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VOL. 7, ISSUE 1 (2025)
Study on fluctuation of soil moisture under different soil matric potential in drip irrigated okra (Abelmoschus esculentus (L.) Moench.)
Authors
K Arunadevi, Singh M, Ramachandran J, Maruthi Sankar GR
Abstract
A field trial was conducted during 2021 at
Water Technology Centre, Indian Agricultural Research Institute, New Delhi to
study the spread pattern and fluctuation of soil moisture in various matric
potential under drip irrigated okra. Okra seeds (variety Pusa B5) were sown in
raised bed of 60 cm width in sandy loam soil. Drip Irrigation laterals with
inline emitter of capacity of 2 lph were laid on the raised beds. Paired row
drip irrigation system was followed in order to accommodate two rows of crop in
either side of lateral. Soil matric potential was measured using tensiometers
with digital pressure transducer during the entire crop growth period.
Tensiometer measures soil moisture tension at the depth where it was
installed. Tensiometers (Irrometer) were installed in each irrigation
treatments at 20 cm depth in the root zone of okra. Soil moisture fluctuation were
measured at different matric potential (−20,−30,−35and −40kPa). At the soil
matric potential −20 kPa the moisture content ranged at the upper depth of root
zone was 92% to 87% of field capacity from the dripper to 30 cm spatial
distance. Nearly 83% to 77% of field capacity moisture spread was found horizontally
at the soil matric potential of −30 kPa. At the soil matric potential −35 kPa
the moisture content at the effective root zone depth was 77%. At the soil
matric potential −40 kPa, 72% to 66% of field capacity moisture was observed.
There was a decreasing trend of moisture content in the deeper layer and at the
location away from the emitting point.
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Pages:104-106
How to cite this article:
K Arunadevi, Singh M, Ramachandran J, Maruthi Sankar GR "Study on fluctuation of soil moisture under different soil matric potential in drip irrigated okra (<i>Abelmoschus esculentus</i> (L.) Moench.)". International Journal of Agriculture and Plant Science, Vol 7, Issue 1, 2025, Pages 104-106
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