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Avasthe, R. K.
- Traditional Agro-forestry Systems of Sikkim with Special Reference to Large Cardamom-alder Relationship
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Indian Forester, Vol 133, No 7 (2007), Pagination: 888-898Abstract
Sikkim with a total geographic area of 7,096 km2 reveals wide variations in altitude from 300m to 8,586 m amsl and the climate changes from sub-tropical to alpine with increase in altitude. This region receives copious rainfall with annual rainfall ranging from 2,000 to 5,000 mm. Nearly 70 per cent land is under forest and related land use with predominance of agroforestry systems. The present study reveals that nine major agroforestry systems are in practice in the sub-tropical and mid-hill temperate zones. Only three agroforestry systems were observed in the temperate zone viz., agri-horticultural, horti-silvi-pastoral and livestock-based mixed farming whereas in the higher altitudes the climate reduced the agroforestry systems to one in each zone. Horti-pastoral-transhumance and livestock-based mixed farming (beyond timberline)-transhumance were recorded in the sub-alpine and alpine zones, respectively. Livestock was an integral component of all the systems. The largest agroforestry system (AFS) was large Cardamom (Amomum subulatum Roxb.) as an undergrowth occupying the middle tier in the three-tier forest constitution with Alder (Alnus nepalensis) as the dominant companion. The economics of these two systems revealed that the large cardamom AFS (Rs. 92,700/-) generated almost double the annual returns than the maize-potato cultivation Rs. 48,000/- per hectare when seven income options were compared.
- Restoration of Sikkim Hill Resources Vis-a-vis Watershed Planning
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Indian Forester, Vol 127, No 11 (2001), Pagination: 1263-1273Abstract
Geomorphologically Sikkim hills are the upper part of the catchment of Teesta river and its tributaries. Till the beginning of 20th century , people of this State were self sufficient depending on agriculture and forest produce and were in complete harmony with nature. In the Second Millennium exponential growth of human population resulted in the degradation of natural resources to meet the demand of agricultural land for food requirement , pressure on pasture land to increasing livestock , infrastructure (road , city dwellers and other support services) development , and demand of mountain resources through market and tourism development. The Teesta and its tributaries are divided into many natural micro-watersheds by prominent streams , can be effectively utilized on integrated watershed basis to protect the natural resources (land , water , forest etc.) for the ecological balance of Sikkim hills. It is a multidisciplinary holistic approach to improve the living standard of people by diversifying mountain economy through amalgamation of local wisdom and latest scientific knowhow.- Ethno Botanical Edible Plant Biodiversity of Lepcha Tribes
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Indian Forester, Vol 138, No 9 (2012), Pagination: 798-803Abstract
Dzongu area of North Sikkim is one of the most biologically diverse habitats reserved for the Lepcha tribe in Sikkim. Surveys were conducted among the community during January to December 2009-10 to document the edible plants wealth of the area. Edible resources were categorized into four types on the basis of their uses. The paper highlights the edible resources commonly used by these tribes for life saving purposes in a very remote part of the country. Among vegetables, spices, fruits and underutilized plants, 38 plants belonging to 11 families under 24 genera are used as vegetables, nine plants from five families and seven genera are used as spices, 10 plants from seven families and nine genera are used as fruits and 19 plants from 17 families and 18 genera are underutilized for different purposes.Keywords
Edible, Lepchas, Plant Diversity, Sikkim Himalaya- Allelopathic Effects of Paulownia and Poplar on Wheat and Maize Crops Under Agroforestry Systems in Doon Valley
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Indian Forester, Vol 138, No 11 (2012), Pagination: 986-990Abstract
A study was conducted for 3 years (1998-2000) on the farmers’ fields in Doon Valley to evaluate the allelopathic effects of trees on the understory crops in a Paulownia and poplar based agroforestry system. Results revealed that leaf leachates of both tree species significantly affected germination of maize and wheat up to 21% and this negative effect was more with 2.0% concentration of leaf leachates in comparison to control. Further it was noticed that this effect was more pronounced with Poplar than Paulownia due to more tannin, wax, flavonoides and phenolics present in the leaf leachates of Poplar. Higher germination and growth parameters of wheat and maize were recorded with 1 and 2 per cent aqueous leaf extract of Paulownia - GP leaves. The Paulownia clone-GP out performed among all the clones of the two species without any significant negative effect on growth and yield attributes of maize and wheat which indicates its compatibility with crops. Thus, it is inferred that the Paulownia clone-GP has great potential as an agroforestry tree species in India under the similar Edapho-climatic conditions.Keywords
