Integrated Control of Potato Bacterial Wilt in Kabale District, Southwestern Uganda

In Kabale District, southwest Uganda, four sets of options for the integrated control of bacterial wilt (BW) were tested in a participatory approach with farmers between 1995 and 1999, along with experiments on crop rotation and soil amendments. Options tested for integrated control were (1) an improved package (IP) that consisted of clean seed, a less-susceptible variety (Victoria), and improved cultural practices, and (2) a farmer package (FP), which consisted of a farmers’ variety and farmers ’ seed, planted under the farmer’s cultural practices. Two additional packages were later added: clean seed of Victoria planted under farm-ers ’ cultural practices, and farmers ’ variety and seed planted under improved cultural practices. In the rotation trial, one-season rotation experiments were conducted on mildly infested fields and two-season rotation experiments were conducted on heavily infested fields. In the soil-amendment experiment, organic materials from Sesbania sesban and Leucaena diversifolia were applied in amounts sufficient to supply 100 kg N/ha either singly or combined with P and PK. Also added were NP and NPK from inorganic sources at rates that would supply 10