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Yield gap analysis, which evaluates magnitude and variability of difference between crop yield potential (Yp) or water limited yield potential (Yw) and actual farm yields, provides a measure of untapped food production capacity. Reliable location-specific estimates of yield gaps, either derived f...


Wart, Justin vanBussel, Lenny G. J. vanWolf, JoostLicker RGrassini, PatricioNelson, A.Boogaard, H.Gerber JMueller NDClaessens, LievenIttersum, Martin K. vanCassman, Kenneth G.[Use of agro-climatic zones to upscale simulated crop yield potential]Use of agro-climatic zones to upscale simulated crop yield potential

The Digital Elevation Model that has been derived from the February 2000 Shuttle Radar Topography Mission (SRTM) has been one of the most important publicly available new spatial data sets in recent years. However, the ‘finished’ grade version of the data (also referred to as Version 2) still con...


Reuter, HINelson, A.Jarvis, Andy[An evaluation of void-filling interpolation methods for SRTM data]An evaluation of void-filling interpolation methods for SRTM data

Barona, ElizabethBarreto, HJCouillaud, PCox, J.A.Jiménez, P.Urbano, PLamy, FNelson, A.Farrow, AndrewLeclerc, G[Atlas de Honduras: Datos Mitch]Atlas de Honduras: Datos Mitch

CIAT programmed this simple and flexible GIS tool to automate the creation of accessibility surfaces. Previously, these surfaces were laboriously created, step-by-step, using ArcINFO software from the Environmental Systems Research Institute (ESRI). You can install the Accessibility Analyst if yo...


Farrow, AndrewNelson, A.[Modelación de la Accesibilidad en ArcView 3: Una extensión para calcular el tiempo de viaje y obtener información sobre captación de mercados]Modelación de la Accesibilidad en ArcView 3: Una extensión para calcular el tiempo de viaje y obtener información sobre captación de mercados

Nelson, A.Leclerc, GKnapp, R.[An ArcView toolkit for cross-scale raster image analysis]An ArcView toolkit for cross-scale raster image analysis

Unit-level data (individual, household or farm) from the 1988 population and 1993 agricultural censuses of Honduras have been integrated into a Geographic Information System (GIS). We showed how poverty indices can be computed for different scales of aggregation from village to country, and how t...


Leclerc, GNelson, A.Knapp, EB[The use of unit-level census data for research on poverty: a multiscale approach]The use of unit-level census data for research on poverty: a multiscale approach

Russell, N.Pratt, TNelson, A.Leclerc, G[Selected press articles about CIAT activities relates to Hurricane Mitch]Selected press articles about CIAT activities relates to Hurricane Mitch

Interannual variation in rainfall throughout Tamil Nadu has been causing frequent and noticeable land use changes despite the rapid development in groundwater irrigation. Identifying periodically water-stressed areas is the first and crucial step to minimizing negative effects on crop production....


Gumma, Murali K.Kajisa, K.Mohammed, I.A.Whitbread, Anthony M.Nelson, A.Rala, A.Kuppannan, Palanisami[Temporal change in land use by irrigation source in Tamil Nadu and management implications]Temporal change in land use by irrigation source in Tamil Nadu and management implications
Carvajal-Yepes, MonicaCardwell, K.Nelson, A.Garrett, K. A.Giovani, B.Saunders, D.G.O.Kamoun, S.Legg, J. P.Verdier, ValérieLessel, J.Neher, R. A.Day, R.Pardey, P.Gullino, M. L.Records, A. R.Bextine, B.Leach, J. E.Staiger, SimoneTohme, Joseph M.[A global surveillance system for crop diseases]A global surveillance system for crop diseases

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