CTCRI - CENTRAL TUBER CROPS RESEARCH INSTITUTE

 Number of Research papers : 65
Research Articles
A. Full Length Papers:
1. Laxminarayana, K. and Subbaiah, G.V. 1996. Influence of added clay and potassium on dry matter
accumulation in groundnut grown on low potassium sandy soil. The Andhra Agricultural
Journal 43(1): 27-29.
2. Laxminarayana, K. and Subbaiah, G.V. 1994. Influence of added clay and potassium on nutrient uptake
at different stages of groundnut grown on a sandy soil. Journal of the Indian Society of Coastal
Agricultural Research 13(1): 19-24.
3. Aariff Khan, M.A., Singhania, R.A., Hameedunnisa Begum, Lakshminarayana, K. and Srinivas, T.
1996. Effect of nitrogen and phosphorus fertilization on nutrient status and uptake in sugarbeet.
International Journal of Tropical Agriculture 14 (1-4): 169-175.
4. Laxminarayana, K. and Rajagopal, V. 2000. Evaluation of chemical methods for the determination of
nitrogen availability in rice soils. International Journal of Tropical Agriculture 18(1): 39-46.
5. Laxminarayana, K. and Rajagopal, V. 2000. Comparison of different methods for evaluation of
available nitrogen. Journal of the Indian Society of Soil Science 48 (4): 797-802.
6. Laxminarayana, K. and Rajagopal, V. 2000. Correlations between indices of nitrogen availability and
dry matter yield, nitrogen uptake and yield response of rice. Journal of the Indian Society of
Coastal Agricultural Research 18(1): 16-20.
7. Laxminarayana, K. 2000. Effect of clay and potassium on yield attributes and nutrient composition in
groundnut (Arachis hypogaea L.). Journal of the Indian Society of Coastal agricultural
Research 18(2): 124-132.
8. Sarma, B.K., Singh, J.K., Verma, D.K., Annadurai, Pattanayak, A. and Laxminarayana, K. 2000.
Collection of crop diversity from north east India. Journal of the Assam Science Society 41(4):
326-335.
9. Laxminarayana, K. and Rajagopal, V. 2002. Relative contribution of different inorganic fractions of
soil phosphorus to P uptake by rice. Journal of Research ANGRAU 30 (4): 17-26.
10. Laxminarayana, K. 2002. Effect of phosphorus solubilizing microorganisms on yield parameters of
paddy. Indian Journal of Hill Farming 15(1): 22-25.
11. Laxminarayana, K. and Rajagopal, V. 2004. Estimation of critical levels of available P for predicting
response of paddy to applied P in submerged soils. Journal of the Indian Society of Soil Science
52(1): 74-79.
12. Laxminarayana, K. 2003. Effect of chemical and biofertilizers on yield and nutrient uptake of rice in
acid soils of Mizoram. Annals of Agricultural Research. 24(4): 760-767.
13. Laxminarayana, K. 2003. Changes in redox potential, pH and inorganic P transformations in
submerged rice soils. Annals of Agricultural Research. 24(4): 880-889.

14. Laxminarayana, K. and Rajagopal, V. 2003. Effect of submergence on P transformation in coastal rice
soils of Andhra Pradesh. Journal of the Indian Society of Coastal Agricultural Research 21 (2):
14-23.
15. Laxminarayana, K. and Rajagopal, V. 2004. Estimation of critical levels of available P for predicting
response of paddy to applied P in submerged soils. Journal of the Indian Society of Soil Science
52(1): 74-79.
16. Laxminarayana, K. and Patiram 2004. Studies on carbon-nitrogen relationship to predict N
availability in rice soils of Mizoram. Journal of Hill Research 17(2): 43-51.
17. Laxminarayana, K. 2004. Effect of organic and inorganic manures on yield and nutrient uptake of
groundnut in Ultisols of Mizoram. Journal of Oilseeds Research 21(2): 280-283.
18. Laxminarayana, K. and Munda, G.C. 2004. Performance of rice (Oryza sativa) and maize (Zea mays)-
based cropping systems under mid-hills of Mizoram. Indian Journal of Agronomy 49(4): 230-
232.
19. Laxminarayana, K. and Patiram 2005. Influence of inorganic, biological and organic manures on yield
and nutrient uptake of groundnut (Arachis hypogaea) and soil properties. Indian Journal of
Agricultural Sciences 75(4): 218-221.
20. Laxminarayana, K. 2005. Effect of P solubilizing microorganisms on yield of rice and nutrient
availability in an acid soil of Mizoram. Journal of the Indian Society of Soil Science. 53(2): 240-
243.
21. Laxminarayana, K. and Rajagopal, V. 2005. Effect of organic matter on P transformations in
submerged soils and their relationship with P availability to rice. Oryza 42(4): 271-279.
22. Laxminarayana, K. and Patiram 2006. Effect of Integrated Use of Inorganic, Biological and Organic
Manures on Rice Productivity and Soil Fertility in Ultisols of Mizoram. Journal of the Indian
Society of Soil Science 54 (2): 213-220.
23. Sanwal, S.K., Laxminarayana, K., Yadav, D.S., Rai, N. and Yadav, R.K. 2006. Growth, Yield, and
Dietary Antioxidants of Broccoli As Affected by Fertilizer Type. Journal of Vegetable Sciences
12(2): 13-26.
24. Laxminarayana, K. and Rajagopal, V. 2006. Organic carbon and available nitrogen relationship in
soils of Andhra Pradesh. Journal of Research ANGRAU 34(3): 30-35.
25. Laxminarayana, K. 2006. Evaluation of available nitrogen indices for rice in soils of Mizoram.
Journal of the Indian Society of Soil Science 54(3): 322-326.
26. Laxminarayana, K., Tulasi Rai and Bhatt, B.P. 2006. Effect of organic sources on soil fertility, yield
and nutrient uptake of rice (Oryza sativa) in degraded Alfisols of Meghalaya. Indian Journal of
Hill Farming 19 (1&2): 11-17.
27. Sanwal, S.K., Laxminarayana, K., Yadav, R.K., Rai, N., Yadav, D.S. and Mousumi Bhuyan. 2007.
Effect of organic Manures on soil fertility, growth, physiology, yield and quality of turmeric.
Indian Journal of Horticulture 64(4): 444-449.
28. Laxminarayana, K. 2007. Distribution of Inorganic P Fractions and Critical Limits of Available P in
Rice Soils of Mizoram. Journal of the Indian Society of Soil Science 55(4): 481-487.
29. Laxminarayana, K., Sanjeev Bharali, Saha, R., Venkatesh, M.S. and Patiram. 2007. Evaluation of
Nitrogen Availability Indices for Predicting Crop Response to Applied N in Rice Soils of
Meghalaya. Journal of Hill Research 20(2): 62-67.
30. Saha, R., Laxminarayana, K. and Venkatesh, M.S. 2007. Water Retention and Transmission
Characteristics of Rice Soils of Meghalaya. International Journal of Tropical Agriculture 25(4):
1011-1017.

