Branding/Logomark minus Citation Combined Shape Icon/Bookmark-empty Icon/Copy Icon/Collection Icon/Close Copy 7 no author result Created with Sketch. Icon/Back Created with Sketch. Match!
Martin Smith
Food and Agriculture Organization
15Publications
11H-index
14.2kCitations
Publications 15
Newest
Published on Jan 1, 2015in Agricultural Water Management 3.54
Luis S. Pereira51
Estimated H-index: 51
(Instituto Superior de Agronomia),
Richard G. Allen52
Estimated H-index: 52
(UIdaho: University of Idaho)
+ 1 AuthorsDirk Raes38
Estimated H-index: 38
(Katholieke Universiteit Leuven)
Abstract The FAO Irrigation and Drainage Paper No 56 on Crop Evapotranspiration has been in publication for more than 15 years. The paper advanced the accuracy and consistency of operational computation of evapotranspiration (ET) for agricultural and other land use types. The paper included updated definition and procedures for computing reference ET, an update on estimating crop coefficients ( K c ), the adoption of the dual K c for separate estimation of crop transpiration and soil evaporation...
144 Citations Source Cite
Published on Mar 1, 2006in Agricultural Water Management 3.54
Richard G. Allen52
Estimated H-index: 52
(UIdaho: University of Idaho),
William O. Pruitt11
Estimated H-index: 11
(UC Davis: University of California, Davis)
+ 14 AuthorsJavier Baselga Yrisarry1
Estimated H-index: 1
Abstract Continued development of networks of electronic weather stations worldwide has increased the availability of weather data for calculating ET o on an hourly basis. There has been question and debate as well as studies on the appropriate expression and parameterization for the surface resistance ( r s ) parameter of the Penman-Monteith (PM) equation and the associated coefficient for the reduced form FAO-PM equation when applied hourly. This paper reviews the performance of the FAO-PM met...
267 Citations Source Cite
Published on Aug 1, 2005in Agricultural Water Management 3.54
Delphine Luquet18
Estimated H-index: 18
,
Alain Vidal8
Estimated H-index: 8
+ 1 AuthorsJean Dauzat17
Estimated H-index: 17
Abstract In countries facing water scarcity, governmental water agencies try to transfer this constraint to farmers, e.g. by encouraging them to shift from traditional to localized irrigation methods to save water. However, water shortage is often much less a problem for farmers than soil limitations, their objective being mostly to maximize their income per cultivated area (US$ per hectare rather than per cubic meter of water). This discrepancy can only be solved if governments find ways to ‘tr...
47 Citations Source Cite
Richard G. Allen52
Estimated H-index: 52
(UIdaho: University of Idaho),
Luis S. Pereira51
Estimated H-index: 51
(Technical University of Lisbon)
+ 2 AuthorsJames L. Wright22
Estimated H-index: 22
(USDA: United States Department of Agriculture)
Crop coefficient curves provide simple, reproducible means to estimate crop evapotranspiration (ET) from weather-based reference ET values. The dual crop coefficient sKcd method of the Food and Agricultural Organization of the United States (FAO) Irrigation and Drainage Paper No. 56 (FAO-56) is intended to improve daily simulation of crop ET by considering separately the contribution of evaporation from soil. The dual method utilizes "basal" crop coefficients representing ET from crops having a ...
244 Citations Source Cite
Richard G. Allen52
Estimated H-index: 52
,
William O. Pruitt11
Estimated H-index: 11
(University of California, Berkeley)
+ 2 AuthorsLuis S. Pereira51
Estimated H-index: 51
The crop coefficient during the initial period sKc inid varies with wetting frequency, evaporative demand, and water-holding capacity of the upper soil layer. It is possible to develop a semitheoretical integrated function to predict the average Kc ini representing the initial period of a growing season when the soil is mostly bare and that incorporates these three factors. The function is based on a two-stage evaporation function as used in the Food and Agriculture Organization Irrigation and D...
56 Citations Source Cite
Published on Jan 1, 2002
Dirk Raes38
Estimated H-index: 38
,
Martin Smith11
Estimated H-index: 11
+ 2 AuthorsAmos Makarau6
Estimated H-index: 6
6 Citations
Published on May 12, 2001
Richard G. Allen52
Estimated H-index: 52
,
Martin Smith11
Estimated H-index: 11
+ 2 AuthorsJames L. Wright22
Estimated H-index: 22
In 1998, the Food and Agriculture Organization of the United Nations (FAO) published FAO Irrigation and Drainage Paper No. 56, a revision of the earlier and widely used Paper No. 24 for calculating evapotranspiration (ET) and crop water requirements. The revision uses a single method, the FAO Penman-Monteith equation, for calculating reference evapotranspiration (ET o ). In addition to the “mean” crop coefficient (K c ) values of FAO-24, FAO-56 provides tables of “basal” crop coefficients that r...
5 Citations Source Cite
Published on Jun 1, 2000in Agricultural and Forest Meteorology 4.19
Martin Smith11
Estimated H-index: 11
(FAO: Food and Agriculture Organization)
Abstract Sustainable food production will depend on the judicious use of water resources as fresh water for human consumption and agriculture is becoming increasingly scarce. To meet future food demands and growing competition for clean water, a more effective use of water in both irrigated and rainfed agriculture will be essential. Options to increase water use efficiency include the conservation of rainfall, the reduction of irrigation water losses and the adoption of cultural practices that w...
125 Citations Source Cite
Published on Jan 1, 2000
R. Allen2
Estimated H-index: 2
,
Martin Smith11
Estimated H-index: 11
+ 2 AuthorsJames L. Wright22
Estimated H-index: 22
Published on Jan 1, 1998
Richard G. Allen52
Estimated H-index: 52
,
Luiz Antonio Souza Pereira3
Estimated H-index: 3
+ 1 AuthorsMartin Smith11
Estimated H-index: 11
This publication presents an updated procedure for calculating reference and crop evapotranspiration from meteorological data and crop coefficients. The procedure, first presented in FAO Irrigation and Drainage Paper No. 24, Crop water requirements, in 1977, allows estimation of the amount of water used by a crop, taking into account the effect of the climate and the crop characteristics. The publication incorporates advances in research and more accurate procedures for determining crop water us...
12.7k Citations
12