Effect of nitrogen and naphthalene acetic acid on the growth and yield of summer onion

The experiment was conducted to study the response of summer onion N2 and Naphthalene Acetic Acid (NAA). consisted two factors. Factor A: 4 levels Nitrogen viz. N0-0kg (control), N1-90kg ha-1, N2-110kg ha-1 N3-130kg B: NAA H0-0ppm, H1- 50ppm, H2-100ppm H3-150ppm. laid out in Randomized Complete Block Design with three replications. Results revealed that terms nitrogen, highest bulb diameter (4.90cm), weight plant-1 (51.48g) yield (17.78t) were found from (110kg N ha-1). In case application NAA, length (3.22cm), (4.38cm), (45.18g) (15.49t) recorded H2 (100ppm NAA). Regarding combined effect nitrogen (3.76cm), (5.26cm), (55.50g) (19.60t) treatment combination N2H2. Considering economic analysis, BCR (2.39) also obtained N2H2 100ppm NAA) combination.