In the first year, the N plants were taller than the I plants because the chickpea plants were short (30 cm) and did not compete strongly against the I pigeonpea whereas there was considerable mutual shading in the N row. At the end of the second year, differences between the I and N plants had widened in grain yield from 1.48 to 3.46 times and in stem diameter from 1.16 to 1.43 times.