31. Laxminarayana, K. 2008. Predicting nitrogen availability for rice (Oryza sativa) through carbon -
nitrogen relationship under Himalayan acidic soils of north east India. Indian Journal of
Agricultural Sciences 78 (7): 592-598.
32. Laxminarayana, K. 2009. Microbial biomass in relation to soil properties under integrated farming
systems of Meghalaya. Indian Journal of Agricultural Sciences 79 (4): 252-258.
33. Laxminarayana, K. 2009. Estimation of soil potassium availability for predicting the response to
applied potassium in rice field. Oryza 46(2): 124-133.
34. Laxminarayana, K. and Rajagopal, V. 2009. Micro nutrient status of some rice soils of Andhra
Pradesh in relation to soil properties. The Andhra Agricultural Journal 55(6): 59-62.
35. Laxminarayana, K., Bhatt, B.P. and Mildonna Swer, 2009. Effect of Mulching on Soil Fertility,
Biomass Production and Nutrient Uptake of Maize in a Degraded Land. Indian Journal of
Agroforestry 11(1): 12-15.
36. Laxminarayana, K. 2010. Microbial Biomass in Relation to Soil Properties under Integrated Farming
Systems of Meghalaya, India. Communications in Soil Science and Plant Analysis 41 (3): 332-
345.
37. Saha, R., Mishra, V. K., Majumdar, B., Laxminarayana, K. and Ghosh, P.K. 2010. Effect of
Integrated Nutrient Management on Soil Physical Properties and Crop Productivity under a
Maize (Zea mays)-Mustard (Brassica campestris) Cropping Sequence in Acidic Soils of
Northeast India. Communications in Soil Science and Plant Analysis 41(18): 2187-2200.
38. Laxminarayana, K. and Sanjeeb Bharali. 2010. Distribution of inorganic N fractions and N
availability indices in the rice soils of Meghalaya. Oryza 47(2): 128-135.
39. Bhatt, B.P. and Laxminarayana, K. 2008. Restoration of shifting cultivation areas through hedgerow
species in eastern Himalayas, India. Indian Journal of Agroforestry.
40. Laxminarayana, K., Burman, D., Singh, D.P. and Naskar, S.K. 2010. Effect of Salinity on Yield,
Quality and Nutrient Uptake of Sweet Potato in Coastal Saline Soils. Journal of the Indian
Society of Coastal Agricultural Research. 28(2): 1-5.
41. Nedunchezhiyan, M., Rajasekhara Rao, K., Laxminarayana, K. and Satapathy, B.S. 2010. Effect of
strip cropping involving sweet potato (Ipomoea batatas L.) on soil moisture conservation,
weevil infestation and crop productivity. Journal of Root Crops 36(1): 53-58.
42. Nedunchezhiyan, M., Laxminarayana, K., Rajasekhara Rao, K. and Satapathy, B.S. 2011. Sweet
potato (Ipomoea batatas L.)-based strip intercropping: I. Interspecific interactions and yield
advantage. Acta Agronomica Hungarica 59(2): 137-147.
43. Laxminarayana, K., Susan John, K., Ravindran, C.S. and Naskar, S.K. 2011. Effect of Lime,
Inorganic and Organic Sources on Soil Fertility, Yield, Quality and Nutrient Uptake of Sweet
Potato in Alfisols. Communications in Soil Science and Plant Analysis 42(20): 2515-2525.
44. Laxminarayana, K. 2012. Location Specific Nutrient Management for Sweet Potato in Coastal Saline
Soils of Andhra Pradesh. Journal of Root Crops 38(1): 38-45.
45. Manas R. Swain, Laxminarayana, K. and Ramesh C. Ray. 2012. Phosphorus Solubilization by
Thermotolerant Bacillus subtilis Isolated from Cow Dung Microflora. Agricultural Research 1
(3): 273-279.
46. Laxminarayana, K. and Burman, D. 2012. Nutrient Management for Sustainable Production of Sweet
Potato (Ipomoea batatas L.) in Saline Inceptisols of West Bengal. Journal of Root Crops 38(2):
126-134.
Laxminarayana, K., Burman, D., Singh, D.P. and Naskar, S.K. 2012. Influence of natural salinity on yield
and proximate composition of sweet potato in coastal saline soils of eastern India. Journal of the
Indian Society of Coastal Agricultural Research 30(2): 1-8.

