Nursery Propagation of Apple Mangrove Sonneratia alba

抄録

Mangrove rehabilitation conducted on the seafront was a failure because of small survival due to wrong species planted and zonation. Apple mangrove (Sonneratia alba), “pagatpat,” is the most widely distributed mangrove globally, particularly in coastal regions. The study showed that the Sonneratia species bears plenty of fruits, but seedlings rarely grow in the wild. The researcher introduced a ninety-day analysis using various soil media and different watering regimes in a designed concrete tank to determine the survival and growth rates of the nursery propagated apple mangrove seedlings. He observed that the highest average survival rate of S alba seedling was in watering regime Treatment 3 and the type of soil medium was sandy clay. The researcher measured the average survival rate at 23.70% in clay, 52.10% for sandy clay, 44.32% for sandy soil under a watering regime, 37.41% in clay, and 43.21% in sandy clay, and 39.41% in sandy soil. Research showed that the seedlings watered under Treatment 3 observed the highest growth gain (5.41 ± 0.68 cm), while seedlings under Treatment 1 recorded the lowest growth gain (1.87 ± 0.23 cm) under the watering regime. Seedlings planted in sandy-clay soil exhibited the highest growth gain (4.15 ± 0.52 cm), while seedlings planted in clay recorded the lowest growth gain (4.0 ± 0.50 cm) for soil media. Moreover, the researcher observed that growth showed a significant difference in the different watering regimes but had no significant difference in the type of soil media.