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Enhancing Water Use Efficiency On Irrigated Dairy Pastures With Nitrogen Fertiliser, Frank R. Mckenzie, J. L. Jacobs, G. N. Ward Aug 2023

Enhancing Water Use Efficiency On Irrigated Dairy Pastures With Nitrogen Fertiliser, Frank R. Mckenzie, J. L. Jacobs, G. N. Ward

IGC Proceedings (1977-2023)

Low summer rainfall in southwest Victoria, Australia, restricts pasture growth and limits milk production. One fifth of dairy farmers in the region have some capacity to irrigate during summer. Irrigated dairy pastures are relatively poor utilisers of water with water use efficiencies (WUE) of about 1 t DM/ML water (Ward et al. 1998). Using nitrogen (N) fertiliser may increase dry matter (DM) yields for a given amount of water. Data on N response efficiencies from irrigated pasture in southwest Victoria are lacking. Two experiments determined the potential of N fertiliser to maximise the conversion of irrigated water to pasture …

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Influence Of Water Stress On Root/Cladode Ratio And Water-Use Efficiency Of Opuntia Ficus-Indica And O. Robusta, Hennie A. Snyman Aug 2023

Influence Of Water Stress On Root/Cladode Ratio And Water-Use Efficiency Of Opuntia Ficus-Indica And O. Robusta, Hennie A. Snyman

IGC Proceedings (1977-2023)

Due to the regular occurrence of drought in southern Africa, there is a need for more research on drought tolerant fodder plants such as Opuntia (cactus pear) species. In contrast with the cladode system, the roots of cactus pear have received little attention, however, they certainly differ from other plants, as they develop xeromorphic characteristics, enabling the plant to survive prolonged periods of drought (Nobel, 1988). The influence of different water applications was evaluated in terms of root and cladode mass, water-use efficiency (WUE) and root length for one-year-old plants of Opuntia ficus-indica (cultivar Morado) and O. robusta (cultivar Monterey).

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Variability In Tolerance To Water Stress By Holcus Lanatus L., Bromus Valdivianus Phil. And Agrostis Capillaris L. Accessions, Ignacio F. López, Oscar A. Balocchi Aug 2023

Variability In Tolerance To Water Stress By Holcus Lanatus L., Bromus Valdivianus Phil. And Agrostis Capillaris L. Accessions, Ignacio F. López, Oscar A. Balocchi

IGC Proceedings (1977-2023)

Holcus lanatus L. (Hl), Bromus valdivianus Phil. (Bv) and Agrostis capillaris L. (Ac) are frequently present in the naturalised pasture of the Chilean humid region, which has a summer drought with two distinguishable areas according to average summer rainfall: a Northern area (Long summer drought, LSuD: 136-186 mm;) and a Southern area (Short summer drought, SSuD: 186-338 mm). It was hypothesised that plant species have colonised areas with different water deficits during summer through differentiated drought tolerance, which would imply ecotype generation.

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Phosphorus Transfer To River Water From Grassland Catchments In Ireland, H. Tunney, P. Jordan, G. Kiely, R. Moles, G. Morgan, P. Byrne, W. Menary, K. Daly Aug 2023

Phosphorus Transfer To River Water From Grassland Catchments In Ireland, H. Tunney, P. Jordan, G. Kiely, R. Moles, G. Morgan, P. Byrne, W. Menary, K. Daly

IGC Proceedings (1977-2023)

In Ireland it is estimated that at least half of phosphorus (P) loss to water is from agricultural sources and National and European Union policy and legislation aim at reducing phosphorus (P) loss to water in order to reduce eutrophication. In Ireland, the average soil test P (STP) levels increased ten-fold, from less than 1 to over 8 mg Morgan P per l soil over the past 50 years, reflecting increased P inputs in fertiliser and animal feed. One of the main objectives of this three-year research programme, started in 2001, was to investigate P loss to water in grassland …

