Indian Institute of Horticultural Research, Bangalore 560 080.
* Present address: Central Horticultural Experiment Station, Chethalli 571 248, Kodagu (Karnataka).
Organial manures, such as farm yard manure, poultry manure and horse manure were used to study the uptake of major nutrients in okra. The uptake of nitrogen and phosphorus was greater in the treatment combination of half inorganic and half organic nitrogen, particularly from poultry manure. The highest potassium uptake was observed in the plants when applied with equal quantities of organic and inorganic nitrogen. Calcium and magnesium uptake was markedly influenced by the application of 20 kg nitrogen (as ammonium sulphate) and 20 kg nitrogen from organic source, particularly with poultry manure.
