• Harvested area and physical area both reported in hectares. Production is reported in tons. (Note groundnut production is measured in the shell) Yield units in SPAM are kilograms / hectare. More specifically, yields are reported for wet crops, as in...

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  • Your comments and feedback are highly appreciated.  We also value any basic statistics data (crop area, production, yield), that you can share.  Accurate statistical data at the subnational level is an important driver in generating and improving...

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  • Why is there no maize in my backyard? While SPAM results show accurate crop patterns, the uncertainty at farm level is high. Such uncertainty is from multiple sources such as uncertainty of cropland estimation from satellite imagery, wrong census data...

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  • What’s the plan for the next version/generation of SPAM? We will continue to improve our model as more and more remote sensing data are available. On one hand, we would improve SPAM 2000 results by incorporating comments/feedbacks from users...

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  • What’s ISPAM? ISPAM stands for IFPRI Spatial Production Allocaiton Model, an alternative name for SPAM. Any plan to change the name? No. While we understand the (not so good) implication of SPAM, we have not come to a better name. If you have...

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  • How was SPAM started? During the project of “policies on food, agriculture and the environment, indicators and priorities for Agricultural research in Latin American and the Caribbean (LAC)”, we need to account for spatial heterogeneity...

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  • I’m doing a quick study on rice methane emissions and would like to see if the SPAM rice categories (irrigated, rainfed/high-input, rainfed/low-input) could be translated to irrigated, flooded and upland rice. How do the SPAM categories work...

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