A field experiment was conducted at Agricultural College and Research Institute, Killikulam (TNAU) during Puratassipattam (Sep–Dec., 2017) to study the effect of crop geometry, fertilizer levels and foliar nutrition on the yield attributes, yield and economics of irrigated blackgram. The experiment was laid out in randomized block design and replicated thrice with twelve treatments. The treatment consists of two spacings, two fertilizer levels and spraying of foliar nutrients and growth regulators. The results revealed that plant spacing of 30 × 15 cm with 100 % RDF coupled with foliar spray of TNAU Pulse Wonder @ 1.125% at 50 % flowering recorded higher yield attributes, yield and highest profit. The seed yield increases with 29 % over the adoption of crop spacing of 30 × 10 cm with 100 % RDF without any foliar nutrition.
Key words : Crop geometry, Fertilizer levels, Foliar nutrition, Yield attributes, Yield,Economics