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Articles 931 - 960 of 301768

Full-Text Articles in Physical Sciences and Mathematics

Preliminary Isozyme Studies On Chloris Gayana (Rhodes Grass), P A. York Aug 2024

Preliminary Isozyme Studies On Chloris Gayana (Rhodes Grass), P A. York

IGC Proceedings (1993-2023)

Horizontal starch gel electrophoresis of Chloris gayana (Rhodes grass) identified enzyme systems for use as selectable genetic markers and/or polymorphic loci for cultivllf differentiation, Most enzymes from crushed leaves of Rhodes grass showed anodal migration; but peroxidases exhibited Vllfiation in a multitude of anodal and cathodal bands. Glucose- 6-phosphate dehydrogenase and malate dehydrogenase had a single; locus-zone. Malic enzyme had one clear zone, but possibly another and a trace of cathodal activity, while phosphoglucose isomerase comprised two, designated PGl-1 and PGI-2, as did superoxide dismut115e (SOD-1 and SOD-2). Phosphoglucomutase had a clear fast and a fainter, slower zone-locus. 6-phosphogluconate dehydrogenase …

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Grassland Investigation And Mapping Using Remote Sensing In Northern China, Liu Fuyuan, Li Znegyuan, Han Jinaguoguez, Xia Jingxin Aug 2024

Grassland Investigation And Mapping Using Remote Sensing In Northern China, Liu Fuyuan, Li Znegyuan, Han Jinaguoguez, Xia Jingxin

IGC Proceedings (1993-2023)

A large area of grassland in north China is an important resource for animal production, The grassland vegetations of north China were investigated and mapped by means of remote sensing from 1986 to 1990, We adopted various multiple information and multitime phase satellite images which were taken to allow optical and computer processing for complicated cases and difficult areas of grassland classification, The grasslands were divided into 8 different types and 50 groups according to surface features of Landsat images, ecological environment and vegetation analysis, The warm shrub and herbosa grassland, which ls distributed mainly in the rocky mountainous regions, …

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Grazing Management For The Control Of Vulpia Spp. In Pastures, C E. Jones, R.D B. Whalley Aug 2024

Grazing Management For The Control Of Vulpia Spp. In Pastures, C E. Jones, R.D B. Whalley

IGC Proceedings (1993-2023)

The effect of strategic grating in spring and autumn on seed production, recruitment and seedling survival of Vulp/11 spp. was assessed in experiments at 2 sites near Armidale on the northern Tablelands of New South Wales. V11lpia spp. field populations in 1992 in autumn-grazed plots which had been heavily grazed in the previous spring were reduced 97.391, at Site 1 and 91,291, at Site 2 in comparison with similar plots which had not been grazed in the previous spring. These reductions were greater than could have been obtained by either winter cleaning or spraytopping with herbicide, the currently recommended management …

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Sustainability Of A Rocky Grassland Association Over Four Decades, K Torok, G Kosa Aug 2024

Sustainability Of A Rocky Grassland Association Over Four Decades, K Torok, G Kosa

IGC Proceedings (1993-2023)

The monitoring of vegetation changes Is essential for predicting the direction of future changes. Historic Braun-Blanquet type relev6s of a grassland association were resampled after 4 decades. Ordination techniques were applied to the joint data set. Important displacement of the relev6s was observed in the ordination space, though there is no complete separation of the historic and recent relev6s. No consistent change in species number, no decrease in diversity was experienced, The displacement of relev6s was the consequence of shif'l in the spectrum of life strategies of species: invasion of annuals, The cause of this shif'l may be the increased …

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Effect Of Excreta On Stolon Development Of White Clover Under Continuous Cattle Grazing, M I. Rebuffo, R Snaydon, J Morrison Aug 2024

Effect Of Excreta On Stolon Development Of White Clover Under Continuous Cattle Grazing, M I. Rebuffo, R Snaydon, J Morrison

IGC Proceedings (1993-2023)

The effects of cattle excreta on white clover growth in perennial ryegrass-white clover pastures were studied under continuous grazing. During 2 6-week periods in June-July and September-October. Caltle selectively grazed the sward where urine had been recently voided and subsequently grazed these areas more fequently than other areas, while grazing the sward adjacent to the dung pats less intensively than other areas. Despite differences in of herbage mass and light interception resulting from altered grazing patterns, dung did not affect the density of white clover (Trifolium repens L,) growing points or the number of branches per stolo1i in the …

