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Yadav, R. P.
- Growth Analysis and Yield of Wheat in Agrisilviculture System in Tarai Region of North-West India
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Authors
Affiliations
1 Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora-263 601, Uttarakhand, IN
2 G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, IN
3 Central Soil and Water Conservation Research & Training Institute, Dehradun-248 195, Uttarakhand, IN
1 Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora-263 601, Uttarakhand, IN
2 G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, IN
3 Central Soil and Water Conservation Research & Training Institute, Dehradun-248 195, Uttarakhand, IN
Source
Indian Forester, Vol 141, No 3 (2015), Pagination: 313-318Abstract
A field study was carried out to assess the effect of pruning at different height i.e. at 50, 100 and 150 cm in jatropha (Jatropha curcas Linn.) with control ( no Pruning) and fertility levels 50%, 100% and 150 per cent of recommended dose of NPK in wheat on crop growth parameters and yield in agrisilviculture system. The pruning in jatropha favoured growth parameters with varying magnitudes. The growth indices like CGR, RGR, NAR, LAR, LAI, RLGR and SLW were observed to be higher under various pruning heights than under no pruning. Magnitude of reduction varied with pruning heights and fertility levels. The relative crop growth rate in terms of NAR and LAR has been higher under pruned compared to unpruned jatropha. Grain, straw and biological yield reduced by 16.56, 12.56 and 13.85 %, respectively under jatropha in comparison to sole crop which indicate that pruning is essential for improving wheat yield under jatropha based agrisilviculture system.Keywords
Agrisilviculture, Fertility Levels, Growth Indices, Jatropha curcas, Pruning.
- Phenological Events along the Elevation Gradient and Effect of Climate Change on Rhododendron arboreum Sm. in Kumaun Himalaya
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PDF Views:81
Authors
Affiliations
1 Department of Forestry and Environmental Science, Kumaun University, Nainital 263 002, IN
2 Vivekananda Institute of Hill Agriculture, ICAR, Almora 263 601, IN
1 Department of Forestry and Environmental Science, Kumaun University, Nainital 263 002, IN
2 Vivekananda Institute of Hill Agriculture, ICAR, Almora 263 601, IN
Source
Current Science, Vol 108, No 1 (2015), Pagination: 106-110Abstract
Phenological events of rhododendron (Rhododendron arboreum Sm.) were monitored along elevation gradients in distinct ecological settings. The observations were carried out between 1500 and 2500 m elevation in Central Himalaya. The phenological events, i.e. bud formation, bud bursting, leafing, flowering, fruit formation and seed formation were recorded. Phenological duration and synchrony of all these phenophases were determined within site and along the elevation gradient in each study site. Our observations showed high synchrony throughout the elevation gradient, especially for peak flowering. Temperature, rainfall, age of the observed trees and site characteristics were related to initial and peak flowering dates. The circumference varied from 35.0 ± 2.73 to 140.0 ± 2.88 cm; similarly, height varied from 5.0 ± 1.02 to 16.5 v 1.41 m. All the phenological events began early at low elevation and were delayed at higher elevation. R. arboreum had a sharp flowering peak from January to March. Wet season flowering was rare, and seed formation occurred in summer. The climatic conditions affected the phenological characters of R. arboreum.Keywords
Climate Change, Elevation Gradient, Phenology, Rhododendron arboreum.Full Text
- Assessment of Soil Erosion in the Fragile Himalayan Ecosystem of Uttarakhand, India Using USLE and GIS for Sustainable Productivity
Abstract Views :271 |
PDF Views:101
Authors
Affiliations
1 ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, IARI Campus, New Delhi 110 012, IN
2 ICAR-National Bureau of Soil Survey and Land Use Planning, Amravati Road, Nagpur 440 033, IN
3 ICAR-Agricultural Scientists Recruitment Board, KAB-I, Pusa, New Delhi 110 012, IN
1 ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, IARI Campus, New Delhi 110 012, IN
2 ICAR-National Bureau of Soil Survey and Land Use Planning, Amravati Road, Nagpur 440 033, IN
3 ICAR-Agricultural Scientists Recruitment Board, KAB-I, Pusa, New Delhi 110 012, IN
Source
Current Science, Vol 115, No 1 (2018), Pagination: 108-121Abstract
In this study, we assess quantitative soil loss in the Himalayan ecosystem of Uttarakhand, India using universal soil loss equation and geographic information system. The analysis shows that about 359,000 (6.71%), 473,000 (8.84%) and 1,750,000 ha (32.72%) area is under moderately severe (15–20 tonne ha–1 year–1), severe (20–40 tonne ha–1 year–1) and very severe (40–80 tonne ha–1 year–1) soil loss respectively. It clearly indicates that about 48.3% area of the state is above the tolerance limit of 11.2 tonne ha–1 year–1 of soil loss. This explains the need to undertake appropriate soil and water conservation measures to mitigate the topsoil loss in this fragile Himalayan ecosystem. Based on the degree of severity of soil loss, appropriate soil and water conservation measures need to be adopted on priority basis. The agriculture practices should be diversified with farm-forestry, agro-horticulture and/or agro-forestry to minimize soil loss in cultivated areas of the state. Such conservation programmes help mitigate accelerated soil erosion, restore the fragile ecosystems and generate employment opportunities for the needy.Keywords
Conservation Measures, Erodibility, Fragile Ecosystems, Geographic Information System, Universal Soil Loss Equation.Full Text
References
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- Identification of Potential Areas for Crops
Abstract Views :251 |
PDF Views:103
Authors
Affiliations
1 ICAR-National Bureau of Soil Survey and Land Use Planning (NBSS and LUP), Regional Centre, Bengaluru - 560024, IN
2 ICAR-NBSS and LUP, Amravati Road, Nagpur - 440033, IN
3 ICAR-NBSS and LUP, Regional Centre, New Delhi - 110012, IN
1 ICAR-National Bureau of Soil Survey and Land Use Planning (NBSS and LUP), Regional Centre, Bengaluru - 560024, IN
2 ICAR-NBSS and LUP, Amravati Road, Nagpur - 440033, IN
3 ICAR-NBSS and LUP, Regional Centre, New Delhi - 110012, IN
Source
Current Science, Vol 115, No 5 (2018), Pagination: 955-961Abstract
Identification and delineation of potential areas for different crops, both at country and state level by using available legacy data assumes importance, in order to preserve and conserve these areas to feed the increasing population and future generations. In this direction, a new integrated approach has been developed to identify potential areas for different crops and the same has been validated. Identifying and delineating commodity specific areas/zones, would help in enhancing the productivity and profitability and framing of land use policies.Keywords
Potential Areas, Commodity Specific Zones/Areas, Relative Spread Index, Relative Yield Index, Land Use Policy.Full Text
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