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Conservation agriculture for sustainable intensification in South Asia


Agriculture’s contribution to the Sustainable Development Goals requires climate-smart and profitable farm innovations. In the past decade, attention has been given to conservation agriculture as a ‘sustainable intensification’ strategy, although a lack of evidence-based consensus on the merits of conservation agriculture prevails in the context of intensive smallholder farming in South Asia. A meta-analysis using 9,686 paired site–year comparisons representing different indicators of cropping-system performance suggest significant (P < 0.05) benefits when conservation-agriculture component practices are implemented either separately or in tandem. For example, zero tillage with residue retention had a mean yield advantage of 5.8%, a water use efficiency increase of 12.6%, an increase in net economic return of 25.9% and a reduction of 12–33% in global warming potential, with more-favourable responses on loamy soils and in maize–wheat systems. Results suggest that there are opportunities to maximize expected benefits, and policymakers and development practitioners should continue to be appraised of the potential of CA for contributing to the Sustainable Development Goals in South Asia.

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Fig. 1: Comparison of CA with conventional agricultural practice.
Fig. 2: Performance of CA across the cropping systems.
Fig. 3: Effect of soil texture on the performance of CA.

Data availability

The data that support the findings of this study are available on request from the corresponding author on a case-by-case basis. The on-station data sources have been listed in the Supplementary Information. Source Data for Figs. 1–3 are provided as Source Data files.

Code availability

The reproducible code for the analyses is available at; common code for generating figures is available at


  1. 1.

    Hattleback, M. Malnutrition in South-Asia. Poverty, Diet or Lack of Female Empowerment? CMI Working Pap. Wp. 4, 14 (CMI, 2012).

  2. 2.

    The Future of Food and Agriculture: Trends and Challenges (FAO, 2017).

  3. 3.

    Amarnath, G., Alahacoon, N., Smakhtin, V. & Aggarwal, P. Mapping Multiple Climate-Related Hazards in South Asia Research Report 170 (IWMI, 2017).

  4. 4.

    Muthukumara, M., Bandyopadhyay, S., Chonabayashi, S., Markandya, A. & Mosier, T. South Asia’s Hotspots: Impacts of Temperature and Precipitation Changes on Living Standards (World Bank, 2018).

  5. 5.

    Tilman, D., Balzer, C., Hill, J. & Befort, B. L. Global food demand and the sustainable intensification of agriculture. Proc. Natl Acad. Sci. USA 108, 20260–20264 (2011).

    CAS  Article  Google Scholar 

  6. 6.

    Godfray, H. C. J. & Garnett, T. Food security and sustainable intensification. Phil. Trans. R. Soc. B 369, 20120273 (2014).

    Article  Google Scholar 

  7. 7.

    What Is Conservation Agriculture? (FAO, 2014).

  8. 8.

    Giller, K., Witter, E., Corbeels, M. & Tittinell, P. A. Conservation agriculture and smallholder farming in Africa: the heretics’ view. Field Crops Res. 114, 23–24 (2009).

    Article  Google Scholar 

  9. 9.

    Rusinamhodzi, L. et al. A meta-analysis of long-term effects of maize grain yield under rain-fed conditions. Agron. Sust. Dev. 31, 657–673 (2011).

    Article  Google Scholar 

  10. 10.

    Friedrich, T., Derpsch, R. & Kassam, A. Overview of the global spread of conservation agriculture. Field Actions Sci. Rep. 6 (Special issue), 1–7 (2012).

  11. 11.

    Jat, M. L. et al. (eds) Proc. Regional Dialogue on Conservation Agriculture in South Asia (CIMMYT; APAARI; ICAR, 2012).

  12. 12.

    Brouder, S. M. & Gomez-Macpherson, H. The impact of conservation agriculture on smallholder agricultural yields: a scoping review of the evidence. Agric. Ecosyst. Environ. 187, 11–32 (2014).

    Article  Google Scholar 

  13. 13.

    Palm, C., Bnalco-Canqui, H., Declerck, F., Gatere, L. & Grace, P. Conservation agriculture and ecosystem services: an overview. Agric. Ecosyst. Environ. 187, 87–105 (2014).

    Article  Google Scholar 

  14. 14.

    Pittelkow, C. M. et al. Productivity limits and potentials of the principles of conservation agriculture. Nature 517, 365–368 (2015).

    CAS  Article  Google Scholar 

  15. 15.

    Harrington, L. W. & Hobbs, P. H. in Integrated Crop and Resource Management in the Rice–Wheat System of South Asia (eds Ladha, J. K. et al.) 3–67 (ADB, 2009).

