NPK requirement for Annatto (Bixa orellana L.) seed yield and bixin content


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Authors

  • Sudhir Kumar Central Horticulture Experiment Station (IIHR), Chettalli, Kodagu-571 248 (Karnataka)
  • R. Venugopalan Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangaluru (Karnataka)
  • V.K. Rao Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangaluru (Karnataka)
  • A.K. Nair Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangaluru (Karnataka)
  • R. Caithiratchelvan Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangaluru (Karnataka)

Keywords:

Annatto, Seed yield, Response surface model

Abstract

A field experiment was conducted during 2002-07 at Central Horticulture Experiment Station, Chettalii, Karnataka to study the optimum requirement of major nutrients for the optimum seed yield and bixin content in Bixa orellana. Application of 140g N + 60g P2O5 + 150g K2O/pl/year recorded higher seed yield (2.674 kg/plant) in 2006-07 and bixin content during 2004-05 and 2005-06 of experimentation than other treatments. Response Surface Model analysis revealed that the optimum dose of N and KP (With fixed P2O5) for optimum seed yield (2.99 kg/plant) would be 103.15 and 134.94 g/plant, respectively and the optimum dose of the nutrients would be 102.81 g/plant of N and 134.06 g/plant of K2O for the  optimum (2.6%) bixin content.

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Submitted

02-03-2020

Published

20-08-2020

Issue

Vol. 12 No. 2 (2010)

Section

Articles

License

Indian Society of Agroforestry deemed to have copyright on all the articles published in Indian Journal of Agroforestry.

How to Cite

Kumar, S., Venugopalan, R., Rao, V., Nair, A., & Caithiratchelvan, R. (2020). NPK requirement for Annatto (Bixa orellana L.) seed yield and bixin content. Indian Journal of Agroforestry, 12(2). https://epubs.icar.org.in/index.php/IJA/article/view/98669