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Articles 4891 - 4920 of 14771

Full-Text Articles in Agricultural Science

High Elevation Grasslands As A Crucial Resource To Ranchers Of Northern New Mexico, A. M. Mcsweeny, Carol Raish Aug 2023

High Elevation Grasslands As A Crucial Resource To Ranchers Of Northern New Mexico, A. M. Mcsweeny, Carol Raish

IGC Proceedings (1977-2023)

High-elevation grasslands of northern New Mexico (NM), located at the southern tip of the Rocky Mountains in the western United States, are a crucial resource for small-scale, family-owned ranches. Due to evolution of land acquisition in northern New Mexico, many of these lands are in public ownership, and ranchers must now rely upon government-managed grazing allotments for pasturing their livestock. Regulations and management decisions governing these lands, along with competition for use (e.g. recreation), can significantly affect the viability and survival of ranching throughout the area (Raish & McSweeney, 2003).

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Avenues For Enhancing Traditional Livelihoods From Grasslands: Income Diversification Among Pastoral Women’S Groups In Southern Ethiopia, S. Desta, D. L. Coppock, S. Tezera, G. Gebru Aug 2023

Avenues For Enhancing Traditional Livelihoods From Grasslands: Income Diversification Among Pastoral Women’S Groups In Southern Ethiopia, S. Desta, D. L. Coppock, S. Tezera, G. Gebru

IGC Proceedings (1977-2023)

The rangelands of Africa remain home to millions of people who try to make a living by raising livestock on natural forage. Recent increase in human and livestock populations, however, along with a lack of economic development, has relegated many people to poverty and vulnerability. The semi-arid Borana Plateau of southern Ethiopia is a case in point. About 250,000 people herd one million head of livestock there. Thousands of animals die in periodic droughts and people are food insecure. It has been proposed that one way to better manage risk in this system is through economic diversification to reduce vulnerability …

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Pastures From Space - Application Of Satellite-Derived Pasture Predictions Improve The Profitability Of Australian Sheep Producers, S. G. Gherardi, L. Anderton, J. Sneddon, Chris Oldham, G. Mata Aug 2023

Pastures From Space - Application Of Satellite-Derived Pasture Predictions Improve The Profitability Of Australian Sheep Producers, S. G. Gherardi, L. Anderton, J. Sneddon, Chris Oldham, G. Mata

IGC Proceedings (1977-2023)

Pastures from Space, a collaborative program between CSIRO Livestock Industries and the Western Australian state Departments of Agriculture and Land Information, has developed the capacity to measure both the biomass and growth rate of annual pasture in the winter rainfall regions of southern Australia using satellite images (Edirisinghe et al., 2002). Producer groups were set up to pilot test the delivery of satellitederived pasture growth rate (PGR, kg dry matter/hectare.day) and biomass (feed on offer or FOO, kg dry matter/hectare) predictions for paddocks on individual farms in Western Australia. This paper reports on the value to Australian sheep producers …

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Diagnosing Nitrogen, Phosphorous And Potassium Status Of Natural Grassland In The Presence Of Legumes, C. Jouany, P. Cruz, J. P. Theau, M. Duru Aug 2023

Diagnosing Nitrogen, Phosphorous And Potassium Status Of Natural Grassland In The Presence Of Legumes, C. Jouany, P. Cruz, J. P. Theau, M. Duru

IGC Proceedings (1977-2023)

In most temperate areas, sustainable management of grassland ecosystems has to deal with evaluation and management of N, P and K resources. For this purpose, appropriate diagnostic systems are needed in order to manage fertilisation accordingly. The nutrient index method based on nutrient concentrations in plant tissues relative to the degree of growth has been developed; it relies on critical curves which serve for diagnostic: for N, the critical curve gives the optimum N concentration for different levels of biomass accumulation in swards, for P and K optimum concentrations are a linear function of sward N concentration (Duru & Thélier-Huché, …

