Vol. 11, Issue 3 (2022)

Author(s):
Geetha Kumari BN, Sarvajna B Salimath, S Onkarappa, Thippeshappa GN and D Thippesha

Abstract:
A field experiment was conducted during Rabi, 2019 at ICAR, Krishi Vigyan Kendra, Babbur Farm, Chitradurga to study the effect of different NPK levels and intervals of fertigation on growth and yield of Onion (Allium cepa L.). The experiment was laid out in randomized block design with six fertigation treatments viz. T₂ – 100% RDF NPK @ 10 days interval, T₃ – 75% RDF NPK @ 10 days interval, T₄ – 50% RDF NPK @ 10 days interval, T₅ – 100% RDF NPK @ 7 days interval, T₆ – 75% RDF NPK @ 7 days interval, T₇ - 50% RDF NPK @ 7 days interval and T₁ - 100% RDF NPK through soil application (Control). The treatments were replicated thrice. On the basis of results obtained the maximum plant height (cm), Number of leaves and leaf length (cm), were recorded with the application of 100% RDF @ 10 days interval (T₂) which was statistically on par with application of 100% RDF @ 7 days interval (T₅) and yield attributes viz. bulb dry matter (g plant ^-1), weight of five bulbs (g), Bulb yield (t ha ^-1) were recorded highest with application of 100% RDF @ 10 days interval (T₂) T₂ recorded a yield of 25.7 t/ha. Which was around 22.7 per cent more as compared to T₇ (50% RDF NPK through fertigation at 7 days interval) and 14.4 percent increase over control (Soil application of 100% RDF NPK). Thus, drip fertigation at 10 days interval helped to improve the onion plant growth and bulb yield, particularly the composition 100% RDF through fertigation @ 10 days interval.