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Articles 2191 - 2220 of 13586
Full-Text Articles in Entire DC Network
Ocean Acidification Mitigation: Potential Expansion Of Sav Restoration Strategy In The Chesapeake Bay, Cree N. Taylor
Ocean Acidification Mitigation: Potential Expansion Of Sav Restoration Strategy In The Chesapeake Bay, Cree N. Taylor
Undergraduate Research Posters
Zostera marina is a species of marine macrophyte that has been largely prioritized in past submerged aquatic vegetation (SAV) restoration initiatives within the Chesapeake Bay because of its 1) previous abundance, 2) demonstrated carbon burial abilities, and 3) observed ability for meadows of Z. marina to ameliorate low pH conditions. Due to the temperature variability and poor water quality associated with anthropogenic disturbances in the Chesapeake Bay, Z. Marina beds have experienced several die-off events with limited capacity for regrowth. This systematic review explored the possible benefits of focusing future SAV recovery initiatives on ensuring a diverse variety of SAV …
Evaluating The Effectiveness Of Benguet Pine (Pinus Kesiya) Xylem For Deep Well Water Filtration, Allen Conner C. Hizon, Robert Zachary M. Santos, Juan Jose B. Lacson, Jefferson Danilo G. Villarin, Juan Carlo T. Gumangan
Evaluating The Effectiveness Of Benguet Pine (Pinus Kesiya) Xylem For Deep Well Water Filtration, Allen Conner C. Hizon, Robert Zachary M. Santos, Juan Jose B. Lacson, Jefferson Danilo G. Villarin, Juan Carlo T. Gumangan
Sinaya: A Philippine Journal for Senior High School Teachers and Students
Even today, many rural and remote communities still do not have access to safe drinking water, which is a basic right of every human. To address this problem, the effectiveness of the Benguet pine tree (Pinus kesiya) xylem as a sustainable water filtration method for well water was investigated. The physical and chemical properties of the filtered and unfiltered deep well water were tested: the total dissolved solids (TDS) and the electrical conductivity using a 5-in-1 electronic water quality tester and the pH level using pH strips. On the other hand, the microbiological metrics, such as heterotrophic plate …
The Effect Of Thidiazuron Treatment On The Growth Of Vanda Limbata Blume In Vivo, Novika Ditasya Putri, Nintya Setiari, Yulita Nurchayati, Sri Widodo Agung Suedy
The Effect Of Thidiazuron Treatment On The Growth Of Vanda Limbata Blume In Vivo, Novika Ditasya Putri, Nintya Setiari, Yulita Nurchayati, Sri Widodo Agung Suedy
Makara Journal of Science
Vanda limbata is one of the most popular ornamental orchids. Currently, its growth is slow, making it necessary to improve its cultivation techniques. One of the possible ways to achieve this is to use plant growth regulator (PGR) treatment. Thidiazuron (TDZ) is a cytokinin used to increase the growth of V. limbata. This study aimed to determine the effect of TDZ concentration on the growth rate of V. limbata. The study involved cultivating V. limbata on planting media and spraying it with TDZ at various concentrations. This research uses a CRD (Completely Randomized Design) single-factor, which is TDZ concentration at …
An Overview Of Gibberellin Inhibitors For Regulating Vegetable Growth And Development, Erik Setiawan, Rahmat Budiarto, Jajang Sauman Hamdani, Mansour Ghorbanpour
An Overview Of Gibberellin Inhibitors For Regulating Vegetable Growth And Development, Erik Setiawan, Rahmat Budiarto, Jajang Sauman Hamdani, Mansour Ghorbanpour
Jurnal Kultivasi
Gibberellin (GAs) promotes plant growth processes like germination, shoot elongation, root development, and flowering, while its inhibition is occasionally used in some vegetable crop practices. This paper aims to review the current literature on GAs inhibitors in practical vegetable crops and suggest future strategies for increasing yield. In some vegetable crops, inhibiting GAs with natural (abscisic acid, ethylene) or synthetic (paclobutrazol, prohexadione-Ca) regulators is key to improving yield and quality. Abscisic acid (ABA) counteracts GAs in germination and stress adaptation, while ethylene (ET) opposes GAs in senescence and growth inhibition. The application of paclobutrazol (PBZ) and prohexadione-Ca (Pro-Ca) is known …
