1Indian Grassland and Fodder Research Institute, Jhansi-284003
2Indian Instt. of Horticultural Research, Bengaluru
Central Horticulture Experiment Station (IIHR), Chettalli, Kodagu-571 248, Karnatakai
* Corresponding author's present address: GSM Division, Indian Grassland and Fodder Research Institute, Jhansi 284003, Uttar Pradesh; E-mail: dr65sudhirkumar@yahoo.co.in
Online published on 17 September, 2012.
A field experiment was conducted during 2002–07 at CHES, Chettalli, Karnataka to study the optimum requirement of major nutrients for the optimum seed yield and bixin content in annatto plant. Application of 140 g N + 60 g P2O5 + 150 g K2O/pl/year recorded higher seed yield (2.674 kg/plant) and bixin content than other treatments. Response Surface Model analysis revealed that the optimum dose of N and K2O (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.
Annatto, seed yield, bixin content, Response Surface Model
