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Leasing arrangements for farms with irrigation enterprisesTrock, Warren Leigh January 2011 (has links)
Digitized by Kansas State University Libraries
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Economic impacts of alternative irrigation systems under increasing irrigation water costs in southeastern ArizonaÖzsabuncuoğlu, İsmail Hakki,1942- January 1977 (has links)
Increasing irrigation water cost due to higher pump energy price and falling groundwater tables is a critical problem of the agricultural sector in Sulphur Springs Valley of Southeastern Arizona which is characterized as an arid region with low annual precipitation and high temperatures. Water saving irrigation techniques, side roll and center pivot sprinkler systems, are analyzed as alternatives of gravity irrigation. Natural gas, electricity, and diesel fuel are commonly available energy sources for pumping groundwater in the area. Four representative farm size groups, five crops, and five irrigation techniques are adopted for representative farm mixed integer programming models. The problem is treated as a complete switch from one energy source to another and twelve separate sets of computer data are developed for four farm sizes and three energy sources. Sensitivity analyses based on cotton lint price and natural gas cost variations are analyzed. The results are aggregated to determine the regional level impacts of energy source changes, cotton lint price declines, and natural gas price increases. The major conclusion of these analyses is that upland cotton is a dominant crop with wheat using residual land and water. July water and available land restrict the crop production. Increasing energy costs reduce the total annual water consumption through adopting the water saving sprinkler systems and/or crops. Under the initial conditions (cotton lint price is at $58.11/cwt and natural gas price is at $.1167 per therm) the farmers generate gross returns that cover their annual total cost. Decreasing price of cotton decreases the return above total cost and annual water consumption. Wheat production changes as a complement of upland cotton, but corn production varies as substitute because of irrigation water and land constraints and relative crop profitability.
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Predicted economic effects of environmental quality control policies on linear firm models and an application to an irrigated farm modelClark, Richard T. 02 May 1972 (has links)
Linear economic models were utilized to predict effects of various
environmental control policies on individual firms. Four different
linear models were specified and in some instances relatively
minor changes in specification were made which resulted in additional
sub-models. Models varied as to numbers and types of fixed
factors, variable cost relationships, market products, and fixed
factor requirements. Once each model or sub-model was described
five or six policies were theoretically applied to that model. Policies
used were: taxing market products, taxing variable factors,
taxing a non-market externality (external diseconomy), a standard
on the quality of the externality, subsidizing variable factors and
subsidizing fixed factors.
It was assumed that the non-market externality would be produced
in a fixed ratio with market products. Furthermore, the
assumption was made that alternative production techniques were
available to the firm. The important aspect of the various techniques
was that the proportion of the externality generated by a
market product varied by production method. Consequently, strong
emphasis in the analysis was placed on determining whether or not
a given policy could induce the firm to switch to a lower externality
generating production method.
In addition to the strictly theoretical analysis a linear irrigated
farm model was described. The farm model produced irrigation return
flows which were considered to be creating stream pollution.
From the theoretical analysis likely policies for controlling return
flows were ascertained. Some of these policies were then applied
to the farm model. Specifically, a water tax (variable factor tax)
and a constraint on delivered water were administered to the farm
model.
Based on the theoretical analysis taxing market products did
not appear to be a particularly desirable policy. For some models,
the market product tax actually increased externality production.
A tax on externality production (effluent tax) seemed to give the most
consistent effects of all policies across all models. The externality
tax either reduced or had no effect on externality production. The
biggest shortcoming of the externality tax appeared to be administrative.
Before the tax can be used the externality must be
identifiable as to source. Consequently, a search was made for
policies which generated results similar to the externality tax yet
were not subject to the same administrative problem. It appeared
that under specific conditions a variable factor tax, a tax on specialized
fixed factors or a combination of a tax-subsidy scheme could
be effective alternative policies. However, these latter policies, if
improperly applied could result in increased externality production.
Taxes as high as 65 cents per acre inch of water were applied
to the farm model. Depending on assumed conditions the water tax
resulted in reduced irrigation return flows. When labor was constrained
tax levels needed to be higher to reduce return flows compared
to the case where labor was not constrained. Placing a restraint
on delivered water also reduced return flows. Again, when
labor was constrained this policy was not as effective as when labor
was unconstrained. The water tax policy reduced net returns to the
farm model considerably more than the constraint on delivered water.