Impacts Of Gibberellin Application On Citrus: An Overview From Seed Germination To Fruit Quality Enhancement, Siti Auliya Rahma, Rahmat Budiarto, Syariful Mubarok, Supatida Abdullakasim
Impacts Of Gibberellin Application On Citrus: An Overview From Seed Germination To Fruit Quality Enhancement, Siti Auliya Rahma, Rahmat Budiarto, Syariful Mubarok, Supatida Abdullakasim
Jurnal Kultivasi
Gibberellins are key plant hormones, and their application in citrus plants is frequently reported. This review aims to provide an overview of the application of gibberellic acid (GA3) in citrus cultivation, emphasizing their effects on growth, flowering, fruit quality, and ripening. Citrus fruits often face challenges like irregular fruit set, size inconsistency, and environmental stress, impacting yield and profitability, with exogenous gibberellin application as a potential solution. Applying gibberellins can accelerate citrus seed germination and seedling growth, enhance vegetative growth, inhibit flowering, delay fruit ripening, and improve fruit quality. However, the efficacy of gibberellins varies across species and conditions, highlighting …
Comparative Study Of Rice Morphological And Physiological Characteristics Of Rice Grown Under Organic And Inorganic Farming, Amad Safrudin, Ratna Dewi, Dulbari
Comparative Study Of Rice Morphological And Physiological Characteristics Of Rice Grown Under Organic And Inorganic Farming, Amad Safrudin, Ratna Dewi, Dulbari
Jurnal Kultivasi
Organic farming practices have shown a potential to improve rice yields, aside from the popular conventional ones. This study aimed to comparatively analyze the morpho-physiological characteristics of rice plants grown under organic and inorganic farming. This research was conducted at the Polinela Organic Farm experimental station (5°21'10"S 105°13'43"E, 114 m sea above level), from February to April 2023 using a completely randomized design. The results showed that rice grown organically exhibited a notably higher chlorophyll index and actual water use efficiency compared to those grown inorganically. Conversely, inorganic farming resulted in a greater number of tillers than organic farming. However, …
Correlation Of Arbuscular Mycorrhizal Dosage With Level Of Colonization, Nutrient Concentration, And Photosynthesis Pigment Of Cavendish Banana Plant, Muhammad Akhsan Akib, Nur Ilmi, Risnawati, Retno Prayudyaningsih, Syatrawati
Correlation Of Arbuscular Mycorrhizal Dosage With Level Of Colonization, Nutrient Concentration, And Photosynthesis Pigment Of Cavendish Banana Plant, Muhammad Akhsan Akib, Nur Ilmi, Risnawati, Retno Prayudyaningsih, Syatrawati
Jurnal Kultivasi
The commercial development of Cavendish bananas still faces many obstacles, including the availability of seedlings/suckers at low prices, so technological substitution is needed to stimulate the growth of Cavendish banana suckers in the form of arbuscular mycorrhizal (AM) biological agents. The research aims to determine the correlation between AM doses and colonization levels, tissue nutrient concentrations, and photosynthetic pigments in Cavendish banana seedlings/suckers. It is also a novelty in this research study. The research was carried out in Parepare city at coordinates 3°59'30.204" S; 119°38'42.936" E using four AM doses as independent variables, namely 0 g, 5 g, 10 g, …
Phenology And Resource Allocation Strategies Of Diploid Flowering Rush (Butomus Umbellatus) In Ohio And New York, Maxwell G. Gebhart, Ryan M. Wersal, Andrew R. Hannes, Nathan E. Harms, Bradley T. Sartain, William L. Wolanske, Mia Yeager
Phenology And Resource Allocation Strategies Of Diploid Flowering Rush (Butomus Umbellatus) In Ohio And New York, Maxwell G. Gebhart, Ryan M. Wersal, Andrew R. Hannes, Nathan E. Harms, Bradley T. Sartain, William L. Wolanske, Mia Yeager
Biological Sciences Department Publications
