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Rootstock Field Day – East Wenatchee & Wapato

October 19, 2016 @ 8:00 am - 5:00 pm

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The Rootstock Field Day Event begins in East Wenatchee and moves south to Wapato via Mattawa. To prepare for the field day, you can review the rootstock trial data by clicking here.


Morning event: 8:00 AM at the loading area near the pond at McDougall and Sons Legacy Orchard.

Host: Scott McDougall, McDougall and Sons Legacy Orchard;
Directions: Turn left at 4507 Grant Rd. travel up the paved road — Northern Fruit CA facility on right (east), server farm of left. Hint: Grant Rd swings into a sweeping right turn past the airport and becomes S. VanWell, to remain on Grant Rd, turn left off South VanWell in the middle of the curve.

Stop 1: CAR POOL to the Honeycrisp trial with Geneva rootstocks: Bud 9, G.969, G.210, G.41, G.935, G.214, G.11, G.890,
M.9 Nic 29, M.9 T337. Block is in a V trellis spaced 2 feet in the row.

Discussion: Management of Honeycrisp in new plantings. What can the Geneva rootstocks offer compared to the M.9 standards.

Stop 2: MSU cherry rootstock trial: Three scions: Early Robin, Sweetheart, Regina.
Standard roots: Gisela 5 and 6, Krymsk 5 (sweetheart) and 6 (Early Robin, Regina)

Planting: SSA vertical trial Spacing is 12 x 2. Sweetheart on Clinton. The rootstock trial is in a V, 12 foot spacing 2 foot spacing on mid size rootstocks, 1 foot spacing on small rootstocks. First and second leaf plantings with more traditional spacing.

Discussion: SSA high density plantings with minimal pruning at planting.

Stop 3: Mattawa cherry rootstock trial ~ 12:30 pm 28233 Rd O sw, Mattawa
Host: Washington Fruit & Produce — Mario Martinez

Location: Road ‘O’ sw, North of Road 29, look for the wind break on the edge of Rd.O, turn EAST – cherries on the left, Granny Smith apple on the Right as you drive towards the loading area near the trial. Please park in the loading area and walk EAST to the trial.

Similar to the planting in East Wenatchee, but the sand has challenged Gisela 6 and the MSU Clinton rootstock. Krymsk 5 and 6 does not mind the sand. The MSU rootstocks Lake, Clare, and Cass show their dwarfing traits, but do not indicate an aversion to sand and/or heat.

Afternoon event: 3:00 PM Wapato trial south of Yakima:

Directions: 5112 Konnowac Pass Rd. Turn left into orchard, Gala on Right, Pears on left of the orchard road. Drive to loading area- west end of orchard – ARS lab fence.
Take exit 44 off of I 82. Head east towards Yakima Valley highway, turn right. Travel southwest to Konnowac Pass Rd, turn North. Pass the USDA-ARS driveway, take the first orchard rd left North of ARS.
5112 Konnowac pass.

Trials: Both 2015 trials are unfumigated replacement tree trials in a site that has shown strong response to fumigation. We will take a walk through the 2006 trial to view the ‘difficult replant scion trial’.

Rootstocks: Bud 9, G.969, G.210, G.41, G.935, G.214, G.11, G.890, M.9 Nic 29, M.9 T337.

Last year fireblight, 2016 – rodents!!

Gala trial: in addition to the rootstocks are some pruning treatments:
All rootstocks have a ‘stub’ marked (s) on the tree tag…. All feathers were trimmed to 4 to 6 buds to eliminate blind wood and most bloom. Trees also had a heading cut taking 12” to 18” of the leader off.

Many rootstocks have a tipping treatment, marked (t) where the end 4 buds were tipped and the leader was tipped. A few roots received a pruning (p) where the limbs were all removed and the leader headed at the waist.

2nd trial: Difficult replant scion in an unfumigated replacement tree trial. (Red Delicious) All trees received the stubbing pruning treatment. Same rootstocks as Gala plus M.106, which is NOT replant tolerant in this site.


October 19, 2016
8:00 am - 5:00 pm
Washington State University