A field experiment was conducted during August 2017 to March 2018 to study the effect of drip irrigation and plastic mulching on growth and yield of pigeonpea. Four treatments comprising of two conventional treatments (one with water and another without water) and two drip irrigation treatments (one is drip irrigation alone and another drip irrigation coupled with plastic mulching) were tried in randomized block design with five replications. Drip irrigation coupled with plastic mulching found to be the best treatment for improving growth attributes and maximizing the yield (3.8 t/ha). Higher productivity of pigeonpea might be due to plastic mulching lead to better plant growth by changing the microclimate through conserving moisture by virtue of reducing evaporation, modifying soil moisture, controlling weeds, thus economizing the use of irrigation water. Moreover, optimum availability of moisture and nutrients to plant, results in full cell turgidity and eventually higher meristematic activity, leading to more foliage development, greater photosynthetic rate and consequently better plant growth.