable potential, both in terms of yield of protein-rich forage and/or fuelwood.
The Role Of Tagasaste (Chamaecytisus Proliferus) In Farming Systems Of Southern Australia,
2024
University of Washington
The Role Of Tagasaste (Chamaecytisus Proliferus) In Farming Systems Of Southern Australia, E C. Lefroy, A K. Abadi Ghadim, N J. Edwards, M A. Ewing
IGC Proceedings (1977-2023)
Farm scale economic analysis of a recently developed alley cropping system based on the fodder shrub tagasaste (Chamaecytisus proliferus) was carried out using the optimising model MIDAS. The model was used to assess the potential application of this new farming system to infertile sandplain soils in southern Australia by comparing the profitability of improved serradella based annual pasture (Ornithopus compressus and O. sativa), tagasaste in plantations and tagasaste alley cropping. The third option was the most profitable, increasing sheep carrying capacity by 76% and resulting in 45% of the model farm being planted to tagasaste alley …
Short-Term Effects Of Grazing And Rest Treatments On The Seed Banks Of Two Contrasting Sites In The Semiarid Pampas, Argentina, M O. Aguilera, M M. Marchi, O Terenti
IGC Proceedings (1977-2023)
The germinable seed bank was characterized in relation to season, grazing, and site type at southcentral San Luis, Argentina. Vegetation is typical of the semiarid western extreme of the Pampas grasslands. Our objective was to evaluate the effect of grazing and rest during the growing season on seed banks for two contrasting sites. Seed banks were sampled twice, in spring and fall. In each date, soil cores were obtained in sanddune and flat sites, for pastures grazed or that remained ungrazed during the growing season. Soil was spread in trays under suitable conditions for germination. Evaluations were done on total …
Can The Restoration Of Degraded Rangelands Ever Be Economic?,
2024
CSIRO
Can The Restoration Of Degraded Rangelands Ever Be Economic?, N D. Macleod, J C. Noble, J R. Brown
IGC Proceedings (1977-2023)
Degradation of rangeland pastures in Australia is widespread and ongoing. The characteristics of many restoration technologies in relation to land values contribute to a perception of their being uneconomic. However, while this might be true within the general context of broadscale application, it need not be the case in specific instances. Both the underlying contexts and processes need to be considered in assessing the economic value of a given restoration technique for a given degradation problem.
Modifying Management Methods To Promote The Reform And Development Of Grassland Based Animal Husbandry Through Better Resource Use,
2024
Xin Jiang Academy of Animal Science
Modifying Management Methods To Promote The Reform And Development Of Grassland Based Animal Husbandry Through Better Resource Use, Cui Heng-Xin, Zhang Jiang-Ling, Asya Jiang-Ling
IGC Proceedings (1977-2023)
The development of grassland livestock production cannot rely on the cost of pasture degradation. The stocking rate has to be based on the pasture production and it also has to be under the guidance of law. Changing management methods, development of grassland agriculture and optimization of the utilization of natural resources is the effective way of improving the reformation and development of grassland livestock production.
Native Grasses In The Pilbara Region, Australia; Resource Acquisition, Allocation And Growth,
2024
University of Western Australia
Native Grasses In The Pilbara Region, Australia; Resource Acquisition, Allocation And Growth, L J. Ingram, L T. Bennett, M A. Adams
IGC Proceedings (1977-2023)
Biomass production and nitrogen content of the native perennial grasses, Barley Mitchell grass (Astrebla pectinata ) and Kangaroo grass (Themeda triandra), were studied over the 1996 growing season. After 160 mm of rain, the biomass of T. triandra increased from 2 to 4 t/ha, while A. pectinata increased from 1.1 to 1.5 t/ha. N in aboveground biomass of T. triandra increased from 14.5 to 17 kg/ha and of A. pectinata from 8.5 to 10 kg/ha. A. pectinata leaves senesced quickly increasing the total amount of N in dead leaves. T. triandra senesced more slowly but dead leaves …
The Effect Of Different Winter Utilization Periods Of A C4 Subtropic Foggage On The Growth Of Weaners,
2024
NWADI P
The Effect Of Different Winter Utilization Periods Of A C4 Subtropic Foggage On The Growth Of Weaners, I F. Reckling, G.H J. Kruger
IGC Proceedings (1977-2023)
A significant (P<0.05) increase in lick consumption was found, as winter progressed, which was attributed to a significant decline in the quality (P<0.05) of Digitaria eriantha foggage. Harvested treatments resulted in a significant (P<0.05) decline in residual soil nitrogen levels compared to unharvested treatments. Losses, due to trampling, on average was 21.25%. It is advocated that Digitaria eriantha ought to be utilised in summer and is only suitable for maintenance if utilised in winter.
