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Soil erosion control and carbon sequestration in shifting cultivated degraded highlands of eastern India: performance of two contour hedgerow systems

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Title Soil erosion control and carbon sequestration in shifting cultivated degraded highlands of eastern India: performance of two contour hedgerow systems
Not Available
 
Creator Partha Pratim Adhikary
D. Barman
P. Jakhar
H. C. Hombegowda
M. Madhu
 
Subject Agroforestry _ Carbon sequestration _ Contour hedgerow _ Nutrient loss _ Soil erosion and conservation _ Trench
 
Description Not Available
Two contour hedgerow (Gliricidia sepium
and Leucaena leucocephala) systems with and without
miniature trenches were evaluated as conservation
measures in the shifting cultivated degraded Eastern
Ghats Highlands of Odisha, India. Staggered planting
of hedgerows at 0.5 9 0.5 m spacing in two parallel
lines with miniature trenches (0.3 m width and 0.3 m
depth) in between two lines were laid out across 5 and
10 % slopes. The treatment Gliricidia ? miniature
trench (G?MT) reduced runoff by 23.3–32.5 %, soil
loss by 49.5–52.7 %, loss of soil organic carbon
(SOC), N, P, and K by 44.1–47.6, 61.5–62.2,
54.8–58.1, and 53.1–56.3 %, respectively, over no
conservation treatment (control), whereas the same for
the treatment Leucaena ? miniature trench (L?MT)
was 18.6–18.9, 42.4–43.7, 30.9–40.2, 41.9–56.3,
47.3–47.9, and 38.5–47.8 %, respectively, over control.
Within 0–20 cm soil profile, G?MT sequestered
1.62 Mg ha-1 year-1year-1 SOC, of which 0.93 Mg ha-1
was sequestered due to soil reclamation and
0.69 Mg ha-1year-1 was retained due to the barrier
effect, whereas L?MT sequestered 1.21 Mg h.-1year-1
SOC. The trench treatments with Gliricidia
and Leucaena hedgerows were 3.8–4.7 and 3.7–5.3 %
more efficient to stock SOC within 40 cm soil profile
than no trench treatment. The decrease of SOC stock
by 40–102 kg ha-1year-1in the control plots from
the initial level indicated the ongoing erosion process
in unprotected lands. The findings will help to promote
hedgerow based agroforestry for resource conservation
and improved SOC sequestration in sloping lands.
Not Available
 
Date 2020-06-02T10:59:30Z
2020-06-02T10:59:30Z
2016-04-23
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/36785
 
Language English
 
Relation Not Available;
 
Publisher Not Available