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Biological soil serves as a habitat for organisms that participate actively in the provision of nutrient and growth boosters substances (additives) for plants, which are integrated capable of sustaining the productivity of the land to produce biomass and production of food crops, medicines, industrial estates, forestry and so on other. As a growing medium, the soil has four main functions, ...

Chemical parameters of the water can not only be measured using digital equipment, but there is also a water quality measurement method using titration methods or staining. Here below is the equipment used in the measurement of water quality parameters by titration can be seen in Table 17. Table 18. Equipment used for the measurement of water quality by titration

Alkalinity is a total concentration of alkaline elements contained in water and commonly expressed in mg / liter or the equivalent of calcium carbonate (CaCO3). It is said that the alkalinity in freshwater very important role because alkalinity is not only a direct effect on the growth of plankton, but also affects other parameters. Alkalinity is the capacity of water ...

For water quality monitoring, sampling time interval is set on a different day and time, so it can be differences in the quality of water every day and every hour. For example, if the first sampling is done on Monday at 06.00, then the sampling is then performed on Tuesday at 07.00, etc. Frequency of sampling The frequency of sampling ...

One way to measure water transparency is done by using pieces Secchi (Secchi disk), which is a round pieces with a diameter of 20 cm made of zinc and painted white or black-white weighted. The tool is lowered into the water until it looks, its depth was measured, then lowered deeper. Furthermore, the chip is removed and when the puck ...

The productivity of agricultural land is an economic concept that is determined by three factors, namely: (1) land management system, (2) results (of production), and (3) the type of soil. The value of agricultural land is highly dependent on the value of land productivity, more productive, then the higher the value of agricultural land. In the management of farmland there ...