Effect of Different Levels of NPK and Micronutrients for Plant Growth, Bulb and Quality of Onion (Allium cepa) in NFT System of Hydroponics

Aims: To evaluate the effect of different levels of NPK and micronutrients for plant growth, bulb and quality of Onion (Allium cepa) in NFT system of Hydroponics.

Study Design: Randomized Block design.

Place and Duration of Study: The experiment was carried out in 2022 at the shadenet of Department of horticulture, Naini Agricultural Institute, SHUATS, Prayagraj.

Methodology: The experiment was conducted in Randomized Block Design with 7+1 (Control) with 3 replications. The treatments were T0 Tap water, T1 (8.12ml NPK/Pl), T2 (9.37ml NPK/Pl), T3 (10.62ml NPK/Pl), T4 (11.87ml NPK/Pl), T5 (13.12ml NPK/Pl), T6 (14.37ml NPK/Pl), T7 (15.62ml NPK/Pl). From the present investigation it is found that treatment T7 )15.62ml NPK/Pl) was found to be best in terms of Plant length, Number of leaves, diameter and weight of bulb, girth of bulb, days to maturity, Days to flowering, days to maturity, average fresh weight, neck thickness at maturity, sensory evaluation, TSS, ascorbic acid, dry matter content, moisture content and cost benefit ratio.

Results: The current study indicates that the maximum growth of Onion in terms of growth, yield and quality was observed in Treatment 7 (15.62ml NPK/Pl).