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Profitable And Sustainable Grazing Systems For Livestock Producers With Saline Land In Southern Australia, Nick Edwards, D. G. Masters, Edward G. Barrett-Lennard, M. Hebart, M. Mccaskill, W. King, W. Mason Aug 2023

Profitable And Sustainable Grazing Systems For Livestock Producers With Saline Land In Southern Australia, Nick Edwards, D. G. Masters, Edward G. Barrett-Lennard, M. Hebart, M. Mccaskill, W. King, W. Mason

IGC Proceedings (1977-2023)

Dryland salinity affects over 2.5 M ha in Australia, mostly in southern states and is expanding at 3-5% per year (NLWRA, 2001). The prognosis is for considerable expansion of the area affected by salinity and waterlogging (1217 M ha at equilibrium), because groundwater levels continue to rise and only small-scale land management programmes have been implemented. In addition, many waterways are increasingly saline, especially in the Murray Darling Basin and in Western Australia (WA). Sustainable Grazing on Saline Land (SGSL) addresses the need to make productive use of saline land and water resources. Its research component operates at 12 sites …

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Growth Characteristics Of Kikuyu Grass With Different Sources And Doses Of Phosphorus, José C. Pinto, Í. P. A. Santos, A. E. Furtini Neto, A. R. Morais, E. E. Mesquita, D. J. G. Faria, I. F. Andrade Aug 2023

Growth Characteristics Of Kikuyu Grass With Different Sources And Doses Of Phosphorus, José C. Pinto, Í. P. A. Santos, A. E. Furtini Neto, A. R. Morais, E. E. Mesquita, D. J. G. Faria, I. F. Andrade

IGC Proceedings (1977-2023)

Growth is defined as the increase in size, volume and mass as a function of time. Growth analysis allows evaluating the final growth of the plant as a whole and the contribution of the different organs in total growth (Benincasa, 1988). The experiment had as objective to evaluate specific leaf area (SLA), leaf area per unit of leaf DM, leaf area ratio (LAR), leaf area per unit of whole plant DM, leaf weight ratio (LWR), leaf weight per unit of plant weight, leaf area index (LAI), leaf area per unit of soil area, leaf/stem ratio (LSR), leaf weight per unit …

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Effects Of Soil Compaction By Animal Trampling On Growth Of Agropyron Repens, M. R. Chaichi, B. Ataeian, M. Mohseni Saravi Aug 2023

Effects Of Soil Compaction By Animal Trampling On Growth Of Agropyron Repens, M. R. Chaichi, B. Ataeian, M. Mohseni Saravi

IGC Proceedings (1977-2023)

Animal trampling is the most important factor that increases soil compaction beyond the soil elastic property in rangelands under heavy grazing intensities (Lull, 1959). The complicated ecological interactions in a rangeland ecosystem make it difficult to predict the impact of trampling under different conditions. However, soil properties and vegetation composition are sensitive to different grazing management practices. This research, which was carried out in simulated conditions, sought to establish the contribution of soil compaction resulting from animal trampling over a long period to the decline in rangeland condition.

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Effect Of Fertilisation With Macro And Micronutrients On The Mineral Content Of Leucaena Leucocephala, S. Camacaro Aug 2023

Effect Of Fertilisation With Macro And Micronutrients On The Mineral Content Of Leucaena Leucocephala, S. Camacaro

IGC Proceedings (1977-2023)

The Venezuelan cattle industry has been developed in areas with soil limitations, causing a negative impact on animal production, since the pastures are of medium to low quality and quick maturation (Chacón, 1996). On the other hand, forage legumes have been introduced to improve the nutritive value of the biomass on offer. Growing interest has been shown in Leucaena leucocephala in recent years due to its multiple benefits (Duguma et al., 1988). However the use of varieties not adapted to acid soils can be a problem, largely due their low tolerance to the toxicity of the aluminium and to …