48. Laxminarayana, K. 2013. Impact of INM on Soil Quality, Yield, Proximate Composition and Nutrient
Uptake of Sweet Potato in Alfisols. Journal of Root Crops 39 (1): 48-55.
49. Laxminarayana, K. and Burman, D. 2013. Location Specific Nutrient Management for Sweet Potato
(Ipomoea batatas L.) in Saline Inceptisols of West Bengal. Journal of the Indian Society of
Coastal Agricultural Research 31(1): 26-33.

B. Short Communications/ Short Notes
1. Laxminarayana, K. and Subbaiah, G.V. 1993. Effect of added clay on the physico-chemical
properties and nutrient status of coastal sandy soil. Journal of the Indian Society of Coastal
Agricultural Research 11(1): 49-52.
2. Laxminarayana, K. and Subbaiah, G.V. 1995. Effect of mixing of sandy soil with clay Vertisol and
potassium on yield and nutrient uptake by groundnut. Journal of the Indian Society of Soil
Science 43(4): 694-696.
3. Laxminarayana, K. and Subbaiah, G.V. 1996. Improving the physical properties of coastal sandy soil
by hybridization with clayey soil. The Andhra Agricultural Journal 43(1): 81-82.
4. Laxminarayana, K. and Azad Thakur, N.S. 1999. Effect of phosphorus on yield performance of
wheat in acidic soils of Mizoram. Journal of Hill Research 12(2): 138-140.
5. Laxminarayana, K. and Rajagopal, V. 1999. Zinc status of some rice soils of Andhra Pradesh.
Micronutrient News Letter 13(11): 2-3.
6. Laxminarayana, K. 2000. Effect of integrated use of organic and inorganic manures on yield of low
land paddy. Journal of Hill Research 13(2): 125-127.
7. Laxminarayana, K. 2001 Evaluation of extractants for available phosphorus in soils for rice (Oryza
sativa). Indian Journal of Agricultural Sciences 71(1): 51-54.
8. Laxminarayana, K. and Azad Thakur, N.S. 2001. Effect of different dates of sowing and genotypes
on yield performance of maize under mid hills of Mizoram. Indian Journal of Hill Farming
14 (1): 117-119.
9. Laxminarayana, K. 2001. Effect of nitrogen, phosphorus and potassium on yield performance of
maize under mid hills of Mizoram. Indian Journal of Hill Farming 14 (1): 132-135.
10. Laxminarayana, K. 2001. Effect of Azotobacter and Azospirillum on yield performance of maize in
hilly regions of Mizoram. Indian Journal of Hill Farming 14 (2): 134-137.
11. Laxminarayana, K. and Rajagopal, V. 2002. Effect of submergence on phosphorus status and
transformations in rice (Oryza sativa) soils. Indian Journal of Agricultural Sciences 72 (7):
411-415.
12. Laxminarayana, K. 2003. Determination of available phosphorus by iron oxide impregnated filter
paper soil test for rice (Oryza sativa). Indian Journal of Agricultural Sciences 73(12): 684-
687.
13. Laxminarayana, K. 2006. Effect of integrated use of inorganic and organic manures on soil
properties, yield and nutrient uptake of rice in Ultisols of Mizoram. Journal of the Indian
Society of Soil Science 54 (1): 120-123.
14. Laxminarayana, K. 2010. Nature of soil acidity and lime requirement in acid soils of Meghalaya.
Journal of the Indian Society of Soil Science 58(2): 233-236.
15. Laxminarayana, K. Sanjeeb Bharali and Patiram 2011. Evaluation of chemical extraction methods for
available potassium in rice soils of Meghalaya. Journal of the Indian Society of Soil Science
59(3): 295-299

