Apr 30, 2015 by Melanie Bacou

HarvestChoice releases over 500 newly-updated indicators for Africa South of the Sahara at 10 km resolution.

HarvestChoice data release r2.5

Oct 7, 2013 by Naomie Sakana

HarvestChoice is bringing together user-friendly tools, analytical know-how, and layers of big data to tell the story of where in sub-Saharan Africa and inform investment decisions as part of the G-8 initiative, New Alliance for Food Security and Nutrition.

Jul 9, 2013 by Kate Sebastian

Last March at the Africa Agriculture GIS Week in Addis Ababa, Ethiopia, HarvestChoice team member Kate Sebastian presented the not-so-sneak preview of the Atlas of African Agriculture Research and Development.

Apr 12, 2013 by Jason Beddow

Stem rust is a potentially devastating fungal disease that can kill wheat plants and small grain cereals, but more typically reduces foliage, root growth, and grain yields. The pathogen multiplies rapidly, and its spores can be dispersed by wind over thousands of kilometers.

Photo credit: CIMMYT

Jun 18, 2012 by Cindy Cox

The June 2012 issue of Insights, IFPRI’s quarterly magazine, talks up HarvestChoice’s increasingly popular online tool: MAPPR. So friendly to use that a writer and a graphics designer combined wits to create the MAPPR-generated visuals for the article.

Apr 17, 2012 by Jeff Horwich

Risk: we all know what that means, right? But why is it such a critical part of our HarvestChoice portfolio, what does it mean when you look through the lens of farming in Sub-Saharan Africa?

Dec 16, 2010 by Jawoo Koo

Long-term yield trials are great resources for agricultural researches in multiple disciplines, but such dataset have not been readily available in Sub-Saharan Africa. The Hatfield Experimental Farm in Pretoria, South Africa, is an exceptional case that has been providing maize yield and fertilizer trial dataset with 32 treatments since 1939. In collaboration with University of Pretoria, HarvestChoice facilitated the re-discovery of raw yield dataset from the trial to study the measured long-term yield variability.

Long-term maize trial plots at the Hatfield Experimental Farm, U of Pretoria

Dec 2, 2010 by Jawoo Koo

Mapping the global extent of soil constraints to crop growth plays an important role in developing strategies for agricultural production, environmental protection, and sustainable development at regional and global scales. The most widely used dataset is the Soil Fertility Capability Classification System (FCC) developed by Center for International Earth Science Information Network (CIESIN) and the Tropical Agriculture Program of the Earth Institute at Columbia University. HarvestChoice facilitated developing an updated version of FCC using the Harmonized World Soil Database v1.1. This new dataset will play a key role in HarvestChoice's forthcoming flagship study on the biophysical/economic impact assessment of agricultural production constraints in Sub-Saharan Africa.

ALUMINUM TOXICITY (A MODIFIER)

Aug 12, 2010 by Jawoo Koo

As a quick demonstration to estimate crop yield levels at regional-scale with various management assumptions, this post describes how crop systems models can be used to assess yield gap of rainfed maize due to the limited supply of soil nitrogen. This methodology can help researchers to find what is the most critical factor that limits crop yield productivity in a given environment condition and how to address the constraint.

Aug 10, 2010 by Jawoo Koo

By modeling the decomposition of soil organic matter dynamics, crop systems models can simulate the effects of soil nutrient depletion under low-input extractive field management practices, as well as soil carbon sequestration under regenerative management practices.

Maize