I'm looking for any other datasets and open access pubs on affiliation/bipartite networks using survey data from farmers/community members in rural Africa.
The UN Food & Agriculture Organization (FAO) collects and publishes a lot of data on Africa related to farming.
Here's the entry point into the FAO's Statistics Database (FAOSTAT):
Here's the link to the World Bank's datasets on Farming in Rural Areas of the World:
The CGIAR/CCAFS program at Harvard University collects and publishes data surveys related to Agriculture in Africa:
Here's an example of where Columbia University has used the FAO data:
Here's an example of where Australian Centre for International Agricultural Research has used FAO data on farming in Africa
Here's a dataset from 2012 covering 35 million hectacres of farm land in 66 countries that has been bought up by foreign firms:
You might also want to keep an eye on the independent think tanks & research organisations that post their data on openAFRICA.net.
The International Livestock Research Institute (ILRI), for example, maintains ~115 Africa-specific datasets on the portal. Here's the link: http://africaopendata.org/organization/ilri
Also recommend checking USAID's Development Data Library (DDL), where datasets on developing countries are added on a regular basis.