What should be the optimum soil pH for shrimp culture?
It should be above 6. However, farmers should check the water pH and try to maintain it in the range of 7.5-8.5 by using lime, because it is difficult to completely rectify the soil pH problems. 28. It is very difficult for us to discard the sludge away from the pond site as in our village all the area is filled with ponds, with out leaving much free space. Where to discard the sludge and is there any other option to reduce the sludge in the pond? Most preferred practice is to discard the sludge away from the pond site. If the black soil is disposed off on the bunds of the pond then it may seep back to the pond during rain and again create a bad pond bottom condition. Sludge may be disposed off in a trench dug along the bund so that it does not seep back in to the pond, which is better than not removing it at all. In case it cannot be removed, ploughing several times on wet soil can reduce the organic matter, which will be a more time consuming activity.
