It is a light hydroponic substrate by spinning basaltic rocks that are molt into fine fibres, which are then shaped into cubes, blocks, slabs and granular materials.
Rockwool Flexi 140mm, as well as other mineral wools or stone that are used in horticulture come from rocks which is why they are considered by many as an organic product.
It is extensively used for commercial horticulture to support the cultivation of diverse crops like melons, tomatoes, cucumbers and peppers, the herbs, strawberries and cut flowers. It is also a viable option by small hydroponic farmers who want to make the most of modern technology in the root zone.
Where Did Rockwool Originate Where Did It Come From?
The origins of rock wool as an insulation material for thermal use in the construction industry. Its light, yet highly aerated properties help to maintain heat in buildings while also being simple to work with, cut and put in.
At the close of the 1960’s, experiments were conduct in Denmark to determine the feasibility use of stone wool for a hydroponic substrate. Since then, the use of rock wool as a medium has witnessed a steady advancement and development.
It is utilise by commercial and small-scale growers too. The rock wool product has evolved into a variety of different products, each having its own advantages and uses.
In addition to the choice of various sizes of blocks, cubes and plugs to propagate, grow slabs and granulated wool are also available for the development of more long-term crops and fruiting plants.
The manner in which rock fibres are stack and the densities inside the rock wool cube determine the characteristics of the growing media , such as the capacity for holding moisture as well as the aeration or air fill porosity , and the water gradient from the top of the slab to the base of the cube, or the growing slab.
In order to alter these properties by altering these properties, rock wool products design for various applications have be offer to farmers.
One example is that a product helps maintain the root zone slightly dry and assists in preventing crops from excessively vegetative growth and another one is specifically design for extremely quick root development and growth.
Growers can choose the product of rock wool that best fits their needs or crop, their irrigation method and the environment in order to maximise the development and growth of their plant.
The Wool Of Rock And Its Gradient Of Moisture
Rock wool-based products that are standard drain easily after irrigation. They typically have the majority of the nutrient solution 15 percent air pore space, and 5% of rock wool fibres. These proportions vary slightly between different brands of rock wool and the products.
A typical slab of rock wool that is use for tomatoes or other fruiting crops, has about 9 litres of nutrients solution as soon as irrigation is complete, even though drainage holes allow for the drainage of excess solution.
One of the main features that rock wool has is that they can still draw water to grow with very low tensions of moisture within the media.
Plants can quickly extract water when the rock wool has be saturate by recent irrigation and after the slab of rock wool has risen significantly and 70%-80% of its moisture content. These levels in other media for growing would cause severe wilting to the crop.
The gradient of moisture between the top and bottom of a wool-like rock slab or cube is among the most important aspects in the final product.
At the bottom of the wool, there is a lot of moisture after irrigation, typically at media saturation levels and the top layers of the wool are in a dry state and thus have access to lots of oxygen and aeration to allow root uptake and oxygenation.
It is the gradient of moisture from the top to the lowest of that makes it a great hydroponic substrate. But at the same time, growers who aren’t conscious of this feature may fall into the trap of thinking that the wool is dry on the surface.
They can also over-irrigate their plants even though they have plenty of nutrients in the solutions that help deep into your root systems.
When properly irrigate, Kingspan Tw55 is not suppose to remain in a watery pool and totally cover all the way down as sponges.
It is crucial to ensure that rock wool be allow to drain completely to ensure that any excess solution of nutrient after application, releases the cube or slab subject to the influence of gravity. as oxygen air gets draw in to the upper layer of the rock, thereby providing fresh oxygen to in the area of root.
The Characteristics Of Rock Wool In Terms Of Irrigation
The process of irrigation for rock wool is different from other solid substrates due to how it is produce to give the perfect water content and also because it has only a small root zone to plants that can eventually grow quite big.
To this end, the majority of Rockwool Flexi Slab 140mm products should be treat with frequent, short applications of nutrient solution with only enough irrigation to allow Rock wool to attain its ‘field capacity’.
Field capacity signifies that the soil has gone through its full drain, but it is maintaining a decent amount of moisture for plant roots to reach up to the time of next watering.
The Benefits Of Wool From Rocks
The fabrication of rock wool fibres made from molten rocks and the plastic wrap around growing slabs guarantees that the product is safe and free of the seeds of weeds, pests and pathogens.
Top quality brands of rock wool as a manufactured product are also reliable in their quality and don’t break down or break down with time like most other organic growing substrates do. Rockwool:
Keeps Its Physical Properties Throughout Time, And Also With Subsequent Harvests.
Its weight is low, which makes it is easy to move and handle to a new location. Once irrigation is complete, however, it will become heavier and helps to stabilise the plant.
It is available in a variety of sizes ranging from tiny 3 to 5 cm propagation plugs, connect in sheets to allow direct sowing of crops like lettuce and seedlings of other varieties, to huge cubes of more than 10cm to facilitate more sophisticate transplants.
The substrate can be inoculate by beneficial microbes, such as Trichoderma, in similar ways to other substrates such as coco are, but more frequent use of microbial products are recommend for rocks wool as a substrate.
The majority of Rockwool Flexi 140mm 400mm products and brands that are reliable do not exert any significant influence on the EC or pH that the nutrients are that is applied. Since rock wool doesn’t provide naturally occurring nutrients, a balanced nutrients product will ensure the best growth.
Beginning With The Fabric
The propose legislative changes encourage the use of a fabric-first approach, with a focus on construction quality.
The changes that are to Approve Document L (ADL) in England serve as a step-up towards future changes to the Future Homes Standard, stating that all new structures should be build to generate 31 percent less carbon dioxide emissions than buildings buil according to Part L1A (2013).
Significant revisions to standard requirements for work on existing dwellings are also expect. The changes that are propose to ADL as part of the government’s prefer choice, using a ‘fabric plus tech approach, will focus on heating systems as well as the fabric of a building.
The idea born of the need to bridge the gap between plan and buil performance, a second modification in Tradeline steel angle 25mm will be a greater examination of the build’s quality knauf performance plus.
Although this documentation in visual form can assist local authorities to push higher standards, performance issues are usually in areas that cannot be observe, which is why we require greater monitoring of building’s quality and, particularly, correctly install insulation to ensure the necessary performance.