16. Laxminarayana, K. 2011. Response of rice to phosphorus in acid soils of Meghalaya in relation to its
forms and availability. Journal of the Indian Society of Soil Science 59(3): 304-307.
Technical Articles
1. Azad Thakur, N.S. and Laxminarayana, K. 1998. Mizoram Mein Bagvani ki Sambhavaneyen.
Purvottar Parvatiya Krishi 5: 26-27.
2. Azad Thakur, N.S. and Laxminarayana, K. 1999. Mizoram ek Simhalokan. Purvottar Parvatiya Krishi
6: 51.
3. Laxminarayana, K. and Verma, D.K. 2000. Diversified uses of maize. Zoram Loneitu 42(2): 32-35.
4. Laxminarayana, K., Azad Thakur, N.S. and Verma, D.K. 2001. Baby corn – A potential crop for
cultivation in Mizoram. Zoram Loneitu 42 (3): 42-46.
5. Laxminarayana, K. 2001. Effect of integrated use of organic and inorganic manures on yield
parameters of groundnut. Zoram Loneitu 43(1): 35-38.
6. Laxminarayana, K. 2001. Management of water resources for higher sustainable production of maize in
Mizoram. Zoram Loneitu 43 (2): 37-43.
7. Laxminarayana, K. 2001. Role of biofertilizers for enhancing the maize productivity in Mizoram.
Zoram Loneitu 43 (3): 27-33.
8. Azad Thakur, N.S. and Laxminarayana, K. 2001. Maize production scenario in Mizoram. Journal of the
North Eastern Council 21(4): 25-28.
9. Laxminarayana, K. 2002. Role of biofertilizers for enhancing the maize productivity in Mizoram.
Journal of the North Eastern Council 22(1): 21-25.
10. Laxminarayana, K. 2002. Management of natural resources for sustainable crop production in
irrigated command areas of Mizoram. Zoram Loneitu 44 (1): 44-49.
11. Laxminarayana, K. 2002. Scope and prospectus of rabi maize cultivation in Mizoram. Zoram Loneitu
44 (3): 24-28.
12. Laxminarayana, K. 2003. Effect of long term use of organic and inorganic manures on sustainable
crop production. Zoram Loneitu 44 (4): 31-33.
13. Laxminarayana, K. 2004. Usage of biofertilizers for sustainable crop production. Zoram Loneitu 45
(1): 36-41.
14. Laxminarayana, K. 2004. Prospects of palm based cropping systems in Mizoram. Huan Enkawltu
12(1): 31-33.
15. Nedunchezhiyan, M. and Laxminarayana, K. 2006. Tuber crops based cropping systems in Eastern
India. Kisan World 33 (11): 45-46.
16. Sushanta Kumar Jata, Nedunchezhiyan, M. and Laxminarayana, K. 2011. Site specific nutrient
management for rice. Orissa Review 67(11): 62-64.
17. Laxminarayana, K. 2012. Scope of Sweet Potato in Saline Soils of Odisha for Livelihood and
Nutritional Security. Odisha Horticulture 1(2): 28-36.
18. Sivakumar, P.S., Anantharaman, M., Ramanathan, S., Misra, R.S., Laxminarayana, K. and Jha, A.K.
2013. Technologies to make food- and livelihood secured. Indian Horticulture 58(3): 41-44.
19. Susan John, K., Laxminarayana, K. and Ravindran, C.S. 2013. Meeting nutrient demand of tubers.
Indian Horticulture 58(3): 45-49.
20. Laxminarayana, K. 2013. Vermiculture Technology for Maintenance of Soil Quality and Sustainable
Crop Production. Odisha Horticulture 2 (2): 37-54.

 Number of Books/Book chapters (Add list):

1. Laxminarayana, K. 2000. Agroforestry for fertility improvement and management of soils. In Natural
Resources Conservation and Management for Mountain Development (Eds. Tiwari, S.C. and
Dabral, P.P.), International Book Distributors, Dehra Dun, India. pp: 323-331.
2. Patiram, Datta, M., Ram, M., Kailash Kumar, Majumdar, B., Venkatesh, M.S., Misra, V.K.,
Raichowdhury, M. and Laxminarayana, K. 2002. Management of soils for sustainable
production. In Steps towards Modernization of Agriculture in NEH Region (Eds. Verma, N.D.
and Bhatt, B.P.), Venus Printers and Publishers, New Delhi. pp: 393-415.
3. Azad Thakur, N.S. and Laxminarayana, K. 2002. Status and prospectus of Olericulture in Mizoram.
In Vegetable Growing in India (Eds. Prem Singh Arya and Sant Prakash), Kalyani Publishers,
Ludhiana. Pp: 152-162.
4. Azad Thakur, N.S. and Laxminarayana, K. 2004. Socio-economic and Institutional issues in
watershed management in Mizoram. In Watershed Management – Social and Institutional
Issues in Northeast India (Eds. K.K. Satapathy and K.N. Agrawal), Published by Director,
ICAR Research Complex for NEH region, Umiam, Meghalaya, pp 300-304.
5. Laxminarayana, K., Bhatt, B.P. and Tulsi Rai. 2005. Soil Fertility Build up through Hedgerow
Intercropping in Integrated Farming System: A Case Study. In Agroforestry in North East
India: Opportunities and Challenges (Eds. B.P. Bhatt and K.M. Bujarbaruah), Published by
Director, ICAR Research Complex for NEH Region, Umiam, Meghalaya, pp 479-490.
6. Bhatt, B.P., Laxminarayana, K., Singh, K. and Tulsi Rai 2005. Restoration of Degraded Lands
through Agroforestry Interventions. In Agroforestry in North East India: Opportunities and
Challenges (Eds. B.P. Bhatt and K.M. Bujarbaruah), Published by Director, ICAR Research
Complex for NEH Region, Umiam, Meghalaya, pp 427-436.
7. Laxminarayana, K., Datta, M., Sharma, Y.P., Sharma, U.C. and Gopichand, B. 2006. Soil Microbes
and Biofertilizers. In Soils and their Management in North East India (Eds. U.C. Sharma, M.
Datta and J.S. Samra), Published by Director, ICAR Research Complex for NEH Region,
Umiam, Meghalaya pp. 242-279.
8. Sreekanth, A., Nedunchezhiyan, M., Laxminarayana, K., Misra, R.S., Rajasekhara Rao, K. and Siva
Kumar, P.S. 2010. Sustainable production of sweet potato and technology transfer for enhanced
yields in Orissa. In Sustainable sweet potato production and utilization in Orissa, India (Eds.
Sreekanth, A., Janardhan, K.V. and Alison Light). Published by International Potato Center,
South, West and Central Asia Region, CIP Liaison Office, Bhubaneswar, pp. 11-18.
9. Laxminarayana, K. 2010. Nutrient management in tuber crops. In Agro-techniques and value addition
in tropical tuber crops. Published by Head, Regional Centre of CTCRI, Bhubaneswar, Orissa,
sponsored by Orissa Tribal Empowerment and Livelihood Programme, Department of Tribal
Welfare, Govt. of Orissa, pp. 59-70.
10. Sivakumar, P.S., Anantharaman, M., Ramanathan, S., Misra, R.S., Laxminarayana, K. and Jha,
A.K. 2013. CTCRI Rooting Ahead to North-Eastern Hill India, Central Tuber Crops
Research Institute, Thiruvananthapuram, Kerala, pp. 1-32.
Technical bulletins
1. Laxminarayana, K. 2013. Sweet Potato for Livelihood and Nutritional Security in Coastal Saline
Soils of Odisha, Technical Bulletin 59.CTCRI, Thiruvananthapuram

