Effects Of Cutting Height On Yield And Quality Of Five Napier Cultivars,
2024
Royal Veterinary and Agricultural University
Effects Of Cutting Height On Yield And Quality Of Five Napier Cultivars, S T. Jorgensen, S Tudsri, A Pookpakdi, O Stolen
IGC Proceedings (1977-2023)
Results of this experiment revealed that dry matter yield of five Napier grass species increased with higher stubble and that a delay in closing date had produced a negative effect on regrowth for the following season, especially, when low cutting height had been imposed. The nitrogen and phosphorus percentage in leaf and stem materials were not affected by cutting height. Potassium percentage and NDF% were lower for herbage with 0 cm cutting height compared to 30 cm cutting. Among the different cutting intensities, 20 cm and 30 cm cutting height can be recommended through the growing season.
Effects Of Grazing And Mowing On Leymus Chinensis Grassland In The Songnen Plain Of Northeastern China,
2024
Northeast Normal University
Effects Of Grazing And Mowing On Leymus Chinensis Grassland In The Songnen Plain Of Northeastern China, R Z. Wang, E A. Ripley
IGC Proceedings (1977-2023)
Effects of mowing and grazing on a Leymus chinensis grassland in the Songnen plain of northeastern China were studied using eight replicates of four grazing and mowing treatments. Canopy cover and biomass of the dominant species (L. chinensis) were lower, and cover of the halophyte Suaeda corniculata higher, on grazed than ungrazed; ungrazed plots showed a response to mowing, but not grazing; species diversity increased with grazing and mowing. This study found dissimilar effects of grazing and mowing on plant populations, canopy biomass and structure in L. chinensis grassland. Possible interactions between the principal disturbances on the grassland are …
Overgrazing Impact Upon Rangeland Ecosystems Of Kazakstan Deserts,
2024
Republic of Kazakstan
Overgrazing Impact Upon Rangeland Ecosystems Of Kazakstan Deserts, K Karibayeva
IGC Proceedings (1977-2023)
Vegetation dynamics trends are studies in connection with natural and human-induced factors. Interrelation of rangeland ecosystems with climate and grazing type is revealed. Degression, demutation and dynamics regulation diagrams are given for different conditions of use. Some quantitative and qualitative criteria were elaborated for rangeland ecosystems assessment. Ecosystem degradation indicators were identified, methods were elaborated for making subject maps for environmental assessment and sustainable management of grasslands. A method of seasonal cartographic rangeland cadastre was elaborated by the example of Volga - Ural sands on the basis of the map (S. 1:500,000)
Forage Quality Of 'Matua' Bromegrass (Bromus Wildenowii),
2024
Western Kentucky University
Forage Quality Of 'Matua' Bromegrass (Bromus Wildenowii), L G. Brown, J K. King
IGC Proceedings (1977-2023)
Research on forage quality of ‘Matua’ prairiegrass (Bromus wildenowii) is limited in Kentucky. Due to hot summers, mild winters and a 200-day long growing season in Kentucky, quality as well as management practices may differ from those reported in research from other climates. The objective of this study was to evaluate the forage quality of cool-season grasses including Matua, grazing bromegrass (Bromus stamineus), smooth bromegrass (Bromus inermis), tall fescue (Festuca arundinacea) and orchardgrass (Dactylis glomerata). The experiment was conducted in the field and greenhouse. Four harvests were obtained from each. Quality analyses …
Productivity Of Pasture Consisting Of Both Unimproved And Improved Areas In Aso Region Of Kyushu District,
2024
Kyushu Tokai University
Productivity Of Pasture Consisting Of Both Unimproved And Improved Areas In Aso Region Of Kyushu District, C Okamoto, K Kabata, K Tsuji, M Kikuchi
IGC Proceedings (1977-2023)
Productivity of pasture consisting of both unimproved and improved areas was investigated in terms of conversion efficiency of solar energy into products and nutrient intake of animal. It was shown that animal production is mainly supported by the improved area in spring and late-autumn while the production is supported together by both areas in summer by reasons of increases in productivity of the unimproved area and productive depression in the improved area. CP/DE balance of grazed herbage was close to the requirement ofthe animal in the case where the unimproved area was grazed with the improved area rather than in …
