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Increased growth and precocity through multiple rootstocks

Posted by simon_grow San Diego Zone 10 (My Page) on
Wed, Nov 30, 11 at 20:43

Hey everyone, thanks to ohiojay, I've been reading up on using multiple rootstocks to greatly accelerate the growth of fruit trees. I've read many of the articles from Bernie Dizon's website but can't find any detailed information on his site regarding when, where, type of rootstock, how low/high to inarch, etc...

Bernie does post several pictures of normal trees Vs. multiple rootstock trees and the multiple rootstock trees look twice as large as the normal trees. Bernie also mentions that the trees fruit earlier and bear more fruit compared to the normal trees.

Because Mangoes grow so slow and stay relatively small here in SoCal, I decided I will grow up some seedlings and inarch them to my grafted trees. I will also grow up some Lychee seedlings next to my in-ground air layers and attempt to inarch them in 1-2 years. Lychee air layers have a notoriously shallow root system and I hope that by giving it one or more tap roots, I can overcome the slow growth caused by wind blistered leaves and poor nutrient/water uptake by the shallow roots of young air layers.

By inarching seedlings onto my Mango, Lychees and possibly other fruit trees, I hope to not only increase growth and precocity but also increase drought tolerance, decrease susceptibility to disease and perhaps prevent my trees from being blown over in strong winds.

I imagine that, especially for lychees and especially in SoCal, inarching multiple rootstocks onto air layered Lychees may greatly increase growth by allowing the tree to uptake the nutrients and water during critical times of growth. Here in SoCal, we get windy Santa Anna winds that mutilates the leaves of our lychee trees. Even when Santa Anna conditions are not present, we often have dry windy weather that dessicates the leaves of our trees. With multiple rootstocks, I hope my trees will be able to maximize growth during non windy conditions.
Simon


Follow-Up Postings:

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RE: Increased growth and precocity through multiple rootstocks

  • Posted by zands 10b Fl (My Page) on
    Wed, Nov 30, 11 at 23:44

http://www.dizonexoticfruittrees.com/tech/tech04.htm

http://www.dizonexoticfruittrees.com/tech/tech04.htm

List of exotic
fruit trees for sale (double rootstock)










DOUBLE ROOTSTOCK. About 4.5
years ago, Dr. Rodolfo C. Undan and Bernardo
Dizon
planted two grafted mango trees in a not-so-favorable area at
the Central Luzon State University. One had single rootstock while the
other had two. Today, the one with double rootstock (right being pointed
to by Dr. Undan) is virtually double in sized compared to the one with a
single rootstock being pointed by Dizon at left. In another planting in a
private farm in Bulacan, Dizon said that a four-year-old mango tree with
double rootstock has caught up with an 8-year-old grafted tree with single
rootstock. Dizon has been employing the double rootstock technique to
hasten the growth of his mother trees so he could produce more budsticks
within a shorter time. That is the same technique he had used in his
mother plants of longkong, a special variety of lanzones from Thailand

 


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RE: Increased growth and precocity through multiple rootstocks---

  • Posted by zands 10b Fl (My Page) on
    Wed, Nov 30, 11 at 23:51

The root system is the basic foundation of plants. It
consists of a primary root used for anchorage and lateral roots with hairs that
absorb water and nutrients; and oxygen for respiration.

Plant's growth depends solely on root development,
which normally takes years before attaining productive or fruiting stage. This
growth phenomenon is generally observed throughout the world especially in
temperate countries
hat have two dormant
seasons, autumn and winter. When the roots are injured or diseased, there will
be no growth. As the roots grow, corresponding growth shall also be observed on
the upper portion of the plant. Therefore, if a plant has more developed root
system, its growth will be accelerated, thus, enhance physiological maturity and
early fruiting.
Multiple rootstock or multi-root system is the growing of plants with two or
more rootstocks. Fruit exporting countries like Taiwan, Thailand and Australia
are practicing this technique.

Mr. Rush of Balibago, of Clark Airbase, Pampanga
revealed that his late father, a professor in the University of Michigan U.S.A.,
had used the multiple rootstock technology in his plantations of oranges and
apples since the early 60's.
In the Philippines, Engr. Telesforo L. Umali and his late brother National
Scientist Dean Dioscoro L. Umali of U.P. Los Ba�os pioneered multiple
rootstocking. Engr. Umali regularly harvests fruits twice a year from his triple
rootstock durian and rambutan that were planted way back in 1980 in Scout
Borromeo, QC.

Mr. Ramon Cua, a businessman, observed in Taiwan that lychees and other fruit
trees had double or triple rootstocks making the tree prolific. A Taiwanese
consultant friend of Mr. Cua first introduced double and triple rootstocking of
calamansi and passion fruit in Cavite during the early's '80s.


 


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