1. Das, R., U. Thapa, N. Chattopadhyay and A.R. Mandal, 2015. Performance of Kharif onion genotypes under different dates of planting for productivity and economics in gangetic plains of West Bengal. Ann. Plant Soil Res., 17: 19-23.
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2. Thapa, U., N. De, P.H. Prasad and A.K. Rai, 2014. Study the efficacy of brassinolide and triacontanol on green and seed yield of Spinach-beet (Beta vulgaris Var. bengalensis). Trends Biosci., 7: 870-875.
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3. Thapa, U. and P. Tripathy, 2014. Production Technology of Tropical and Sub Tropical Vegetable Crops. Agrotech Pub. Academy, Udaipur, Rajasthan, India, ISBN-13: 9788183213356, Pages: 352.
4. Thapa, U. and P. Tripathy, 2014. Physiological Disorders and Mineral Deficiency of Vegetables. 1st Edn., Agrotech Publishing Academy, Udaipur, Rajasthan, India, ISBN-13: 9788183213783, Pages: 286.
5. Naik, A., S. Akhtar, A. Chattopadhyay, U. Thapa and P. Hazra, 2014. Estimates of genetic parameters of fruit quality traits in teasle gourd (Momordica subangulata Blume. subsp. renigera). Afr. J. Biotechnol., 13: 257-264.
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6. Datta, S., R. Das, D. Singh, U. Thapa and A.R. Mandal, 2014. Study of correlation among various characters of different potato (Solanum tuberosum L.) germplasm. J. Crop Weed, 10: 186-188.
7. Das, R., U. Thapa, S. Debnath, Y.A. Lygndoh and D. Mallick, 2014. Evaluation of French bean (Phaseolus vulgaris L.) genotypes for seed production. J. Applied Nat. Sci., 6: 594-598.
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8. Das, R., U. Thapa, A.R. Mandal, Y.A. Lygndoh, S.K. Kulshrestha and S. Debnath, 2014. Response of red cabbage (Brassica oleracea Var. Capitata f. rubra) to the integrated use of chemical fertilizers, Biofertilizers and boron. Applied Biol. Res., 16: 110-113.
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9. Thapa, U., R. Rai, Y.A. Lyngdoh, S.B. Chattopadhyay and P.H. Prassad, 2013. Assessment of producing quality sprouting broccoli (Brassica oleracea L. var. italic Plenk) under cover and open condition. Afr. J. Agric. Res., 8: 1315-1318.
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10. Naik, A., S. Akhtar, U. Thapa, A. Chattopadhyay and P. Hazra, 2013. Floral biology and interspecific and intergeneric crossability of teasle gourd. Int. J. Veg. Sci., 19: 263-273.
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11. Das, R., U. Thapa, A.R. Mandal, Y.A. Lyngdoh and S. Debnath, 2013. Effect of different levels of organic manures as a source of supplement to nitrogenous fertilizer on growth, yield and quality of Sprouting broccoli (Brassica oleracea L. var Italica Plenk). Environ. Ecol., 31: 334-337.
12. Thapa, U., A.K. Rai and R. Chakarborty, 2012. Growth and yield of okra (Abelmoschus esculentus) as influenced by seed weight. Bioscan, 7: 711-714.
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13. Thapa, U. and R. Rai, 2012. Evaluation of Sprouting broccoli (Brassica oleracea var. italic) genotypes for growth, yield and quality. Int. J. Agric. Sci., 4: 284-286.
14. Thapa, U. and P. Hazra, 2012. Pumpkin and Squash. In: Handbook of Vegetables, Peter, K.V. and P. Hazra (Eds.). Studium Press LLC, Houston, Texas, USA., pp: 491-531.
15. Naik, A., S. Akhtar, U. Thapa and P. Hazra, 2012. Genetic Variability, Heritability and Genetic Advance in Teasle Gourd (Momordica Subangulata Blume. Subsp. Renigera). Environ. Evol., 30: 865-867.
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16. Prasad, P.H., U. Thapa, A.R. Mandal and R. Vishwakarma, 2010. Response of varieties, spacing and aphid management on growth and yield of sprouting broccoli (Brassica oleracea var. italic L.) under West Bengal conditions. Environ. Ecol., 28: 779-782.
17. Yumnam, A., A.R. Mandal, U. Thapa, T.K. Maity and S.P. Bhattacharya, 2009. Studies on Weed Management in Onion ( Allium Cepa L.). J. Crop Weed, 5: 325-326.
