Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Marvin E. Jensen"'
Autor:
Richard G. Allen, Ivan A. Walter, Ronald L. Elliott, Terry A. Howell, Daniel Itenfisu, Marvin E. Jensen, Richard L. Snyder
This report provides standardized equations for calculating reference evapotranspiration (ET) from weather data and procedures for quality assessment and control of weather data.
MOP 70 is a comprehensive reference to estimating the water quantities needed for irrigation of crops projects based upon the physics of evaporation and evapotranspiration (ET).
Publikováno v:
Journal of Irrigation and Drainage Engineering. 139:463-475
The ASCE Standardized Reference Evapotranspiration (ET) Equation expects wind speed measured at a height of 2 m over and downwind of a smooth measurement surface, such as actively growing clipped grass. Many agricultural weather stations used for eva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee0d7838478ca6586605c2f0f7a5dfed
https://doi.org/10.1061/(asce)ir.1943-4774.0000570
https://doi.org/10.1061/(asce)ir.1943-4774.0000570
Publikováno v:
Agricultural Water Management. 98:921-929
Researchers and journal authors, reviewers and readers can benefit from more complete documentation of published evapotranspiration (ET) information, including description of field procedures, instrumentation, data filtering, model parameterization,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fbcd541f551726dcdd9852472c5c94d
https://doi.org/10.1016/j.agwat.2010.12.016
https://doi.org/10.1016/j.agwat.2010.12.016
Publikováno v:
Agricultural Water Management. 98:899-920
More and more evapotranspiration models, evapotranspiration crop coefficients and associated measurements of evapotranspiration (ET) are being reported in the literature and used to develop, calibrate and test important ET process models. ET data are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8867c50e35f14bac272b6c2dd6fbc24
https://doi.org/10.1016/j.agwat.2010.12.015
https://doi.org/10.1016/j.agwat.2010.12.015
Autor:
Marvin E. Jensen
Publikováno v:
Irrigation Science. 25:233-245
Parameters for accounting for water balance on irrigation projects have evolved over the past century. Development of the classic term irrigation efficiency is summarized along with recent modifications such as effective irrigation efficiency. The ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f57df3c2e6e05176d4e16d898db8f0d8
https://doi.org/10.1007/s00271-007-0060-5
https://doi.org/10.1007/s00271-007-0060-5
Autor:
Richard G. Allen, Marvin E. Jensen
Publikováno v:
2015 ASABE / IA Irrigation Symposium: Emerging Technologies for Sustainable Irrigation - A Tribute to the Career of Terry Howell, Sr. Conference Proceedings.
The 2nd edition of Manual 70 prepared by the ASCE Task Committee on Evapotranspiration (ET) in Irrigation and Hydrology and edited by Marvin E. Jensen and Richard G. Allen has been released in 2015 by the American Society of Civil Engineers (ASCE) af
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1328bf5df9543592865ff896ac769790
https://doi.org/10.13031/irrig.20152143358
https://doi.org/10.13031/irrig.20152143358
Autor:
Dick Piper, Donald R. Nielsen, John Letey, Earl Burnett, L. G. King, R. E. Highfill, R. John Hanks, Marvin E. Jensen, Edward T. Kanemasu, Jack J. Bond, Francis H. Siddoway, Raymond R. Allmaras, Donald G. Hanway, Melvin D. Skold
Publikováno v:
Soil and Water Resources: Research Priorities for the Nation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6677f3f425f8f1baa84bfa083f275498
https://doi.org/10.2136/1981.soilandwaterresources.c4
https://doi.org/10.2136/1981.soilandwaterresources.c4
Publikováno v:
Irrigation of Agricultural Lands
The term "irrigation efficiency" has been used extensively during the past 30 years to express the performance of a complete irrigation system or components of a system. Though specifically defined by its users, on occasion, irrigation efficiency is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58420bd94d5d2027a0768283b380864a
https://doi.org/10.2134/agronmonogr11.c66
https://doi.org/10.2134/agronmonogr11.c66
Publikováno v:
Irrigation of Agricultural Lands
In surface irrigation, water is conveyed to the point of infiltration directly on the soil surface. Thus, the soil surface may be considered as the conveyance channel boundary. Surface irrigation channels vary widely in shape, size, and hydraulic cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1926218dd42fbdc5461ca6fa3da0f94
https://doi.org/10.2134/agronmonogr11.c48
https://doi.org/10.2134/agronmonogr11.c48