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Forage Quality And Yield Of Berseem Clover And Annual Ryegrass Grown In Pure And Mixed Stands In Relation To Different N Application Rates, C. Scarpello, L. Stringi, G. Amato, D. Giambalvo, P. Trapani, C. Attardo Aug 2023

Forage Quality And Yield Of Berseem Clover And Annual Ryegrass Grown In Pure And Mixed Stands In Relation To Different N Application Rates, C. Scarpello, L. Stringi, G. Amato, D. Giambalvo, P. Trapani, C. Attardo

IGC Proceedings (1977-2023)

Grass-legume mixtures offer several advantages over monocultures in forage-animal production systems (Haynes, 1980). In fact, in grass-legume mixtures forage yield and quality are generally higher compared to grass monocultures also due to more efficient soil N-utilisation (Ta & Faris, 1987); furthermore grasses often utilise some of the N fixed by legumes (Malhi et al., 2002). Legumes do not generally require the addition of N fertiliser due to symbiotically fixed N, but the yield of the grass component in a mixture may be further improved with N application. The objective of this study was to investigate forage yield and quality …

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Effect Of Different Phosphorous Sources And Levels On The Productive Behaviour Of A Lotus Pedunculatus Cv. Grasslands Maku Oversown Pasture, R. E. Bermúdez, W. Ayala Aug 2023

Effect Of Different Phosphorous Sources And Levels On The Productive Behaviour Of A Lotus Pedunculatus Cv. Grasslands Maku Oversown Pasture, R. E. Bermúdez, W. Ayala

IGC Proceedings (1977-2023)

The organic meat production protocol of Uruguay (INAC, 2003) requires that the animals graze pastures that receive no chemical fertilisers. The oversown legume pastures in Uruguay used to be fertilised with soluble phosphorous (P) sources that are not accepted by the protocol. The relative efficiency of different P sources would be useful data for farmers. This information is not available for the acid soils of the eastern region of Uruguay. Lotus pedunculatus cv. Grasslands Maku is one of the most adapted legumes to be included in this type of pasture, as the sown area has increased in the last few …

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Effects Of Sowing Date And Phosphorus Fertiliser Application On Winter Survival Of Lucerne Cv. Aohan In The Northern Semi-Arid Region Of China, Z. L. Wang, Q. Zh. Sun, Y. W. Wang, Zh. Y. Li, Sh. F. Zhao Aug 2023

Effects Of Sowing Date And Phosphorus Fertiliser Application On Winter Survival Of Lucerne Cv. Aohan In The Northern Semi-Arid Region Of China, Z. L. Wang, Q. Zh. Sun, Y. W. Wang, Zh. Y. Li, Sh. F. Zhao

IGC Proceedings (1977-2023)

In the northern semi-arid region of China, winter survival is always a limiting factor for lucerne production, because low temperatures and a dry climate in winter (Zhou et al., 1993; Ma, 2000; Sun & Gui, 2001; Sun et al., 2003). An experiment was conducted to find an appropriate sowing date and P application rate in order to improve lucerne winter survival.

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Effect Of Animal Manure On Forage Yield And Quality Of Pangolagrass And Soil Fertility, Fu‐Hsing Hsu, Kuoyuan Hong, C. H. Hsieh Aug 2023

Effect Of Animal Manure On Forage Yield And Quality Of Pangolagrass And Soil Fertility, Fu‐Hsing Hsu, Kuoyuan Hong, C. H. Hsieh

IGC Proceedings (1977-2023)

Animal wastes may cause environmental pollution. Lu & Hsu (2004) reported that N utilisation in the manure by pangolagrass was 10-28%. Objectives of this study were to determine the effect of animal manure on forage yield and quality of pangolagrass and soil fertility.

