Application of Vermicast and Ammonium Phosphate to Potted Pomelo (Citrus maxima)

Abstract

The study sought to determine the response of potted pomelo (Citrus maxima) seedlings to vermicast and ammonium phosphate application. It was laid out in a Complete Randomized Design (CRD) replicated three times with four treatments. There were 12 samples per treatment per replication or a total of 144 pomelo seedlings. The treatments were the following: pure garden soil as the control (T0), 250 grams of vermicast (T1), 15 grams of ammonium phosphate (T2), combination of 125 grams of vermicast + 7.5 grams of ammonium phosphate (T3). The application of vermicast and ammonium phosphate to potted pomelo significantly increases in height and stems girth and consistently produces foliage. This causes to produce heavier shoots and roots compared to potted pomelo planted in pure garden soil. However, root-shoot ratio did not affect with the application of treatment. Based on the result, combination of 125g vermicast+7.5g ammonium phosphate effectively produced quality potted pomelo.