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Gupta, Dipak Kumar

Economic Analysis of Different Greenhouse Gas Mitigation Technologies in Rice-Wheat Cropping System of the Indo-Gangetic Plains

Abstract Views :250 | PDF Views:89

Authors

Dipak Kumar Gupta ¹, Arti Bhatia ¹, T. K. Das ², Parmendra Singh ², Amit Kumar ¹, Niveta Jain ¹, Himanshu Pathak ¹

Affiliations
1 Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, IN
2 Division of Agronomy, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, IN

Source

Current Science, Vol 110, No 5 (2016), Pagination: 867-874

Abstract

To reduce the greenhouse gas (GHG) emission from rice and wheat cultivation several mitigation options have been suggested. However, economic impact of these technologies has been poorly documented. In the present study economic analysis of some emerging GHG mitigation technologies for rice-wheat system of the Indo-Gangetic Plains has been carried out. The experiment consisted of six combinations of wheat- rice crop rotation using eight treatments, including conventionally tilled wheat (CTW), zero tilled wheat (ZTW), transplanted puddled rice (TPR), dry direct seeded rice (DSR), intermittent wetting and drying (IWD), application of rice straw (RS) with ZTW and use of neem oil-coated urea (NOCU) in TPR and ZTW. Cost of various inputs and income from grain and straw were used for computing the benefit to cost (B : C) ratio in the different treatments. ZTW showed higher yield and B : C ratio compared to CTW along with reduction in fuel consumption during tillage operation. In spite of lower yield under DSR and IWD, saving of water, labour and energy in these treatments lowered the cost of cultivation and enhanced B : C ratio similar to TPR. Application of rice straw and NOCU also showed positive impact on crop yield. B : C ratio of rice-wheat system ranged from 1.62 to 1.86 in the first year and from 1.86 to 2.16 in the second year. B : C ratio was significantly higher in all the treatments in the experimented rice-wheat system compared to conventional system, i.e. CTW-TPR. The ZTW + RR - DSR (WR5) showed highest B : C ratio followed by ZTW + DSR (WR4) in both the seasons.

Keywords

Economic Analysis, Greenhouse Gases, Mitigation Technology, Rice–Wheat System.

Full Text

Wood Specific Gravity of Trees in Hot Semi-Arid Zone of India:Diversity among Species and Relationship between Stem and Branches

Abstract Views :260 | PDF Views:77

Authors

Dipak Kumar Gupta ¹, R. K. Bhatt ², A. Keerthika ¹, A. K. Shukla ¹, M. B. Noor Mohamed ¹, B. L. Jangid ¹

Affiliations
1 ICAR-Central Arid Zone Research Institute, Regional Research Station, Pali-306 401, IN
2 ICAR-Central Arid Zone Research Institute, Jodhpur-342 003, IN

Source

Current Science, Vol 113, No 08 (2017), Pagination: 1597-1600

Abstract

Wood specific gravity (WSG) is an important parameter in allometric equations for accurate estimation of C-sequestration and other functional properties of a tree. However, WSG of many tree species especially of arid and semi-arid regions is poorly reported. Further, identifying indirect methods for determination of stem WSG from branches may be rapid and relatively easy. The present study determined WSG of stem and branches of 21 tree species in the hot semi-arid region of Western India. Three individual trees from each species were randomly selected and sampled for determination of WSG of stem, primary and secondary branch. WSG varied significantly among the species (F = 42.83, P < 0.001) and sampling locations (stem and branches) (F = 29.43, P < 0.001). In stem (at DBH), it ranged from 0.42 ± 0.04 to 0.74 ± 0.03 among the species while within an individual tree it varied in order of stem > primary branch > secondary branch in most species. WSG of stem and branches showed linear relationship and branches were found a good predictor of stem WSG (R² > 0.83).

Keywords

Arid Region, Branch, Tree Biomass, Wood Specific Gravity.

