1. Allen, R.G., Perira, L.S., Raes, D., Smith, M., 1998. Crop Evapotranspiration. FAO Irrigation and Drainage, Rome, paper 56.
2. Increasing productivity of potato plants (Solanum tuberosum, L.) By using potassium fertilizer and humic acid application I;Asmaa;Journal of Academic Research,2010
3. Production and water use of potato under regulated deficit irrigation treatments;Ati,2010
4. Importance of drip irrigation in Indian agriculture;Bhardwaj;Kissan World,2001
5. Blacke, G.R., 1965. Bulk density. In: Black, C.A., et al. (Eds.), Methods of Soil Analysis. Part 1. Agron. Mono., vol. 9(1), pp. 374–390.