2. Sivakumar, P.S., Anantharaman, M., Ramanathan, S., Misra, R.S., Laxminarayana, K. and Jha, A.K. 2013. CTCRI Rooting Ahead to North-Eastern Hill India, Central Tuber Crops Research Institute, Thiruvananthapuram, Kerala, pp. 1-32. 

3. Murugesan, P., Laxminarayana, K., Visalakshi Chandra, C., Namrata A. Giri, Suresh Kumar, J., Sanket J. More and Sethuraman Sivakumar. P. 2020. Genetic Resources, Agro-techniques, Value Addition and Utilisation in Tropical Tuber Crops: Current prospects for North Eastern States in India. Technical Bulletin No. 80. ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, Kerala, 63 p.

4. Namrata, A. G., Sanket, J. M., Murugesn, P., Laxminarayan, K., Visalakshi, C.C., Suresh, K.J., Sivakumar, P.S. 2020. Tuber crops based traditional food recipes of Tripura. Technical Bulletin No. 79. ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, Kerala, 44 p. 

5. Laxminarayana, K. 2020. Agro-techniques in Tropical Root and Tuber Crops in Perspective to NEH Region. In Genetic Resources, Agro-techniques, Value Addition and Utilisation in Tropical Tuber Crops: Current prospects for North Eastern States in India Technical Bulletin No. 80. ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, Kerala, pp. 10-26.

6. Sunitha, S., Laxminarayana, K., Veena, S.S., Jyothi, A.N., Santosh Mithra, V.S. and Kalidas Pati 2023. Taro. Technical Bulletin No. 96. ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, Kerala, 42 p. 

Extension Folders 

1. Sanket J.M, Murugesan, P., Laxminarayana, K., Namrata, A.G., Visalakshi, C.C, Suresh K.J., Sasankan, V.R. 2020. The rainbow diet through tuber crops (English). Extension folder no. 08/2020, ICAR-Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram, Kerala

Papers presented in Seminars/ Symposia/ Workshops: 58

1. Laxminarayana, K., Azad Thakur, N.S., Prasad, K. And Rajesh Kumar 1998.Effect of phosphorus on yield performance of wheat in acidic soils of Mizoram.National Seminar on Management Strategies for North Eastern Hilly Ecosystem held at ICAR Research Complex for NEH Region, Umiam, 8-10th August, 1998.

2. Laxminarayana, K. And Azad Thakur, N.S. 1999.Effect of integrated use of organic and inorganic manures on yield parameters of lowland paddy.National Level Seminar cum Awareness Campaign on Economic Development of Mizoram held at Aizawl from 13-15th December, 1999.

3. Azad Thakur, N.S. and Laxminarayana, K. 2000. Workshop on Mizo Method of Pit Digging Cultivation held at Aizawl on 23rd April, 2000.

4. Laxminarayana, K. And Gopichand, B. 2000. Natural resource management through agroforestry. “International Workshop on Agroforestry and Forest Products”, held at Aizawl, Mizoram from 28-30thNovember, 2000.

5. Gopichand, B. And Laxminarayana, K. 2000. Shifting cultivation and its impact on natural resources in North Eastern Region. “International Workshop on Agroforestry and  Forest Products”, held at Aizawl, Mizoram from 28-30th November, 2000.

6. Laxminarayana, K. 2000. Effect of integrated use of organic and inorganic manures on yield parameters of low land paddy.National Seminar on “Perspectives and policies for land use planning”, held at NBSS&LUP, Nagpur from 27-30th December, 2000.

7. Laxminarayana, K. 2001. Effect of Azotobacter and Azospirillum on yield performance of maize in hilly regions of Mizoram.5th Agricultural Science Congress on “Sustainable Development of Mountain Agriculture”, held at Guwahati from 4-7th April, 2001.

8. Laxminarayana, K. 2001. Effect of integrated use of organic and inorganic manures on yield parameters of groundnut.National Seminar on Approaches for increasing agricultural productivity in hill and mountain ecosystem, ICAR Research Complex for NEH Region, Umiam, Meghalaya from 18-20th October, 2001.

9. Laxminarayana, K. 2001. Efficiency of phosphorus solubilizing microorganisms on yield performance of lowland paddy.National Seminar on Approaches for increasing agricultural productivity in hill and mountain ecosystem, ICAR Research Complex for NEH Region, Umiam, Meghalaya from 18-20th October, 2001.

10. Laxminarayana, K. 2001. Effect of integrated use of organic and inorganic manures on yield and nutrient uptake in groundnut.National Seminar on Developments in Soil Science: 2001, Rajasthan College of Agriculture, Udaipur from 30th October to 2nd November, 2001.

