2 edition of Crop-water production functions found in the catalog.
Crop-water production functions
Paul G Hoyt
by U.S. Dept. of Agriculture, Economic Research Service, Natural Resource Economics Division in [Washington, D.C.]
Written in English
|Statement||Paul G. Hoyt|
|Series||ERS staff report -- no. AGES 840427|
|Contributions||United States. Dept. of Agriculture. Natural Resource Economics Division|
|The Physical Object|
|Pagination||19 p. :|
|Number of Pages||19|
A review of simplified crop-water production functions, with a proposal for modifiation: Author(s) Sorbello Herrendorf, V.R. Source: Wageningen: International Institute for Land Reclamation & Improvement - Department(s) International Institute for Land Reclamation and Improvement: Publication type: Scientific book (author) Publication year. Crop-water production functions Crop-water production functions relate seasonal water use to crop yield. Previous efforts to represent the crop-water production function have suggested adopting the general shape of, or ﬁtting ﬁeld data to linear (Barrett and Skogerboe, ; English, ;.
The water running off the field cannot contribute to crop production, so the crop-water production function can only be based on the amount of infiltrated water. The runoff water has economic implications that must be accounted for separately. Crop water production function and its temporal and spatial variation regulation Since crop water production function reveals how crop yield varies with the water variation, it has served as the basis for scientific water saving irrigation. As a matter of fact, crop water production function has always been the research focus.
CROP WATER PRODUCTIVITY: CAN IT BE MONITORED? World Water Week Stockholm, 23 August , The development of technology tools for achieving food security, especially in crop water usage goes faster and faster. One of these new tools is the use of near real-time available data on crop water productivity, obtained from satellite images. The link between the agricultural production and hydrological systems in integrated hydro‐economic models is the crop‐water production function. Crop‐water production functions used in hydro‐economic models commonly describe crop yield returns to total seasonal irrigation inputs.
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Simulated crop-water production functions for several crops when irrigated with saline waters (Hilgardia) [John Letey] on *FREE* shipping on qualifying : John Letey. The crop water production function developed in this Crop-water production functions book can be used to predict the effect of water stress on yield loss and consequent farm profit loss, which is essential in planning for.
Crop-Water Production Function Model for a Saline Irrigation Waters, Soil Science Society of America Journal, 49, pp. – CrossRef Google Scholar Letey, J. and Dinar, A, Cited by: 6. The book presents articles on irrigation scheduling and applied timing criteria; the problem of energy utilization and management in irrigation; and the relationship between irrigation requirements and crop response in terms of crop-water production functions.
The text also includes articles on the development and prospects of irrigation in Australia, as well as the application of a plant-environment Book Edition: 1. Water Use in Crop Production will enable you enhance crop quality and quantity and save one of the earth's most important resource.
Comprehensive and thorough, this essential book combines two vital needs, food and water, and examines what must be done in order to keep up with the ever-growing human population.
Crop water production function is the relationship between obtained marketable yield and the total amount of water used by plant through evapotranspiration. Different mathematical expressions have been derived from field experiments to predict yield knowing water use.
Such expressions provide a powerful tool in water allocation optimization. CROP-WATER PRODUCTION FUNCTIONS 63 (2) Another measure of desirability frequently encountered in the irrigation literature is that of maximum water use efficiency. Maximum water use efficiency is said to exist when the crop yield per unit of water input is by: Crop‐water production functions were computed for tall fescue (Festuca elatior arundinacea L.) for various levels of salinity in the irrigation water.
A comparison was made between calculated and published experimentally measured values of leaching fractions and yields of tall fescue grown under conditions of various irrigation water. Crop-water production functions (CWPFs) are a useful tool for irrigation planning, but derivation of CWPFs by field experimentation is expensive, and traditional analytical techniques are not well suited to derivation of by: This publication is intended to provide guidance in determining crop water requirements and their application in planning, design and operation of irrigation projects.
Part presents suggested methods to derive crop water requirements. The use of four well-known methods for determining such requirements is defined.
Water Use in Crop Production will enable you enhance crop quality and quantity and save one of the earth's most important hensive and thorough, this essential book combines two vital needs, food and water, and examines what must be done in order to keep up with the ever-growing human population.
de Juan, J.A., Tarjuelo, J.M., Valiente, M., Garcia, P.: Model for optimal cropping patterns within the farm based on crop water production functions and irrigation uniformity I: Development of a decision model.
Agricultural Water Managem – () CrossRef Google Scholar. Crop-water production functions are estimated for corn, soybeans, and sugar beets grown in Colorado with two irrigation efficiency levels. Farmers with high-cost water can conserve water and increase profits by applying profit- rather than yield-maximizing water quantities if crop prices are low.
Application efficiencies. have a greater effect on profits at high water costs, but a greater. Crop-water production functions [microform]: economic implications for Colorado / Paul G. Hoyt; Crop-water production functions and economic implications for the Texas High Plains region [microform] Crop-water production functions and economic implications.
The seasonal model is particularly useful in producing crop‐water production functions which account for both salinity and irrigation uniformity for conditions where the water table does not contribute significantly to the water supply of the crop. Get this from a library. Crop-water production functions and economic implications for the Texas High Plains region.
[Paul G Hoyt; United States. Department of. Get this from a library. Crop-water production functions and economic implications for Washington. [Harry Ayer; United States. Department of Agriculture. Natural Resource Economics Division.;]. fects are sufficiently detailed. The production functions mentioned above – PFCD, PFCES and PFVES are de-scribed below.
Cobb-Douglas production function (PFCD) The following equation shows the well-known PFCD with two production factors: Y it =a i e gtA it αB it βu it, (1) where Y it is a crop yield in the region i and in the time t, a. Downloadable (with restrictions). Crop water production functions (CWPFs) are often expressed as crop yield vs.
consumptive water use or irrigation water applied. CWPFs are helpful for optimizing management of limited water resources, but are site-specific and vary from year to year, especially when yield is expressed as a function of irrigation water applied. Crop-water production functions are important tools for quantifying effects of water scarcity and climate change on agricultural production, and are also widely used within hydro-economic models to support design of inter-sectoral water management policies.
crop production functions, particularly FAO 33 method that is the most common one, for estimat ing relative yield. Since in many locations it is not possible to calibrat e and to."Soybean crop-water production functions in a humid region across years and soils determined with APEX model," Agricultural Water Management, Elsevier, vol.
(C), pages Foster, T. & Brozović, N., Gibbons examines the water supply problem through five case studies. The problems faced by these regions and the methods suggested to overcome them provide excellent models for the entire United States. The case studiestypically, expanding suppliesbut economic efficiency principles lead to emphasizing managing the demand.
In many cases, this means reducing demand by raising prices.