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Allelopathic Effects Of Endophyte In Perennial Ryegrass Residues On Young Subterranean Clover Plants, F J. Snell, P E. Quigley Aug 2024

Allelopathic Effects Of Endophyte In Perennial Ryegrass Residues On Young Subterranean Clover Plants, F J. Snell, P E. Quigley

IGC Proceedings (1993-2023)

Earlier research in Australia and New Zealand has shown that legume growth and persistence may be reduced in the presence of perennial ryegrass (Lolium perenne L.) which frequently contains the endophyte Acreonium lolli Mechanisms to explain these effects need further elucidation. A pot experiment, conducted in a glasshouse, showed that a mulch of senescent perennial ryegrass, which frequently contained A. lolli, reduced the standard of nodulation, root length and shoot and root dry weight of 32-day-old subterranean clover (Trifolium subterranean L.) plants, compared with those grown with mulches which contained less endophyte. The growth of clover plants grown …

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Agronomic Behavior Of Binary Mixtures In Basque Country Pastures, M Oyanarte, C Bastida, M Rodriguez Aug 2024

Agronomic Behavior Of Binary Mixtures In Basque Country Pastures, M Oyanarte, C Bastida, M Rodriguez

IGC Proceedings (1993-2023)

The present work deals with the total yield and botanical composition of binary mixed pastures resulting from paired combinations of 8 grasses (Italian, perennial and hybrid ryegrass, cocksfoot, tall fescue, timothy, meadow softgrass and prairie grass) and 3 legumes (red clover, white clover and birdsfoot trefoil) with two levels of N, 160 and 320 kg/ha, during a 2-year field trial. In both years prairie grass was the most productive grass in the different combinations and its yield increased considerably with the high rate of N. Cocksfoot and timothy were slow to establish but in the second year they yielded well, …

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Establishing Alfalfa Without Tillage, D W. Koch Aug 2024

Establishing Alfalfa Without Tillage, D W. Koch

IGC Proceedings (1993-2023)

Establishing alfalfa (Medicago saliva L.) without prior tillage offers advantages over traditional methods in terms of reducing energy and labour requirements, erosion hazard and improving timeliness of operation. An economic advantage to the no-till method has been apparent in recent years. Alfalfa was seeded without prior tillage.after annual crops and into perennial sods. Alfalfa was no-till seeded into perennial sod with less than 10% of the energy and labour required by the conventional tillage method. Alfalfa no-till seeded less than 1 week after sod was treated with glyphosate, was less vigorous and yielded less the seeding year than alfalfa …

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Effect Of Manipulative Management Options On A Degraded Pasture Within The Astrebla Spp. Grazing Lands Of Western Queensland, J J. Bushell, J A. Reynolds, D C. Cowan, D G. Phelps, J A. Milson Aug 2024

Effect Of Manipulative Management Options On A Degraded Pasture Within The Astrebla Spp. Grazing Lands Of Western Queensland, J J. Bushell, J A. Reynolds, D C. Cowan, D G. Phelps, J A. Milson

IGC Proceedings (1993-2023)

A reduction in Aslrebla spp., and an increase in less palatable and less desirable forbs (Malvastmm americanum Psoralea cinerea), was identified as a problem in some paddocks of the Astrebla grazing lands of central western Queensland's clay soils. To determine possible rehabilitation for these pastures and assist the recovery of Astrebla spp,, a 2-year experiment was conducted near Muttaburra, Queensland (460 mm average annual rainfall), Six main treatments (nil, tine ripping, herbicide, slashing, fire, and a pioneering grass) were combined in a 6x2x2 split piot structure with grazed/not grazed and with additional Astrebla lappacea seed sown/not sown. Interim …

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Autumn Management Of Grass-Legume Pasture, D P. Belesky, J M. Fedders, A S. Laidlaw Aug 2024

Autumn Management Of Grass-Legume Pasture, D P. Belesky, J M. Fedders, A S. Laidlaw

IGC Proceedings (1993-2023)

Duration of autumn grazing may affect the long-term balance of grass and legume in a sward. Effects of early and late autumn closing dates were studied on productivity and morphology of orchardgrass (Dactylis glomerata) and white clover (Trifolium repens) in replicated grazed swards. Early-closed paddocks continued to accumulate herbage during autumn, resulting in greater winter senescence than late-closed paddocks. Spring-cut herbage mass was not affected by autumn management; however, late closing had significantly more clover than early closing. Early-closed paddocks were grass domlnanl, with few relatively large tillers and few clover growing points compared with late-closed …

