Evaluation of sweet potato (Ipomoea batatas) based strip intercropping systems for yield, competition indices and nutrient uptake

Indian Journal of Agronomy

Volumn 56, Issue 2, 2011, Pages 98-103

  Nedunchezhiyan, M ^a  

^a Central Tuber Crops Research Institute Bhubaneswar   (India)

Author keywords

Area time equivalent ratio; Competition ratio; Land equivalent ratio; Nutrient uptake; Root equivalent yield; Sweet potato

Indexed keywords

EID: 83155173139     PISSN: 0537197X     EISSN: 09744460     Source Type: Journal    
DOI: None     Document Type: Article

References (15)

1. Aasim, M., Umer, EM. and Karim, A. 2008. Yield and competition indices of intercropping cotton (Gossypium hirsutum L.) using different planting patterns. Tarim Bilimleri Dergisi 14(4): 326-333.
2. Banik, P., Samsal, T., Ghosal, P.K. and Bagchi, D.K. 2000. Evaluation of mustard (Brassica compestris var toria) and legume intercropping under 1:1 and 1:2 row replacement series system. Journal of Agronomy and Crop Science 185: 9-14. (Pubitemid 30495867)
3. De Witt, C.T. 1960. On competition. Versiag Landbouw-Kundige Onderzoek66: 1-28.
4. Dhima, K.V. Lithourgidis, AS., Vasilakoglou and Dordas, C.A. 2007. Competition indices of common vetch and cereal intercrops in two seeding ratio. Field Crops Research 100: 249-256. (Pubitemid 44829910)
5. Dutta, D., and Bandyopadhyay, P. 2006. Production potential of intercropping of groundnut (Arachis hypogaea) with pigeonpea (Cajanus cajan) and maize (Zea mays) under various row proportions in rainfed Alfisols of West Bengal. Indian Journal of Agronomy 51: 103-106. (Pubitemid 46549487)
6. Ghosh, P.K. 2004. Growth, yield, competition and economics of groundnut/cereal fodder intercropping in the semi-arid tropics of India. Field Crops Research 88: 227-237. (Pubitemid 38630014)
7. Gomez, K.A. and Gomez, A.A. 1984. Statistical procedures fir agricultural research. John Wiley & Sons, New York.
8. Harper, J.L. 1961. Approaches to study of plant competition. In: Mechanisms in Biological Competition. (Milthrope, F.L. Ed.), 1-39 pp, 15th Symposium of Society of Experimental Biology, Cambridge University Press, Cambridge.
9. Hiebsch, C.K. 1980. Effect of N fertilization and crop duration on equivalency ratios in intercrops versus monoculture comparisons. Ph.D Thesis. North Carolina State Unversity, Raleigh, N.C., USA.
10. McGilchrist, C.A. 1965. Analysis of competition experiments. Biometrics 21: 975-985.
11. Nedunchezhiyan, M. and Srinivasulu Reddy, D. 2002. Nitrogen management in sweet potato (Ipomoea batatas L.) under rainfed conditions. Indian Journal of Agronomy 47(3): 449-454. (Pubitemid 36922411)
12. NHB. 2006. Indian Horticulture Database. National Horticulture Board, Gurgoan, India pp. 198-200.
13. Njoku, SC, Muoneke, CO., Okpara, D.A. and Agbo, F.M.O. 2007. Effect of intercropping varieties of sweet potato and okra an ultisol of southeastern Nigeria. African Journal of Biotechnology 6(14): 1650-1654. (Pubitemid 47201818)
14. Willey R.W. 1979. Intercropping - its importance and research needs. Part I: Competition and yield advantage. Field Crops Abstracts 31(1): 1-10.
15. Willey, R.W. and M.R. Rao. 1980. A competitive ratio for quantifying Competition between intercrops. Experimental Agriculture 16:117-125.