Flowering rush (Butomus umbellatus L.) is an emergent perennial monocot that has invaded aquatic systems along the U.S.–Canadian border. Currently, there are two known cytotypes of flowering rush, diploid and triploid, within the invaded range. Although most studies have focused on the triploid cytotype, little information is known about diploid plants. Therefore, phenology and resource allocation were studied on the diploid cytotype of flowering rush in three study sites (Mentor Marsh, OH; Tonawanda Wildlife Management Area, NY; and Unity Island, NY) to understand seasonal resource allocation and environmental influences on growth, and to optimize management strategies. Samples were harvested once …
Leveraging Within-Field Spatial Variability To Optimize Soybean Yield, Seed Quality, And Profitability, Marina Marly Dalla Betta
Leveraging Within-Field Spatial Variability To Optimize Soybean Yield, Seed Quality, And Profitability, Marina Marly Dalla Betta
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Optimizing yield and seed quality in soybean production is critical for both profitability and meeting market demands. However, within-field variability in soil properties poses a challenge in determining optimal management strategies to maximize soybean yield, seed quality, and profitability. This work aimed to evaluate the spatial variability of soybean fields to optimize soybean seeding rates, seed quality, and profitability. Two case studies were used to carry over this research. The first study looked at the optimal economical site-specific soybean seeding rates using 11 on-farm precision experiments across Nebraska. The second study looked at the protein and oil variability within 22 …
Nitrogen Limitation In Soybean: Physiology And Diagnosis, Luzviminda Ann Ramos Sazon
Nitrogen Limitation In Soybean: Physiology And Diagnosis, Luzviminda Ann Ramos Sazon
Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–
In high-yield soybean environments, the seed yield is limited by nitrogen (N) supply. However, the response of soybean to N fertilizer application is inconsistent. Understanding the seasonal N uptake dynamics in soybean can provide insights on diagnosing N limitation if soybean. To understand soybean N dynamics, we assessed seasonal trends on dry matter and N accumulation in vegetative organs (leaves, stems, and petioles) from 42 field experiments. Each experiment included a ‘zero-N’ treatment, where crops relied on N supply from soil and biological N fixation (BNF), and a ‘full-N’ that received ample N via N fertilizer addition. Vegetative storage proteins …
Evaluating The Roles Of Pollinators In Shaping The Floral Color Variation Of Phacelia Dubia, Katherine Riddle
Evaluating The Roles Of Pollinators In Shaping The Floral Color Variation Of Phacelia Dubia, Katherine Riddle
All Theses
Floral color variation within a species is a common occurrence and its maintenance has been a long-standing question in evolutionary biology. Differences in flower color between populations can be shaped by pollinator-mediated selection. Pollinators can exhibit innate and learned preferences for color that may influence floral color variation. These preferences may be molded by the visual environment in which pollinators forage. Most current understanding of how pollinators shape floral color variation involves dramatic differences in dominant pollinators between populations (e.g., hawkmoth vs. bee) and most behavioral work utilized model pollinators like honeybee and bumble bee. However, less is known about …
Elevation And Population Size Effects On The Survival Of Drosera Rotundifolia, Jessica Williams
Elevation And Population Size Effects On The Survival Of Drosera Rotundifolia, Jessica Williams
Electronic Theses and Dissertations
Carnivorous plants face significant conservation challenges due to habitat destruction, climate change, and illegal harvesting. This study explores how elevation and population size influence key-life history traits of D. rotundifolia, such as flowering phenology, prey capture efficiency, seed production, and germination rates. Higher elevations and larger populations are associated with extended flowering durations and increased prey capture. However, seed production and germination rates show complex patterns that are likely influenced by genetic diversity, resource availability, or environmental conditions. These insights inform targeted conservation strategies, emphasizing habitat preservation, enhancing prey availability, and maintaining genetic diversity. Public education and community engagement …