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Fertiliser Responses And Soil Test Calibrations For Grazed Pastures In Australia, C. J. P. Gourley, A. Melland, K. I. Peverill, P. Strickland, I. Awty, J. M. Scott Aug 2023

Fertiliser Responses And Soil Test Calibrations For Grazed Pastures In Australia, C. J. P. Gourley, A. Melland, K. I. Peverill, P. Strickland, I. Awty, J. M. Scott

IGC Proceedings (1977-2023)

On-farm management of fertiliser is of major economic significance to the Australian grazing industries, based on expenditure on fertiliser and higher farm productivity that fertiliser use supports. However the application of fertiliser has traditionally been an inexact and inefficient process (Peverill et al. 1999) and there is increasing pressure for nutrient losses from agriculture to be minimised. The improved adoption and application of tools like soil testing can make substantial improvements in nutrient use efficiency but interpretation needs to be based on the best available information. This paper reports on the collation of current and historical experimental data relating …

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Potential For Forecasting Uk Summer Grass Growth From The North Atlantic Oscillation, P. S. Kettlewell, J. Easey, P. D. Hollins, T. Martyn, D. B. Stephenson Aug 2023

Potential For Forecasting Uk Summer Grass Growth From The North Atlantic Oscillation, P. S. Kettlewell, J. Easey, P. D. Hollins, T. Martyn, D. B. Stephenson

IGC Proceedings (1977-2023)

The North Atlantic Oscillation (NAO) is a large-scale atmospheric circulation pattern which is well-known to influence the UK winter climate (Wilby et al., 1997). Recently, it has been shown that the winter NAO also affects summer rainfall in the UK (Kettlewell et al., 2003). Since water supply is an important limitation to summer grass growth in many parts of the UK, the winter NAO may influence summer growth. The objective of this study was to test the hypothesis that there is a relationship between the winter NAO and summer grass growth using data from reference plots at North …

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Modelling Grass Productivity In The Brazilian Amazon, C. E. P. Cerri, K. Paustian, C. C. Cerri, F. F. C. Mello, M. Bernoux, K. Coleman, E. Milne Aug 2023

Modelling Grass Productivity In The Brazilian Amazon, C. E. P. Cerri, K. Paustian, C. C. Cerri, F. F. C. Mello, M. Bernoux, K. Coleman, E. Milne

IGC Proceedings (1977-2023)

The Amazon Basin covers an area of 7 million km2, and the central part is almost entirely located within Brazilian territory. This region has the highest rates of deforestation in the world, and the total area deforested now exceeds 600,000 km2. Cattle pasture represents the largest single use (about 70%) of this once-forested land in most of the Brazilian Basin, with an estimated area of 20 million hectares. Our main objective was to simulate grass productivity in different forest to pasture chronosequences within the Brazilian Amazon.

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Simulation Of Lablab Pastures, Jacqueline O. Hill, M. J. Robertson, A. M. Whitbread, B. C. Pengelly Aug 2023

Simulation Of Lablab Pastures, Jacqueline O. Hill, M. J. Robertson, A. M. Whitbread, B. C. Pengelly

IGC Proceedings (1977-2023)

The potential of legume-based pastures to address declining soil nitrogen on marginal cropping soils is increasingly recognised in northern Australia, as such there is a need for cost benefit analysis of pastures and crops in a mixed farming system. In highly variable rainfall environments, biophysical modelling may be the best way of identifying and quantifying interactions with mixed crop-livestock systems on a seasonal basis. This paper describes a case study where both animal productivity and lablab pasture production is simulated. Lablab (Lablab purpureus) is an annual tropical legume widely used as a short-term legume phase in crop-pasture rotations, …

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A Herbage Growth Model For Different Types Of Natural Grassland, J. Viégas, M. Duru, P. Cruz, J. P. Theau, P. Ansquer, C. Ducourtieux Aug 2023

A Herbage Growth Model For Different Types Of Natural Grassland, J. Viégas, M. Duru, P. Cruz, J. P. Theau, P. Ansquer, C. Ducourtieux

IGC Proceedings (1977-2023)