  16. 16.

    Kiel, A., D’Souza, A. & McDonald, A. Growing the service economy for sustainable wheat intensification in the Eastern Indo-Gangetic Plains: lessons from custom hiring services for zero-tillage. Food Secur. 8, 1011–1028 (2016).

    Article  Google Scholar 

  17. 17.

    Erenstein, O. & Laxmi, V. Zero tillage impacts in India’s rice–wheat systems: a review. Soil Tillage Res. 100, 1–14 (2008).

    Article  Google Scholar 

  18. 18.

    Ladha, J. K. et al. in Integrated Crop and Resource Management in the Rice–Wheat System of South Asia (eds Ladha, J. K. et al.) 69–108 (ADB, 2009).

  19. 19.

    Huang, Y. et al. Greenhouse gas emissions and crop yield in no-tillage systems: a meta-analysis. Agric. Ecosyst. Environ. 268, 144–153 (2018).

    CAS  Article  Google Scholar 

  20. 20.

    Van den Putte, A., Govers, G., Diels, J., Gillijns, K. & Demuzere, M. Assessing the effect of soil tillage on crop growth: a meta-regression analysis on European crop yields under conservation agriculture. Eur. J. Agron. 33, 231–241 (2010).

    Article  Google Scholar 

  21. 21.

    Jat, R. K. et al. Ten years of conservation agriculture in a rice–maize rotation of Eastern Gangetic Plains of India: yield trends, water productivity and economic profitability. Field Crop. Res. 232, 1–10 (2019).

    Article  Google Scholar 

  22. 22.

    Gathala, M. K. et al. Effect of tillage and crop establishment methods on soil physical properties of a medium-textured soil under a seven-year rice–wheat rotation. Soil Sci. Soc. Am. J. 75, 1851–1862 (2011).

    CAS  Article  Google Scholar 

  23. 23.

    Jat, R. D. et al. Conservation agriculture and precision nutrient management practices in maize–wheat system in North-West IGP: effects on crop and water productivity and economic profitability. Field Crops Res. 218, 33–50 (2018).

    Article  Google Scholar 

  24. 24.

    Kumar, V. & Ladha, J. K. Direct seeding of rice. Recent developments and future research needs. Adv. Agron. 111, 297–413 (2011).

    Article  Google Scholar 

  25. 25.

    Chakraborty, D. et al. A global analysis of alternative tillage and crop establishment practices for economically and environmentally efficient rice production. Sci. Rep. 7, 9342 (2017).

    Article  Google Scholar 

  26. 26.

    Pittelkow, K. M. et al. When does no-till yield more? A global meta-analysis. Field Crops Res. 183, 156–168 (2015).

    Article  Google Scholar 

  27. 27.

    Shyamsundar, P. et al. Fields on fire: alternatives to crop residue burning in India. Science 365, 536–538 (2019).

    CAS  Article  Google Scholar 

  28. 28.

    Sidhu, H. S. et al. Development and evaluation of Turbo Happy Seeder to enable efficient sowing of wheat into heavy crop rice residue in rice–wheat rotation in the IGP of NW India. Field Crops Res. 184, 201–212 (2015).

    Article  Google Scholar 

  29. 29.

    Shyamsundar, P. Can India’s farmers deliver clean air along with good food? Cool Green Science (2017).

  30. 30.

    Aryal, J. P. et al. Conservation agriculture-based wheat production better copes with extreme climate events than conventional tillage-based systems: a case of untimely excess rainfall in Haryana, India. Agric. Ecosyst. Environ. 233, 325–335 (2016).

    Article  Google Scholar 

  31. 31.

    Jat, M. L. in Agriculture under Climate Change: Threats, Strategies and Policies (eds Belavadi, V. V., Nataraja Karaba, N. & Gangadharappa, N. R.) 147–154 (Allied Publishers Pvt. Ltd., 2017).

  32. 32.

    Singh, Yadvinder et al. Nitrogen management for zero till wheat with surface retention of rice residues in north-west India. Field Crops Res. 184, 183–191 (2015).

    Article  Google Scholar 

  33. 33.

    Sidhu, H. S. et al. Sub-surface drip fertigation with conservation agriculture in a rice-wheat system: a breakthrough for addressing water and nitrogen use efficiency. Agric. Water Manag. 216, 273–283 (2019).

    Article  Google Scholar 

  34. 34.

    Groot, A. E. et al. Business models of SMEs as a mechanism for scaling climate smart technologies: the case of Punjab, India. J. Clean. Prod. 210, 1109–1119 (2019).

    Article  Google Scholar 

  35. 35.