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Changes In Productivity Associated With Replacement Of Heteropogon Cotortus By Aristida Species And Chrysopogon Fallax In The Savannas Of South East Queensland, F P. Wandera, P C. Kerridge, J A. Taylor, H M. Shelton Aug 2024

Changes In Productivity Associated With Replacement Of Heteropogon Cotortus By Aristida Species And Chrysopogon Fallax In The Savannas Of South East Queensland, F P. Wandera, P C. Kerridge, J A. Taylor, H M. Shelton

IGC Proceedings (1993-2023)

Heteropogon contortus-dominated rangelands, which cover 22 million ha, are the most important areas for beef production in northern Australia. Due to overgrazing, this dominant species ,is disappearing and is being replaced by unpalatable species such as Aristida and Chrysopogon in a patchy mosaic pattern. In a large graiing experiment· adjacent to the CSIRO Narayen research station: in south-east Queensland on granite country, patches dominated bf the unpalatable grasses comprised 24-32% of the area. Aristida-dominant and Chrysopogon-dominant patches had lower productivity (1000 and 650 kg/ha, respectively) than areas dominated by Heteropogon contorus (1850 kg/ha). It was estimated that a rangeland …

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Dynamics Of Stylosanthes Species In Mixed Pastures In A Marginal Environment, J G. Mcivor, C J. Gardener Aug 2024

Dynamics Of Stylosanthes Species In Mixed Pastures In A Marginal Environment, J G. Mcivor, C J. Gardener

IGC Proceedings (1993-2023)

The growth and population dynamics of Stylosanthes hamata cv. Verano and S. scabra cv. Seca were measured in mixed, oversown pastures at Hillgrove (AAR=535 mm) near Charters Towers. Over a 10-year period mean stylo yields ranged from 20 kg/ha to 1800 kg/ha. During the first 3 years Verano outyielded Seca but in the last 7 years Seca had greater yields. Plant density was greater for Verano lhan Seca during the early years but the situation was reversed in later years. The Seca plants lived longer than Verano plants and there was a greater proportion of perennial plants in the Seca …

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Distribution And Abundance Of Plant Species In Pastures And Rangelands, John G. Mcivor Aug 2024

Distribution And Abundance Of Plant Species In Pastures And Rangelands, John G. Mcivor

IGC Proceedings (1993-2023)

The competition-stress-disturbance (CSD) model of Grime (Plant strategies and vegetation processes, New York, John Wiley 1979) is used as the basis for discussing the forces that influence the distribution and abundan.ce. of plant species. Characteristics of plant strategies (competitive, ruderal and stress-tolerator) in both the established and regenerative phases are summarised. Pasture management can be viewed as the manipulation of competition, stress and disturbance. A number of pasture situations ( disturbance-diversity relationships, pasture degradation, weed invasion, management of abandoned farm land, species conservation) are analysed in ecological terms and the consequences for pasture management are outlined. The CSD model can …

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Aspects Of Interference Between Nodding Thistle (Carduus Nutans L.) And Pasture Grasses And Legumes, D A. Wardle, K S. Nicholson, A Rahman Aug 2024

Aspects Of Interference Between Nodding Thistle (Carduus Nutans L.) And Pasture Grasses And Legumes, D A. Wardle, K S. Nicholson, A Rahman

IGC Proceedings (1993-2023)

Nodding thistle (Carduus nutans L.) is an important weed species in New Zealand pastures. The available information on interactions between this species and forage grasses and legumes is summarised and discussed. Nodding thistle inhibits pasture productivity, and allclopathy is probably Important at inhibiting pasture at the later stages of its life cycle. Although, nodding thistle is most susceptible to inhibition by forage species early in its life cycle, a minimum pasture cover may be required for seedlings to establish. Nodding thistle therefore acts as a competitor only at the later stages of its development. Grasses arc both stronger at inhibiting …

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Effects Of Herbicides And Fertilizers On Ragwort (Senecio Jacobaea L.) In Hill Country Pastures, A Rahman, K S. Nicholson, D A. Wardle Aug 2024

Effects Of Herbicides And Fertilizers On Ragwort (Senecio Jacobaea L.) In Hill Country Pastures, A Rahman, K S. Nicholson, D A. Wardle

IGC Proceedings (1993-2023)

