Dev N. Tiwari

DOI

ABSTRACT

Plant-nutrient management study was conducted on onion seed production through off-season bulbs in 2008 and 2009 in mid hill, Deurali, Palpa, Nepal. The aim of experiment was to identify the best combination of plant nutrient to obtain optimum seed yield of onion. Randomized complete block design was employed with three replications consisting seven combinations of organic and inorganic fertilizers along with micronutrients as treatment. A total of 42 plants of Agri Found Dark Red variety were accommodated in a unit experimental plot of 5.04 m2 with 40cm x 30cm planting spacing. Observation was taken on number of harvested plants, days to 50% bolting and flowering and seed yield. Treatments had highly significance effects on days to 50% bolting and seed yield and days to 50% flowering was only significant. Early bolting (40.2 days) and early flowering (77 days) was observed in manure and fertilizer application of FYM 20tha-1 and 60:60:60kg N:P2O5:K2Oha-1 . Delayed bolting (45 days) and flowering (80.2 days) was observed in application of FYM 20tha-1 . Similarly, highest seed yield of 813kgha-1 was observed with application of 40kg K2Oha-1 , FYM 20tha-1 and 60:60kg N:P2O5ha-1 supplemented with two sprays of Multiplex. It suggested that application of combination of organic and inorganic fertilizers accompanied with micronutrient is essential for better seed yield of onion.