11. Laxminarayana, K. 2001. Correlations between indexes of soil nitrogen availability and dry matter yield, nitrogen uptake and yield response of rice.6th National Seminar on Resource management for higher sustainable production in coastal areas, Acharya N.G. Ranga Agricultural University, Rajendranagar, Hyderabad from 20-23rd November, 2001.

12. Laxminarayana, K. 2002. Effect of organic and inorganic manures on soil properties, yield and nutrient uptake of paddy.National Seminar on Developments in Soil Science: 2002, Jawaharlal Nehru KrishiVishwavidyalaya, Jabalpur from 11-15th November, 2002.

13. Laxminarayana, K. 2003. Effect of chemical and biofertilizers on yield and nutrient uptake of rice in acid soils of Mizoram.National Seminar on Developments in Soil Science: 2003, Chandra Sekhara Azad University of Agriculture and Technology, Kanpur from 4-8th November, 2003. 

14. Laxminarayana, K. 2003. Effect of phosphorus solubilizing microorganisms on yield and nutrient uptake of paddy in an acid soil of Mizoram.National Seminar on Developments in Soil Science: 2003, Chandra Sekhara Azad University of Agriculture and Technology, Kanpur from 4-8th November, 2003.

15. Laxminarayana, K. 2004. International Conference on Organic Food held at ICAR Research Complex for NEH Region, Barapani, Shillong, Meghalaya from 15-17th February, 2004.

16. Laxminarayana, K. 2004. Estimation of critical limits of available nitrogen in rice soils of Mizoram”.  National Seminar on ‘Developments in Soil Science – 2004’ held at ANGR Agricultural University, Rajendranagar, Hyderabad from 27-30th October, 2004.

17. Laxminarayana, K. 2005. Evaluation of chemical methods for determination of critical limits for nitrogen availability in rice soils of Mizoram. International Conference on Soil, Water and Environmental Quality – Issues and Strategies held at IARI Campus, Pusa, New Delhi from 28th January to 1st February, 2005.

18. Laxminarayana, K. 2006. Influence of farming systems on microbial biomass in Alfisols under mid hills of Meghalaya. National Seminar on Developments in Soil Science: 2006, Orissa University of Agriculture & Technology, Bhubaneswar from 10-13th November, 2006.

19. Laxminarayana, K. 2006. Effect of inorganic, biological and organic manures on soil properties, yield and nutrient uptake of groundnut.National Seminar on Developments in Soil Science: 2006, Orissa University of Agriculture & Technology, Bhubaneswar from 10-13th November, 2006.

20. Laxminarayana, K.,  Mukherjee, A. And Naskar, S.K. 2006. Effect of inorganic and organic sources on yield and quality of sweet potato.14th Triennial Symposium of the International Society for Tropical Root Crops, held at the Central Tuber Crops Research Institute, Trivandrum from 20-26th November, 2006.

21. Laxminarayana, K., Mukherjee, A., Susan John, K., Naskar, S.K. and Ravindran, C.S. 2007. Effect of integrated use of inorganic, biological and organic sources on yield and quality of sweet potato in acidic Ultisols of Orissa.International Symposium on ‘Management of coastal ecosystem: Technological advancement and livelihood security’ held at Science City, Kolkata from 27-30 October, 2007. 

22. Nedunchezhiyan, M., Naskar, S.K. and Edison, S. 2007. Tuber crops for coastal agro-ecosystem of Orissa. International Symposium on ‘Management of coastal ecosystem: Technological advancement and livelihood security’ held at Science City, Kolkata from 27-30 October, 2007. 

23. Laxminarayana, K. 2007. Suitability of soil test methods for available nitrogen for rice in the soils of Mizoram.National Seminar on Developments in Soil Science : 2007 held at the Birsa Agricultural University, Ranchi, Jharkhand from 2-5th November, 2007.

24. Laxminarayana, K. Nedunchezhiyan, M. And Naskar, S.K. 2007. Integrated Nutrient Management in Tuber Crops.Seminar on “Road-Map for Agricultural Development in Orissa held at the Orissa University of Agriculture & Technology from 6-7th November, 2007.

25. Nedunchezhiyan, M., Laxminarayana, K., Naskar, S.K. and Edison, S. 2007. Resource use efficiency of yams and aroids in mixed farming. Seminar on “Road-Map for Agricultural Development in Orissa held at the Orissa University of Agriculture & Technology from 6-7th November, 2007.

26. Laxminarayana, K., Susan John, K., Mukherjee, A. And Naskar, S.K. 2008. Effect of inorganic, biological and organic manures on yield and quality of sweet potato.3rd Indian Horticulture Congress – 2008 held at the Orissa University of Agriculture & Technology from 6-9th November, 2008.

27. Laxminarayana, K., Susan John, K. And Naskar, S.K. 2008. Influence of lime, biological, inorganic and organic manures on soil fertility, yield, nutrient uptake and quality of sweet potato in an Ultisol. National Seminar on ‘Developments in Soil Science – 2008’ held at the University of Agricultural Sciences, Bangalore from 27-30th November, 2008.

28. Laxminarayana, K. 2009. Distribution of inorganic fractions and critical limits of available phosphorus in acidic soils of north eastern Himalayan region.96th Indian Science Congress held at the North Eastern Hill University, Shillong, Meghalaya from 3-7th January, 2009.

