Viewing post #1133470 by joseph

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Imagejoseph
Apr 15, 2015 11:13 AM CST
Name: Joseph
Cache Valley Great Basin
Landrace: locally-adapted diversity

Star: I'm expecting snow from time to time until the last week of May. I had frost in the third week of June the past two growing seasons. I haven't even started tomatoes for myself yet. I started some for the farmer's market, but there are a lot of micro-climates around here due to the mountains, and elevation changes, so some of the neighbors can plant warm weather crops up to 3 weeks earlier than I do. Plus a small garden can use wall-o-water or cloches for frost protection.

I let the tomatoes stay out in the snowstorm for about 5 hours. During that time 1.5 inches of snow fell on them. Air temperature was about 35F. Then I put them in the greenhouse for the snow to melt... They seemed to shrug it off. Be hard to tell for a couple days until the sun comes out and warms them up well.

The flat had been outside for about a week, with low temperatures around 35 to 38. About 1/3 of the plants had already been culled because they couldn't handle the cold...

I am basically comparing the plants to each other... If I put out a flat with a lot of genetic diversity in it, some plants will survive lower temperatures than others... If I kill every plant in the flat, or if I don't kill any, then I haven't selected for frost tolerance. The more I kill, the riskier it is that I'll lose the whole experiment. I'd like to kill about 90%, but am content with 50%. I have already identified some lines that have very little frost tolerance. And some that have a lot... Helps me to know where to focus my efforts next year.
Author of Mother Earth News Blog about Landrace Gardening: http://www.motherearthnews.com/search.aspx?tags= Lofthouse

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