Tuesday, April 23, 2019

Beginning of bud-break in northern New Mexico


Written by: Gill Giese

phenological stage 07: Beginning of bud-break: green shoot tips just visible
Figure above- Photo Gewurztraminer:  Gewurztraminer, located at Farmington ASC, elev. 5,577 ft., near Farmington NM, at phenological stage 07: Beginning of bud-break: green shoot tips just visible*. The full grape phenological stage key is available at: https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/em8413.pdf





Here is the second photo: Refosco (an Italian variety, commonly grown in Friuli, Venezia and Giulia) at Farmington ASC, elev. 5,577 ft., near Farmington NM, approaching stage phenological stage 11: First leaf unfolded away form the shoot*. The full grape phenological stage key is available at: https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/em8413.pdf

 









Tuesday, April 16, 2019

Are Your Weed-control Products Damaging Nearby Vineyards?


April 16,2019|Written by Gill

This time of year when folks are getting active in their yards and farms, specifically, when using/applying herbicides at the same time grapevines are beginning to grow out of dormancy… it is a good idea to review an excellent publication that shows what herbicide damage on grapevines looks like. The  excellent publication I have in mind is from Oregon State University:
A
re Your Weed-control Products Damaging Nearby Vineyards? (EM9132) https://catalog.extension.oregonstate.edu/em9132/html
It reviews most of the common herbicides we use and that could damage grapevines.


Another herbicide related publication of interest is: Preventing Herbicide Drift and Injury to Grapes (EM 8860). This publication contains many photographs of herbicide damage on grape leaves. https://catalog.extension.oregonstate.edu/files/project/pdf/em8860.pdf


For those of you that have been curious about grapevine propagation, I offer my latest photos below:

Close up of grapevine cuttings with callus and nascent roots present.Grapevine cuttings with leaves and thermometer visible. 



















Figure 1: Grapevine cuttings with leaves and thermometer visible (left). Close-up of cutting with callus and nascent roots present, the cuttings were stuck the second week of March and this photo was taken April 12th.  The propagation box is outside to take advantage of ambient cool temperatures and is equipped with a heating element that keeps the base of the cuttings relatively warm.




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