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Effect Of Mineral Fertiliser Levels On The Yield Quality Of Perennial Ryegrass, S. R. Bumane, Aleksandr Adamovich Aug 2023

Effect Of Mineral Fertiliser Levels On The Yield Quality Of Perennial Ryegrass, S. R. Bumane, Aleksandr Adamovich

IGC Proceedings (1977-2023)

Perennial ryegrass is a short-lived bunch-grass with shallow root system. The plant is nutritious and palatable and stands up to hard grazing. It will not do well under poor conditions, where fertility or rainfall is low. Perennial ryegrass is a major component in different seed mixtures that are used for grassland management and forage production. This plant is the predominant component in nearly all pasture mixtures, with perennial ryegrass and white or red clover forming the basis for permanent pasture for dairy production and cattle. This grass species plays an important role in grassland productivity and forage quality. Ryegrass requires …

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Supplementation Of Cattle With Rock Phosphate And Urea Treated Straw To Improve Manure Quality And Crop Yields In The Sahel Zone Of Senegal, Maimouna Cissé, M. N’Diaye, C. M. N'Dione Aug 2023

Supplementation Of Cattle With Rock Phosphate And Urea Treated Straw To Improve Manure Quality And Crop Yields In The Sahel Zone Of Senegal, Maimouna Cissé, M. N’Diaye, C. M. N'Dione

IGC Proceedings (1977-2023)

Mineral deficiencies are a major constraint in improving animal production and crop yield in the Sahel zone (Cissé et al., 1996). Millet (Pennisetum glaucum) and groundnut (Arachis hypogaea) are two major food and cash crops in this zone. The purpose of this study was to assess effects of supplementing grazing cattle with rock phosphate and nitrogen enriched diets on animal performances, and the effects of the application of their manure on crop yield in a pearl millet-groundnut rotational system located in N Senegal.

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Nitrogen Balance And Soil Nitrates In Suckler Cow Pastures Fertilised With Mineral Fertiliser, Pig Slurry Or Cattle Compost, Isabelle Dufrasne, J. F. Cabaraux, L. Istasse, J. L. Hornick Aug 2023

Nitrogen Balance And Soil Nitrates In Suckler Cow Pastures Fertilised With Mineral Fertiliser, Pig Slurry Or Cattle Compost, Isabelle Dufrasne, J. F. Cabaraux, L. Istasse, J. L. Hornick

IGC Proceedings (1977-2023)

A code of good practice was established by each European member state according to the EU Nitrate Directive. In Belgium, the nitrogen (N) inputs on pastures from slurry or compost are limited to 210 kg N/ha. Bigger quantities can be applied if the farmer follows a programme of additional measurements, including soil nitrate (NO3) analysis. This investigation aimed to measure animal performance, N balance and soil NO3 in pastures fertilised with mineral N, pig slurry or cattle compost, the pastures being grazed by Belgian Blue cows and their calves.

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Reducing Soil Phosphorus Buildup From Animal Manure Application, G. W. Evers Aug 2023

Reducing Soil Phosphorus Buildup From Animal Manure Application, G. W. Evers

IGC Proceedings (1977-2023)

Animal manure is an excellent plant nutrient source for pastures but increasing soil P level over time is a major environmental problem (Sims et al., 1998). The increase in residual soil P is due to the difference in N-P ratio in the manure and forage crop requirements (Robinson, 1996). All the N in animal manure is normally utilised but only from 20 to 40% of the P is taken up. With moderate rates of manure application, nitrogen becomes the limiting nutrient for grasses. The objective of this study was to see if combining commercial N fertiliser with broiler litter …

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Effects Of Nitrogen Fertiliser On Nitrate Leaching And Production Of Autumn-Sown Italian Ryegrass In A Double-Cropping System On A New Zealand Dairy Farm, Errol R. Thom, A. A. Judge, R. N. Jensen, M. S. Sprosen, Sterwart F. Ledgard, W. D. Catto Aug 2023

Effects Of Nitrogen Fertiliser On Nitrate Leaching And Production Of Autumn-Sown Italian Ryegrass In A Double-Cropping System On A New Zealand Dairy Farm, Errol R. Thom, A. A. Judge, R. N. Jensen, M. S. Sprosen, Sterwart F. Ledgard, W. D. Catto