29. Laxminarayana, K. 2009. Organic carbon as an index to assess the available nitrogen status in some Himalayan acidic soils of northeast India.9th Agricultural Science Congress held at Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Kashmir from 22 – 24th June, 2009.

30. Laxminarayana, K. 2009. Estimation of Potassium Availability and Forms of K for Predicting Response of Applied K to Rice in Acid Soils of Meghalaya.International Symposium on “Potassium Role and Benefits in Improving Nutrient Management for Food Production, Quality and Reduced Environmental Damages” held at Orissa University of Agriculture & Technology, Bhubaneswar, Orissa from 5 – 7th November, 2009.

31. Laxminarayana, K., Burman, D., Susan John, K., Singh, D.P. and Naskar, S.K. 2010. Effect of salinity on yield, quality and nutrient uptake in sweet potato: A participatory approach towards food and nutritional security in coastal saline soils. 9th National Seminar on Recent outlook on sustainable agriculture, livelihood security and ecology of coastal region held at Calangute, Goa from 27-30th October, 2010, organized by ISCAR in collaboration with Dr. BalasahebSawantKonkanKrishiVidyapeeth, Ratnagiri, Dapoli (Maharasthra) and CSSRI, Karnal (Haryana)., P. 60. 

32. Laxminarayana, K., Susan John, K., Ravindran, C.S. and Naskar, S.K. 2010. Effect of Integrated Use of Lime, Biological, Inorganic and Organic Sources on Soil Fertility, Yield and Quality of Sweet Potato in Alfisols.National Seminar on ‘Developments in Soil Science – 2010’ held at the Indian Institute of Soil Science from 14-17th November, 2010.

33. Laxminarayana, K. 2010. Forms and Availability of Phosphorus for Predicting Response of Rice to Applied P in Acidic Soils of Meghalaya.National Symposium on‘Sustainable Rice Production System under Changed Climate’ held at CRRI, Cuttack from 27-29 November, 2010.

34. Laxminarayana, K. 2011. Role of tuber crops for livelihood and food security. Workshop on Promotion of sweet potato cultivation for livelihood & nutrition improvement held at Parlakhemundi, Gajapati, organized by Programme for Rural Awareness and Very action (PRAVA) on 7.7.2011 as supported by NABARAD.

35. Laxminarayana, K., Burman, D., Singh, D.P. and Naskar, S.K. 2012. Effect of Salinity on Yield, Quality and Nutrient Uptake of Sweet Potato in Coastal Saline Soils.99th Indian Science Congress held at the Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha from 3-7th January, 2012.

36. Laxminarayana, K. 2012. Bio-chemical characterization, value addition and alternative uses of colocasia.Global Conference on Aroids: Opportunities & Challenges organized by Regional Centre of CTCRI, Bhubaneswar from 23-25th January, 2012 (Oral presentation).

37. Laxminarayana, K. 2012. Effect of Salinity on Yield, Nutrient uptake and Proximate Composition of Sweet potato (Ipomoea batatas L.) in Alfisols of Andhra Pradesh” in the ‘Global Conference on Horticulture for Food, Nutrition and Livelihood Options’ held at Orissa University of Agriculture & Technology, Bhubaneswar from 28-31st May, 2012.

38. Laxminarayana, K. And ArchanamaiNaik 2012.Determination of microbial variables in relation to hysic-chemical properties of coastal saline soils of Odisha.National Seminar on ‘Developments in Soil Science – 2012’ held at the Punjab Agricultural University, Ludhiana, Punjab from 3-6th December, 2012 (Oral presentation).

39. Laxminarayana, K. 2013. XIth Agricultural Science Congress held at Orissa University of Agriculture & Technology, Bhubaneswar from 7-9th February, 2013.

40. Laxminarayana, K. 2013. Forms and Availability of Phosphorus for Predicting Response of Rice to P in Some Himalayan Acidic Soils of North East India. ARRW Golden Jubilee International Symposium on “Sustainable Rice Production and Livelihood Security: Challenges and Opportunities” held at Central Rice Research Institute, Cuttack from 2-5th March, 2013.

41. Laxminarayana, K. 2013. Effect of Lime, Mycorrhiza, Inorganic and Organic Manures on Soil Quality, Yield, Proximate Composition and nutrient uptake of Sweet Potato in Alfisols.International Conference on ‘Tropical Roots and Tubers for Sustainable Livelihood under Changing Agro-climate’ held at Trivandrum from 9 – 12 July, 2013 (Oral presentation).

42. Laxminarayana, K. 2013. Effect of Inorganic, Biological and Organic Manures on Enzyme Activities in Relation to Yield and Quality of Colocasia in Acid Alfisols.National Seminar on ‘Developments in Soil Science – 2013’ held at the Central Arid Zone Research Institute, Jodhpur, Rajasthan during 23-26th October, 2013 (Oral presentation).

43. Laxminarayana, K. 2014. Response of Mycorrhiza, Organic Sources, Secondary and Micro Nutrients on Soil Microbial Activities and Yield Performance of Colocasia in Alfisols.National Seminar on ‘Developments in Soil Science –2014’held at the ANGR Agricultural University, Hyderabad during 24-27th November, 2014 (Oral presentation).

44. Laxminarayana, K. 2015. Effect of Mycorrhiza, Lime, Inorganics and Organic Sources on Soil Quality and Yield Performance of Yam Bean in Acid Alfisols.National Seminar on ‘Developments in Soil Science –2015’  held at the UAS, GKVK, Bangalore during 5-8th December, 2015 (Oral presentation)

45. Laxminarayana, K. And Subramani, T. 2016. Performance of Sweet Potato in Natural Saline Soils under Island Ecosystem of Andaman. 11th National Symposium on “Innovations in Coastal Agriculture – Current Status and Potential under Changing Environment” held at ICAR-IIWM, Bhubaneswar during 14-17th January, 2016 (Oral presentation).

