Hi guys.
Today I are going to talk about the most important thing before starting a cherry plantation, which is the choice of rootstock.
Be very careful, since the rootstock protects us from soil problems, and not from fungal diseases or other problems that cherry trees may have, which we will talk about later if you are interested.
It is obvious that all of you know what a rootstock is for, which is neither more nor less than to adapt the variety that we want to put in our orchard to our soil conditions, so as not to have problems afterwards.
As I said in a previous message there are 4 important factors, which we have to take into account, in the choice of rootstock for cherry trees, depending on the soil conditions.
These four factors :
- Rootstock with poor adaptability to land with high Ph (as is my case).
The rootstock in conditions of high pH of the soil, does not assimilate nutrients well, such as iron, phosphorus, manganese, boron, copper and zinc.
So you will have a cherry tree with nutritional deficiencies, which will always be in danger and may even die.
look at these images:
These are varieties of cherry trees bought in Italian nurseries grafted on rootstocks not suitable for my land and end up in these conditions.
It must be said that I know in advance what is going to happen to them, but what interests me are the cuttings for grafting these cherry trees, to graft them onto suitable rootstocks for my land.
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Rootstock with poor adaptability to heavy (clay) soils, the same as in flooded soils, root suffocation occurs, and there may be root rot problems
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Rootstock with poor adaptability to very humid or even flooded soils (a very common problem in the northern states), you know what happens, root suffocation is generated, root rot caused by Phytophthora and sooner or later, death of the tree .
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Rootstock with high susceptibility to beetles and other insects wood borers (the Santa Lucia “Prunus Mahaleb” rootstock is pure ragweed for wood borers ).
It is very curious, but we could describe Spain as very similar to the United States regarding soil problems depending on the geographical situation, since I consider that the southern states are more prone to problems of high soil pH and clayey and heavy soils, while that the northern states of the United States have a significant problem with wet or waterlogged soils.
Let’s start with the problems of high Ph soils .
Let’s start by saying that it is quite difficult for a standard cherry rootstock to adapt well to difficult soil conditions “this is a fact”, and we can compare cherry rootstocks with elegant suits, a suit is not the same. standard clothing, than a suit made to measure by a tailor (it’s that simple), so depending on our soil conditions, we must “manufacture” our rootstocks suitable for cherry trees.
In this sense , experience counts a lot in our favor , since almost everyone normally grows stone fruit ( nectarine peach , almond , plum , or apricot ) .
If we observe that, for example, our peach trees do not suffer from any soil problem, the trees develop vigorously, do not suffer from nutritional deficiencies, etc…, the rootstock of these peach trees would be adequate for our cherry trees, to give an example the Lowell rootstock ( is just an example ) .
Lowell is not graft compatible with cherry trees , but that is not a problem and we will talk later about how to make it compatible with cherry trees .
We will see the different types of land, for a correct choice of rootstock
- Soils with a very high Ph , but well drained .
In Europe for this type of soil there are two types of rootstocks that work very well and both are hybrids of almond x peach tree:
- GF-677 (tolerates soils with a Ph higher than GxN 15 Garnem)
In the United States you also have hybrids of both almond x peach tree and plum x peach tree, but in the case at hand, which are well-drained soils, but with a very high ph, without a doubt the most suitable rootstock is Titan
-Titan
As there are comparative studies carried out in Spain, you can see that both GF-677 and Titan support extremely limestone soils with very high Ph levels.
look at this photograph
Therefore, for well-drained soils, but with a very high Ph, Titan will be the best rootstock for our cherry trees.
Let’s go with the second and third problem , heavy soils (clayey soils), and humid soils.
Both types of soil generate the same problem, which is root suffocation, and we are going to see the most interesting rootstocks for these problems.
- Myrabolan 29-C
It is a rootstock that is present in all our orchards and is the most used for grafting plums, pluots and some varieties of apricots. It has excellent resistance to humid soils (not flooded ) , and medium resistance to heavy soils.
https://fps.ucdavis.edu/treedetails.cfm?v=1027
- Mariana 2624
In Spain it is a tremendously used rootstock as an underground part of the rootstock for cherry Marylan (lower part is Mariana 2624, and Adara plum bridge graft to make it compatible with cherry), it is better than Myrabolan 29-C, since it adapts well to humid soils ( not flooded ), and heavy soils (clay soils)
https://fps.ucdavis.edu/treedetails.cfm?v=939
- Colt
Another of the rootstocks widely used in Spain , but quite replaced by Marylan , it resists well humid soils ( not flooded ) , and heavy soils , but it is very sensitive to drought .
https://fps.ucdavis.edu/treedetails.cfm?v=3468
We are going with a problem that the northern states of the United States usually have.
Land with high risk of flooding:
This is really screwed up, and there are only two rootstocks that resist waterlogging for prolonged periods, both Spanish (one selected from the Pollizo plum variety from the Murcia region and another plum x almond hybrid).
- Adesoto-101 Puebla De Soto
Selection of Murcian pollizo plum.
It is this variety:
hortsci-article-p1314.pdf (46.8 KB)
It is a true Abrams Tank , which can with everything .
It is resistant to flooded land for long periods of time, resistant to heavy soils, resistant to limestone soils with high Ph, resistant to nematodes, resistant to phytophthora, and other root fungal diseases…hahahahahaha .
A picture is worth a thousand words ( this photograph is very famous , because I use it a lot to show the resistance to waterlogging of the Adesoto rootstock )
Photograph of my friend Peret’s peach orchard, in the Ebro river delta, which floods every year for several months, as you can see.
And the trees are happy on the Adesoto rootstock hahahahaha.
I know that Adesoto 101 Puebla de Soto is not available in the United States, and this worries me, but the second Abrams tank is available in North American nurseries hahahahaha.
The jewel in the crown of the Spanish company Agromillora Iberica
-Rootpack-R
https://www.agromillora.com/es/rootpac-r/
It is tremendously resistant also to flooding
And it’s for sale at Burchell Nursery
And now to finish, let’s go with the last problem.
Rootstock resistant to woodminer larvae.
In Spain there is a beetle that is very harmful (Capnodis Tenebrionis), surely there is also a presence in the United States of this beetle, but I know that there are many other beetles in the Unites Estates , that lay their eggs near the roots, the larvae ascend through the roots to the inside the tree, drilling into the wood and killing the fruit tree.
The chemical fight is ineffective, since it has to be treated with systemic insecticides that are increasingly restricted by the authorities of our different countries.
There is only one totally effective method of fighting, and that is the use of bitter almond tree as a rootstock.
The bitter almond tree has several unpleasant and even deadly substances for the larvaes wood miners.
I have not seen bitter almond in American nurseries, but it should not be hard to come by and it makes a wonderful rootstock in non-irrigated areas for growing cherries.
Obviously , all the rootstocks mentioned in this post are not graft compatible with cherry trees ( except for the Colt rootstock ) , so it is necessary to make them compatible by intermediary grafting of Adara plum or Monrepos plum .
So far we have talked about rootstocks.
In the following message, we will talk about intermediary grafts, to make rootstocks compatible with cherry trees
Regards
Jose