Effect of integrated management of inorganic and organic fertilizers on yield, soil fertility and storage life of Rabi onion (Allium cepa L.)

Abstract

A field experiment was conducted during rabi season in 2011-12 at Vegetable Research Farm of C.S.A. University of Agriculture and Technology at Kalyanpur, Kanpur to study the effect of inorganic and organic fertilizers and their combination in various proportion on bulb yield attributes and storage life of onion (Allium cepa L.). The experiment was laid out in randomized block design (RBD) using ten replications. Among different fertilizer management practices; application of local recommendation 100:50:80:40 kg ha-1 NPKS + bio-fertilizers were recorded significantly higher potential for total bulb yield (20.57 t ha-1) and marketable bulb yield (20.01 t ha-1). Besides, the application of 110:40:60:40 NPKS kg ha-1 along with organic manures reduced physiological weight loss (PLW %) and increased the soil fertility (P) (K) and (S), respectively as compared to local recommendation of treatments. Hence, it can be recommended that NPKS dose along with bio-fertilizers (100:50:80:40 kg ha-1 + Azospirillum+ PSB @ each 5 kg ha-1) for more productive and resource use efficient than corresponding fertilizer management for farmers under Central Uttar Pradesh conditions.