Aeroponic System

A hydroponic system where plants are suspended in the air and their roots are directly misted with a nutrient-rich water solution. Aeroponic systems can be an excellent option for those looking for a space-saving technique since they require less equipment and less space than other hydroponic systems.

Nutrients

The nutrients supplied to plants in a hydroponic system are typically either naturally occurring minerals or synthetic substances that provide the basic elements necessary for healthy growth. Nutrients can include nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, manganese, and zinc.

Nutrient Film

A hydroponic system where plants are placed in tubes and a continuous flow of nutrient-rich water is pumped along the length of the tube. This allows the roots to be constantly bathed in the solution while providing oxygenation at the same time.

Nutrient deficiencies

Nutrient deficiencies occur when an organism, such as a plant or animal, is not receiving enough of one or more essential nutrients required for proper growth and development. Essential nutrients include macronutrients like nitrogen, phosphorus, and potassium, as well as micronutrients like iron, zinc, and magnesium. When a deficiency occurs, the organism may exhibit various symptoms such as stunted growth, yellowing or browning of leaves, reduced fruit or flower production, or even death in severe cases.

Nutrient burn

Nutrient burn is a problem that occurs when plants are over-fertilized, leading to an excess of nutrients in the soil. This can cause damage to the plant’s roots and leaves, resulting in symptoms such as yellowing or browning of the leaves, leaf curling, and even death if left untreated.

Deep Water Culture (DWC)

A method of hydroponic gardening where the roots of plants are suspended in a nutrient-rich solution and oxygenated by an air pump or airstone. This system is often used for larger plants, such as tomatoes, peppers and cucumbers.

Grow Medium

The substance used to support the root system of a hydroponically grown plant. Common grow media include gravel, perlite and clay pellets.

pH

The measure of acidity or alkalinity of a liquid solution. A pH level that is too high or too low can cause nutrient deficiencies in plants grown hydroponically. Most plants thrive best when the pH of their nutrient solution is between 5.5 and 6.5.

Drip System

A type of hydroponic system where nutrient-rich water is delivered to plants via small holes or emitters in the grow media. This type of system is especially useful for larger systems, as it ensures that each plant receives an even distribution of nutrients.

Wick System

A type of hydroponic system where the nutrient-rich solution is drawn up through a wick into the grow medium. This type of setup can be beneficial for plants that have shallow root systems, such as lettuce and herbs.

Reservoir

The container used to store the nutrient solution used in a hydroponic system.

Companion Plants

Companion plants are plants that are planted together and will benefit each other in some way. This can be through improved growth rates, natural pest control, better nutrient absorption, and even enhancing flavor.

Allelochemicals

Allelochemicals are natural compounds produced by plants that have an effect on the growth, survival, and reproduction of other plant species. These chemicals can be released into the environment through root exudates, leaf litter, or volatilization from plant tissues. Allelochemicals can have both positive and negative effects on neighboring plants, depending on the concentration and type of chemical involved. Some allelochemicals can promote growth and development in nearby plants, while others may inhibit germination or stunt growth. The study of allelopathy involves understanding these interactions between different plant species and the chemicals they produce.

ppm (Parts Per Millions)

In hydroponics, PPM (parts per million) is a unit of measurement used to express the concentration of nutrients in the nutrient solution that is used to feed plants. The nutrient solution is typically made by dissolving fertilizers in water, and PPM is used to measure the concentration of these dissolved nutrients.

EC (Electrical Conductivity)

EC, or electrical conductivity, is a measurement of the ability of a solution to conduct an electric current. In hydroponics, EC is used to determine the concentration of nutrients in the nutrient solution. When dissolved in water, nutrients create ions that conduct electricity, and the higher the concentration of these ions, the higher the electrical conductivity of the solution. By measuring EC levels regularly using a meter, hydroponic growers can ensure that their plants are receiving appropriate levels of nutrients for optimal growth and yield. However, it’s important to note that different plant species have varying nutrient requirements and tolerance levels for EC levels, so these should be considered when adjusting nutrient solutions. Additionally, factors such as temperature and pH can also affect electrical conductivity readings, so these should be monitored alongside EC levels for best results.

pH

pH is a measure of the acidity or alkalinity of a solution. It is expressed on a scale of 0-14, with 7 being neutral. A pH value below 7 indicates acidity, while values above 7 indicate alkalinity. Maintaining a proper pH level is crucial for ensuring that plants can absorb nutrients effectively. The optimal pH range for most hydroponic crops is between 5.5 and 6.5, although some plants may have specific requirements outside of this range. Regular monitoring and adjustment of pH levels is important for achieving healthy plant growth in hydroponic systems.

Photosynthesis

Photosynthesis in hydroponics refers to the process by which plants use light energy to convert carbon dioxide and water into glucose and oxygen. In hydroponic systems, this process occurs within the plant’s leaves using nutrients supplied through a nutrient solution. Hydroponic growers can manipulate various environmental factors, such as light intensity, duration, and spectrum, to optimize photosynthesis for maximum plant growth and yield.