A 3-year study was conducted lo determine the influence of 2 herbicides (2,4-D and glyphosate) and 3 fertilisers (containing N, P or K), in conjunctiun with pasture renovation, on ragwort (Senecio jacobaea L.) populations and pasture productivity in a perennial ryegrass-white clover hill country pasture. Glyphosate-treated plots often contained higher ragwort numbers than 2,4-D treated plots, probably because the glyphosate treatment caused greater discontinuity of pasture. Both N and P fertilisers had a consistently strong beneficial effect on pasture, which resulted in substantial inhibition of ragwort populations. During the end of each of the first 2 years of the …

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Regeneration Of Themeda Triandra In Humid South African Rangelands, K Adams, J E. Danckwerts Aug 2024

Regeneration Of Themeda Triandra In Humid South African Rangelands, K Adams, J E. Danckwerts

IGC Proceedings (1993-2023)

Themeda triandra seeds were planted into undisturbed, burnt and tilled treatments in degenerate humid grassland. More seedlings emerged and survived on tilled soil than on the other two treatments. The plants on the tilled treatments were also larger (had more tillers with greater mass than the other two). The effect of tillage was attributed to removal of competition from undesirable competitors, which seems essential in the reintroduction of T. triandra into humid grasslands of South Africa.

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Effects Of The Fire Regime On Grassland And Savanna Rangelands In Southern Africa, Winston S.W Trollope Aug 2024

Effects Of The Fire Regime On Grassland And Savanna Rangelands In Southern Africa, Winston S.W Trollope

IGC Proceedings (1993-2023)

Fire is regarded as a natural factor of the environment in southern Africa and the effect of fire on rangeland depends upon the fire regime, i.e., type and intensity of fire and season and frequency of burning, The most common types of fire in grassland and savanna areas are surface fires burning either as head or back fires. Head fires have the least depressive effect on the recovery of the grass sward and cause high« topkill of stems and branches of trees and shrubs than back r1res, Fire intensity has no significant effect on the recovery of the grass sward …

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Sward Characteristics Of A Diploid And Tetraploid Cultivar Of Perennial Ryegrass As Measured By Different Sampling Techniques, J H. Neuteboom, E A. Lantinga, H Schlepers, L 'T Mannetje Aug 2024

Sward Characteristics Of A Diploid And Tetraploid Cultivar Of Perennial Ryegrass As Measured By Different Sampling Techniques, J H. Neuteboom, E A. Lantinga, H Schlepers, L 'T Mannetje

IGC Proceedings (1993-2023)

In a grazing experiment with monocultures of 2 perennial ryegrass (Lolium perenne L.) cultivars it was found that over a 6-year period the tiller density of the tetraploid Condesa was on average 27% lower than that of the diploid Wendy. The lower tiller density of Condesa went along with a more open sward structure and higher weed proportions after 6 years, Sward structure was suitably characterised by means of absence frequency estimations of rooted perennial ryegrass tillers from concentric sampling quadrats.

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Effect Of Localized And Epsidodic Nutrient Supplies And Salinity On Growth Of Selected Grass Species, M M. Wolfson, J Caetano Aug 2024

Effect Of Localized And Epsidodic Nutrient Supplies And Salinity On Growth Of Selected Grass Species, M M. Wolfson, J Caetano

IGC Proceedings (1993-2023)

The efficient use of non•uniform nutrient supplies may be an important component of plant nutrient relationships in soils, especially where inputs of available nutrients by mineralisation may be slow and unpredictable. The experiments reported here examined the effects of periodic supplies of nutrients as well as localised nutrient supplies on the growth of grass species which are common in cultivated soils and pastures. Most plants cannot produce significant yields when grown under saline conditions owing to the difficulty the plant has adjusting to the osmotic potential of the growth medium and its limited capacity to cope with accumulated c1· and …

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Analysis Of A Natural Pasture Of The Karst Region (North-East Italy) Under Chemical Fertilization, G Parente, R Ardiani, F Bozzo, M Onofrii, M Scimone, S Venerus Aug 2024

Analysis Of A Natural Pasture Of The Karst Region (North-East Italy) Under Chemical Fertilization, G Parente, R Ardiani, F Bozzo, M Onofrii, M Scimone, S Venerus

IGC Proceedings (1993-2023)

To characterise the vegetation changes in a natural pasture, a mineral fertilisation and a 4-year grazing test (1987-1990) were carried out on a typical karstic natural grassland, at that time not grazed by livestock and frequently devastated by fire. Mineral fertiliser and year-long animal grazing have modified the vegetation and seem not to have damaged the agro-ecosystem. An increase of the Arrhenatheretum species and, consequently, higher dry matter production, have been recorded, as well as an extension of the growth period and a greater quantity of grass during the summer. Animal performance has been quite satisfactory as the milk production …