The aim of this work was to extend existing growth models established for pure stands to a wide range of grassland communities. For this purpose we built a simple growth model, including sub-models for radiation interception and use. Parameters for the effect of nutrient rates (N, P) and defoliation regimes were based on a plant trait database. Senescence and reproductive processes were particularly considered because of their importance in late spring growth. The model makes it possible to simulate the daily biomass production as a function of both environmental factors and the functional type of the dominant species in the …

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Variation Of Ldmc And Sla Relationship Between Growth Forms In Natural Grasslands, J. Viégas, P. Cruz, J. P. Theau, C. Jouany, P. Ansquer, R. Al Haj Khaled, O. Therond, M. Duru Aug 2023

Variation Of Ldmc And Sla Relationship Between Growth Forms In Natural Grasslands, J. Viégas, P. Cruz, J. P. Theau, C. Jouany, P. Ansquer, R. Al Haj Khaled, O. Therond, M. Duru

IGC Proceedings (1977-2023)

In agro-ecological studies, there is a growing interest in measuring both leaf dry matter content (LDMC) and specific leaf area (SLA). This interest lies on the fact that leaf traits are linked to gradients of environmental factors and ecosystem functions. Working with three contrasting wild species, Garnier et al. (2001) proposed a model linking these two traits. The model shows a relatively simple non linear and negative correlation between LDMC and SLA. Nevertheless, none of the species used to build the model were grasses (GRA) or forb rosettes (ROS = i.e. dicotyledonous with large entire leaves and absence of …

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Adapting The Cropgro Model To Predict Growth And Perennial Nature Of Bahiagrass, S. J. Rymph, K. J. Boote, J. W. Jones Aug 2023

Adapting The Cropgro Model To Predict Growth And Perennial Nature Of Bahiagrass, S. J. Rymph, K. J. Boote, J. W. Jones

IGC Proceedings (1977-2023)

The objective of this research was to modify an existing crop growth model for ability to predict growth and composition of bahiagrass (Paspalm notatum Flügge) in response to daily weather and management inputs. The CROPGRO-CSM cropping systems model has a generic, process-oriented structure that allows inclusion of new species and simulating cropping sequences and crop rotations. An early adaptation of CROPGRO-CSM "species files" for bahiagrass over-predicted growth during late fall through early spring, and totally failed in re-growth if all foliage was lost from freeze damage. Revised species parameters and use of "pest damage" offered only a partial solution. …

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State And Transition Model Of Lowland Grassland In Flooding Pampa, E. J. Jacobo, A. M. Rodríguez, V. A. Deregibus Aug 2023

State And Transition Model Of Lowland Grassland In Flooding Pampa, E. J. Jacobo, A. M. Rodríguez, V. A. Deregibus

IGC Proceedings (1977-2023)

Rainfall conditions are considered to be a major factor in determining vegetation structure in temperate grasslands with grazing playing a secondary role (Biondini et al., 1998; Sternberg et al., 2000). In order to analyse the relative importance of both factors on the lowland community of the Flooding Pampa we compared the responses of functional groups under both intermittent and continuous grazing regimes over a 3- year period of important inter seasonal rainfall variation. The results are presented in a state and transition model.

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The Influence Of Growing Degree Days On Robinia Pseudoacacia Browse Quality And Productivity In The Southeastern Usa, L. J. Unruh Snyder, J. Paul Mueller, Jean-Marie Luginbuhl, K. E. Turner, C. Brownie Aug 2023

The Influence Of Growing Degree Days On Robinia Pseudoacacia Browse Quality And Productivity In The Southeastern Usa, L. J. Unruh Snyder, J. Paul Mueller, Jean-Marie Luginbuhl, K. E. Turner, C. Brownie

IGC Proceedings (1977-2023)

The possibility of estimating browse quality and productivity of black locust (BL; Robinia pseudoacacia L.) herbage from accumulated air temperature heat units (growing degree days, GDD) could be a valuable tool for researchers and graziers in efficient allocation of feed resources. Accumulated air temperature heat units (GDD) above a 10° C base have been used to predict several forage quality constituents (Onstad & Fick ,1983).

