DEVELOPMENT OF SEED TREATMENTS BIOFERTILIZER AND NUTRIENT UPTAKE STUDY USING TRACER TECHNIQUE FOR OKRA PLANTS
Development of biofertilizer seed treatments for okra seeds were carried out by mixing phosphate solubilising bacteria (AP 3) and plant growth promoter (AP 2) with adhesives. The seeds were coated with inoculums and four types of adhesives namely, Gum Arabic; Polyethylene Glycol (PEG); Sodium Alginate and Methycellulose respectively. From eight seed treatments, all seed treatments significantly increased seed germinations except treatment T4 (Gum Arabic and AP3). In general, maximum germination rates and log of viable cells were observed when treated with polyethylene glycol 4000 (PEG) mixed with AP2 (T7) and AP3 (T8). These results show that using PEG as adhesive enhanced the germination rates and log of viable cells of AP2 and AP3. Thus, PEG could be a good adhesive for seed treatment. In greenhouse experiment, okra seeds treatment with AP2 and PEG (T1) showed the highest dry weight compared to other treatments. Seeds treatment with AP3 and PEG (T2) showed higher contribution of N compare to seeds treatment (T1). There were no significant different within seed treatments and urea treatment in okra yield. All treatments significantly increased yields compared with control.