The experiment was conducted at Students Research Farm, Khalsa College, Guru Nanak Dev University, Amritsar, Punjab, during the rainy (kharif) season of 2020-21, to study the effect of different row spacing and intercropping systems on growth and yield of ‘Pusa Arhar 16’ pigeonpea Cajanus cajan (L.) Millsp.. Results showed that, number of branches/plant and yield attributes were significantly higher under 100 cm x 20 cm than in 50 cm x 20 cm, while the seed yield of pigeonpea (1.41 tonnes/ha) andpigeonpea-equivalent yield (1.78 tonnes/ha) were found significantly higher under narrow spacing 50 cm x 20 cm than wider spacing, i.e., 100 cm x 20 cm (1.02 and 1.33 tonnes/ha). Higher net returns (80.4 x 103 /ha) and benefit: cost (B : C) ratio (4.08)were recorded in 50 cm x 20 cm than in 75 cm x 20 cm (73.4 x 103 /ha and 3.84) and 100 cm x 20 cm (53.9 x 103 /ha and 3.10). Among the different intercropping systems, pigeonpea + pearlmillet Pennisetum glaucum (L.) R. Br. fodder gave the maximum pigeonpea-equivalent yield of 1.85 tonnes/ha, being superior to 1.31 tonnes/ha in sole pigeonpea and 1.38 tonnes/ha of pigeonpea + fingermillet, while it was at par with pigeonpea + greengram Vigna radiata (L.) R. Wilczek (1.80 tonnes/ha). Pigeonpea + pearlmillet fodder fetched higher net returns (84.8 x 10~3 /ha) and B : C (4.25) ratio among the different intercropping systems.
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