Broad-Spectrum Resistance To Fungal Foliar Diseases In Wheat: Recent Efforts And Achievements, Amira M.I. Mourad, Asmaa A.M. Ahmed, P. Stephen Baenziger, Andreas Börner, Ahmed Sallam
Broad-Spectrum Resistance To Fungal Foliar Diseases In Wheat: Recent Efforts And Achievements, Amira M.I. Mourad, Asmaa A.M. Ahmed, P. Stephen Baenziger, Andreas Börner, Ahmed Sallam
Department of Agronomy and Horticulture: Faculty Publications
Wheat (Triticum spp.) is one of the most important cereal crops in the world. Several diseases affect wheat production and can cause 20-80% yield loss annually. Out of these diseases, stripe rust, also known as yellow rust (Puccinia striiformis f. sp. tritici), stem rust (Puccinia graminis f. sp. tritici), leaf rust (Puccinia recondita), and powdery mildew (Blumeria graminis f. sp. tritici) are the most important fungal diseases that infect the foliar part of the plant. Many efforts were made to improve wheat resistance to these diseases. Due to the continuous advancement in …
Disentangling Genotype And Environment Specific Latent Features For Improved Trait Prediction Using A Compositional Autoencoder, Anirudha Powadi, Talukder Zaki Jubery, Michael C. Tross, James C. Schnable, Baskar Ganapathysubramanian
Disentangling Genotype And Environment Specific Latent Features For Improved Trait Prediction Using A Compositional Autoencoder, Anirudha Powadi, Talukder Zaki Jubery, Michael C. Tross, James C. Schnable, Baskar Ganapathysubramanian
Department of Agronomy and Horticulture: Faculty Publications
In plant breeding and genetics, predictive models traditionally rely on compact representations of high-dimensional data, often using methods like Principal Component Analysis (PCA) and, more recently, Autoencoders (AE). However, these methods do not separate genotype-specific and environment-specific features, limiting their ability to accurately predict traits influenced by both genetic and environmental factors. We hypothesize that disentangling these representations into genotype-specific and environment-specific components can enhance predictive models. To test this, we developed a compositional autoencoder (CAE) that decomposes high-dimensional data into distinct genotype-specific and environment-specific latent features. Our CAE framework employed a hierarchical architecture within an autoencoder to effectively separate …
Industrial Hemp Biomass Negatively Affected By Herbicide Drift From Corn And Soybean Herbicides, Milos Zaric, Bruno Canella Vieira, Barbara Houston, Guilherme Sousa Alves, Samuel E. Wortman, Julie A. Peterson, Greg R. Kruger
Industrial Hemp Biomass Negatively Affected By Herbicide Drift From Corn And Soybean Herbicides, Milos Zaric, Bruno Canella Vieira, Barbara Houston, Guilherme Sousa Alves, Samuel E. Wortman, Julie A. Peterson, Greg R. Kruger
Department of Agronomy and Horticulture: Faculty Publications
The establishment of industrial hemp (Cannabis sativa L.) fields near row crops has raised concerns about the potential adverse effects of herbicide drift on hemp production. This study examined hemp susceptibility to drift of herbicides registered for use in corn and/or soybeans. Herbicide solutions (2,4-D, dicamba, glufosinate, glyphosate, imazethapyr, lactofen, mesotrione) were applied separately in the wind tunnel (3.6 m s−1 airspeed), simulating drift scenarios, with conventional TP95015EVS (TP) and air inclusion AI95015EVS (AI) flat fan nozzles calibrated to deliver 140 L ha−1 carrier volume at 230 kPa. Mylar cards and hemp plants (20–25 cm tall) were placed …
Towards An Ideal Seed Coating, J M. Scott
Towards An Ideal Seed Coating, J M. Scott
IGC Proceedings (1977-2023)
Coated pasture seeds have been formulated in the past based largely on "trial and error" with relatively few objective criteria being employed to define desirable formulations, A description of desirable propelties of various layers of seed coatings and of the seeds themselves is presented.