Agroforestry, Allelochems, Leaf Leachate, Maize, Wheat, Paulownia, Poplar- Scientific Backyard Poultry Farming: A Potent Tool for Socioeconomic Stability and Nutritional Security in Sikkim Himalayan
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1 ICAR Research Complex for North Eastern Hill Region, Sikkim Centre, Tadong, Gangtok, Sikkim, IN
1 ICAR Research Complex for North Eastern Hill Region, Sikkim Centre, Tadong, Gangtok, Sikkim, IN
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Research Journal of Animal Husbandry & Dairy Science, Vol 5, No 1 (2014), Pagination: 30-34Abstract
No AbstractKeywords
Potent Tool, Socio-Economic Stability, Nutritional Security- Biochar as Carbon Negative in Carbon Credit under Changing Climate
Abstract Views :240 |
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1 ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok 737 102, IN
1 ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok 737 102, IN
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Current Science, Vol 107, No 7 (2014), Pagination: 1090-1091Abstract
No Abstract.Full Text
- Buckwheat: the Natural Enhancer in Rhizosphere Phosphorus
Abstract Views :264 |
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Affiliations
1 ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok 737 102, IN
1 ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok 737 102, IN
Source
Current Science, Vol 109, No 10 (2015), Pagination: 1763-1763Abstract
No Abstract.Full Text
- Biobeds:On-Farm Biopurification for Environmental Protection
Abstract Views :266 |
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Authors
Affiliations
1 ICAR Research Complex for NEH Region, Sikkim Centre, Tadong, Gangtok 737 102, IN
1 ICAR Research Complex for NEH Region, Sikkim Centre, Tadong, Gangtok 737 102, IN
Source
Current Science, Vol 109, No 9 (2015), Pagination: 1521-1521Abstract
No Abstract.Full Text
- Carbon Farming and Credit for Mitigating Greenhouse Gases
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Authors
Affiliations
1 ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok 737 102, IN
1 ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok 737 102, IN
Source
Current Science, Vol 109, No 7 (2015), Pagination: 1223-1224Abstract
No Abstract.Full Text
- Carbon-Negative Biochar from Weed Biomass for Agricultural Research in India
Abstract Views :245 |
PDF Views:82
Authors
Affiliations
1 ICAR Research Complex for NEH Region, Sikkim Centre, Tadong, Gangtok 737 102, IN
1 ICAR Research Complex for NEH Region, Sikkim Centre, Tadong, Gangtok 737 102, IN
Source
Current Science, Vol 110, No 11 (2016), Pagination: 2045-2046Abstract
Biochar is a carbon-rich charcoal-like substance obtained by heating biomass in limited oxygen condition, through a process known as pyrolysis. If biochar is buried into the soil for carbon credits and crop enhancement, then the pyrolysis process can be carbon negative. When the process of producing biochar sequesters more carbon than it emitted, it is carbon negative.Full Text
- Tea Mosquito Bug (Helopeltis theivora) and Mealy Bug (Paraputo theaecola)-New Threats to Large Cardamom
Abstract Views :334 |
PDF Views:82
Authors
Affiliations
1 ICAR-Research Complex for NEH Region, Sikkim Centre, Tadong 737 102, IN
1 ICAR-Research Complex for NEH Region, Sikkim Centre, Tadong 737 102, IN
Source
Current Science, Vol 110, No 8 (2016), Pagination: 1390-1391Abstract
Large cardamom (Amomum subulatum), a member of the family Zingiberaceae under order Scitaminae, is the most important cash crop in the eastern Himalayan region including Sikkim and the Darjeeling hills in India, the eastern part of Nepal and southern Bhutan.Full Text
- Does Pestalotiopsis royenae Cause Leaf Streak of Large Cardamom?
Abstract Views :253 |
PDF Views:95
Authors
Affiliations
1 ICAR-National Organic Farming Research Institute, (Formerly ICAR Research Complex for NEH Region, Sikkim Centre), Tadong, Gangtok 737 102, IN
1 ICAR-National Organic Farming Research Institute, (Formerly ICAR Research Complex for NEH Region, Sikkim Centre), Tadong, Gangtok 737 102, IN
Source
Current Science, Vol 114, No 10 (2018), Pagination: 2155-2160Abstract
Leaf streak caused by Pestalotiopsis royenae (Guba) Steyaert has been reported as a new disease of large cardamom (Amomum subulatum). It is characterized by rectangular spots running parallel to the veins. P. royenae was isolated onto potato dextrose agar from the infected portion of the plant. In the pathogenicity test, disease symptoms were not present on inoculated plant and on detached leaf in vitro after 20 days. During 2014–2016, a survey in various large cardamom plantations of Sikkim revealed the presence of tea mosquito bugs on the infected parts of A. subulatum. The spots did not show any growth. Different sized spots have been noticed on the infected leaf produced by different instars. At the initial stage, these symptoms appear on the young and tender leaves of large cardamom. Tea mosquito bugs were collected from the infested leaves and allowed to feed under controlled conditions, which produced similar type of leaf streak symptoms in large cardamom and also in other non-host crops like maize and turmeric. The results reveal that the cause of leaf streak is due to feeding injury of tea mosquito bugs and rule out P. royenae as a pathogen causing leaf streak disease symptoms. Pestalotiopsis sp. was also isolated as endophyte from large cardamom.Keywords
Helopeltis theivora, Large Cardamom, Leaf Streak, Pestalotiopsis royenae.Full Text
References
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