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Hello Everybody,<br>
I am trying to figure out who is involved in the apple trials too. I
am also looking for a potential coordinator and participates of the
a new apple rootstocks trial 2018. We can discuss these subjects
during the meeting. Actually I received a request of interest from
Susanne Blatt. I would like to know if other State are interested.<br>
I am also asking Gennaro if he can provide a list of new rootstocks
from his program to be included in the new trial. It will be nice if
you can present informally to the apple group some of the new
genotypes you are testing. I knew you are testing new genotypes
also in Washington and I would like to know if you have in mind 3-4
genotypes interesting that can be included in the 2018 trial. <br>
During the meeting I also would like to have a discussion about the
future trials design and management.<br>
Following the report of 2015 I build up this table please fill it
with your name and if the trial have two cultivars specify which you
have under evaluation.<br>
It will take only few minute to do, but it can provide a general
picture of the existing situation and the name of the person
involved as referent. If your State is not listed in the table
please add a column. <br>
Kind regards,<br>
Stefano<br>
<br>
Here the apple section of the 2015 report. <br>
<br>
A paper was submitted to the Journal of the American Pomological
Society with the title “Time Required for Classifying Rootstock
Vigor in Multi-location Rootstock Trials”. This paper will likely
appear in the January issue of the JAPS. Data from the 1994 and 2003
apple rootstock trials were used to determine the time required to
classify rootstock vigor. Very vigorous rootstocks, such as PiAu
56-83 and very low vigor rootstocks, such as M.27, were
statistically different than standard rootstocks (M.26 and M.9 size
class) by the fourth year after planting. Six or seven years were
required to separate M.26 and M.9 NAKBT337, but rootstocks in the
same size class (M.9 NAKBT337, G.935 and G.16) were not
significantly different after 10 years. In future NC-140 apple
rootstock trials, we should be able to accurately classify rootstock
vigor after six or seven years at most locations. <br>
<br>
The 2010 NC-140 Apple Rootstock Trial includes 10 Budagovsky, 16
Geneva, 3 Pillnitz, and 3 Malling (controls) rootstocks. Fourteen
locations use Honeycrisp as the scion cultivar, and 7 locations use
Aztec Fuji. All trees were supported to approximately 3.5 m and
grown as Tall Spindles. At the end of 5 growing seasons and across
all locations, the largest Honeycrisp trees are on B.70-20-20. This
rootstock results in a tree much too vigorous for high-density
planting. The smallest trees are on B.71-7-11. This rootstock
results in a Honeycrisp tree which is too weak for commercial use.
Yield efficiency did not vary greatly among rootstocks, except that
the most vigorous (e.g., B.70-20-20) are very inefficient. Fruit
size has been good for all Honeycrisp trees in this trial, except
for those from trees on PiAu 9-90. In the Fuji trial, some trees
were lost in the first season due to damage in the nursery, but
since that time, trees have grown very well. At the end of 5
growing seasons, largest Fuji trees were on B.70-20-20 and the
smallest were on B.71-7-22. As with Honeycrisp, both rootstocks
would be consider unacceptable. Generally, yield efficiency was
negatively related to tree size. Fruit size was relatively
consistent, except fruit from trees on B.7-20-21 were much smaller
than those from all others. Trees on PiAu 9-90 continue to have
severe chlorosis in BC, a sickly appearance, and often small fruit
size.<br>
<br>
The 2014 Apple rootstock planting was established in 15 locations in
the United States (AL, ID, IN, MA, ME, MI, MN, GA, NJ, NY, PA, UT,
VA, WA, WI), two in Canada, and one in Mexico
(<a class="moz-txt-link-freetext" href="http://bit.ly/1zv3wCc">http://bit.ly/1zv3wCc</a>). The trial consists of the following
rootstocks: B.10, G.11, G.202, G.214, G.30, G.41, G.5890, G.935,
G.969, M.26 EMLA, M.9 T337, V.1, V.5, V.6, V.7. The trial is being
coordinated by John Cline who has also agreed to analyze the data.
This trial has two cultivars: Aztec Fuji (AL, ID, GA, NJ, ON, PA,
UT) and Honeycrisp (ID, IN, MA, ME, Mexico, MI, MN, NJ, NY, Ontario,
PA, VA, WA, WI), planted to a ‘tall spindle’ systems at a 5 x 12
feet, and 4 x12 feet spacing, respectively. Trees are planted using
a randomized block design with single trees serving as experimental
units. Each site selected a pollinizer variety since some sites are
very limited in adapted varieties. Trees were established in the
spring of 2014. The trees were propagated by Willow Drive Nursery,
WA. Data protocols have been established for 2014 and 2015. In 2014,
the following data were recorded: 1) initial trunk diameter measured
at planting 30cm above graft union; 2) number of side branches
>10 cm at planting; 3) trunk circumference in the fall of 2014;
4) height of the graft union above soil; 5) tree status at the end
of the 2014 growing season.<br>
<br>
For the 2015 Organic Apple Rootstock Trial, trees have been dug at
Wafler Nursery. The trial will be planted at 14 locations and will
evaluate 9 Geneva rootstocks and 1 Malling rootstock. Modi is the
cultivar and Liberty will be the pollenizer. The design is five
blocks in two-tree sets and will require 1/10 acre. Organic
certification is optional, but orchard management must be organic.