Lolium Endophyte Viability: Effect Of Seed Storage, M P. Rolston, J R. Crush, M D. Hare, K K. Moore
Lolium Endophyte Viability: Effect Of Seed Storage, M P. Rolston, J R. Crush, M D. Hare, K K. Moore
IGC Proceedings (1977-2023)
The effects of seed storage on the endophyte Acremonium lolii in ryegrass (Lolium perenne L.) were evaluated over 7 years. The long• term effects of 4 seed moisture contents (SMC) 8.6-13.1 %: tempemture (ambient, 5, O, -15°C) 'aitd packaging types: calico, polyethylene fi,Jm. 9-140 µm, and aluminium-polyethylene (AIP) on endophyte viability were assess·ed. • Endophyte viability was maintained by lower seed moisture content and low temperatures. In ambient warehouse conditions endophyte viability declined to zero in 12 months in calico bags,' but was maintained for 3 years at 8.6% SMC in AIP: • Endophyte viability was maintained for …
Effect Of Dormancy-Releasing Treatments On Germination Of Bahiagrass Seed, J. Jeffrey Mullahey, D S. Fisher
Effect Of Dormancy-Releasing Treatments On Germination Of Bahiagrass Seed, J. Jeffrey Mullahey, D S. Fisher
IGC Proceedings (1977-2023)
Low seed germination and dormant seed in bahiagrass (Paspalum nonatutum Flugge.) necessitate high seeding rates for successful pasture establishment. A study of dormancy-releasing treatments and age of seed on germination of bahiagrass was conducted in an incubator at the Southwest Florida Research and Education Center near Immokalee, Florida. Five seed treatments (Crop-Start (Solid Matrix Seed Priming, Kamterter Products Inc., Lincoln, NB), potassium nitrate (KNO3), heat/humidity, palea removed, and a check), 2 cullivars (Pensacola, Tifton 9) of bahiagrass and 2 ages (10 and 16 months) of seed were used. A significant (P<0.05) age ·x treatment interaction occurred for all response variables. Based on total germination at 28 days, % dormant seed and rate of germination, Crop-Start and heat/humidity were consistently the best treatments. Additional research on germination with dormancy-releasing treatments is needed to study the Interaction of seed age and bahiagrass cultivar.
Weed Seed Contamination: Use Of A Seed Testing Database To Identify Processing Limitations, J S. Rowarth, M P. Rolston, A A. Johnson
Weed Seed Contamination: Use Of A Seed Testing Database To Identify Processing Limitations, J S. Rowarth, M P. Rolston, A A. Johnson
IGC Proceedings (1977-2023)
A computerised database maintained by the Official Seed Testing Station of New Zealand provided the opporlunity to survey weed seed contamination in clover and grass seed-lots. Broad-leaf weeds such as Slierardia arvensis, Stellaria ,nedia and Chenopodium album were the major contaminants in Trifolium repens seed-lots. In grass seed-lots the main contaminants were seeds of other grasses such as Bromus hordaeceus, Vulpia spp. and Holcus lanatus. Weed seeds were found to be a major reason for downgrading or rejection from certification of clover and grass seed-lots in New Zealand; this reflects strict quality control measures.
An Investigation In To The Effect Of Some Factors On The Germination Of Erodium Seeds, Myrna Johnston, Alfredo Olivares, Gladys Fernandez
An Investigation In To The Effect Of Some Factors On The Germination Of Erodium Seeds, Myrna Johnston, Alfredo Olivares, Gladys Fernandez
IGC Proceedings (1977-2023)
Erodiurn seeds present variable dormancy in and even within each species. Thus, it is important to know the factors that determine this variation as related to the persistence of its species. E. rnoschatmn and E. rnalacoides seeds were collected at the end of the annual cycle at La Rinconada de Maipli (33°28'S and 7S050'W). Effects of seed sour.ce (collecting in 1986, 1988 and 1990), age (keeping seeds under laboratory conditions) and maternal factors (cutting plants at early flowering) were analysed. Seeds were tested for germination capacity and germination rate at a constant temperature of 15°C on Petri dishes provided with …
Long-Term Seed Dormancy In Poa Pratensis L. Northern Norway, Trygve S. Aamlid, Dagfinn Arntzen
Long-Term Seed Dormancy In Poa Pratensis L. Northern Norway, Trygve S. Aamlid, Dagfinn Arntzen
IGC Proceedings (1977-2023)
