Evaluation of Fertilizer Efficiency of Wheat Under Subsurface Drip Irrigation
Loading...
Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Punjab Agricultural University, Ludhiana
Abstract
An experiment on nitrogen fertigation of wheat under sub-surface drip irrigation was
conducted for two years, 2018-19 and 2019-20, at PAU, Ludhiana. Treatments were laid out
in a split-plot design with three levels of sub-surface irrigation and fourth level as surface drip
irrigation. The treatments also included four levels of N fertigation including no fertilizer
application as control treatment. Impact of the treatments on yield and uptake of N, P and K
were analyzed. There was no significant difference in grain yield between irrigation at 100%
and 80% ETc and N fertilizer at 100% and 80% RDF. However, the grain yield was
significantly lower under deficit irrigation and fertilizer level of 60% ETc and 60% RDF.
Higher irrigation and fertilizer levels positively impacted the N concentration in both straw
and grains. Even though fixed doses of P and K were applied, increase in N fertilizer level
positively impacted P and K concentrations and uptake by 15-18%. Significantly lower levels
of N concentration under surface drip irrigation treatment were recorded, but this did not have
a significant effect on the yield as compared to that under sub-surface drip irrigation.
Additional uptake of N was significantly higher with increase in N fertilizer application, but it
did not have a significant impact on additional grain yield between N fertilizer levels of 100%
and 80% RDF. For sub-surface drip irrigated wheat, irrigation at 80% ETc and N fertilizer at
80% RDF results in 20% irrigation water and N fertilizer saving. This treatment was
considered the best treatment for adoption in Punjab conditions.
Description
Keywords
Citation
Jha, Ayushi (2020). Evaluation of Fertilizer Efficiency of Wheat Under Subsurface Drip Irrigation (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.