Aggregate Hydroponics (Agroponics)

Aggregate Hydroponics (Agroponics)

In aggregate hydroponic systems, a solid, inert medium provides support for the plants. As in liquid systems, the nutrient solution is delivered directly to the plant roots. Agroponic systems may be either open or closed, depending on whether surplus amounts of the solution are to be recovered and reused. Open systems do not recycle the nutrient solutions; closed systems do.

In most open hydroponic systems, excess nutrient solution is recovered; however the surplus is not recycled to the plants, but is disposed of in evaporation ponds or used to irrigate adjacent landscape plantings or wind breaks. Because the nutrient solutions are not recycled, such open systems are less sensitive to the composition of the medium used or to the salinity of the water. These factors have generated experiments with a wide range of growing media and the development of more cost-efficient designs for containing them.

There are numerous types of media used in Agroponic systems. They include coconut coir, perlite, or a combination of both. Other media such as peat, vermiculite, rockwool,  sand, sawdust, are also common.

For growing row crops such as tomato, cucumber, and pepper, the two most popular artificial growing media are coconut coir and perlite. Both of these media can be used in either closed or open systems (gravel is not recommended as an aggregate in either system). Both media are lightweight when dry, easily handled and easier to steam-sterilize than many other types of aggregate materials. Both can be incorporated as a soil amendment after crops have been grown in it.

Hydroponic Nutrients

Fertilizer vs. Hydroponic Nutrients In order to begin a discussion on hydroponic nutrients, it’s important to first distinguish the difference between the terms fertilizer and hydroponic nutrient. Fertilizer is intended to feed the microorganisms in the soil, such as beneficial bacteria and fungi.  All of the living components in the soil must READ MORE Hydroponics, Nutrients Related Article

EC vs TDS

A quick answer to why we should use EC instead of TDS The debate over EC and TDS has been an ongoing issue for a long time. These two measurements are used to determine the strength of hydroponic solution. Although they are widely used they should only be used as a READ MORE Hydroponics, Nutrients Related Article

Organic Does Not Mean “No Pesticides”

Many people believe that organic produce does not contain pesticides, which is a common misconception.  In order to become certified organic, 95% of the chemicals a farm uses must be certified organic.  This means that 5% of the pesticides, fertilizer, or herbicides may be synthetic!  Organic farmers can use as READ MORE Hydroponics Related Article

How Plants Uptake Nutrients

Nutrients play an important role in many plant processes. Nitrogen, for example, is a component of both amino acids (the building blocks of protein) and chlorophyll (the green pigment present in all plants). Phosphorous is essential to the formation of a plant’s DNA and RNA, and potassium is crucial to READ MORE Hydroponics, Nutrients Related Article

What is Aquaponics

Welcome back!  Let’s keep discussing the different categories of hydroponics.  If you haven’t read our Foundation of Hydroponics article, check it out first, then meet back here.  Just to recap, the first category that is used to classify hydroponic systems is called the Class of Hydroponics, and it describes how READ MORE Hydroponics Related Article

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    thank you :)

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