IGC Proceedings (1977-2023)

On intensive dairy farms in New Zealand, winter Italian ryegrass crops are combined with summer maize silage crops in double-cropping systems. Limited data (Davies & Neilson, 1975) showed variable ryegrass yield responses to nitrogen (N) fertiliser when grown after maize. Nitrogen leaching losses were not measured in this experiment but Ledgard et al. (1988) showed that late autumn/early winter N applications are vulnerable to leaching. Different rates of N fertiliser were applied to Italian ryegrass grown after maize to assess yield responses and levels of nitrate leaching.

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Nitrogen And Phosphorus Losses In Runoff On Beef Production Systems, Marta Alfaro, F. J. Salazar, N. G. Teuber, S. P. Iraira, L. A. Ramirez Aug 2023

Nitrogen And Phosphorus Losses In Runoff On Beef Production Systems, Marta Alfaro, F. J. Salazar, N. G. Teuber, S. P. Iraira, L. A. Ramirez

IGC Proceedings (1977-2023)

In West Europe countries between 37 and 82% of the nitrogen (N) and between 27 and 38% of the phosphorus (P) reaching water sources come from agriculture and a strong correlation between the number of animals per area unit and N and P contribution to waters has been shown (Issermann, 1990). There are few data about the environmental impact of beef production systems in Southern Chile. The objective of this experiment was to quantify N and P losses in runoff (surface and subsurface) with two different stocking rates in Southern Chile.

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Effect Of Long-Term Nutrient Management Strategies For Pastures On Phosphorus In Surface Runoff And Soil Quality, G. L. Mullins, J. P. Fontenot, G. A. Alloush, G. Johnson, D. G. Boyer, V. G. Allen, G. Scaglia Aug 2023

Effect Of Long-Term Nutrient Management Strategies For Pastures On Phosphorus In Surface Runoff And Soil Quality, G. L. Mullins, J. P. Fontenot, G. A. Alloush, G. Johnson, D. G. Boyer, V. G. Allen, G. Scaglia

IGC Proceedings (1977-2023)

Manure, whether mechanically applied or deposited by grazing animals, has been associated with increased risk of non-point source pollution, especially phosphorus. This is especially true in areas where the industry, especially poultry, has been concentrated in geographical areas that are grain deficient, resulting in a reliance on imported grain for poultry feed. Intensification has resulted in the production of large quantities of poultry manure, within relatively small geographical areas. Surplus litter is typically land applied as a nutrient source or used as an animal feed. The objective of this project was to evaluate the effects of long-term nutrient management strategies …

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Increase In Forage Maize Production By Bacterial Fertilisers, D. Egamberdiyeva, G. Hoflich Aug 2023

Increase In Forage Maize Production By Bacterial Fertilisers, D. Egamberdiyeva, G. Hoflich

IGC Proceedings (1977-2023)

Farmers in many countries value green material generated from maize as a high quality forage. Its inclusion in dairy cow diets can improve forage intake, increase animal performance and has the potential to reduce production costs (Phipps, 1994). Restrictions on the use of chemical fertilisers and a renewed interest in organic sustainable farming systems in general, has restored attention to crop rotations The increase of maize production using bacterial fertilisers also gives alternative ways to reduce chemical fertilisers in forage production. Increased uptake of nutrients such as N, P, and K and crop yield was reported with rhizobacteria (Lazarovits & …

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Soil Organic Matter Along A Degradation Gradient In A Semi-Arid Rangeland Of South Africa, Chris C. Du Preez, Hennie A. Snyman Aug 2023

Soil Organic Matter Along A Degradation Gradient In A Semi-Arid Rangeland Of South Africa, Chris C. Du Preez, Hennie A. Snyman

IGC Proceedings (1977-2023)

In a semi-arid South Africa rangeland on a sandy loam soil, artificial manipulations to create various rangeland conditions typical of different levels of livestock impact were shown to result in considerable losses of organic matter after 15 years (Du Preez & Snyman, 1993). In this follow-up study on a similar soil, we regularly measured the organic matter content following the conversion of rangeland in a good to a poor ecological condition, an undisturbed bare soil and a cultivated soil respectively. The changes in soil organic matter content after five years are reported.

