On different soils affect plant: Garden Soil - Naturally Sterilizing Garden SoilsBy Steve Boulden Most garden soils and especially organically created garden soil will never need the extremity of sterilization. However, in some instances such as nematode infestation, it may be desirable to completely sterilize the soil. The major drawback to this, whether naturally or chemically, is that it also kills beneficial soil organisms. However, depending on certain circumstances, it may be necessary. It’s almost impossible to eliminate all weeds seeds, diseases, nematodes, and insects. And especially organically or naturally. However, it is possible to cut the population of most to just a few simply by using the heat of the sun in the hottest part of Summer. That is, in most climates. I’ll explain more on that later. In the hottest part of Summer, usually August or July, it’s possible to raise soil temperatures over four inches deep to above 120 degrees using clear plastic sheeting. Simply till or spade manure into the surface soil as deep as you can get it. The manure will help to generate heat. Next, moisten the area and cover with clear plastic sheeting. Keep the sheeting on the ground and make sure ______continued. Interesting article on different soils affect plant: The Absence Of Soil Temperature And Water All Important Factors In A Hydroponic System In cooler climates where even Summer temperature don’t get very high, it’s possible that this method will actually help germinate some seeds and multiply unwanted soil diseases. It basically creates a cozy greenhouse atmosphere with good temperatures for germination. On a smaller scale, you can have better success and possibly eliminate all unwanted diseases, weeds, nematodes, and insects. Placing soil in black pots, moistening, and covering tightly with clear plastic will produce soil temperatures in excess of 150-160 degrees. Keep covered for two weeks and make sure it stays moist. Not much can live in that. Again, keep in mind that this also kills beneficial soil organisms. However, the tradeoff may be necessary. And you can rebuild the structure of the soil over time by adding lots of organics to the soil. Article by Steve Boulden. Steve is the creator of The Landscape Design Site which offers free landscaping advice, tips, plans, and ideas to do it yourselfers and homeowners. For more landscaping ideas, visit his site at: www.the-landscape-design-site.com. Another decent article on different soils affect plant: How To Set Up A Mittleider Method Soil-bed Garden Off-site
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