Inadequate gennination has often been obseived when planting Poa pratensis L. cv. Lavang (69°N) in northern Norwegian grasslands. This investigation was intended to elucidate whether this was due lo longterm seed dormancy, Seed-lots grown in different years in northern and southern Norway and stored at O-to•c, were germinated in Jakobsentype germinators al various combinations of temperature and light. Significant dormancy was expressed at 21 °C even after 10 years of storage. Al this constant temperature, germination was promoted by 8 h fluorescent light compared with darkness and continuous light. Al 21/ I 2°C alternating temperature, seed genninated well irrespective of …
Seed Vigour In Lucerne And White Clover, Y R. Wang, J G. Hampton
Seed Vigour In Lucerne And White Clover, Y R. Wang, J G. Hampton
IGC Proceedings (1977-2023)
Accelerated ageing (AA) was used to assess the seed vigour of 5 lucerne (Medicago sativa L, cv. Wairau) and 8 white clover (Trifolium repens L. cv. Grasslands Huia) seed-lots. Germination prior to AA ranged from 86-94% and 87-94% for the lucerne and white clover seed-lots respectively. All seed-lots hl\d been harvested in 1988 and were certified either as basic or first generation. Germination after 72 h at 40:t0.5°C (AA test) ranged frcim 31-76% for the lucerne seedlots and 15-56% for che white clover seed-lots, indicating significant differences in seed.vigour among lots of both species. Time of ageing influenced …
Growing Methods For The Morphological Assessment Of White Clover Cultivars Purity, J G. Hampton, E J. Musukwa
Growing Methods For The Morphological Assessment Of White Clover Cultivars Purity, J G. Hampton, E J. Musukwa
IGC Proceedings (1977-2023)
Three growing methods (field sward, field spaced plants, glasshouse plants) were compared for the morphological assessment of white clover (Trifolium repens L.) cultivar purity. Three cerlified (breeders, basic and first generation) seed-lots of cv. Grasslands Kopu and one first generation Kopu seed lot which had been mixed with seed of another cultivnr (10:1) were used to generate data. After analysis of variance (ANOVA), significant (P<0.05) reductions from the breeders seed lot siandnrd for leaf size, stolon number and leaf length/width ratio were recorded for the mixed seed· 101 in nil three growing methods, and for petiole length with the sward method only. With the glasshouse and spaced-plant melhods, slolon numbers of the basic and first generation seed-lots were reduced (P<0.05), while leaf size was lower (P<0.05) for the first generation seed-lot in lhe glasshouse. However, under OECD certification requirements, leaf size of the mixed seed lot was the only characler for which "off types" were detecled. Data coefficients of variation were no greater for the glasshouse method than the required OECD plot-test method.
Importance Of Tropical Pasture Seed Quality And Factors Affecting It In Smallholder Farming System, H F. Chin, C C. Wong
Importance Of Tropical Pasture Seed Quality And Factors Affecting It In Smallholder Farming System, H F. Chin, C C. Wong
IGC Proceedings (1977-2023)
Most tropical pastures are associated with and confined to smaJlholder animal production in developing countries of the tropics, with the exception of Australia. At present, tropical pasture seeds are very variable and poor in quality, as tropical herbage seed production is relatively new compared with that for temperate systems. Many tropical species are relatively wild and have yet to be domesticated and selected for pasture use, let alone for seed production characteristics. The unfavourable production and storage environment of the wet tropics, coupled with a lack of appropriate technology, also contributes towards poor quality in tropical pasture seeds. In this …
The Benefits Of Seed Quality In Intensive Temperate Forage Systems, Jeffrey J. Steiner
The Benefits Of Seed Quality In Intensive Temperate Forage Systems, Jeffrey J. Steiner
IGC Proceedings (1977-2023)
Seed quality has traditionally been considered to consist of two components: physiologic and genetic quality. The benefits of using high quality seeds have been widely documented and are generally not questioned. These henefits came about as a result of a firstgeneration of seed quality aware11ess which began more than a century ago. In intensive temperate forage production systems, the producer usually has a ready supply of high-quality seeds available for purchase. For the consumer, seed quality is not a major constraint to system productivity, However, many forage producers are not realising all of the potential benefits from using high quality …
New Realities For The Management Of Tussock Grasslands In New Zealand, I.G C. Kerr
