Help, no response to post, problem now on tomato leaves too

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emblue Morrisville, PA Aug 23, 2008

What I saw the other day on my cucumber leaves (see http://davesgarden.com/community/forums/t/893691/) is now happening on the tomato leaves -- please help -- what's going wrong?

Thanks. :)

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Les_Cooper Brazoria, TX Aug 23, 2008

Howdy EMBLUE,

Look these over and see if you can get a clue to the tomato's affliction.

F-7625 Common Diseases of Tomatoes Part I: Diseases Caused by Fungi
F-7626 Common Diseases of Tomatoes - Part II: Diseases caused by Bacteria, Viruses, and Nematodes
F-7627 Common Diseases of Tomatoes Part III: Diseases Not Caused by Pathogens


Les

Post #5458053
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Les_Cooper Brazoria, TX Aug 23, 2008

Since these links don't work, go here and scroll to the bottom.

http://www.tulsamastergardeners.org/blackbox/tomatokey.htm

Les

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emblue Morrisville, PA Aug 23, 2008

Thanks Les!

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Les_Cooper Brazoria, TX Aug 23, 2008

This one notes high nitrogen and low potassium.

Growth Cracks

Two types of growth cracks affect the stem end of tomatoes: concentric and radial. Concentric cracking produces circular cracks around the stem end of the fruit. Radial cracks spread outward from the stem scar. These cracks typically appear as the fruit matures. Growth cracks often appear when conditions drastically change the rate of growth, such as wide fluctuations in temperature and moisture. Dry weather followed by heavy rains causes radial cracking in many tomato cultivars. Cultivars vary in their ability to withstand cracking depending on the strength and "stretchability" of the skin. Very susceptible cultivars will crack while still green, those that are somewhat resistant often don’t crack until the fruit has reached the breaker stage. The earlier the fruit cracks, the deeper the cracks become. High nitrogen and low potassium are often implicated in fruit cracking and therefore, proper plant nutrition and adequate, regular irrigation will reduce the likelihood of growth cracks.

Les

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emblue Morrisville, PA Aug 23, 2008

Was that for me? I don't have growth cracks (knock wood I won't get them!) -- just the leaf problems.

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Les_Cooper Brazoria, TX Aug 23, 2008

Oh, it was meant for another thread...lol.

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