White surfaces in tomatoes - Page 2

AKmark · August 12, 2016

I agree with Bower that is the effect of K deficiency. The green core in the other photo mat not be nothing but a core, but the uneven ripening is usually K problems.

ContainerTed · August 12, 2016

I've noticed that some varieties are prone to keeping both green and white material inside them until very late in the ripening process. Up to now, I have always allowed these varieties to ripen further and this usually eliminates the white and green material. Many of the older varieties are prone to this and the old catalogs had a lot of descriptions of this or that tomato having a small core area when ripe. So, the DNA is in place for many to have this characteristic of a large or small or no "core" material evident in ripe fruit.

Some examples of varieties with more "core" material are the Dwarfs Sleeping Lady and Perth Pride. I have seen this in large indeterminate plants like "Large Red" and others. My conclusion has always been that this "core" material is present in lots of tomatoes both old and new. While I can see that a deficiency in Potassium can aggravate this condition, I don't think it is the only thing causing it.

I believe that it is also built into the DNA of some varieties, and may be the ability of the plant to take up the Potassium rather than a deficiency of Potassium in the growing medium.

Hellmanns · August 12, 2016

I know some varieties are more prone to hard white interiors than others, but I've not seen it here in decades since I have kept plenty of potassium available, along with adequate moisture.

I have seen it occur sporadically, usually in certain trusses, but only be in the last 1or 2 fruit on the truss of very heavily loaded plants. If that made sense..

August 12, 2016	#17
ContainerTed Tomatovillian™ Join Date: Jul 2008 Location: 6a - NE Tennessee Posts: 4,538	I've noticed that some varieties are prone to keeping both green and white material inside them until very late in the ripening process. Up to now, I have always allowed these varieties to ripen further and this usually eliminates the white and green material. Many of the older varieties are prone to this and the old catalogs had a lot of descriptions of this or that tomato having a small core area when ripe. So, the DNA is in place for many to have this characteristic of a large or small or no "core" material evident in ripe fruit. Some examples of varieties with more "core" material are the Dwarfs Sleeping Lady and Perth Pride. I have seen this in large indeterminate plants like "Large Red" and others. My conclusion has always been that this "core" material is present in lots of tomatoes both old and new. While I can see that a deficiency in Potassium can aggravate this condition, I don't think it is the only thing causing it. I believe that it is also built into the DNA of some varieties, and may be the ability of the plant to take up the Potassium rather than a deficiency of Potassium in the growing medium. __________________ Ted ________________________ Owner & Sole Operator Of The Muddy Bucket Farm and Tomato Ranch

August 12, 2016	#16
AKmark Tomatovillian™ Join Date: Jun 2013 Location: Wasilla Alaska Posts: 2,010	I agree with Bower that is the effect of K deficiency. The green core in the other photo mat not be nothing but a core, but the uneven ripening is usually K problems.

August 12, 2016	#18
Hellmanns Tomatovillian™ Join Date: Jul 2014 Location: kentucky Posts: 1,116	I know some varieties are more prone to hard white interiors than others, but I've not seen it here in decades since I have kept plenty of potassium available, along with adequate moisture. I have seen it occur sporadically, usually in certain trusses, but only be in the last 1or 2 fruit on the truss of very heavily loaded plants. If that made sense..