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The NFT hydroponic system is a popular hydroponic cultivation methodology characterized by the constant flow of a nutrient solution over the plant roots. Several types of NFT hydroponics serve particular growing objectives and contexts.
Traditional NFT Channels
This method uses angled rectangular channels, typically made of PVC, aluminum, or food-grade plastic, to cultivate plants. The channels allow a thin film of nutrient-rich water to flow over the roots of the plants, providing them with both nourishment and oxygen.
Deep Flow Technique (DFT)
It is also known as the pond system, the Deep Flow NFT system employs a larger channel or container in which a greater volume of nutrient solution is circulated. The increased depth of the solution allows for the cultivation of larger plants with more extensive root systems.
Modular Systems
Modular systems consist of independent growing units that can be easily assembled, disassembled, or expanded according to the producer's needs. Each modular unit functions similarly to traditional NFT systems, allowing for the cultivation of various crops in separate modules.
Roof Gutter NFT Systems
This kind of NFT setup utilizes roof gutters as channels for plant growth. One benefit of using roof gutters is their affordable price. Another benefit is the simplicity of constructing a functional NFT system by utilizing readily available materials.
The versatility of the NFT hydroponic system appeals to different growers. It is suitable for commercial ventures, research and education, home gardening, vertical farming, and urban agriculture.
Commercial greenhouses and vertical farms
Growing leafy greens, herbs, and microgreens at scale is possible. High-density planting and rapid crop cycling leads to increased productivity. Automated nutrient delivery makes it economical to meet large market demands.
Research and Education
Universities, agricultural schools, and extension services use NFT systems to study plant biology and the effects of different environmental conditions. The precise control of the NFT system allows growers to study plant growth, nutrient uptake, and anatomy to better understand hydroponics. It also allows scientists to investigate how specific environmental elements influence plant development, anatomy, and nutrient uptake. Knowledge gained can help enhance hydroponic practices.
Home gardening and small-scale urban farming
Urban dwellers can grow their own fresh vegetables in small indoor spaces using NFT systems. Compact vertical setups give everyone access to fresh food. The small-scale, low-cost designs of the NFT systems suit beginners and hobby gardeners alike.
Indoor and outdoor urban agriculture
The adaptability of NFT systems makes them suitable for rooftops and community gardens in cities. Limited space won’t hinder urban residents from gardening.
Agricultural extensions and smallholder farms
Even those with limited land access and poor soil quality can benefit from using an NFT system to grow crops. It provides an attainable method of producing food locally to enhance food security and reduce dependence on external supply lines.
When selecting the proper NFT hydroponic system, several factors must be considered:
Scale and Space:
Depending on their growing capacity and available area, buyers should determine the scale and space. Selecting systems that suitably fit the space and can fulfill the targeted output is necessary.
Crop Types:
The chosen hydroponic system should be appropriate for the crop types. For instance, particular NFT system designs may better suit leafy green vegetation, herbs, or other crops.
Materials and Durability:
Consider the materials used in the NFT system, such as food-grade plastic or PVC, as well as their durability. Select systems made of long-lasting materials that can withstand prolonged use.
Ease of Assembly and Maintenance:
Choose hydroponic NFT kits that are easy to set up, have clear instructions, and require minimal maintenance. Consider systems that offer user-friendly components and design.
Cost and Budget:
Consider the cost and budget of the chosen NFT system. Compare different options, focusing on quality, features, and performance, to select a system that aligns with budgeting requirements.
Q1: What happens if the NFT plant's root zone is deprived of oxygen?
A1: The root zone must be kept dry to give the roots the needed oxygen. If the root zone is deprived of oxygen, the plants will die. This is because the plants need oxygen to survive.
Q2: Can the nutrients in the NFT hydroponic system be reused?
A2: Yes, the nutrients in the NFT hydroponic system can be reused. This is because there is little to no evaporation of the nutrient solution. When the excess nutrient solution drips back into the reservoir, it can be reused.
Q3: How often should the nutrient solution be changed in an NFT hydroponic system?
A3: The nutrient solution in an NFT hydroponic system should be changed every two to four weeks.
Q4: What are some limitations of the NFT hydroponic system?
A4: Some limitations of the NFT hydroponic system are that it requires a constant flow of water and nutrients and it is susceptible to high-temperature fluctuations.
Q5: Can all plants be grown using the NFT hydroponic system?
A5: No, not all plants can be grown using the NFT hydroponic system. This is because the NFT hydroponic system needs fast-growing herbaceous plants. Those should have not-too-large root systems. Normally, only lettuce, basil, and other herbs are suitable for this system.