New Realities For The Management Of Tussock Grasslands In New Zealand, I.G C. Kerr
IGC Proceedings (1977-2023)
Concerns about the potential demise of the tussock grasslands of the Soulh Island of New Zealand have been well recorded in the scientific and official literature. Little effective action has been taken to arrest the process of land degradation that has occurred during the 125 years of utilisation of !he tussock grasslands for pastoralism. A substantial decline in the pastoral productivity and conservation value of the "unimproved" tussock grasslands has been the result, Much of the cause has been the failure of the administrators and the occupiers of the high country to understand, and act on, the evidence. Occupiers and …
Integration Of Recreation With Pastoral Use And Conservation In The High Country Of South Island, New Zealand, P H. Murray, D M. Robertson, C R. Mason
Integration Of Recreation With Pastoral Use And Conservation In The High Country Of South Island, New Zealand, P H. Murray, D M. Robertson, C R. Mason
IGC Proceedings (1977-2023)
Over 3 000 000 ha of the South Island high country is Crown (i.e. Govemmcnt)-owned land, held under pastoral lease or conservation estate. There is increasing pressure from recreationists for access to land under both tenures. Permits from Crown agents, with agreement from land occupiers, are required for commercial recreation. Access for non-commercial recreation on pastoral lease land is generally through direct negotiation with the lessee. Conflicts between high country users are occurring where recreation pressure is greatest. A case study in the Remarkables Range near the mountain resort of Queenstown, shows domination by the primary users (pastoral lessees and …
Tradition And Pastoral Sustainability- An Exercise In The Applied Human Ecology Of Mountain Rangelands, David Pitt
Tradition And Pastoral Sustainability- An Exercise In The Applied Human Ecology Of Mountain Rangelands, David Pitt
IGC Proceedings (1977-2023)
The paper presents the case for regarding some traditional practices and customs as a ba��e for sustainable development in winter cold temperate rangeland pastoralism, The emphasis is on the social forms which maintain a system in which low intensity production, usufruct, kinship dynamics, co-operation, environmentally friendly practices and nomadism are maintained in the face of extreme outside pressures, A typology is elaborated including five situations: independence, coexistence, fluctuation, absorption and interaction. Case studies _are presented from the Middle East, Andes, North Africa, the Alps, the Himalaya and the former Soviet Union. Although these situations are basically historical, or at best …
Integration Of Pastoral And Non-Pastoral Uses On Temperate Rangelands With Cold Winters In Developed Countries, T J. Maxwell, W A. Laycock
Integration Of Pastoral And Non-Pastoral Uses On Temperate Rangelands With Cold Winters In Developed Countries, T J. Maxwell, W A. Laycock
IGC Proceedings (1977-2023)
The demands of the relatively wealthy and sophisticated societies of developed countries, with their substantial amounts of leisure time and discretionary income, are having an increasing impact on temperate rangelands in a variety of ways. Some parts of these societies are concerned to protect the landscapes, habitats, wildlife and solitude that can be found there, and wish to constrain any further development within these ecosystems; others also wish .to gain ready access to these resources for hunting, recreation and sport and believe that this requires the exclusion of domesticated livestock. Temperate rangelands are frequently used as water catchments and some …
Effects Of Date Of Harvest On Yield And Quality Of Meadow Fescue Seed, Uwe Simon
Effects Of Date Of Harvest On Yield And Quality Of Meadow Fescue Seed, Uwe Simon
IGC Proceedings (1977-2023)
A seed-shattering-resistant cultivar and a normal cultivar of meadow rescue (Festuca pratensis Huds.) were harvested for seed 10 times in regular intervals during a period of 30 days, The effects of harvesting time on yield, water content, germination and weight of seeds, and on costs of seed processing were studied in the 2 types of cultivar. Yield losses due to premature harvest were greater than losses due to delayed harvest. Seed losses due to shattering were smaller in the shattering-resistant cultivar compared with the normal cultivar. The water content of the seeds decreased with advancing maturity, from =50% to .. …