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Soil Microbial Diversity Of An Artificial Caragana Korshinskii Plantation On The Loess Plateau Of China, W. Zhang, H. L. Wei, H. W. Gao, Y. G. Hu Aug 2023

Soil Microbial Diversity Of An Artificial Caragana Korshinskii Plantation On The Loess Plateau Of China, W. Zhang, H. L. Wei, H. W. Gao, Y. G. Hu

IGC Proceedings (1977-2023)

Peashrub (Caragana korshinskii) is an important dune-fixation plant on the loess plateau of China and is valuable in ecological environment construction of North-western China. For determining relationships between peashrub and soil microbes, three clone libraries of 16S rDNA from rhizoplane, rhizosphere and bulk soil communities of peashrub were constructed with a culture-independent approach. The data obtained from three clone libraries were used to investigate the magnitude of vegetative changes in the microbial community, and to search for general ecological relationships.

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Grazing Effects On Some Soil Characteristics In Lar Rangelands, S. A. Javadi, M. Jafari, Gh. Zahedi Aug 2023

Grazing Effects On Some Soil Characteristics In Lar Rangelands, S. A. Javadi, M. Jafari, Gh. Zahedi

IGC Proceedings (1977-2023)

Heavy grazing pressures jeopardise the sustainability of the ecosystem by reducing soil fertility (Dormaar et al., 1998). Different results have been reported of grazing intensities on soil chemical properties, which stem from climate, soil, vegetation, management and kind of animal (Dormaar et al., 1998; Javadi, 2003; Sanadgool, 2002).

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Accumulation And Decomposition Rates And N, P And K Returned To The Soil By The Litter Of Tropical Legumes And Grasses, Gustavo Crespo, I. Rodríguez, M. F. Días, Sandra Lok Aug 2023

Accumulation And Decomposition Rates And N, P And K Returned To The Soil By The Litter Of Tropical Legumes And Grasses, Gustavo Crespo, I. Rodríguez, M. F. Días, Sandra Lok

IGC Proceedings (1977-2023)

The return of plant nutrients through litter decomposition of legumes and grasses is important for the sustainability of grassland ecosystems (Sánchez et al., 1989). Therefore, the selection of species that produce high amounts of decomposable litter is important . The objective of the present work was to study the production and decomposition rates of litter from various legumes and grasses in Cuba.

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Validation Of The Software “Recycling Of Nutrients” In Dairy-Farms Of Western Cuba, I. Rodríguez, Gustavo Crespo, M. F. Días, S. Fraga Aug 2023

Validation Of The Software “Recycling Of Nutrients” In Dairy-Farms Of Western Cuba, I. Rodríguez, Gustavo Crespo, M. F. Días, S. Fraga

IGC Proceedings (1977-2023)

To maintain a good productivity in the soil-plant-animal system it is necessary to achieve an equilibrium between input and output of nutrients and energy. Models and simulation software have been proposed for this purpose. For dairy farms, models have been utilised to show the behaviour of different aspects, such as: feed utilisation, energy flow, digestibility values and daily weight gains (Freer et al., 1970; Assis & France, 1983, Bruce et al., 1984). However, there are few models showing the interaction between soil-plant- animal components of these systems. The objective of the present study was to validate the software …

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Modelling Urine Nitrogen Production And Leaching Losses For Pasture-Based Dairying Systems, I. M. Brookes, D. J. Horne Aug 2023

Modelling Urine Nitrogen Production And Leaching Losses For Pasture-Based Dairying Systems, I. M. Brookes, D. J. Horne

IGC Proceedings (1977-2023)

Urine from dairy cattle grazing pastures with high crude protein (CP) concentrations is a major source of N lost in drainage water from New Zealand farms. This paper provides predictions of urinary N leaching losses for a range of stocking rates and levels of supplementation.