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Modelling Tiller Density Dynamics In A Grass Sward, Masahiko Hirata Aug 2023

Modelling Tiller Density Dynamics In A Grass Sward, Masahiko Hirata

IGC Proceedings (1977-2023)

Simulation models are useful tools for grassland management. Among many quantitative and qualitative attributes describing vegetation of grasslands, density of plant population is important because of its close relationship with persistence of grasslands (Hirata, 2004), which in turn is crucial for sustainable agricultural production and/or conservation of the environment, wildlife and recreational resource. Although various models have described grassland vegetation, relatively few models have dealt with plant population density. This paper presents a model describing dynamics in tiller population density in a grass sward.

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Leaf And Tiller Dynamics In Centipede Grass And Bahia Grass, M. A. Islam, Masahiko Hirata Aug 2023

Leaf And Tiller Dynamics In Centipede Grass And Bahia Grass, M. A. Islam, Masahiko Hirata

IGC Proceedings (1977-2023)

Centipede grass (Eremochloa ophiuroides (Munro) Hack.) is a warm-season perennial which has received the attention of farmers and researchers as a new forage resource for sown pastures in the low-altitude regions of south-western Japan where bahia grass (Paspalum notatum Flügge) has been widely used (Islam & Hirata, 2005). Leaf and tiller dynamics provide the basis to explain variation in production and canopy structure of a grass sward (Rhodes & Collins, 1993), and knowledge of the dynamics can be used as a tool for sward management. However, this information is lacking for centipede grass (Islam & Hirata, 2005). The …

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Modelling Winter Grass Growth And Senescence, D. Hennessy, S. Laidlaw, M. O'Donovan, P. French Aug 2023

Modelling Winter Grass Growth And Senescence, D. Hennessy, S. Laidlaw, M. O'Donovan, P. French

IGC Proceedings (1977-2023)

In temperate climates, because net grass growth in winter is low, most grass growth models deal with the main growing season (Mar-Oct in the N Hemisphere), with little emphasis on grass growth in winter (Nov-Feb). However, grass tissue turns over continuously (Hennessy et al., 2004) and the fate of herbage entering the winter is important in extended grazing season systems. This study aimed to model winter grass growth for the period 15 Oct 2001 to 28 Jan 2002 for a range of autumn closing dates (1 Sep, 20 Sep and 10 Oct) by modifying an existing model, so that …

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Leaf Dry Matter Content Of Native Grassland Species Under Contrasting N And P Supply, P. Cruz, C. Jouany, Jérome M. Enjalbert, Michael Duru Aug 2023

Leaf Dry Matter Content Of Native Grassland Species Under Contrasting N And P Supply, P. Cruz, C. Jouany, Jérome M. Enjalbert, Michael Duru

IGC Proceedings (1977-2023)

The management of native grasslands - herbaceous vegetation with a broad diversity of flora and a large range of uses - must meet the requirements of environmental conservation and improvement of the quality of agricultural production. For this purpose we need tools for diagnosing the state of the vegetation in order to design, evaluate, and apply management practices to attain these objectives. These tools must be simple and quick to use and should not require botanical skills. Leaf dry matter content (LDMC) has been proposed as a good indicator of both fertility gradients and species preference for habitats (Cruz et …

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The Use Of Near Infrared Reflectance Spectroscopy (Nirs) To Follow The Leaf/Stem Ratio Of Legumes During Drying, D. Stilmant, Virginie Decruyenaere, C. Clément, P. Dardenne, N. Grogna Aug 2023

The Use Of Near Infrared Reflectance Spectroscopy (Nirs) To Follow The Leaf/Stem Ratio Of Legumes During Drying, D. Stilmant, Virginie Decruyenaere, C. Clément, P. Dardenne, N. Grogna

IGC Proceedings (1977-2023)