Grassland Productivity In The Indian Himalaya And Performance Of Introduced Temperate Forage Species In Cold And Semi-Arid Environment,
2024
University of Horticulture & Forestry
Grassland Productivity In The Indian Himalaya And Performance Of Introduced Temperate Forage Species In Cold And Semi-Arid Environment, J R. Sharma, A N. Ghosh
IGC Proceedings (1977-2023)
Grasslands in the Himalayan ranges, particularly in the middle altitudes, are over-exploited by both sedentary and nomadic flocks. No systematic studies have been made to assess the productivity and carrying capacity of these grasslands so that suitable improvement measures could be adopted. A study conducted in the Shimla district of Himachal Pradesh (HP) at 2092, 2400 and 2895 meters above mean sea level (amsl) and varying soil conditions, showed that protection alone increased dry matter production between 9 and 188% over a three year period and average production in the third year from lower to higher altitude grasslands was 101.1, …
Perception Of Rangeland By Herders In Northern Cameroon,
2024
Universite de Dschang
Perception Of Rangeland By Herders In Northern Cameroon, E Tedonkeng Pamo, P Scholte
IGC Proceedings (1977-2023)
Range scientists have always had the mistaken idea that herders cannot appraise, characterize or assess the state of their rangeland or range resource. From observations made in northern Cameroon, it appears that herders know the pastoral environment in which they operate probably better than many range scientists. They do not seem to have a good idea on range trends. However, from their pattern of range utilization over time it is possible to have an assessment of the state and trend of rangeland. A wide range of information on the pastoral knowledge of rangeland is needed to develop a sustained range …
Nutrient Content Of Saskatchewan Native Range Plants,
2024
Grazing and Pasture Technology Program, Regina, Canada
Nutrient Content Of Saskatchewan Native Range Plants, Zoheir Abouguendia
IGC Proceedings (1977-2023)
This study reports on the nutrient content and digestibility of five cool-season grasses common in the Mixed-Prairie Ecoregion of Saskatchewan, Canada: (1) green needlegrass (Stipa viridula Trin.); (2) needle-and-thread (Stipa comata Trin & Rupr.); (3) western porcupinegrass (Stipa curtiseta (Hitchc.) Backworth); (4) northern wheatgrass (Agropyron dasystachyum (Hook.) Scribn.); and (5) western wheatgrass (Agropyron smithii Rydb.). Plant material was collected monthly and analyzed for invitro organic matter digestibility ( IVOMD), crude protein (CP), P, Ca, ADF and NDF. All species showed similar intra-seasonal pattern in the various parameters studied and no species x month interactions were …
Negative Hypergeometric Series And Taylor's Power Law In Occurrence Of Plant Populations In Semi-Natural Grassland In Japan,
2024
Ibaraki University
Negative Hypergeometric Series And Taylor's Power Law In Occurrence Of Plant Populations In Semi-Natural Grassland In Japan, M Shiyomi, T Egawa, Y Yamamoto
IGC Proceedings (1977-2023)
Attempts were made to determine whether the spatial distribution of the plant species composing vegetation of a semi-natural grassland is heterogeneous, using negative hypergeometric series (NHG) and Taylor’s power law (TPL). The occurrence of each species was observed, in an area of the grasslands, using 100 quadrats with a size of 50 cm x 50 cm, each of which was divided into 4 small quadrats with an area of 25 cm x 25 cm. For all species dominating in the grassland, good fits to the NHG and TPL were obtained. Species which grow stolons, rhizomes and tillers for propagation such …
Recultivation And Revitalization Of Karst's Regions With Sheep And Goats As A Tool,
2024
University of Ljubljana
Recultivation And Revitalization Of Karst's Regions With Sheep And Goats As A Tool, M Pogacnik, P Juntes, D Kompan, T Vidrih, M Kotar
IGC Proceedings (1977-2023)
The main goal of our project is to revitalize abandoned karstic regions on the principles of silvopastoral systems based on traditional husbandry of goats and sheep and by causing minimal disturbances to the nature. Results of our two year experiment show positive effects on land cleaning and quantity and quality of the turf. However, restriction of animals to a fenced area, where the feed is of a lesser quality also has negative effects on the animals.
