**1. Introduction**

Indonesia is one of several countries in the world that has abundant diversity. Geographically, Indonesia is located between two continents, namely Asia and Australia. This strategic geographical location is one of the factors so that Indonesia becomes one of the centers of diversity in the world and is known as a mega biodiversity country [1]. Each region grows moss with different types. Research on mosses in forest areas has been carried out by Putri et al. [2], in Waterfalls by Cut Raihan et al. [1], in watersheds by Jumiati [3], the Leuser ecosystem area by Zahara [4], and in the UGM campus environment by Sujatmiko and Vitara [5].

The moss is very useful for the preservation of nature both in forests, mountains, waterfalls, campus environments, and the environment around us. But, the moss can also be detrimental if it grows in the same place as the plants we are cultivating. For example, moss grows in hydroponics.

In hydroponic planting systems, moss is often seen. If you do not do prevention and care, the growth of moss will be more and more fertile. How not, all the things that moss needs to grow and develop are in a hydroponic system, such as water that is rich in nutrients, oxygen and sufficient sunlight for its growth.

Horticulture is one source of human nutrition to meet the needs of vitamins and minerals as well as fiber. Horticulture consists of various vegetables such as mustard greens, spinach, chaise. Vegetables are used to complement the daily diet. Growing horticulture in the ground requires a large area of land and a larger workforce and the results are often unsatisfactory due to pests and diseases. Therefore, there was an innovation in vegetable production using hydroponics.

Hydroponic technology has many advantages compared to traditional farming, namely environmentally friendly, hygienically produced products, faster plant growth, maintained vegetable quality, increased quantity, and healthier because it is free from soil pollution, both by heavy metals and plastic waste.

## **2. The hydraulic media of vegetable plants**

Increasing vegetable production needs to be supported by various efforts, one of which is extensification with increasing use of non-agricultural land and agricultural intensification [6].

Hydroponics is a way of cultivating plants by utilizing water without using soil as a planting medium, so hydroponics is very important in meeting plant nutrients. In the hydroponic method, the function of the soil replacement medium is to support the plant and the most important thing is water which functions to dissolve nutrients that will be absorbed by plant roots.

Hydroponics requires less water and is more efficient than plants with soil media (conventional), so it is very good if applied to areas that have a limited water supply. This system does not require a large area of land, it is enough to use the yard of the house or narrow places in urban areas.

Rockwool or often also called mineral wool is an inorganic material made by blowing air or steam into melted rock. The result of this method is a type of fiber that has cavities with diameters between 6 and 10 micrometers. Rockwool can hold water and air in good amounts to support the development of plant roots [7].

Another advantage of planting with the hydroponic method is:


*The Effect of Mosses on the Hydraulic Media of Vegetable Plants in Cirebon, West Java, Indonesia DOI: http://dx.doi.org/10.5772/intechopen.100000*