Legume-rich mixed swards allow the production of a high quantity protein-rich forage with low nitrogen input. Nevertheless, during hay or silage making, dry matter losses as high as, 40 and 25 % have been recorded (Ciotti & Cavallero, 1979; Stilmant et al., 2004). These losses have mainly been linked to the high sensitivity to physical loss of legume leaves during drying. The development of a tool to characterise leaf losses or leaf/stem ratio during drying will help us to define the technical approach to reach the best compromise between quality loss reduction and good pre-wilting of legum-rich mixed swards. …

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Near Infrared Spectroscopy Of Faeces To Predict Diet Quality In Grazing Animals: Development Of A Portable System, D. R. Tolleson, J. W. Stuth Aug 2023

Near Infrared Spectroscopy Of Faeces To Predict Diet Quality In Grazing Animals: Development Of A Portable System, D. R. Tolleson, J. W. Stuth

IGC Proceedings (1977-2023)

Faecal near infrared spectroscopy (FNIRS) has been used to predict dietary crude protein (CP) and digestible organic matter (DOM) in grazing animals (Stuth et al., 2003, Coates 2000). Development of robust FNIRS calibrations can be time consuming and costly, thus hindering the application of FNIRS in developing countries. Delivery of samples to central laboratory facilities is dependant upon adequate transportation infrastructure. A "take the laboratory to the samples" approach is being tested in Mongolia using a portable FNIRS laboratory (Stuth et al,. 2004). The initial step in this process is to duplicate the performance of a static laboratory …

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Potentialities Of Near Infrared Spectroscopy To Assess Nitrogen, Phosphorus And Potassium Nutrient Status Of Grasslands In The Reunion Island, Philippe Lecomte, Vincent Blanfort, Michael Duru, P. Thomas, P. Grimaud Aug 2023

Potentialities Of Near Infrared Spectroscopy To Assess Nitrogen, Phosphorus And Potassium Nutrient Status Of Grasslands In The Reunion Island, Philippe Lecomte, Vincent Blanfort, Michael Duru, P. Thomas, P. Grimaud

IGC Proceedings (1977-2023)

Controlled mineral fertilisation practices are an important component for sustainable management of grasslands. The assessment of available nutrients for plants and the general recommendations on the level of phosphorus and potassium to apply to grasslands are classically based on classical soil analysis and average regional levels. For nitrogen, mid or long term recommendations cannot easily be derived solely from soil composition, because it may be rapidly leached from the soil. Recent approaches tended to show that herbage plant N (Lemaire & Gastal, 1997), P, K (Duru & Huché, 1997) mineral analyses associated with actual biomass measurement could be useful for …

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The Prediction Of Biological Nitrogen Fixation, C. F. E. Topp, C. A. Watson, R. M. Rees, I. Sanders Aug 2023

The Prediction Of Biological Nitrogen Fixation, C. F. E. Topp, C. A. Watson, R. M. Rees, I. Sanders

IGC Proceedings (1977-2023)

In organic farming systems, biological nitrogen (N) fixation is crucial for short-term productivity and long-term sustainability. However, the estimation of biological N fixation is fraught with difficulties, and many equations attempt to estimate the process. As part of an organic research programme, biological N fixation was measured by the 15N dilution technique in the ley phases of 2 experimental organic ley-arable rotations at 2 sites, between 1997 and 2000. Hence, N fixation has been determined on N partitioned to above-ground biomass. The measured values have been compared with N fixation estimates calculated from the equations proposed by Korsaeth & …

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Assessment Of The Nitrogen Nutrition Index (Nni) By The Nitrogen Concentration Of The Upper Part Of The Sward, B. Deprez, R. Lambert, A. Peeters Aug 2023

Assessment Of The Nitrogen Nutrition Index (Nni) By The Nitrogen Concentration Of The Upper Part Of The Sward, B. Deprez, R. Lambert, A. Peeters

IGC Proceedings (1977-2023)

