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Registros recuperados: 6
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Do Native and Invasive Labels Affect Consumer Willingness to Pay for Plants? Evidence from Experimental Auctions AgEcon
Yue, Chengyan; Hurley, Terrance M.; Anderson, Neil O..
The ultimate objective of commercial horticultural activities is to satisfy the needs of the final consumer. Consumer demand for novel plants drives the ornamental plant industry. Therefore, dispersal of native and invasive horticultural plants can be understood by considering the decisions/choices of consumers who decide which plants to purchase from retailers. In contrast to previous studies on invasive and native plants, this study uses an experimental auction to elicit consumers’ willingness to pay (WTP) for labeled native and invasive attributes. Results from a censored random effect model show that consumers’ WTP for plants decreases when the plants are labeled as invasive and increases when plants are labeled as native. The study finds that...
Tipo: Conference Paper or Presentation Palavras-chave: Native plants; Invasive plants; Willingness to pay; Labeling; Auction; Marketing; Consumer/Household Economics; Demand and Price Analysis.
Ano: 2009 URL: http://purl.umn.edu/49212
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Eco-genetic study on water hyacinth, Eichhornia crassipes (Mart.) Solms, the world's most invasive aquatic plant CIGR Journal
El-Shahawy, Tarek Abd El-Ghafar.
Water hyacinth is a complicated, multifaceted problem disturbs all interested and concerned entities in aquatic weed management. Water hyacinth, which is the world's most aggressive and destructive aquatic freshwater species, extends over vast areas of the world creating serious ecological and cultural problems. So far, water quality does not represent a dilemma against water hyacinth growth. The objective of the current work is to study the potential genetic differences between water hyacinth populations growing under different aquatic ecosystems in Egypt. Water and plant samples were collected from three different sites namely irrigation water, drainage water and sewage water at Al-Buhayrah Governorate, Damanhour District. The physicochemical properties...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Botany; Weed biology and control Aquatic weeds; Aquatic ecosystems; Genetic variation; Heavy metals; Invasive plants; Water quality.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4392
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Morphological Plasticity and Gas Exchange of Ligustrum lucidumW.T. Aiton in Distinct Light Conditions BABT
Larcher,Letícia; Nogueira,Guilherme; Boeger,Maria Regina.
ABSTRACT The objective of this study was to understand the different morpho-physiological strategies of Ligustrum lucidum, an invasive species occurring in Brazilian forest fragments under heterogeneous light conditions. Ten individuals of L. lucidum were selected and evaluated for morphological of the leaves and physiological traits. For morphological parameters were evaluated: length, width, area, angle, petiole length, dried mass, total thickness, palisade parenchyma and spongy parenchyma thickness, abaxial and adaxial epidermis thickness, stomata density, leaf density and specific leaf area. The physiological traits were vapor-pressure deficit, assimilation rate, CO2 sub-stomata concentration, intrinsic water-use efficiency, transpiration rate and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Invasive plants; Phenotypic integration; Assimilation rates; Glossy privet.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000600877
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Multiregional Invasive Species Management: Theory and an Application to Florida's Exotic Plants AgEcon
Kim, C.S.; Lee, Donna J.; Schaible, Glenn D.; Vasavada, Utpal.
This research develops a multiregional optimal control model that incorporates regional allocation of a public budget for controlling invasive plants when regionally differential recreation demand functions and species control costs are present. Our equimarginal condition for optimal budget allocation equates the relative marginal economic benefits per dollar spent across regions. The model was applied to Florida Public Conservation Land regions, and results indicate that the magnitude of an annual management budget affects its distribution among species management regions, but the size of the intrinsic growth rate does not affect the pattern of budget allocation among regions.
Tipo: Journal Article Palavras-chave: Budget allocation; Equimarginal condition; Florida invasive species; Invasive plants; Optimal control; B41; C02; Q51; Q57.
Ano: 2007 URL: http://purl.umn.edu/37141
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Reproduction of Pratylenchus zeae on Weeds Planta Daninha
BELLÉ,C.; KASPARY,T.E.; KUHN,P.R.; SCHMITT,J.; LIMA-MEDINA,I..
ABSTRACT Weeds can be hosts of root-lesion nematode (Pratylenchus spp.), maintaining or increasing their population in the soil. The objective of this study was to evaluate the reaction of 25 weeds species to the nematode Pratylenchus zeae. The weed plants were individually inoculated with 1,000 individuals of P. zeae and maintained in a greenhouse for 90 days. After this period, eggs and nematodes were extracted, quantified, and the reproduction factor (RF = final population/initial population) was calculated. All tested weeds were susceptible (RF>1) to P. zeae, and the species Brachiaria decumbens, Rhynchelytrum repens, Digitaria insularis, D. horizontalis, B. brizantha were the most susceptible to this parasite.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Invasive plants; Susceptibility; Lesion nematode; Parasite.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100203
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Selection of alfalfa genotypes for resistance to the foliar pathogen Curvularia geniculata Anais da ABC (AABC)
ÁVILA,MARIANA R.; DALL’AGNOL,MIGUEL; MARTINELLI,JOSÉ A.; SILVA,GERARDA B.P. DA; BREMM,CAROLINA; NUNES,TAMYRIS.
ABSTRACT Foliar diseases impose severe restrictions on the persistence and productivity of Medicago sativa, both of which may be increased by developing disease resistant and more competitive genotypes that can improve pasture quality. We found Curvularia geniculata as the principal alfalfa foliar pathogen in the Brazilian state of Rio Grande do Sul (RS). Growth chamber experiments evaluated the resistance of alfalfa genotypes ‘E1C4’, ‘CPPSul’, ‘ABT 805’ and ‘CUF-101’ to C. geniculata as compared the control ‘Crioula’ genotype. These genotypes were also evaluated in field trials at a sea level site in Eldorado do Sul in central RS and at two sites £200 m above sea level, one in Bagé municipality in south west RS and the other at a farm near the town of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lucerne; Invasive plants; Foliar pathogen; Forage legumes.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401801
Registros recuperados: 6
Primeira ... 1 ... Última
 

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