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Effect Of Elevation On Vegetation In The Southern Alburz Chain, Iran, Masoud Mohammad-Aliha Aug 2024

Effect Of Elevation On Vegetation In The Southern Alburz Chain, Iran, Masoud Mohammad-Aliha

IGC Proceedings (1993-2023)

The effects of elevation on the vegetation composition of the southern rangelands (about 20 000 ha) of the Alburz Chain was studied. The attitudinal zones of the study area were located between 1200 and 3600 m asl. Twenty-three sites were selected alongside the attitudinal gradients (every 200 m change in height was allocated a substation). Twenty-one vegetation types were distinguished and 3 ecological sites (stations) selected. Also some grasses alongside the study area have been considered.

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Assessing The Productivity Of Pastures In The Central Highlands Region Of Queensland, Australia, J Willcocks, P Filet Aug 2024

Assessing The Productivity Of Pastures In The Central Highlands Region Of Queensland, Australia, J Willcocks, P Filet

IGC Proceedings (1993-2023)

A sustainable grazing industry requires careful management of pastures. This study measured the growth potential and productivity of different pasture types in the Central Highlands region of Queensland to develop recommendations on stocking rates which are sustainable in the long term. The most productive pasture measured, buffet grass (Cenchrus clliaris) is generally used for fattening prior to sale to the meatworks. The least productive, a mixed native pasture under a eucalypt forest, is generally used for maintaining breeding stock. Forest Mitchell grass (Bothrioclrloa ewartiana) has intermediate levels of productivity and is used for both breeding and …

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Seedling Emergence From Buried Seed In Unsown And Oversown Hill Pasture, M E. Wedderburn, W J. Pengelly, L A. Greaves Aug 2024

Seedling Emergence From Buried Seed In Unsown And Oversown Hill Pasture, M E. Wedderburn, W J. Pengelly, L A. Greaves

IGC Proceedings (1993-2023)

Seedling recruitment from buried seed was measured in hill country after the resident vegetation was suppressed or killed using herbicide, and either Yatsyn ryegrass, hill ryegrass or a low fertility grass mix was oversown. Unsown plots serves as a control. The total number of seedlings emerging per m2 was similar for all treatments but differences between treatments occurred in the species composition of seedling populations. Ryegrass seedling density in sown plots was 3 times that in unsown plots and white clover seedling numbers were 6 times greater. Other grasses were present in numbers equivalent to sown ryegrass. Subterranean clover and …

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Adaptation Of Grassland For Recreational And Amenity Use, R J. Gibbs, K W. Mcauliffe, R W. Brougham Aug 2024

Adaptation Of Grassland For Recreational And Amenity Use, R J. Gibbs, K W. Mcauliffe, R W. Brougham

IGC Proceedings (1993-2023)

Adaptation of grassland for intensive sport and recreational use introduces constraints not normally experienced under agricultural pasture production. For example, turfgrass is expected to grow in deliberately compacted soils and structureless, inert sands. It is also expected to provide a surface for sports as diverse as golf and horse racing. This paper examines aspects of turfgrass management that differ from agricultural pasture production. These aspects include the ability of turf grass to withstand intensive wear, its ability to produce a dense, low growing and even sward and the specific drainage and playing quality demands of different sports. The key role …

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Hypogene Speleogenesis In Carbonates By Cooling Hydrothermal Flow: The Case Of Mt. Berenike Caves, Israel, Roi Roded, Boaz Langford, Einat Aharonov, Piotr Szymczak, Micka Ullman, Shemesh Yaaran, Boaz Lazar, Amos Frumkin Aug 2024

Hypogene Speleogenesis In Carbonates By Cooling Hydrothermal Flow: The Case Of Mt. Berenike Caves, Israel, Roi Roded, Boaz Langford, Einat Aharonov, Piotr Szymczak, Micka Ullman, Shemesh Yaaran, Boaz Lazar, Amos Frumkin

International Journal of Speleology

The Berenike hypogenic cave system near Lake Kinneret, Israel, provides a valuable case study for investigating the recently proposed Confined-Cooling-Flow (CCF) speleogenesis model. Field and speleological surveys, along with existing research, are used to provide a thorough analysis. The CCF model relies on a simple thermo-hydro-chemical scenario, involving the rise of CO2-rich hydrothermal fluids discharging into a confined layer. The cooling of these CO2-rich fluids turns them into aggressive solutions due to the inverse relation between temperature and solubility of carbonates (retrograde solubility). Previous geochemical and numerical analyses of the CCF model predict localized and persistent dissolution and speleogenesis on …