Leucaena Leucocephala As A Supplement For Goats On Tropical Pastures,
2024
Universidad del Zulia
Leucaena Leucocephala As A Supplement For Goats On Tropical Pastures, T Clavero, R Razz
IGC Proceedings (1977-2023)
A field experiment was conducted in the dryland farming area of Northwest Venezuela in order to evaluate three diets in grazing goats (pasture only; grazing pasture + 0.3 kg of commercial concentrate/ animal/d; grazing pasture + restricted grazing for 2 hours daily in Leucaena leucocephala) on milk production (mp) and milk composition (fat -f- and mineral concentration -mc-). The experiment was laid out as randomized block design. The data showed significant difference (P<0.05) between treatments. Milk production increased in 50 and 70% when goats had access to commercial concentrate or Leucaena graizing as well as grass pasture compared with the control treatment. Milk production in goats with access to Leucaena was insignificantly different than goats on concentrate. Treatments did not affect milk composition. The results suggest that Leucaena leucocephala can supply an adequate amount of nutrient with similar value to commercial concentrate for milk production in grazing goats.
The Effect Of Long-Term Grazing Treatments On The Establishment Of Woody Plants In A Southern African Savanna,
2024
University of the O.F.S
The Effect Of Long-Term Grazing Treatments On The Establishment Of Woody Plants In A Southern African Savanna, G N. Smit, N.F G. Rethman
IGC Proceedings (1977-2023)
Eight paddocks which were debushed to an open savanna during 1935/36 and subsequently grazed annually during different seasons by steers were surveyed after a period of 54 years. Though woody plants have increased in all the paddocks, regardless of the grazing treatment, the rate of woody plant establishment was notably higher in those paddocks that received a more intense annual grazing treatment. This effect was most noticeable in those paddocks of which the mean Animal Unit-grazing days ha-1 exceeded 100 days annually. These results confirm the existence of a positive linear relationship between the severity of the grazing treatment and …
Monitoring The Stabilization Of Semi-Arid Grassland In The Bridge Creek Watershed Of Central Oregon,
2024
BLM
Monitoring The Stabilization Of Semi-Arid Grassland In The Bridge Creek Watershed Of Central Oregon, R Demmer, L Andrews, B Keller
IGC Proceedings (1977-2023)
Using land exchanges the Bureau of Land Management (BLM) in central Oregon consolidated its land base in the Bridge Creek Watershed between 1987 and 1992 to obtain a 64,500 acre land block. The uplands had been grazed and the valley bottoms farmed since the middle 1800s. Due to improper grazing, primitive irrigation, fire suppression and juniper invasion, the native vegetation was sparse. Weeds were ubiquitous, and soils were eroded. The results of actions taken after baseline inventories of riparian and range communities were monitored. This feedback prompted further actions. Monitoring confirms that increasing native vegetation and decreasing erosion is stabilizing …
Evaluation Of The Chemical Composition Of Some Locally Available Acacia Seeds As Animal Feed In Botswana,
2024
Botswana College of Agriculture
Evaluation Of The Chemical Composition Of Some Locally Available Acacia Seeds As Animal Feed In Botswana, A A. Aganga, C M. Tsopito
IGC Proceedings (1977-2023)
Two separate studies were conducted using indigenous browse seeds. In the first study, seeds from nine locally available Acacia trees were analysed for proximate composition, fatty acid composition and in vitro dry matter digestibility. Nutrient composition of the seeds varied in crude protein from 12.52% for Acacia robusta to 21.82% for Acacia erubescens. Ash content ranged from 3.20% to 4.75%. The in vitro dry matter digestibility ranged from 46.00% for Acacia rehmanniana to 62.00% for Acacia erubescens. Fatty acids present in the seeds included palmitic, linoleic and oleic acids. The second study was to evaluate the influence of processing on …
The Influence Of Range Condition On The Hydrological Characteristics In A Semi-Arid Rangeland,
2024
University of the Orange Free State
The Influence Of Range Condition On The Hydrological Characteristics In A Semi-Arid Rangeland, H A. Snyman
IGC Proceedings (1977-2023)
Herbage production, water-use efficiency (i.e. above-ground phytomass production per unit of evapotranspiration), surface runoff, deep percolation, soil loss and soil organic matter content were determined on rangeland in three different ecological conditions, viz. poor, moderate and good, for 20 years. Hydraulic non-floating lysimeters were used to determine evapotranspiration (Et), soil evaporation (E) and deep percolation. Runoff and soil loss were recorded on runoff plots. Above-ground phytomass production, water-use efficiency, deep percolation and soil organic matter content decreased (P<0.01) when plant cover was reduced or range and soil condition declined. The dense plant cover of veld in good condition provides a situation in which surface runoff and soil loss rates are lower (P<0.01) than that from veld in poor condition.
