Peat-vermiculite

Figure 17.5 A typical experiment with potatoes conducted at the University of Wisconsin Biotron in the 1980s and 1990s. Plants were propagated with in vitro grown nodal cuttings and planted into a peat-vermiculite (50 50) and watered to excess with a nutrient solution four times daily. The watering tubes for the pots are shown hanging from an overhead delivery line (Wheeler and Tibbitts, 1987).

Soil mixture forget the vermiculite from now on. It holds too much moisture and makes for saturated, unhealthy soil. 1 suggest the following A coarse clean sand, A perlite, A sterilized loam, and A milled peat. If this seems too light, increase loam and peat. Some sterilized organic compost, screened, may also be added for nutrition. 

D524pgg 1 Se ramps grown hydroponically or on vermiculite-peat moss... 

In some instances the best approach is to immobilize the heavy metal ions by adsorbing them onto a disposable ion exchange material such as peat [13 ]or vermiculite [14 ]. The loaded natural ion exchangers are not regenerated but... 

The plants in the container will then develop two separate root systems. The upper root system will use any hydroponic medium you wish other than lava rock, which is used on the bottom half. I recommend that you use rockwool, coconut fiber, composted bark, Oasis fiber, peat perlite, and vermiculite, or my standard suggested "soil" formula for the upper medium layer. You may use... 

Sorbents can be natural or synthetic materials. Natural sorbents are divided into organic materials, such as peat moss or wood products, and inorganic materials, such as vermiculite or clay. Sorbents are available in a loose form, which includes granules, powder, chunks, and cubes, often contained in bags, nets, or socks. ... 

Plant a one-year-old tree in late fall in a pot about 12-15 in (30-38 cm) in diameter. Put a layer of broken clay pots at the bottom for drainage and fill with equal parts compost, vermiculite, and peat moss. Place in a sheltered spot out of the prevailing wind. Increase the watering in the spring and give it liquid fertilizer. 

SPILL CLEAN-UP Absorb liquids in dry earth, sand or vermiculite, and deposit in sealed containers activated carbon or peat may also be used to absorb spills ventilate area of spill after clean-up is complete remove all ignition sources. 

Matrix-dispersed fertilisers have also been produced commercially. Expanded vermiculite, perlite, various gels, polymers and waxes have all been used as dispersing media. Granular fertilisers and soil conditioners can be produced from peat and water-soluble phosphates [36]. 

Examples Compost can be produced at home, along with compost tea. Coffee groimds can often be obtained for free fi om restaurants and eoffee houses. Some examples of soil conditioner include bonemeal, peat, coir, manme, straw, vermiculite, sulfur, lime, blood meal, chemical fertilizers and sphagmun moss. Mulches are also a form of soil conditioner, as they are used to help the soil retain moisture and nutrients so that plants remain healthy. 

For oil spill cleanup, three types of methods have been applied physical methods such as skimming and use of sorbents chemical methods such as dispersion, in-situ burning, and the use of solidifiers and biological methods or bior ediation [78], The use of a sorbent is effective and practical, although a combination of various methods has usually been employed to achieve the most effective cleanup. Oil sorbents used and studied so far can be classified into three groups inorganic minerals such as perlite and vermiculite, organic synthetic materials such as poly(propylene) and poly(urethane), and biomass such as peat moss, kenaf, straw, and wood fibers. 

---