|
Parameters |
Lablab |
Filamentous algae |
Plankton |
|
Composition |
benthic community of cyanobacteria, diatoms, and associated
invertebrates |
mostly of species of Chaetomorpha, and also of Cladophora and
Enteromorpha |
consists of numerous species of microscopic diatoms, algae,
and zooplankton |
|
Preferred environment |
shallow water, high salinity, intense sunlight; requires
clayey or loamy bottom with at least 4% organic matter |
low salinity (usually during the rainy months) in shallow to
moderately deep ponds; grows on wide variety of soil types |
high or low salinity, in shallow or deep ponds; difficult to
establish in calcareous/alkaline soils |
|
Growing period |
2-6 weeks |
2-3 weeks |
1-2 weeks |
|
Advantages in propagating |
produces high and consistent yields for milkfish (up to 550
kg/ha net biomass yield) |
can be propagated with planting material from other ponds;
does not require manure application; fish taste and texture reportedly
better |
produces highest yield for tilapia especially when combined
with manuring; can be seeded from other ponds |
|
Concerns and limitations in propagating |
may require 30-40 days to grow; rain kills floating mats
causing them to sink, rot, and pollute the water; strong wind also forces
floating mats to the pond bank |
biomass yield generally low; undesirable fibrous species may
dominate under high salinity; too thick growth consumes space and can trap small
fish |
yields unreliable in milkfish ponds; blooms can collapse
resulting in fish kills; species causing off-flavor may dominate especially in
fresh water |
