Effect of water regimes, plot configuration and mulching on growth and economics of onion (Allium cepa L.)

The experiment was carried out during rabi season 2020-21 and 2021-22 at the Instructional farm, Department of Horticulture, AU, Jodhpur to study the effect of water regimes, plot configuration and mulching on growth and economics of onion (Allium cepa L.). The experiment was laid out in Split-Split Plot Design with three replications. Three factors were studied in this experiment: Main factor A), water regimes included three levels (I1- 1.0 IW/CPE, I2- 0.8 IW/CPE and I3- 0.6 IW/CPE ratio) and two sub-factors A) land configuration include two levels (B1- Flat bed configuration and B2- Raised bed configuration), and B) Mulching include four levels (M1- No-mulch, M2- Black mulch, M3- Silver-black mulch and M4- White-black mulch). The results showed that the maximum number of leaves per plant, neck diameter, bolting percent, net returns and B:C ratio were recorded under 1.0 IW/CPE, raised bed configuration and black mulch. The earliest maturity was recorded under 0.6 IW/CPE, flat bed configuration and no mulch.