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Abstract - Issue Jul 2015, 36 (4) Back
nstantaneous and historical temperature effects on a-pinene
Land
management practices for resource conservation under vegetable cultivation in
Nilgiris hills ecosystem
D.C. Sahoo1*,
M. Madhu1, P. Muralidharan2 and A.K. Sikka3
1Central Soil and
Water Conservation Research and Training Institute, Research Center,
Sunabeda-763 002, India
2Central
Plantation Crop Research Institute, Research Station, Kayamkulam-690 502,
India
3Division of
Natural Resource Management, ICAR, New Delhi-110 114, India
*Corresponding
Author?s E-mail: dcsahoo@gmail.com
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Publication
Data
Paper received:
17 May 2014
Revised received:
19 May 2014
Accepted:
26 February 2015
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Abstract
Different
land management practices were studied for determining soil and water
conservation efficiencies, soil and nutrient retention and crop water use
efficiencies under vegetable cultivation in sloping and terraced land of the
Nilgiris, South India. Inward slope bench terraces (2%) and outward sloped
bench terraces (5 and 10%) with riser protection through medicinal/aromatic
plants, sloping lands (25%) with 1 m strips of vegetative barriers of
medicinal plant were taken with cultivation of? potato-cabbage in the first
year and carrot-beans in the second year for two rotations. Highest water
conservation efficiency (WCE) of 96% was obtained in 5% outward bench
terraces with rosemary (Rosemarinus officinalis) on riser. But maximum
soil conservation efficiency (SCE) of 98%, soil retention of 22447 t yr-1
and N, P, K retention of 5.37, 1.24, 1.03 t yr-1 respectively was
found in 10% outward bench terraces with grass on riser + recommended
nutrient management practices. However, due to highest crop yield and water
use efficiency under land management practice of 25% continuous slope with
vegetative barrier across the slope with relatively high WCE, SCE and soil
and nutrient retention capacity, this practice is highly acceptable by
farmers'. Therefore, vegetable cultivation on sloping land with intervention
of suitable vegetative barrier at regular intervals is recommended for
effective resource conservation in the fragile hill ecosystem of Nilgiris
Key
words
Crop
water use efficiency, Land improvement index, Soil conservation efficiency,
Water conservation efficiency
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