Field experiment on rhizophora planting in mud flat area, Khumg Krabaen bay
1999
Wiphak Chintana | Choetsak Liulaksananiyanawin
In May 1992, seeding of Rhizophora apiculata and R. mucronata were planted in mud flat area, Khung Krabaen Bay, Chanthaburi (12 34 N, 101 65 E). The spacing of 0.5x0.5 m and 1x1 m were applied for both species. Soil properties, survival rates and growth performances of seedings were investigated in August 12, 1995. It was found that the mud flat comprised 56.08 percent of soil particle with size less than 212 um. Average dissolved oxygen (DO), electrical conductivity (EC), NaCl, and pH of the soil at 5 depth were 0.69 mg/l, 0.42 s/m, 0.21 percent, and 8.07 respectively. The values slightly changed at 30 cm depth where average DO, EC, NaCl, and pH of the soil were 1.97 mg/l 0.46 s/m, 0.24 percent, and 8.25 respectively. Values of survival rate, diameter at 30 cm above ground (Do3) and total height (Ht) of R. mucronata in both spacing were remarkable greater than those of R. apiculata. In addition, survival rate and height of R. apiculata in spacing 0.5x0.5 m were remarkable grater than that in spacing 1x1 m, whereas diameters at 30 cm above ground. In both spacing showed no different. Growth of R. mucronata performed without any remarkable influencing from the spacing but the spacing the higher the survival rate was observed.
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