Growth, yield and economics of white onion (Allium cepa L.) as influenced by different land designs and foliar application of bio-stimulants in Konkan region of India

The field experiment was carried out during the rabi season (December- March) of 2022-23 at Agronomy farm, College of Agriculture, Dapoli, Maharashtra, to study the effect of different land configuration and foliar sprays of bio-stimulants on growth, yield and economics of white onion (Allium cepa L.). Experiment was replicated thrice in strip- plot design with 15 treatment combinations. Six week old seedlings of white onion cv. Alibaug local were transplanted, on three different land configurations (M), viz. flatbed (M₁), furrow irrigated raised bed (FIRB) (M₂) and ridges and furrow (M₃), transplanted at a distance of 30 x 15 cm distance and were sprayed with two different concentrations of bio-stimulants (B), viz. K-sap 0.5% (B₁) and 1.0% (B₂) and chitosan 0.5% (B₃) and 1.0% (B₄) along with water spray (B₅) as control treatment. Higher yield and net returns were obtained when white onion was transplanted on flatbed method and sprayed with chitosan 1.0% foliar spray or K-sap 1.0% spray at 30 and 55 DAT.