You have asked a lot of questions in just one post. For irrigation I would suggest using "T-tape" drip irrigation row crop tubing. It is cost effective when purchased in 5,000 foot rolls and lasts for quite a number of years. A Google search will yield information on it. For seed suppliers I will start off suggesting Twilley Seed Link For plastic and its use this web site provides some reading Link A>Link Google search for "agricultural plastic" will give you a number of suppliers. Some timely cultivation or some between the row spraying may eliminate the need for plasticulture. A plastic laying machine is just another expense as is the plastic. For everything you wanted to know about the actual growing I suggest you go to your local library and check out "Knott"s Vegetable Growers Handbook" whether a local copy or through Inter-library Loan. This should give you some reading until your eyes are about numb. Link Link Link Link Link Link Link Link Make sure you read the archived articles on this next site Link Link href="http://www.farmersmarketonline.com/Homegrow.htm">Link Link Link You may wish to plant by soil temperature. Use the Knott"s Handbook information and a temp site such as this-- ftp://ftp.oznet.ksu.edu/wdl/text/REPORT.TMP Best wishes.
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