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Spatio-Temporal Changes In The Gravity And Post-Mining Seismic Activity In Abandoned Deep Coal Mine Kazimierz-Juliusz During Flooding, Andrzej Kotyrba, Łukasz Kortas, Sławomir Siwek Aug 2024

Spatio-Temporal Changes In The Gravity And Post-Mining Seismic Activity In Abandoned Deep Coal Mine Kazimierz-Juliusz During Flooding, Andrzej Kotyrba, Łukasz Kortas, Sławomir Siwek

Journal of Sustainable Mining

The flooding of an underground hard coal mine, resulting in the filling of post-mining voids (workings and goafs) and the repeated saturation of pore and interstitial spaces of the adjacent rock with water, change the mass and its distribution in the near-surface part of the earth’s crust. This process is slow and lasts many years. As a result, the local gravity field undergoes dynamic changes. It depends on the surface morphology and the density of geological strata, which is related to their water content. Changes in the local gravity field can be monitored by periodic gravity surveys performed in the …

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Development And Optimization Of A 1-Dimensional Convolutional Neural Network-Based Keyword Spotting Model For Fpga Acceleration, Trysten E. Dembeck Aug 2024

Development And Optimization Of A 1-Dimensional Convolutional Neural Network-Based Keyword Spotting Model For Fpga Acceleration, Trysten E. Dembeck

Masters Theses

Spoken Keyword Spotting (KWS) has steadily remained one of the most studied and implemented technologies in human-facing artificially intelligent systems and has enabled them to detect specific keywords in utterances. Modern machine learning models, such as the variants of deep neural networks, have significantly improved the performance and accuracy of these systems over other rudimentary techniques. However, they often demand substantial computational resources, use large parameter spaces, and introduce latencies that limit their real-time applicability and offline use. These speed and memory requirements have become a tremendous problem where faster and more efficient KWS methods dominate and better meet industry …

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A Measurement Of The Differential Drell-Yan Cross Section As A Function Of Invariant Mass In Proton–Proton Collisions At √ S = 13 Tev, William Robert Tabb Aug 2024

A Measurement Of The Differential Drell-Yan Cross Section As A Function Of Invariant Mass In Proton–Proton Collisions At √ S = 13 Tev, William Robert Tabb

Dissertations and Doctoral Documents from University of Nebraska-Lincoln, 2023–

The Drell-Yan process, a crucial mechanism for producing lepton pairs in highenergy hadron collisions, serves as an essential probe for testing the Standard Model of particle physics. This dissertation presents a comprehensive measurement of the differential cross section with respect to the invariant mass of the lepton pairs, utilizing data collected by the CMS experiment at CERN from 2016 to 2018. Cross sections are essential for refining our understanding of parton distribution functions and the underlying quantum chromodynamics processes, thereby providing constraints on theoretical predictions. In this analysis, the cross sections are compared to theoretical models and simulations, offering new …

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The Product Of Science, Rolf A.E Mueller Aug 2024

The Product Of Science, Rolf A.E Mueller

IGC Proceedings (1993-2023)

The relationships between agricultural science, invention, production and consumption are conventionally considered in a hierarchical model with consumption at the basis and science at the pinnacle of the hierarchy. -Two important shortcomings of that model as a basis for organising and manag\ng agricultural research are identified. First, the model does not specify how the direction and intensity of research Is guided in the absence of markets for the outputs from research. Second, the model does not identify the flows of specific information from the consumption and agricultural production sphere to the research sphere where such information is crucial for the …

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From Technology Transfer To Resource Management, Janice Jiggins Aug 2024

From Technology Transfer To Resource Management, Janice Jiggins

IGC Proceedings (1993-2023)

Six models of technological innovation are examined. The implications for the roles and functions of research and extension, and of agricultural education systems, are analysed. The models are assessed against issues of gender, natural resource management and poverty, with consideration of who pays, and who benefits. The conclusion is drawn that the Transfer of Technology model is not a generalisable model to all circumstances, clients and policy goals. Client-driven systems and participatory approaches which build partnerships among researchers, extensionists, producers and other users of grassland landscapes, can be more effective and efficient.

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