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Vegetable Gardening: Solarizing the soil?

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Forum: Vegetable GardeningReplies: 4, Views: 57
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nancynursez637
Madras, OR

April 9, 2013
10:31 AM

Post #9477559

In Israel it is apparently a common practice to seal planting beds in clear plastic about 6 weeks before planting. This sprouts weed seeds, destroys insects, (wonder about beneficials) and warms the soil for better seed germination. Have any of you tried this?
thanks

NicoleC

NicoleC
Madison, AL
(Zone 7b)

April 9, 2013
10:50 AM

Post #9477584

I've tried it. Yes, it kills the beneficial insects and soil microorganisms, too. While it killed a lot of weeds, it didn't kill the deep rooted grasses like bermuda, so I ended up worse off than I started. And most of my insect pests can fly, so there's no getting rid of them so easily.

This might be one of those things that works in some places but not other.
tropicalnut777
Provo, UT
(Zone 5a)

April 9, 2013
8:00 PM

Post #9478256

i use clear plastic in couple areas of my backyard..
i dont like to use herbicides/pesticides
the tougher weeds dont die..but creeping grass does.. and i just
turn it under to rot..good for the soil..
terri_emory
Alba, TX
(Zone 8a)

April 11, 2013
7:31 AM

Post #9479877

I've tried it with the same mixed results as above. I've found that lasagna garden beds work just as well without killing off the benies.
MaypopLaurel
Cleveland,GA/Atlanta, GA
(Zone 7b)

April 13, 2013
4:26 PM

Post #9482836

To my knowledge it is not common practice to solarize soil in Israel. Israel is a huge agrochemical user, producer and exporter. That said, they are always looking for new and better farming methods. Soil solarization is heavily practiced in South Florida as well as Israel. I grew up in S. FL and am familiar with farm practices there. Also have many friends who have worked farm kibbutzem in Israel. The main reason Israeli farms solarize is to kill soil pathogens, not weeds or bugs. In Florida they reduce nematode populations on sandy farm land with solarization. The process is more complicated than throwing plastic over soil. The soil is mulched, watered and then solarized. To kill weeds and weed seedlings effectively using plastic mulch you should use black mulch to block light. Many weed seeds can survive extreme heat but nothing can grow without light.

This message was edited Apr 13, 2013 6:32 PM

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