46. Laxminarayana, K. 2016. Effect of Inorganics and Organic Sources on Soil Quality and Yield Performance of Elephant Foot Yam in Acid Alfisols. National Seminar on Developments in Soil Science-2016 held at the RajmataVijayarajeScindiaKrishiVishwavidyalaya, Gwalior from 20 – 23rd October, 2016.

47. Laxminarayana, K. 2016.  National Seminar on ‘Soil Health Assessment with Mridaparikshak’ held at the ICAR – Indian Institute of Soil Science, Bhopal being sponsored by NagarjunaAgochemicalsPvt. Ltd., Hyderabad from 4-5th November, 2016

48. Laxminarayana, K. 2017. Effect of phosphorus and potassium on yield, nutrient uptake and proximate composition of sweet potato under saline Island ecosystem of Andaman. National Seminar on Developments in Soil Science – 2017 held at the Amity University, Kolkata during December 11 – 14, 2017.

49. Laxminarayana, K. 2018. Effect of Integrated Use of Inorganic and Organics on Soil Quality, Yield and Proximate Composition of Elephant Foot Yam – Blackgram Cropping System in Alfisols. National Seminar on Developments in Soil Science – 2018 held at the Anand Agricultural University, Anand, Gujarat during November 27 – 30, 2018.

50. KalidasPati, Chauhan, V.B.S., M. Nedunchezhiyan, Laxminarayana, K., HanumeGowda, K. and Bansode, V.V. 2019. Genetic resources and conservation of climate resilient and nutritionally rich tuber crops for food and nutritional security of Odisha. Seminar on Farmers First for Conserving Soil and Water Resources in Eastern Region held at Koraput, Odisha from 6-8th February, 2019. Organized by Indian Association of Soil and Water Conservationists, Dehradun.P. 78.

51. Nedunchezhiyan, M., Laxminarayana, K., Pati, K., Chauhan, V.B.S., Gowda, K.H. and Bansode, V.V. Sweet potato and yam bean for sustainable yield and soil conservation under hill farming. Seminar on Farmers First for Conserving Soil and Water Resources in Eastern Region held at Koraput, Odisha from 6-8th February, 2019. Organized by Indian Association of Soil and Water Conservationists, Dehradun.

52. Das, Madhumita, Anand, P.S.B., Roy Chowdhury, S. and Laxminarayana, K. (2018). Prospect of remediating Cr(VI) from Cr (VI) contaminated water sources in Chromite mine areas at Sukhinda, Odisha, presented in the National Seminar on Developments in Soil Science – 2018 held at the Anand Agricultural University, Anand, Gujarat during November 27 - 30, 2018.

53. Laxminarayana, K. 2019. Influence of Inorganic and Organics on Soil Microbial Activities, Yield and Quality of Elephant Foot Yam – Blackgram Cropping System in Alfisols. National Seminar on Developments in Soil Science – 2019 held at the Banaras Hindu University, Varanasi, Uttar Pradesh during November 14 - 17, 2019.

54. Laxminarayana, K., PriyankaBarik and Nedunchezhiyan, M. 2020. Effect of Organic and Inorganic Nutrients on Soil Health, Yield and Quality of Colocasia. National Seminar on “Climate Smart Agriculture for Enhancing Farm Profitability” held at the Odisha University of Agriculture and Technology, Bhubaneswar during January 28 - 29, 2020.

   55. Laxminarayana, K. 2022. Organic and Inorganic Fertilization on Soil Fertility, Yield and Proximate Composition of Elephant foot yam. National Seminar on Developments in Soil Science – 2022 held at the Mahatma Phule Krishi Vidyapeeth, Rahuri - 413722, Maharashtra during November 15 - 18, 2022. 

  56. Laxminarayana, G. Suja, Kalidas Pati and M. Nedunchezhiyan 2023. Effect of Organic and Inorganic Fertilization on Yield Performance of Bio-fortified Sweet Potato in Alfisols of Coastal Odisha. National Symposium on ‘Fostering Resilient Coastal Agro-Ecosystems’ being held at the Regional Agricultural Research Station, ANGR Agricultural University, Tirupati, Andhra Pradesh from 22 – 25 February, 2023.

57. Laxminarayana, K., Anjana, J.M., Byju, G., Susan John, K., Kalidas Pati, Arutselvan, R., and Nedunchezhiyan, M. 2023. Organic and Inorganic Fertilization on Dynamics of NPK in Relation to Yield and Proximate Composition of Colocasia. National Conference on Tropical Tuber Crops for Sustainability. Tradition, Agri-food Systems & Resilience (NCTTC 4 STAR) held at ICAR-CTCRI, Trivandrum, Kerala from 28-29th November, 2023.

58. Laxminarayana, K., Suja, G., Susan John, K., Byju, G. and Arutselvan, R. 2024, Organic and Inorganic Fertilization on Soil Health, Yield and Proximate Composition of Greater Yam (Dioscorea alata) in Alfisols. Global Soils Conference 2024 Caring Soils Beyond Food Security : Climate Change Mitigation & Ecosystem Services' held at the NASC Complex, Pusa, New Delhi from 19 - 22 November, 2024