Chandra, Ravish; Tyagi, N. K .and Sakthivadivel, R.2009. Irrigation water quality and crop yield relationship established for Kaithal Irrigation Circle of Bhakra System, Journal of Agricultural Engineering,42(2)40-44.           

Minhas, P.S., Tyagi, N.K. , Gupta, S.K. , Dong, K.L. , Cai, L.G. and Pereira, L. S.  2006Assessing Drainage Water Options in Bojili Irrigation District, Shandong.  Journal of Irrigation and Drainage  55:463-4777(2006)

Ambast, S.K. , Tyagi, N.K.,  and Raul, S.K. 2006 Management of declining ground water in the Trans Indo-Gangetic Plain (India).Irrigation and Drainage Engineering, 82 (3)  279-296
          
Tyagi, N. K.Agarwal, A.Ambest,S.K. and Sakthiwadivel, R. 2005. Water management decisions on small farms under scarce canal water supply: a case study from north West India. Agricultural Water Management, 77: 180-195.

Tyagi, N.K., Agarwal, A., Sakthivadivel, R., Ambast, S.K. and Sharma, D.K. 2004. Productivity of rice-wheat cropping system in a part of Indo-gangetic plain: a spatial analysis. Irrigation and Drainage Systems. 18(1): 73-88.
Sharma, D.P. and Tyagi, N.K. 2004. On-farm management of saline drainage water in arid and semi-arid regions. Irrigation and Drainage. 53:87-103.

Kaledhonkar, M.J., Singh, O.P., Ambast, S.K., Tyagi, N.K. and Tyagi, K.C. 2003. Artificial groundwater recharge through recharge tubewells: a case study. IE(I) Journal – AG. Pp. 28-32.       

     Tyagi, N.K., Sharma, D.K. and Luthra, S.K. 2002. Determination of evapotranspiration for maize and berseem clover.  Journal of Irrig. Sci. 21:173-181.
Srinivasulu, A. and Tyagi, N.K. 2002. A root zone salinity model for planning irrigation with saline water. Journal of Institution of Engineers - Agril. Engg. Division. Vol. 83, No. 1 (June, 2002): 28-32.

Kaledhonkar, M.J., Tyagi, N.K. and Van Der Zee, S.E.A.T.M. 2001. Solute transport modeling in soil for irrigation field experiments with alkali waters. Agricultural Water Management. 51:153-171.

Tyagi, N.K., Sharma, D.K. and Luthra, S.K. 2000. Determination of evapotranspiration and crop coefficients of rice and sunflower with lysimeter. Agricultural Water Management, 45 (2000): 41-54.

Tyagi, N.K., Sharma, D.K. and Luthra, S.K. 2000.  Evapotranspiration and crop coefficients of wheat and sorghum in India. Journal of Irrigation & Drainage Engineering, ASCE, 126(4): 215-222.

Sen, H.S., Ambast, S.K. and Tyagi, N.K. 1998. Rainwater Management in Sundarban Delta - Its Prospects for Multiple Cropping: I Analyses of Weather Parameters. J. Indian Soc. Coastal Agric. Res. 16 (1): 16-27.

Ambast, S.K., Sen, H.S. and Tyagi, N.K. 1998. Rainwater Management in Sundarban Delta - Its Prospects for Multiple Cropping: II. Optimizing On-farm Reservoir. J. Indian Soc. Coastal Agric. Res. 16 (II): 28-36.

Luthra, S.K., Kaledhonkar, M.J. Singh, O.P. and Tyagi, N.K. 1997. Design and development of an auto irrigation system. Agricultural Water Management, 33:169-181

Tyagi, N.K., Kaushal, R.K., Ram Sewa and Sampath, R.K. 1993. Towards a rational approach for design of unit command area, Water Resources Development, 9(4): 425‑438.

Tyagi, N.K., Tyagi, K.C., Pillai, N.N. and Willardson, L.S. 1993. Decision support to irrigation system improvement in saline environment, Agricultural Water Management 19(4): 285‑ 301.

Joshi, P.K. and Tyagi, N.K. 1991. Sustainability of existing farming system in Punjab and Haryana ‑ some issues on groundwater use, Ind. Jr. Agric. Econ., 46(3)412‑421.

Bhirud, Sanjay, Tyagi, N.K. and Jaiswal, C.S. 1990. A rational approach for modifying rotational water delivery schedule. J. Irrigation & Drain. Engng. Proc. ASCE, 116(5): 632‑644.

Tyagi, N.K., Subbaiah, R. and Singh, Jaspal. 1989. Optimal water management systems for conjunctive use of irrigation and rainwater, Water Resources Management 5:1‑16.

Mishra, A.R. and Tyagi, N.K.1987. Improving canal water delivery performance through auxiliary storage, J. Irrigation and Drain. Engng, Proc. ASCE: 114(3): 535‑546.

Tyagi, N.K. 1987. Managing salinity through conjunctive use of water resources, Ecological Modeling, 40: 11‑24.

Tyagi, N.K.1987. Managing rotational canal water supplies on the farm. Water Resources Bulletin, 23(3): 455‑462.

Mishra, A, Rao, K.V.G.K. and Tyagi, N.K. 1987. A probabilistic approach to sub-surface drainage design based on crop needs. J.Agric. Engng., ISAE, Vol.24, No.3, 343-353.

Tyagi, N.K.1986. Optimal water management strategies for salinity control, J. Irrigation and Drainage Engng. Proc. ASCE, 112(2): 81‑87.

Tyagi, N.K. and Dhruva Narayana, V.V. 1984. Crop and water use planning in alkali soils under reclamation. J. Irrigation & Drainage Engng. Proc. ASCE., 110(2):192‑207.

Tyagi, N.K. and Dhruva Narayana, V.V. 1984. Planning for optimal water use under rainfall uncertainty.  Ecological Modeling, 20: 243‑258.

Tyagi, N.K.1984. Effect of land surface uniformity on irrigation quality and economic parameters in sodic soils under reclamation, Irrigation Science.  5(3): 151‑166.

Tyagi, N.K. and Gupta, R.K.1984. Simulation of water table behaviour in artificially drained land,  J. Agric. Engng., ISAE, 22(3): 57‑66.

Tyagi, N.K. 1983. Minimizing irrigation energy requirements through improved water management, a case study.  J. Agric. Engng. ISAE, 20(3&4): 118‑128.

Tyagi, N.K., Gupta, R.K. and Singh, O.P. 1982. Irrigation system capacity design using frequency analysis of pan evaporation.  J. Inst. Engrs. (India), Vol. 63, PT. ND 1: 59‑ 65.

Tyagi, N.K. and Dhruva Narayana, V.V. 1982. Ground water recharge under alkali soils during reclamation. Agric. Water Management, 5(1): 51‑60.

Gupta, R.K. and Tyagi, N.K. 1980. A procedure for minimizing required tubewell capacity in irrigated rice. Irrigation Science, 3(1): 253‑262.

Singh, O.P., Tyagi, N.K. and Tiwari, A.K. 1979. A conceptual model for determining alkali watershed response. J. Inst. Engrs. (India), 59(1): 1‑4.

Pandey, R.N., Dhruva Narayana, V.V., Tyagi, N.K. and Gupta, S.K. 1977. Management of slopping borders for rice cultivation in alkali soils. Ind. J. Agric. Sci., 47(12): 613‑616.