Land does not have to be organically certified prior to planting. <br>
<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 10/27/2016 12:40 PM, Fallahi,
Esmaeil (<a class="moz-txt-link-abbreviated" href="mailto:efallahi@uidaho.edu">efallahi@uidaho.edu</a>) wrote:<br>
</div>
<blockquote
cite="mid:EB9D67D9-8C87-485B-ACDF-4328CB25D225@uidaho.edu"
type="cite">
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<div>Hi Wes. We (Idaho) are in that project and will send the
report soon. Essie <br>
<br>
Sent from my iPhone</div>
<div><br>
On Oct 27, 2016, at 1:08 PM, Wesley R. Autio <<a
moz-do-not-send="true" href="mailto:autio@umass.edu"><a class="moz-txt-link-abbreviated" href="mailto:autio@umass.edu">autio@umass.edu</a></a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<p>I need to know who is participating in the 2015 Organic
Modi Apple Trial. In 2015, I received data from IA, MA, MI,
NJ, NM, NY-Ithaca, NY-Geneva, Vermont, and WI. My initial
list suggested that California, Chihuahua, Colorado, Idaho
and Nova Scotia were also involved, but I have not seen any
data. For the latter, please confirm whether or not you are
part of this project. If I don't hear from you, I will
assume that you are not.<br>
</p>
<br>
<pre class="moz-signature" cols="72">--
________________________________________________________________________
Wesley R. Autio
Professor & Director, Stockbridge School of Agriculture
205 Paige Laboratory
161 Holdsworth Way
University of Massachusetts Amherst
Amherst, MA 01003-9286
tel 413-545-2963 fax 413-577-0242 cell 413-348-8557
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://urldefense.proofpoint.com/v2/url?u=http-3A__stockbridge.cns.umass.edu&d=DQMFAg&c=C3yme8gMkxg_ihJNXS06ZyWk4EJm8LdrrvxQb-Je7sw&r=WSdMvazbTx70F-ycfKBKjz6uFh91wpOIh7NH46Li6ww&m=6A6rsvinPNfZ1b4nuYxZEKxiVvwtqosJr-oXdWuqDH4&s=pakfc0gH-Jm-gVrwvR2Koi-igf2o4VT07gaDkWVWQLA&e=">http://stockbridge.cns.umass.edu</a></pre>
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<pre wrap="">_______________________________________________
nc140 mailing list
<a class="moz-txt-link-abbreviated" href="mailto:nc140@virtualorchard.com">nc140@virtualorchard.com</a>
<a class="moz-txt-link-freetext" href="https://urldefense.proofpoint.com/v2/url?u=http-3A__virtualorchard.com_mailman_listinfo_nc140&d=DQICAg&c=C3yme8gMkxg_ihJNXS06ZyWk4EJm8LdrrvxQb-Je7sw&r=WSdMvazbTx70F-ycfKBKjz6uFh91wpOIh7NH46Li6ww&m=6A6rsvinPNfZ1b4nuYxZEKxiVvwtqosJr-oXdWuqDH4&s=RCuVNZVwy1OL30cwDTKUUHgw5BSJ804pcwfhvSpeocU&e=">https://urldefense.proofpoint.com/v2/url?u=http-3A__virtualorchard.com_mailman_listinfo_nc140&d=DQICAg&c=C3yme8gMkxg_ihJNXS06ZyWk4EJm8LdrrvxQb-Je7sw&r=WSdMvazbTx70F-ycfKBKjz6uFh91wpOIh7NH46Li6ww&m=6A6rsvinPNfZ1b4nuYxZEKxiVvwtqosJr-oXdWuqDH4&s=RCuVNZVwy1OL30cwDTKUUHgw5BSJ804pcwfhvSpeocU&e=</a>
</pre>
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<br>
<pre class="moz-signature" cols="72">--
Stefano Musacchi
Endowed Chair
Associate Professor
Tree Fruit Physiology and Management
Department of Horticulture
Tree Fruit Research and Extension Center
1100 N. Western Avenue
Wenatchee WA 98801-1230
Phone 509-663-8181 ext 236
Fax 509-662-8714
email: <a class="moz-txt-link-abbreviated" href="mailto:stefano.musacchi@wsu.edu">stefano.musacchi@wsu.edu</a>
<a class="moz-txt-link-abbreviated" href="http://www.musacchi-orchardmanagement.com">www.musacchi-orchardmanagement.com</a></pre>
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