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Acacia nilotica based silvipastoral systems for resource conservation and improved productivity from degraded lands of lower Himalayas

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Title Acacia nilotica based silvipastoral systems for resource conservation and improved productivity from degraded lands of lower Himalayas
Not Available
 
Creator R.P Yadav
Pawan Sharma
Swarm Lata Arya
Pankaj Panwar
 
Subject Acacia nilotica; Grass species; Eulaliopsis binata; Resource conservation; Saccharum munja; Silvipasture; Vetiveria zizanioides
 
Description Not Available
High population density and unscientific land use practices have induced severe land
degradation in fragile Lower Himalayan ecosystem of India. Land cover management
had been an effective strategy in managing land degradation through reduction in
water, soil and nutrients losses and improvement in soil fertility and quality. Acacia
nilotica (Acacia) based silvipastoral systems with five intercrops viz., Eulaliopsis binata
(bhabbar), Saccharum munja (munj), Vetiveria zizanioides (vetiver), natural grasses
and no grass were evaluated under a long term study in degraded bouldery lands in
Haryana state of India. All grasses resulted in reduction of soil, water and nutrient
losses and improved microbial properties. However, their association adversely
affected the growth of Acacia and the decline varied with grass species. After 11 years
of establishment, sole Acacia plantation had the maximum height (7.58 m), diameter at
breast height (dbh) (21.32 cm) and crown spread (7.41 m). Munj produced highest
biomass under Acacia but most adversely affected its growth resulting in minimum
survival (48%), height (7.07 m), dbh (16.23 cm) and crown spread (6.57 m). Yield of all
the grasses increased during initial 5-6 years but declined sharply thereafter with
maximum decline in bhabbar. Detailed investigations established that sharp decline in
survival and growth of bhabbar was due to shade and not because of nutrient
competition or allelopathy. Acacia + Vetiveria zizanioides proved most effective
silvipastoral system for resource conservation and biomass production. It also provided
highest NPV (Rs 1.88 lakhs ha-1), B:C (2.37) and IRR (24.70%) as compared to Rs.
6,998 ha-1, 1.05 and 8.76% under pure Acacia plantation, respectively.
Not Available
 
Date 2020-05-06T06:06:22Z
2020-05-06T06:06:22Z
2014-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/35415
 
Language English
 
Relation Not Available;
 
Publisher Not Available