The Nitrogen Nutrition Index (NNI) is based on the concept of a critical nitrogen concentration, defined as the minimum N concentration in the aerial biomass necessary to obtain maximum yield. Values of Ncrit are high at the start of the growing period and decline during growth, in relation to dry matter accumulation (t DM/ha) according to the equation of Lemaire & Salette (1984): Ncrit(%) = 4.8(DM)-0.32. The NNI is calculated as the ratio of the actual N concentration of the sward to the N concentration required at a similar biomass to sustain non-limiting growth and biomass …

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Compilation Of A Database Of Research Information On Legume Based Grazing Systems; A Part Of The Leggraze Research Project, J. J. Rochon, G. Molle, A. Hopkins, J. M. Greef Aug 2023

Compilation Of A Database Of Research Information On Legume Based Grazing Systems; A Part Of The Leggraze Research Project, J. J. Rochon, G. Molle, A. Hopkins, J. M. Greef

IGC Proceedings (1977-2023)

The establishment of a publicly accessible web-resident database of published and current European research on agronomy, animal production and environmental impact of legume based grazing systems is reported. This database facilitates the sharing of information among the partners of the "Low input animal production based on forage legumes for grazing systems" (Leggraze), a research project funded by the UE (QL K5 CT-2001-02328). It also forms an important tool for transferring the results of the project to the wider research community and to end users in the agricultural sector and to policy makers at national and community level.

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Forage Monitoring Technology To Improve Risk Management Decision Making By Herders In The Gobi Region Of Mongolia, Jay Angerer, J. W. Stuth, D. Tsogoo, G. Tolleson, Dennis Sheehy, U. Gombosuren, Sean Granville-Ross Aug 2023

Forage Monitoring Technology To Improve Risk Management Decision Making By Herders In The Gobi Region Of Mongolia, Jay Angerer, J. W. Stuth, D. Tsogoo, G. Tolleson, Dennis Sheehy, U. Gombosuren, Sean Granville-Ross

IGC Proceedings (1977-2023)

In the period from 1999 to 2002, Mongolia experienced a series of droughts and severe winters that lowered livestock numbers by approximately 30% countrywide. In the Gobi region, livestock mortality reached 50% with many households losing entire herds (Siurua & Swift 2002). In March 2004, a program was initiated by the United States Agency for International Development (USAID) through the Global Livestock Collaborative Research and Support Program (GLCRSP). The goal of this program is to develop forage monitoring technologies that provide early warning of drought and winter disaster to improve livestock herder decision making in the Gobi region. The program …

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Modelling The Effect Of Breakeven Date In Spring Rotation Planner On Production And Profit Of A Pasture-Based Dairy System, P. C. Beukes, B. S. Thorrold, M. E. Wastney, C. C. Palliser, G. Levy, X. Chardon Aug 2023

Modelling The Effect Of Breakeven Date In Spring Rotation Planner On Production And Profit Of A Pasture-Based Dairy System, P. C. Beukes, B. S. Thorrold, M. E. Wastney, C. C. Palliser, G. Levy, X. Chardon

IGC Proceedings (1977-2023)

The breakeven date is the expected date when pasture supply exceeds cow demand. This date is used to plan the rotation rates, slow during the winter, when pasture growth is low and cows are dry, to a fast rotation in spring, when growth is accelerating and most cows lactating. This date is influenced by regional climate, mainly rainfall and soil temperature, which affects timing and rate of growth acceleration. The objective of this modeling exercise was to explore the effect of the breakeven date on milksolids (MS), grass silage, farm cover and economic farm surplus (EFS) over different climate years …

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Development Of A Model Simulating The Impact Of Management Strategies On Production From Beef Cattle Farming Systems Based On Permanent Pasture, M. Jouven, R. Baumont Aug 2023

Development Of A Model Simulating The Impact Of Management Strategies On Production From Beef Cattle Farming Systems Based On Permanent Pasture, M. Jouven, R. Baumont

IGC Proceedings (1977-2023)

Grazing systems in Europe increasingly have to meet environmental objectives, which influence management strategies. A deterministic model describing farming system dynamics is being developed in order to elucidate interactions between nature-friendly management practices, as for example late (after flowering) hay harvest or moderate stocking rate, and agricultural output.

