%0 Journal Article %T Assessment of the adoption and impact of improved pigeonpea varieties in Tanzania %A Bekele Shiferaw %A Said Silim %A Geoffrey Muricho %A Patrick Audi %J Journal of SAT Agricultural Research %D 2007 %I International Crops Research Institute for the Semi-Arid Tropics %U http://www.icrisat.org/Journal/volume5/mpii/impi2.pdf