 |
| Screening
of salt tolerant grasses under coastal ecosystem at Khoung Krabaen
Bay |
| Rungsun
Im-Erb Suthat Prosayakul and Prasit Tanprapas |
| ABSTRACT |
| Six salt tolerant grass varieties were screened under coastal ecosystem at Kung Krabaen Bay, Thamai District, Chantaburi province from 1993-1994. This growth and survival percentage were evaluated in the area where the effluent was discharged from surrounding shrimp ponds and concurrently subjected to tidal movement and occasional flooding. Salt tolerant grasses also absorb and filter some kind of nutrients and toxic substances before the effluent is discharge to seawater. This would reduce toxic substances in seawater. The experimental design was Randomized Complete Block Design with 4 replications, Sporobolus virginicus L. (coarse). Sporobolus virginicus L. ( smooth). Spartina patens Muhl. Distichlis spicata, Panicum repens Linn. And Leptocloa fusca (L) Kunth, were used the experiment. |
| The results showed that Spartina patens Muhl. Has the highest percentage of survival and growth followed by Panicum repens Linn., Sporobolus virginicus L. (coarse) and Sporobolus virginicus (smooth) in decreasing order. Panicum repens Linn. Showed higher capabability to absorb nutrients followed by Spartina patens Muhl., Sporobolus virginicus (coarse) and Sporobolus virignicus (smooth). Spartina patens Muhl gave the highest dry weight which is higher than Panicum repens Linn., Sporobolus virginicus (coarse) and Sporobolus virginicus (smooth) by 112.51, 191.10 and 143.72% respectively. Based on survival percentage and dry weight of the grass varieties, it can be concluded that Spartina patens Muhl. Is the most suitable for growing on coastal saline soils which are effected by effluent from shrimp ponds. |
| Keywords : Salt, tolerant, grass, salinity |