The main difference in net revenues was attributable to the total water
tax bill rather than reductions from other added costs and/or enterprise
changes. / Graduation date: 1972
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COSTS AND RETURNS TO IRRIGATION UNDER THE CENTRAL ARIZONA PROJECT: ALTERNATIVE FUTURES FOR AGRICULTURE.Bush, David Bernard. January 1984 (has links)
No description available.
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Economic impacts of salinization in irrigated agricultural land : an Arizona case studyMayorga, Maria Irles,1943- January 1988 (has links)
The dynamics of salt accumulation in the soil over time is one of major important information input needed for decision-making in regard to irrigate with saline water. As all waters contain some dissolved salts, during the irrigation these salts tend to concentrate in the soil causing depressed plant growth. Saline irrigation water, low soil permeability, inadequate drainage conditions, low rainfall and poor irrigation management all contribute to the tendency of salt accumulation in the soil. The principal salt accumulation problem of economic importance arises when non-saline soils become saline as result of irrigation. The dynamics of salt accumulation in this study, is based on the model for tracing salt distribution in the soil affected by the quantity and quality of irrigation water, amount of nitrogen and initial soil salinity. To verify the model for tracing salt distribution in the soil and to statistically estimate a crop-production function and soil salinity relation, agronomic data were used from field experiment conducted at the University of Arizona, Maricopa Agricultural Center (MAC), during the 1985 growing season and that utilized cotton variety Delta Pine 61. From the point of view of the response functions and salt accumulation in the soil, many assumptions were made before formulating the models. Results show that (1) no conclusions could be drawn with respect to the model of salt accumulation in the soil, (2) in the case of yield production function and soil salinity relation, the water quantity coeffient had an absolute value greater than one, (3) water quality and nitrogen coefficients had an absolute value less than one, (4) initial soil salinity coefficient had negative value, (5) looking for the best combination amoung the variables inputs, the marginal rate of substitution was greater than the ratio of prices, (6) the time path for soil salinity converge to a steady state conditions, and (7) the profitability of cotton irrigated with drip system is sensitive to yield increases and increases in the price of cotton.
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A study of the economic feasibility of irrigation of corn in the Marais Des Cygnes Valley, KansasEdwards, Jack Dean. January 1958 (has links)
Call number: LD2668 .T4 1958 E29 / Master of Science
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Alternative management strategies for a farm utilizing a solar powered irrigation systemLierman, Wally Kent January 1979 (has links)
No description available.
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An economic analysis for subsurface irrigation of maize in Quebec /Drouet, Marc Philippe January 1989 (has links)
The purposes of this thesis are to examine experimental results obtained with subsurface irrigation of maize in 1988, and to provide preliminary plans and an economic analysis for the subsurface irrigation of maize in Richelieu County, Quebec. A mean increase in maize yield of 3.7 % was observed in 1988 on experimental plots with subsurface irrigation at the Charbonneau farm. However, a review of results obtained at the same experimental site from 1982 to 1988 indicated that the mean increase in maize yield with subsurface irrigation was 29 %. / Plans for two possible water supply systems designed to provide 180 mm a year of irrigation water for the subsurface irrigation of 1,250 ha in Richelieu County were considered. An economic analysis indicates that subsurface irrigation using groundwater has the greatest net benefits with an internal rate of return of 22.92 % and benefit to cost ratios of 1.90, 1.72 and 1.56 for discount rates of 8 %, 10 % and 12 % respectively. However, much of the groundwater in this region is saline and its use for irrigation may need to be restricted. Subsurface Irrigation using surface water from the Yamaska River was also profitable with an internal rate of return of 17.31 % and benefit to cost ratios of 1.66, 1.46 and 1.30 for the same discount rates.
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An economic analysis for subsurface irrigation of maize in Quebec /Drouet, Marc Philippe January 1989 (has links)
No description available.
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A methodology for assessing the feasibility of riparian-based irrigation systemsVellidis, G. January 1985 (has links)
A procedure that determines the economic feasibility of irrigation and determines the instantaneous pumping demand and seasonal water use of feasible irrigation systems was developed.
A 54 year (1930-1983) precipitation record was used to determine the future probability of drought occurring in a specific location under a given set of conditions in Virginia.
Econometric models developed by Taylor, et al. (1985) were used to conduct the economic analysis. Econometric models for various ranges for center pivot, traveling gun, big gun, and portable pipe irrigation systems were utilized in the procedure.
The developed procedure was applied to the Pamunkey River area in Eastern Virginia. Projections on cumulative irrigated acreage, pumping capacity, and seasonal water use were produced. / M.S.
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