GROWTH, YIELD AND QUALITY OF ONION AS INFLUENCED BY INTEGRATED NUTRIENT MANAGEMENT

DILPREET TALWAR¹*, KULBIR SINGH², VARINDER SARDANA³, JAGDISH SINGH^4
1Department of Vegetable Science, Punjab Agricultural University, Ludhiana, 141004, Punjab
²Department of Vegetable Science, Punjab Agricultural University, Ludhiana, 141004, Punjab
³Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, 141004, Punjab
⁴Department of Soil Science, Punjab Agricultural University, Ludhiana, 141004, Punjab
* Corresponding Author : dsingh381@gmail.com

Received : 30-07-2016     Accepted : 08-08-2016     Published : 27-10-2016
Volume : 8     Issue : 51       Pages : 2295 - 2298
Int J Agr Sci 8.51 (2016):2295-2298

Keywords : Azotobacter, Azospirillium, PSB, Inorganic fertilizers and VAM
Academic Editor : Dr G.D. Patel
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

A Field experiment was conducted to access the effect of different combinations of bio-fertilizer along with inorganic fertilizers and organic manures on growth, yield and quality of onion during kharif season. The experiments consisted of fifteen treatments of bio-fertilizers and organic manures with or without chemical fertilizers. The results revealed that the number of leaves per plant, plant height and leaf area was maximum with the application of Azotobacter along with recommended dose of fertilizers. Minimum neck thickness was recorded in treatment where Azospirillium was applied along with recommended dose of fertilizers. Likewise, the Azospirilum produced the maximum bulb weight 138.3g and total yield 299.6 q/ha when it was applied with recommended dose of fertilizer. But bulb diameter were maximum of Azotobacter along with recommended dose of fertilizers (T1) followed by Azospirillium along with recommended dose of fertilizers. Maximum TSS (13.90 brix) and ascorbic acid (14.1 mg/100g fresh weight) was found also Azospirilum with recommended dose of fertilizer. It is concluded that Azotobacter along with 100% NPK improves vegetative growth, while Azospirillium along with 100% NPK improves yield and yield attributes of onion as far as the sustainability and environmental consideration are concerned.