Full Text

References

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Carbon Sequestration Potential of Hardwickia Binata Roxb. Based Agroforestry in Hot Semi-Arid Environment of India: An Assessment of Tree Density Impact

Abstract Views :191 | PDF Views:76

Authors

Dipak Kumar Gupta ¹, R. K. Bhatt ², A. Keerthika ¹, M. B. Noor Mohamed ¹, A. K. Shukla ¹, B. L. Jangid ¹

Affiliations
1 ICAR-Central Arid Zone Research Institute, Regional Research Station, Pali-Marwar - 306 401, IN
2 ICAR-Central Arid Zone Research Institute, Jodhpur - 342 003, IN

Source

Current Science, Vol 116, No 1 (2019), Pagination: 112-116

Abstract

Agroforestry is one of the most promising options for climate change mitigation through carbon sequestration. However, carbon sequestered in agroforestry system depends on various factors like type of tree species, tree density, system age, soil and climate. One of the most important factors for enhancing carbon sequestration per unit land is tree density. Hardwickia binata Roxb. has been reported as suitable agroforestry tree species with multiple benefits in arid and semi-arid region, however, the role and impact of tree density in carbon sequestration is poorly reported. This study estimated impact of tree density (D₁ = 333 tree ha^-1 and D₂ = 666 tree ha^-1) on carbon sequestration potential of 30-year-old H. binata Roxb. + Cenchrus setigerus silvipasture system in hot semiarid region of Rajasthan. The carbon sequestered in tree biomass was estimated by reported allometric equations, whereas in soil it was determined by Walkley and Black method. Results showed significant impact of tree density on carbon sequestration per unit tree and per hectare land. The average biomass carbon sequestered by a tree was significantly more (44.5%) in low density (D₁) compared to high density (D₁) system. However, total biomass carbon sequestered per hectare land was significantly more (40.8%) in high density system (31.6 ± 12.6 Mg C ha^-1. Carbon sequestered in soil organic matter was higher in both D₁ and D₁ systems compared to control (sole Cenchrus setigerus field). It ranged from 19.93 ± 0.31 Mg C ha^-1 in control to 22.94 ± 0.65 Mg C ha^-1 and 23.25 ± 0.78 Mg C ha^-1 in D₁ and D₂ respectively. The total carbon sequestered (below and above ground tree biomass and soil organic carbon) was in the order D₂ > D₁ > control.

Keywords

Agroforestry, Allometric Equation, Arid and Semiarid Regions, Silvipasture, C-Sequestration, Tree Density.

Full Text

References

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Verchot, L. V. et al., Climate changes: linking adaptation and mitigation through agroforestry. Mitig. Adapt. Strat. Gl. Change, 2007, 12, 901-910.

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Dhyani, A. S. K. et al., Estimating carbon sequestration potential of existing agroforestry systems in India. Agroforest. Syst., 2017, 91, 1101-1118.

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Vachellia nilotica Subsp. cupressiformis – Status and Conservation Approach of an Endemic Agroforestry Tree in Rajasthan

Abstract Views :188 | PDF Views:84

Authors

A. Keerthika ¹, A. K. Shukla ¹, Dipak Kumar Gupta ², M. B. Noor Mohamed ¹, B. L. Jangid ³

Affiliations
1 ICAR-Central Arid Zone Research Institute, Regional Research Station, Pali Marwar 306 401, IN
2 ICAR-Indian Agricultural Research Institute, Gauria Karma, Hazaribagh 825 405, IN
3 ICAR-Agricultural Technology Application Research Institute, Zone II, Jodhpur 342 005, IN

Source

Current Science, Vol 120, No 8 (2021), Pagination: 1293-1294

Abstract

No Abstract.

Keywords

No Keywords.

Full Text

References

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Grewia tenax (Frosk.) Fiori – popularization, conservation and utilization of lesser known multipurpose shrub

Abstract Views :191 | PDF Views:88

Authors

M. B. Noor Mohamed ¹, A. K. Shukla ¹, A. Keerthika ¹, Dipak Kumar Gupta ², S. R. Meena ¹, Kamla K. Choudhary ¹, R. S. Mehta ¹

Affiliations
1 ICAR-Central Arid zone Research Institute, Regional Research Station, Pali-Marwar 306 401, IN
2 ICAR-Indian Agricultural Research Institute, Hazaribagh 825 405, IN

Source

Current Science, Vol 120, No 10 (2021), Pagination: 1557-1558

Abstract

No Abstract.

Keywords

No Keywords

Full Text

References

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