18. Prasad, P.H., P. Bhunia, A. Naik and U. Thapa, 2009. Response of Nitrogen and Phosphorus Levels on the Growth and Yield of Chinese Cabbage (Brassica Campestris L. Var. Pekinensis) in the Gangetic Plains of West Bengal. J. Crop Weed, 5: 75-77.
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19. Hazra, P., A. Chattopadhyay, U. Thapa, M.K. Pandit and S. Dutta, 2009. Vegetable Science. In: Basics of Horticulture, Peter, K.V. (Ed.). New India Publishing Agency, New Delhi, India, pp: 101-279.
20. Giri, S., U. Thapa and T.K. Maity, 2009. Evaluation of Onion Cultivars During Kharif Season in the Plains of West Bengal. Indian Agriculturist, 53: 97-98.
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21. Pradhan, S., R. Chatterjee and U. Thapa, 2008. Studies on the year round cauliflower production in open and under cover conditions in the Hill of Darjeeling District. J. Interacad., 12: 16-26.
22. Chattopadhyaya, S.B., P.K. Sahua, U. Thapa and M.N.Kumara, 2007. Effect of Microbial Amendments on Root and Seed Yield of Radish. J. Vegetable Sci., 12: 89-104.
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23. Thapa., U., M. Mandal, S. Giri, P. Tripathy and S.B. Chattopadhyay, 2006. Seed production potentialities of early cauliflower (Brassica oleracea var. botrytis) varieties to different dates of planting under plains of West Bengal. Horticult. J., 19: 236-239.
24. Thapa, U. and P. Tripathy, 2006. Organic Farming in India: Problems and Prospects. 1st Edn., Agro-Tech Publishing House, Udaipur, Rajasthan, India, ISBN-10: 8183210333, Pages: 192.
25. Roy, S.S., S. Giri, P. Tripathy. U. Thapa and T.K. Maity, 2006. Impact of biovita on potato. Horticult. J., 19: 289-294.
26. Thapa, U., P. Ghanti and P. Tripathy, 2005. Evaluation of some Brinjal (Solanum melongena L) cultivars under West Bengal condition. Orissa J. Horticult., 33: 114-117.
27. Thapa, U., M.K. Patti, S.B. Chattopadhay and A.R. Mandal, 2005. Growth and Seed Yield of Onion (Allium Cepa L.) cv. Sukh Sagar as Influenced by Growth Regulator and Bulb Size. Res. Crops, 6: 55-57.
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28. Sharangi, A.B., U. Thapa, A. Pariari, A.R. Mandal, R. Chatterjee and T. Sivakumar, 2005. Effect of nitrogen Rhizobium and cutting management on nodule behaviour of fenugreek. Legume Res. Int. J., 28: 184-188.
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29. Saha, A.K., R. Chakraborty, U. Thapa and P. Ghanti, 2005. Growth and Yield of Pumpkin [Cucurbita Moschata (Duch.) Poir] as Influenced by Different Methods of Irrigation. J. Interacademicia, 9: 28-32.
30. Chaterjee, B., P. Ghanti, U. Thapa and P. Tripathy, 2005. Effect of Organic Nutrition in Sprouting Broccoli (Brassica Oleracea L. Var. Italica Plenck). Vegetable Sci., 32: 51-54.
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31. Thapa, U., R. Das, A.R. Mandal and T.K. Maity, 2004. Growth and seed yield of onion (Allium cepa L.) as influenced by spacing and bulb size. Seed Res., 32: 126-129.
32. Thapa, U. and T.K. Maity, 2004. Influence of Nitrogen, Phosphorus and Number of Cutting on Seed Yield of Fenugreek (Trigonella foenum-graecum). Seed Res., 32: 33-35.
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33. Thapa, U. and T.K. Maity, 2004. Growth and Yield of Basella Sp. as Influenced by Nitrogen and Phosphorus Fertilization with or Without Cutting Treatments. Crop Res., 28: 90-93.
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34. Sarkar, D., A.R. Mondal, U. Thapa, A. Zaman and M.C. Kabi, 2004. Response of garden pea to nitrogen and phosphorus fertilizations along with inoculation of rhizobium and PSB. Green Technol., 6: 17-20.
35. Mondal, S.S., D. Acharya, A. Ghosh and U. Thapa, 2004. Integrated management of organic and inorganic sources of nutrient to improve productivity and qualitative characters of rice and onion in rice-onion cropping sequence. Environ. Evol., 22: 125-128.