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Cap Reform And Nitrate Restrictions: Implications For Irish Grass Based Dairy Production Systems, Anne Marie Butler, M. Wallace, P. Dillon Aug 2023

Cap Reform And Nitrate Restrictions: Implications For Irish Grass Based Dairy Production Systems, Anne Marie Butler, M. Wallace, P. Dillon

IGC Proceedings (1977-2023)

The benefit of a systems approach to analysing production situations has long been recognised in agricultural research. The development and application of production-oriented dairy models offer tremendous capabilities for both encompassing the realities faced by producers while also considering the adaptation possibilities available to them in light of internal and external forces of change. This farm level dairy model represents one such approach. The objectives of the study were: (1) to develop a comprehensive farm-level model of Irish milk production systems and (2) to apply the model to identify optimal adaptation strategies of dairy farmers within the context of European …

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Silvopastoral Systems: Analyses Of An Alternative To Open Swards, James H. Mcadam, M. R. Mosquera-Losada, V. Papanastasis, Andrea Pardini, M. L. Rigueiro-Rodríguez Aug 2023

Silvopastoral Systems: Analyses Of An Alternative To Open Swards, James H. Mcadam, M. R. Mosquera-Losada, V. Papanastasis, Andrea Pardini, M. L. Rigueiro-Rodríguez

IGC Proceedings (1977-2023)

Silvopasture is a sustainable land use management practiced in most continents in the world including parts of southern Europe, but is not broadly used in northern and western Europe. The importance of this practice has been recognised and the last draft of the EU regulation by the European Agricultural Fund for Rural Development (http://europa.eu.int/comm/agriculture/capreform/rurdevprop_en.pdf) includes specifically funding for establishment of agroforestry practices in Europe. This paper discusses the advantages of managing semi intensive grassland within a silvopastoral system from an ecological, productive and social point of view in the south, south-central and western countries of Europe.

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Sustainable Grazing On Saline Land In Western Australia - Multidisciplinary Research Linking Producers And Scientists, Hayley C. Norman, D. G. Masters, M. G. Wilmot, A. J. Rintoul, R. Silberstein, E. Lefroy, T. York Aug 2023

Sustainable Grazing On Saline Land In Western Australia - Multidisciplinary Research Linking Producers And Scientists, Hayley C. Norman, D. G. Masters, M. G. Wilmot, A. J. Rintoul, R. Silberstein, E. Lefroy, T. York

IGC Proceedings (1977-2023)

Dryland salinity is one of the most critical environmental issues challenging Western Australian farmers. Currently 10% of the cropping zone (1.8 million ha) is salt-affected and this is predicted to increase dramatically in the next 50 years (NLWRA, 2001). Animals grazing saline pasture systems represent the most likely large-scale opportunity for economic return from saline land in the short to medium term. To date, few farmers have invested in large-scale revegetation of saline land as the economic return from grazing has not been perceived to cover costs. Furthermore other benefits of saltland pasture systems, such as biodiversity, water use and …

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Low Input Techniques For Firebreak Covering: Agronomic Aspects, S. Caredda, Antonello Franca, F. Sanna, G. Seddaiu Aug 2023

Low Input Techniques For Firebreak Covering: Agronomic Aspects, S. Caredda, Antonello Franca, F. Sanna, G. Seddaiu

IGC Proceedings (1977-2023)

In Sardinia, wild fire prevention is traditionally "passive" , based on mechanical removal of vegetation and upper soil layers. This has a dramatic negative effect on plant diversity and soil erosion. This experiment concerns "active" prevention of wildfires, based on green covering and grazing of firebreaks. The objective was the establishment of a persistent green cover, to be grazed by animals to reduce fuel accumulation.

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