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Strawberries and Caneberries
University of California Agriculture and Natural Resources Agriculture and Natural Resources Blogs
SAT, JUN 25 2022
by mahmoud diab
on December 10, 2013 at 10:47 AM
please i need more info regarding strawberry fruit good shelf life.and calcium fertilizer.
by Mark Bolda
on December 12, 2013 at 8:44 AM
Hi Mahmoud,  
I don't have good empirical evidence that applied calcium results in longer shelf life in strawberries, so I can't help you there I am afraid. My recommendation to growers seeking better shelf life has always been the same: pick with damaging the fruit, cool the fruit as soon as possible, and make sure that your plant is as healthy as can be.
by maheshgowda, b. m.
on December 16, 2015 at 1:48 AM
sir i have 600 strawberry plants all plants showing same deficiency symptom, how to manage it.
by Justin Huff
on December 18, 2021 at 6:09 AM
This seems to suggest you need to lower humidity - but this study from University of AZ suggests the opposite.
by Mark Bolda
on December 18, 2021 at 9:26 AM
Hi Justin, This is interesting that you bring this up. I have participated in Dr. Kubota's short course (excellent, btw, highly recommend it) on strawberry and recall this part. It's notable that she also points out that Ca is moved up by the strawberry plant by evapotranspiration, but in the case of the greenhouse, this mass flow of water must be going too quickly to effectively be moving the calcium. Thus the need to raise the humidity to levels where guttation is seen.  
I should point out to you too, that we don't really guttation on these foggy days described in the blog, again underlining that the water is not moving - also the symptoms of Ca shortage don't really show unless it's been foggy for a while, like more than a week and a half.  
Thanks for sharing this, it's a very good point to understand.
by Mailyn
on April 20, 2022 at 4:53 PM
Thank you for sharing this, am from the Philippines and am growing a strawberry here. My plants are showing burnt like leaves even those very young leaves like shown above. Can calcium foliar help?
by Mark Bolda
on April 25, 2022 at 4:48 PM
Mailyn, you can try the calcium foliar. Sort of curious since I don't know the Philippines. What is the relative humidity in your area? Additionally, lest we forget an important point, what are the calcium levels of your soil?
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