Content of Ammonia Water On Cultivation

Ammonia in water can come from fertilizers, animal excretion and results overhaul of nitrogen by microbial components. Some plants can absorb ammonia. Decomposers (nitrobacter) can oxidize ammonia into nitrate. Therefore, ammonia can be decreased concentration in various ways. However, with a high density of fish pond and artificial feeding can increase the concentration of ammonia. Ammonia is highly toxic when ...

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Definition Fish Disease

The fish is said to be ill when an abnormality both anatomically and physiologically. Anatomically occur deformity of body parts of fish as part of the body, head, tail, fins and belly. In physiological abnormalities in organ function of vision, breathing, digestion, blood circulation and others. Disease by spreading classified as follows; 1) Endemic disease outbreaks ie fish / shrimp ...

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Effect of Worm In Soil Fertility

Some physical soil properties terbenahi by earthworm activity is (1) the formation of macropores result of the formation of worm burrows, (2) the creation of soil crumb structure, (3) decrease in soil bulk density, and (4) increasing the shelf life of the water. The formation of an earthworm burrows macro pores lead to the creation of sustainable and stable. These ...

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Sampling Technique

Some things to consider in taking the sample are: 1) Fixation Fixation is the process of sample preservation using preservatives that material taken can be processed by PCR. The principle of choosing the type of preservative: a) easy in the handling, storage and transport, b) Not reduce the sensitivity of diagnosis, c) Easily available and relatively inexpensive. There are two ...

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Shrimp Virus Diseases

A. HPV virus disease (Hepatopancreatic parvovirus) and MBV (Monodon Baculovirus) In the year 1988-1990 is a disease highly lethal to tiger prawn shrimp that can cause slow growth. Organs are attacked is hepatopancreas. On a serious attack, hepatopancreas will look pale, shrunken and compact. B. Viral disease YHD (Yellow Head Disease) Symptoms of this disease include: a) The head is ...

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Effect Of Water Alkalinity On Cultivation

To maintain the pH of the water to remain stable at around 6.8 it is necessary a chemical process that is expressed in alkalinity. Alkalinity is the ability estab-bufffer late of bicarbonate ions, carbonate and hydroxide ions in water. The third ion in the water will react with the hydrogen ions so as to reduce acidity or pH increase. Alkalinity ...

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