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36. Mahato, B., A.R. Mandal, A. Zaman and U. Thapa, 2004. Effect of polythene, Paddy straw and water hyacinth as mulching materials under different levels of irrigation on yield and yield attribute of cauliflower. Green Technol., 6: 21-25.
37. Chettri, M. and U. Thapa, 2004. Integrated nutrient management with farm yard manure on potato (Solanum tuberosum) under gangetic plains of West Bengal. Environ. Ecol., 22: 766-799.
38. Ansary, S.H., P.Ghanti and U. Thapa, 2004. Effect of Irrigation and Nitrogen Fertilization on Yield and Quality of Pumpkin (Cucurbita Moschata Poir.). Vegetable Sci., 31: 66-68.
39. Thapa, U., P. Rai, C.P. Suresh and P. Pal, 2003. Effect of micronutrients on the growth and yield of pea in Gangetic Alluvial soil of West Bengal. Environ. Ecol., 21: 179-182.
40. Thapa, U., M.K. Pati, S.B. Chattopadhay, N. Chattopadhyay, and A B. Sharangi, 2003. Effect of growth regulators on growth and seed yield of chilli (Capsicum annuum L.). J. Interacademicia, 7: 151-154.
41. Thapa, U., B. Mahato, S.B. Chattopadhyay and P. Ghanti, 2003. Growth and yield of some cultivars of Radish (Raphanus sativus) with nitrogen levels. Environ. Ecol., 21: 836-838.
42. Thapa, U. and T.K. Maity, 2003. Green and seed yield of fenugreek (Trigonella foenum graecum L.) as affected by nitrogen, phosphorus and cutting management. J. Interacad., 7: 347-350.
43. Thapa, U. and M.K. Pati, 2003. Effect of Planting Date and Variety on Growth and Curd Yield of Early Cauliflower. Environ. Evol., 21: 664-666.
44. Mondal, T., P. Ghanti, B.Mahato, A.R. Mandaland and U. Thapa, 2003. Effect of Spacing and Biofertilizer on Yield and Yield Attributes of Direct Sown Chilli (Capsicum Annuum) L. Cv Bona Lanka. Environ. Evol., 21: 712-715.
45. Chattopadhyay, S.B., T.P. Mukhopadhyay, and U. Thapa, 2003. Response of Foliar Feeding of Boron and Molybdenum on Growth and Yield of Okra in Terai Zone of West Bengal. Environ. Evol., 21: 702-705.
46. Ansary, H.S., P. Ghanti and U. Thapa, 2003. Effect of irrigation and nitrogen fertilization on growth, development and yield of pumpkin (Cucurbita moschata Poir). Environ. Ecol., 21: 947-950.
47. Thapa, U., T.K. Maity and M.K. Pati, 2002. Effect of Planting Date and Varity on Seed Production of Early Cauliflower. Vegetable Sci., 29: 189-190.
48. Thapa, U. and T.K. Maity, 2002. Response of Amaranthus (Amaranthus sps.) to Nitrogen, Phosphorus Fertilization and Cutting Management. Haryana J. Hortic. Sci., 31: 267-269.
49. Devi, H.J., T.K. Maity, U. Thapa and N.C. Paria, 2002. Effect of Integrated Nitrogen Management on Yield and Economics of Brinjal. J. Interacademicia, 6: 450-453.
50. Devi, H.J., T.K. Maity, N.C. Paria and U. Thapa, 2002. Response of brinjal (Solanum melongena L.) to different sources of nitrogen. Veg. Sci., 29: 45-47.
51. Chettri, M. and U. Thapa, 2002. Response of Potato to Different Sources of Potassium with or Without Farm Yard Manure in New Alluvial Zone of West Bengal. Haryana J. Hortic. Sci., 31: 253-255.
52. Maity, T.K., J.C. Jana and U. Thapa, 1999. Crop growth rate and green yield of palak (Beta vulgaris var. bengalensis HORT) as influenced by nitrogen fertilization and cutting frequencies. J. Andaman Sci. Assoc., 15: 35-38.
53. Jana, J.C., U. Thapa and T.K. Maity, 1999. Green and Seed Yield of Palak (Beta Vulgaris L. Var. Bengalensis Hort.) As Affected by Nitrogen Fertilization and Cutting Management. Vegetable Sci., 26: 61-63.
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