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PostPosted: May 21st, '17, 19:27 
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We are in South Africa and its beginning of winter in Pretoria, temperatures are 8deg C to 26deg c in the days,

The tomatoes are in the gravel growbed half of an IBC cut 20/80

Tomatoes are Heirloom indeterminate Black Krim

Any suggestion as to what they are and how do one treat them?


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PostPosted: May 21st, '17, 19:29 
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Plants are very healthy and doing well, tomatoes are nice and big, bit takes a bit longer to colour than the previous lot did in the summer...I would assume is due to the colder temps now in winter


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PostPosted: May 22nd, '17, 14:10 
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Any ideas here from the old timers please


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PostPosted: May 22nd, '17, 14:44 
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There are a couple of things going on. The main one you were asking about - these are aphids. The white bits are mostly cast off skins as they grow they leave these behind. There are only a few mature aphids visible but they are there. The other thing I noticed is a caterpillar in the top photo (lower left corner - helps to zoom in on the picture). BT should take care of the caterpillar. For the aphids, there is a garlic chili spray (do a search here and it should come up) that might work and that's probably the first thing I would try.


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PostPosted: May 22nd, '17, 14:54 
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Forgot to mention that ants often farm these because of the honeydew they produce so try to eliminate the ants if they are part of the problem.


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