Carbon Sequestration- Additional Environmental Benefits Of Forage In The Pfra Permanent Cover Program,
2024
Agriculture and Agri-Food Canada
Carbon Sequestration- Additional Environmental Benefits Of Forage In The Pfra Permanent Cover Program, G M. Luciuk
IGC Proceedings (1977-2023)
International concern about greenhouse gases and their impacts on climate change has added to the need for an understanding of carbon sequestered in agricultural soils. This paper evaluates the carbon sequestration potentials of the 522 000 hectares converted from annual cultivation to forages under the Prairie Farm Rehabilitation Administration’s (PFRA) Permanent Cover Program (PCP). The 15 000 PCP sites in the prairie provinces of Canada are matched to their dominant soil characteristics. Estimates of carbon losses due to annual crop cultivation are determined for these soil characteristics, and sequestration potentials under the permanent cover condition are presented. Estimates of societal …
Biomass Partitioning In Grasses Subjected To Defoliation,
2024
Volcani Center
Biomass Partitioning In Grasses Subjected To Defoliation, M Gutman, I Noy-Meir, D Pluda, S Rothman
IGC Proceedings (1977-2023)
Containerized plants of Perennial wild barley (Hordeum bulbosum) grown from corms and of Wild emmer wheat (Tritium diccocoides) grown from seeds, were grown in environmental conditions comparable to those encountered under field conditions. Both species were subjected to 3 defoliation frequencies ( once, twice and three times during the season) each at 3 different clipping heights (1, 2.5 and 5 cm above ground level ) plus a control treatment (10 treatments in all). Wild emmer wheat control plants had significantly higher cumulative total and reproductive biomass over all harvests than all clipped plants. Clipping height and …
Salt Tolerance In Herbage And Its Application To Greening The Desert,
2024
Tokyo University of Agriculture
Salt Tolerance In Herbage And Its Application To Greening The Desert, Y Maeda, T Otani, K Ogiwara, S Murai, H Takenaga
IGC Proceedings (1977-2023)
Canadian peat moss was used as water holding material and the efficacy of mixing the peat with the sand on water holding capacity of the sand, and the adaptability of alfalfa (AL), burmudagrass (BG), bahiagrass(BH), weeping lovegrass (WL) and Japanese lawngrass(JL) to dry and saline conditions were investigated. Without mixing peat, pF value of the sand did not change for 6 days after watering, but rose markedly up to 2.9 after 18 days. With mixing peat at the rate of 2% by the sand weight, the value did not change for 20 days, and rose gradually up to 2.5 on …
Some Improvable Points For Better Utilization Of Reed Canarygrass Cultivars In Japan,
2024
Tokyo University of Agriculture
Some Improvable Points For Better Utilization Of Reed Canarygrass Cultivars In Japan, T Otani, M Ito, Y Maeda, Y Kurihara
IGC Proceedings (1977-2023)
Relationships among growth stage, herbage quality, and dry matter accumulation of reed canarygrass cultivars were investigated in a rainy mountainous district of Japan. Fiber content accumulated during the primary growth correlated with some growth characters of this grass, especially with preferential culm expansion, so that total amount of cell wall constituents reached a remarkably high level about the time when culm/foliage (C/F) ratio in dry matter was elevated above 1.5. In aftermaths, whose early regrowth went on rather quickly, dry matter accumulation began to decline at the stage that C/F ratio of standing crop became ca. 1.0 and fiber content …