Introduction Of White Clover In Native Grasslands Of Bhutan-Impact, Potential, And Problems,
2024
RNR-Jakar
Introduction Of White Clover In Native Grasslands Of Bhutan-Impact, Potential, And Problems, W Roder, K Wangdi, P Gyamtsho
IGC Proceedings (1977-2023)
Important genera of native grass species common to the grasslands of Bhutan include: Schizachyrium, Arundinella, Agropyron, Agrostis, Bromus, and Helictorichon. White clover was first introduced to the country in 1970. White clover introduction and application of P increased dry matter production of native grasslands from <2 t ha-1 to >10 t ha-1. In the elevation range ,2000-3500 m white clover is the best fodder species for improving existing grassland. Fast expansion of the species through adoption by farmers spreading by grazing animals has caused some panic and demands for a reassessment of its potential.
Mountain Meadow Response To Riparian Grazing Strategies In Western Usa,
2024
USDA, Agricultural Research Service
Mountain Meadow Response To Riparian Grazing Strategies In Western Usa, W P. Clary, J W. Kinney
IGC Proceedings (1977-2023)
The purpose of this grazing study was to examine the response of a mountain meadow riparian system to different levels of livestock use in late June. Six pastures were used to evaluate three levels of grazing. Over an 8-year period there was a general trend of increased plant species and biomass. The largest increases in species number occurred in pastures receiving the most grazing use. The opposite was true for plant biomass. Total plant cover decreased on all dry meadows, but increased on grazed streamside locations. Shrub cover, including streamside willows, increased under all grazing treatments. Streambank stability increased and …
Persistence Of Cheatgrass (Bromus Tectorum) Amid Bunchgrass/Shrub Steppe Communities,
2024
USDA, Agricultural Research Service
Persistence Of Cheatgrass (Bromus Tectorum) Amid Bunchgrass/Shrub Steppe Communities, S B. Monsen, N L. Shaw
IGC Proceedings (1977-2023)
Semiarid bunchgrass/shrub steppe communities throughout the Intermountain region were degraded by early livestock grazing and invasion of annual weeds. Patterns of secondary succession were investigated through establishment and maintenance of four exclosures on granitic soils in south-central Idaho. Species composition and plant cover were estimated periodically in grazed and protected areas at each site from 1930 to 1977. Cheatgrass (Bromus tectorum), an alien invader, occupied the sites initially, declining between 1933 and 1937 during a prolonged drought, and reappearing erratically after 1940. Perennial grasses recovered slowly in protected areas, requiring more than 45 years to increase in cover …
Animal-Plant Interactions In An Atriplex Canescens Dominant Community Browsed By Cattle,
2024
Instituto Nacional de Tecnologia Agropecuaria
Animal-Plant Interactions In An Atriplex Canescens Dominant Community Browsed By Cattle, A F. Cibils, D M. Swift, R H. Hart
IGC Proceedings (1977-2023)
Atriplex canescens is a relatively widespread shrub in rangelands of the western United States,with a longstanding reputation as a valuable browse resource for ruminants. The breeding system of tetraploid populations has been extensively studied both in common gardens and in natural populations. However, browser-driven alterations of shrub sex ratios, and the probable mechanisms involved in such processes, have received relatively little attention in these populations. We report results from a preliminary study conducted in a stand of A. canescens at a site on the shortgrass steppe. Numbers of young shrubs decreased with increasing shrub density. Sex ratios did not differ …
An Examination Of Dry Weight Rank And Comparative Yield Techniques For Grasslands Production Estimation,
2024
University of Tehran
An Examination Of Dry Weight Rank And Comparative Yield Techniques For Grasslands Production Estimation, H Arzani, G W. King
IGC Proceedings (1977-2023)
Currently used method of dry matter yield estimation was tested compared with yield estimation from cover measurement using clipped data as an index. The dry weight rank (DWR) method was able to show variations within and between sites in different seasonal conditions. However it was less accurate than other techniques and possibly subject to personal bias.
