A field investigation was conducted in Swaziland, in 2008/2009 cropping season, to evaluate effects that different groundnut populations could exert on growth indices and crop yields in a groundnut sweetpotato association. The experiment was laid out in a randomized complete block of five treatments: [1, pure sweetpotato (33,333 plants ha -1); 2, pure groundnut (200,000 plants ha -1); 3, pure groundnut (100,000 plants ha -1); 4, sweetpotato (33,333 plants ha -1) intercropped with groundnut (200,000 plants ha -1); and 5, sweetpotato (33,333 plants ha -1); intercropped with groundnut (100,000 plants ha -1)] and replicated four times. Results showed that intercropping sweetpotato (33,333 plants ha -1) with a high groundnut population (200,000 plants ha -1) significantly (P
