Consulta: subjectFacets:"Site-specific"
Registros recuperados: 5
Data/hora: 09/06/2024 05:37:16

ANALYSIS OF SOIL FERTILITY TESTING PROCEDURES USING UNIFORM, TOPOGRAPHICAL AND OTHER SITE-SPECIFIC METHODS
Provedor de dados: 31
Autores: Haugen,   Ronald H.; Aakre,   Dwight G.
This study summarizes an analysis of uniform, topographical and other site-specific soil fertility testing procedures based on observations of various crops at various locations in North Dakota and one location in Minnesota for 2001 through 2004. Results showed little difference in economic returns among the soil fertility testing methods by crop or location.
Tipo: Working or Discussion Paper
Palavras-chave: Fertility; Topography; Soil testing; Site-specific; North Dakota; Land Economics/Use.
Ano: 2005
URL: http://purl.umn.edu/23580

Tailored Regulation: Will Voluntary Site-Specific Environmental  Performance Standards Improve Welfare?
Provedor de dados: 31
Autores: Blackman,   Allen; Boyd,   James.
Increasingly popular tailored regulation (TR) initiatives like EPA's Project XL allow plants to voluntarily substitute site-specific environmental performance standards for command-and-control regulations that dictate pollution abatement strategies. TR can significantly reduce participants' costs of complying with environmental regulations. But in doing so, it can also provide participants with a competitive advantage. We show that this can have undesirable welfare consequences when it enables relatively inefficient firms in oligopolistic markets to "steal" market share from more efficient firms. One critical determinant of whether or not TR has such adverse welfare impacts is the regulator's policy regarding the diffusion of TR agreements among...
Tipo: Working or Discussion Paper
Palavras-chave: Tailored regulation; Voluntary; Site-specific; Performance standards; Regulatory reform; Environmental Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/10740

Development and comparative evaluation of radiation-based reference evapotranspiration equations for sub-humid Hazaribagh region of Jharkhand
Provedor de dados: 111
Autores: ARVIND SINGH TOMAR; GBPUAT, PANTNAGAR.
In this study, two site-specific solar radiation (Rs) and net radiation (Rn) based equations for estimating reference evapotranspiration (ET­0) were developed and their performance were statistically analysed in comparison to widely accepted FAO Penman-Monteith method (PMF-56) and four other standard radiation methods for sub-humid Hazaribagh region of Jharkhand. These two equations were developed with daily values of Rs and Rn in conjunction with maximum and minimum air temperature by taking daily PMF-56 ET0 values as index with weather dataset of 15 years (1990-2004). The performance of these equations validated with carefully screened daily weather dataset of eight years (2005-2012) with other considered standard methods revealed that they estimated ET0...
Palavras-chave: Site-specific; Radiation; Statistical performance; India.
Ano: 2015
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3121

Development and comparative evaluation of radiation-based reference evapotranspiration equations for sub-humid Hazaribagh region of Jharkhand
Provedor de dados: 111
Autores: TOMAR, ARVIND SINGH.
In this study, two site-specific solar radiation (Rs) and net radiation (Rn) based equations for estimating reference evapotranspiration (ET­0) were developed and their performance were statistically analysed in comparison to widely accepted FAO Penman-Monteith method (PMF-56) and four other standard radiation methods for sub-humid Hazaribagh region of Jharkhand. These two equations were developed with daily values of Rs and Rn in conjunction with maximum and minimum air temperature by taking daily PMF-56 ET0 values as index with weather dataset of 15 years (1990-2004). The performance of these equations validated with carefully screened daily weather dataset of eight years (2005-2012) with other considered standard methods revealed that they estimated ET0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Site-specific; Radiation; Statistical performance; India.
Ano: 2015
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3121

Spatial variability of the competitive effect of Barley (Hordeum vulgare L.) on Lolium rigidum L.
Provedor de dados: 115
Autores: Izquierdo,Jordi; Fernández-Quintanilla,César.
Lolium rigidum is a major grass weed of winter cereals in the Mediterranean area, in spite of the continuous use of herbicides in these crops. New management approaches focus on the reduction of the seed banks by enhancing crop competitiveness and, consequently, minimizing weed seed rain. However, the spatial heterogeneity that exists within fields results in differences in the growth and the competitiveness of crops and weeds. In order to determine if the competitive interactions between barley and L. rigidum are site-specific biomass and seed production of this weed, growing in monoculture (plots with L. rigidum) and in mixed culture (plots with L. rigidum+barley), were studied at three sites (in upland, mid-slope and lowland positions) within barley...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hordeum vulgare; Crop competition; Seed rain; Site-specific; Topography; Weed biomass.
Ano: 2010
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952010000100004