Application Of Remote Sensing (Landsat Tm Data) For Vegetation Parameters Measurement In Western Divisions Of Nsw,
2024
University of Tehran
Application Of Remote Sensing (Landsat Tm Data) For Vegetation Parameters Measurement In Western Divisions Of Nsw, H Arzani, G W. King
IGC Proceedings (1977-2023)
The capability of Landsat (TM) data for vegetation parameters estimation was examined. Suitable vegetation indices were selected for arid and semi-arid areas. The possibility of accurate estimation of cover and yield of group of species was found.
Effect Of Nitrogen On The Reserve Nutrients Of Rhizomes And Their Relation To Shoot Regrowth In Miscanthus Floridulus,
2024
Taiwan Livestock Institute
Effect Of Nitrogen On The Reserve Nutrients Of Rhizomes And Their Relation To Shoot Regrowth In Miscanthus Floridulus, Y C. Wang, M L. Lee
IGC Proceedings (1977-2023)
A 3-week-treatment of nitrogen dressings and of shoot cuttings were conducted on Miscanthus floridulus before the harvest. The nitrogen dressing increased the fresh weight and dry matter of the plants, but did not increase the plant height and shoot number. The reserved nutrients, especially the sugars and starch in the rhizomes were decreased by the cut treatments. Crude protein in the rhizomes was increased with the nitrogen amounts applied, though the carbohydrates were decreased. The decrease in reserved nutrients caused the growth inhibition of new shoots, and the more the reserved nutrients decreased the more severely was the growth inhibited. …
Grassland Mapping Units In The Flooding Pampa (Argentine),
2024
Universidad Nacional de Lomas de Zamora
Grassland Mapping Units In The Flooding Pampa (Argentine), S P. Debelis, A A. Bozzo
IGC Proceedings (1977-2023)
A thematic map of grassland has been drawn up using studies carried out at farm level as a starting point, correlating soils and specie group through significant parameters that condition their presence. The work method included the analysis of a geomorphologically homogeneous area through cartography and aerial photography. An elemental unit of the landscape was studied in detail with a pattern repeated all over the subregion, with soil samples at specie group level. Hidromorphism and variable alkalinity and saline patches are present in all profiles, gramineous, juncaceous, cyperaceous and forbs linked to the problems of soil already mentioned. A system …
Improvement Of Subtropical Native Grasslands With The Introduction Of Forage Species And Phosphorous Fertilizers,
2024
Universidade Federal do Parana
Improvement Of Subtropical Native Grasslands With The Introduction Of Forage Species And Phosphorous Fertilizers, M N. Baby, S.B C. Lustosa, A Moraes, A.C V. Motta, R L. Stanger
IGC Proceedings (1977-2023)
The experiment took place in Guarapuava-Brazil, from May 1994 to January, 1996 to evaluate the improvement of a subtropical native grassland by the introduction of species and phosphate fertilization. It was observed that for the higher dose applied there occurred an increase over the production of dry matter and crude protein production and absorption of P and K in the plant. A response was not found to the 180 kg P2O5/ha application probably because of the high capacity of soil adsorption, the method of fertilizer application, non favorable climatic conditions and liming interference. The single superphosphate-SS application was superior to …
Manipulation Of Botanical Composition Of Native Pastures By Grazing In Temperate South-East Australia,
2024
NSW Agriculture
Manipulation Of Botanical Composition Of Native Pastures By Grazing In Temperate South-East Australia, D L. Garden, D A. Friend, P M. Dowling, G M. Lodge
IGC Proceedings (1977-2023)
Historical evidence indicates that substantial changes have occurred in the botanical composition of native pastures in temperate southeast Australia as a result of grazing by sheep and cattle. However, the resulting pastures now appear to be relatively stable and there has been limited success in changing composition experimentally. This paper reports the results of experiments conducted at four locations in south-east Australia designed to increase the proportion of desirable species in native pastures by grazing management.