    Alam, M. M. et al. Improvement of cereal-based cropping systems following the principles of conservation agriculture under changing agricultural scenarios in Bangladesh. Field Crop Res. 175, 1–15 (2015).

    Article  Google Scholar 

  36. 36.

    Kirkegaard, J. A. et al. Sense and nonsense in conservation agriculture: principles, pragmatism and productivity in Australian mixed farming systems. Agric. Ecosyst. Environ. 187, 133–145 (2014).

    Article  Google Scholar 

  37. 37.

    Ladha, J. K. et al. Agronomic improvements can make future cereal systems in South Asia far more productive and result in a lower environmental footprint. Glob. Change Biol. 22, 1054–1074 (2016).

    Article  Google Scholar 

  38. 38.

    Seth, A., Fischer, K., Anderson, J. & Jha, D. The Rice-Wheat Consortium: An Institutional Innovation in International Agricultural Research on the Rice–Wheat Cropping Systems of the Indo-Gangetic Plains (IGP) The Review Panel Report (Rice-Wheat Consortium, 2003).

  39. 39.

    Gupta, R. & Seth, A. A review of resource conserving technologies for sustainable management of the rice–wheat cropping systems of the Indo-Gangetic Plains (IGP). Crop Prot. 26, 436–447 (2007).

    Article  Google Scholar 

  40. 40.

    Ladha, J. K., Pathak, H., Tirol-Padre, A., Dawe, D. & Gupta, R. K. in Improving the Productivity and Sustainability of Rice–wheat Systems: Issues and Impacts (eds Ladha et al.) 45–76 (ASA, CSA and SSSA, 2003).

  41. 41.

    Giller, K., Witter, E., Corbeels, M. & Tittinell, P. A. Conservation agriculture and smallholder farming in Africa: the heretics’ view. Field Crops Res. 114, 23–24 (2009).

    Article  Google Scholar 

  42. 42.

    Giller, K. E. et al. Beyond conservation agriculture. Front. Plant Sci. 6, 870 (2015).

    Article  Google Scholar 

  43. 43.

    Kassam, A., Friedrich, T. & Derpsch, R. Global spread of conservation agriculture. Int. J. Environ. Stud. 76, 29–51 (2018).

    Article  Google Scholar 

  44. 44.

    Ridaura, S. L. et al. Climate smart agriculture, farm household typologies and food security: an ex-ante assessment from Eastern India. Agric. Sys. 159, 57–68 (2018).

    Article  Google Scholar 

  45. 45.

    Dastane, N. G. Effective Rainfall in Irrigated Agriculture Irrigation and Drainage Paper 25 (FAO, 1974).

  46. 46.

    Hedges, L. V., Gurevitch, J. & Curtis, P. S. The meta-analysis of response ratios in experimental ecology. Ecology 80, 1150–1156 (1999).

    Article  Google Scholar 

  47. 47.

    Adams, D. C., Gurevitch, J. & Rosenberg, M. S. Resampling tests for meta‐analysis of ecological data. Ecology 78, 1277–1283 (1997).

    Article  Google Scholar 

  48. 48.

    Viechtbauer, W. Conducting meta-analyses in R with the metafor package. J. Stat. Softw. 36, 1–48 (2010).

    Article  Google Scholar 

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We thank the Indian Council of Agricultural Research (ICAR), Government of India for Window 3 grant to CIMMYT, the CGIAR Research Programs on Wheat Agri-Food Systems (CRP WHEAT) and Climate Change, Agriculture and Food Security (CCAFS) for funding this research. CCAFS’s work is supported by CGIAR Fund Donors and through bilateral funding agreements. For details, please visit Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the associated and/or supporting institutions/funders. The usual disclaimer applies.

Author information




M.L.J. conceptualized, designed and coordinated the work. M.L.J., D.C., M.K.G. and D.S.R. acquired the data. D.C. and D.S.R. analysed the data and interpreted results. J.K.L. supervised and drafted the work, interpreted results and revised the manuscript. A.M. and B.G. interpreted results and revised the manuscript.

Corresponding author

Correspondence to Mangi Lal Jat.

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Supplementary information

Supplementary Information

Supplementary methods, results, Tables 1–10, Figs. 1 and 2, note and references.

Reporting Summary

Source data

Source Data Fig. 1

Statistical Source Data

Source Data Fig. 2

Statistical Source Data

Source Data Fig. 3

Statistical Source Data

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Jat, M.L., Chakraborty, D., Ladha, J.K. et al. Conservation agriculture for sustainable intensification in South Asia. Nat Sustain 3, 336–343 (2020).

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