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Grasscheck: Monitoring And Predicting Grass Production In Northern Ireland, P. D. Barrett, A. S. Laidlaw Aug 2023

Grasscheck: Monitoring And Predicting Grass Production In Northern Ireland, P. D. Barrett, A. S. Laidlaw

IGC Proceedings (1977-2023)

Grass budgeting is a key management practice on dairy farms to balance grass supply on paddocks with grass demand by the grazing herd. Grass budgets must be pre-emptive to be effective. The uncertainty of grass production and the difficulty in quantifying both current and forecasted rates of growth hamper effective budgeting and paddock management. Grass growth rates are highly variable both in time and space. Therefore, they vary greatly between locations at any given time and also across the season at any given location. Figure 1 shows the pattern of growth rates recorded at the Agricultural Research Institute of Northern …

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A Farmer Friendly Feed Budget Calculator For Grazing Management Decisions In Winter And Spring, M. Curnow, M. W. Hyder Aug 2023

A Farmer Friendly Feed Budget Calculator For Grazing Management Decisions In Winter And Spring, M. Curnow, M. W. Hyder

IGC Proceedings (1977-2023)

The Western Australian (WA) environment is Mediterranean with annual legume/grass pastures and a 6 month growing season. In autumn where over grazing can impact pasture establishment and in spring, prior to senescence, when under grazing can mean significant losses of efficiency are crucial times for grazing management. Pasture utilisation is typically low (25-35%) due to conservative stocking regimes; key to increasing productivity is increasing pasture utilisation (Grimm, 1998). Increased level of productivity require farmer sophistication in the way they feed budget. To this end, satellite technology is being used to provide farmers in southern Australia with weekly estimates of pasture …

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Feed Planning - Methods Used By “Expert” Farmers, D. I. Gray, W. J. Parker, E. A. Kemp, P. D. Kemp, I. M. Brookes, D. J. Horne, Paul R. Kenyon, C. Matthew, S. T. Morris, J. I. Reid, I. Valentine Aug 2023

Feed Planning - Methods Used By “Expert” Farmers, D. I. Gray, W. J. Parker, E. A. Kemp, P. D. Kemp, I. M. Brookes, D. J. Horne, Paul R. Kenyon, C. Matthew, S. T. Morris, J. I. Reid, I. Valentine

IGC Proceedings (1977-2023)

Although formal feed planning has been heavily promoted in New Zealand, relatively few farmers have adopted this approach (Nuthall & Bishop-Hurley, 1999). Reasons for non-adoption have been identified, but little is known about how farmers manage their pastoral farms in the absence of formal feed planning. To this end, the feed management processes used by three successful (expert) farmers were investigated.

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Grassland Monitoring System For Sustainable Utilisation In Inner Mongolia, China. 1. Concept Of Real-Time Monitoring System And Estimation Of Biomass Using Noaa/Ndvi, T. Akiyama, K. Kawamura, H. Yokota, Z. Z. Chen Aug 2023

Grassland Monitoring System For Sustainable Utilisation In Inner Mongolia, China. 1. Concept Of Real-Time Monitoring System And Estimation Of Biomass Using Noaa/Ndvi, T. Akiyama, K. Kawamura, H. Yokota, Z. Z. Chen

IGC Proceedings (1977-2023)

Steppe grassland in Inner Mongolia, China, is threatened by desertification mainly because of overgrazing by animals. Grassland production varies from year to year and from place to place and is much affected by climate conditions and grazing intensity. The questions addressed in these three papers are the development of a real-time monitoring system to conserve the ecosystem whilst at the same time achieving sustainable livestock farming. The development of satellite sensors with remarkable resolution made it possible to provide precise, timely and site specific information on grassland. Geographic Information Systems (GIS) and enhancement of accuracy of Global Positioning Systems (GPS) …

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