Wednesday, August 1, 2012

What Vegetable Farmers' Dread - Late Blight

Black Krim tomatoes  in the field with signs of Late Blight
Ah,  my tomatoes are loaded on the vine.  I happily walk down the rows counting the bounty, dreaming of canning, and eating fresh tomato sauce.  I actually long for the sign of eating too many tomatoes - canker sores in my mouth.  I love eating and cooking with fresh tomatoes.  Alas, just as some are starting ripen and what do I see but brown crispy leaves near the bottom of the plant.  (I have been trellising the tomatoes and often I break a branch or two and the leafhopper with it's hopperburn has affected so many crops.)  However, our farm manager, Matt, points it out and says that he thinks it is Late Blight.  As he says it, I know.  I have seen it before.  Brown on the stems and leaves, that moves up the plant and onto the fruit.  Not all the plants have it just a section of the 450 plants.  Although if I do not get the affected plants out of the field, it will spread throughout and beyond.
Fruit removed and plants to be put out with the trash
This cloudy, moist, humid weather is conducive to the fungus spreading.  My spraying of copper helped in that the whole field is not affected.

So, instead of harvesting ripe, luscious tomatoes, I am pulling the green fruit off and stuffing the plant into contractor- garbage bags to put in the trash at home.  Also, I remove the stakes and twine and set the pile aside to bring to the house for burning.  This is the last thing, I had hoped to be doing.  Thus far, I have removed 52 plants. 
What the rows look like on August 1
What does this mean for my CSA shareholders?  ...Sadly, less tomatoes and less variety.  I was growing Pink Beauty, San Marzano and the heirlooms of a Rose Brandywine, Black Krim, Red Pear Piriform, orange-colored Nepal and Cherokee Purple.  As a backup, I grew one variety of 36 plants that is Late-Blight-resistant and the cherry tomatoes may have some resistance.   We shall see.

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