Page 56 - עלון הנוטע יוני 2019 בננה, גפן: ענבי מאכל ויין

ת פשה הרימזה דעומל תויהל הלוכי לוביה הבוגב יולת 'דל ןוידפה רשאכ
The effects of pruning date on bud break .תויחוורה לע תערכמ הע
and yield of 4 wine grape varieties in
4 seasons at the Southern inner plain of Israel העיגפ תנכס םיתעל ןמוט םדקומ בולבלש ןובשחב איבהל שי ןכ ומכ
הכירצ הניא הרימזה דעומ לע הטלחההש ןכתי ןכ לע .יביבא דרבמ
Nir G. / Carmel Winery (gilnir24@gmail.com) ת בל םרוכל בטייו םינזה לש תוליפאה וא תוריכבה תדימב היולת תויהל
Yonacha A., Aqua M. / Hafalcha coop. Eshtaol and Naham ןפואב עובקל ידכ ,ומרכ יאנתב םינושה םידעומה תועפשה תא ןוח
.םירצבנה םינזה רדס תא לכשומ
Abstract
The experiment was constructed in order to investigate the rela- תודות
tionship between the date of winter pruning and bud break and תדחוימ הדות .ועוציבב הרזעה לעו רקחמה ןומימ לע למרכ יבקיל הדות
yield of 4 wine grape varieties.
For 4 consecutive seasons: 2013/14, 2014/15, 2015/16 and רקחמל םימרכה תאצקה לע םחונו לואתשא תואובמ החלפה תדוגאל
2016/17, 12 vines in 2 adjacent rows of commercial vineyards .ועוציבב הרזעה לעו
at the Southern inner plain of Israel, were spur pruned at 7 תדחוימ הדות .ועוציבב הרזעה לעו רקחמה ןומימ לע למרכ יבקיל הדות
consecutive 14d intervals, starting December 15. The last רקחמל םימרכה תאצקה לע ,םחונו לואתשא תואובמ החלפה תדוגאל
pruning date was March 15th. The experiment was performed .ועוציבב הרזעה לעו
in Chardonnay, French Colombard, Carignan and Cabernet הרזעה לע ,למרכ יבקיב תיאלקחה הקלחמה להנמ ,ןתוד רורדל הדות
Sauvignon. .יטסיטטסה חותינב
Chilling hours at the first pruning date of the 4 seasons were:
137, 0, 68, 32, respectively and the cumulated chilling hours at תורפס תמישר
the last pruning date were: 386, 339, 393 and 488, respectively. 1. Chandler W.H, Kimball M.H., Philip G.L., Tufts W.P., Weldon
In all seasons in all varieties, pruning at the 2-3 early dates, re- G.P. (1937): Chilling requirements for opening of buds on de-
sulted in delayed and non- uniform bud break. The rate of bud ciduous orchard trees and some other plants. In California
break was enhanced with the delay in pruning. Bud break of all Agr. Exp. Sta. Bul 611.
pruning dates was eventually almost maximal. 2. Lavee S., Shulman Y., Nir G. (1984): The effect of cyanamide on
In Chardonnay, French Colombard and Carignan, the average 4 bud break of grapevines Vitis vinifera L., 17-29 in: Winkler R.J.
seasons yield of the 3 early pruning dates, was lower than the (ed.). Proc. of Symp. on bud dormancy in grapevine: Potential
later dates (significant in the first 2 var.). Pruning in 1st or 15th and practical uses of hydrogen cyanamide on grapevine. Univ. of
of February resulted in the highest average yield. Thereafter the California, Davis.
yield decreased gradually (in Chardonnay the yield of the last 3. Dokoozlian N.K. (1999): HortScience 34 (6): 1054-1056.
pruning date was significantly lower than all the other dates). 4. Khanduja S.D., Balasubrahamanyam V.R. (1972): Fruitful-
There was a correlation between the average chilling hours at ness of grape vine buds. Economic Botany 280-294.
each pruning date and the average yield of those 3 varieties. In- 5. Frioni T., Tombes S., Silvestroni O., Lanari V., Bellincontro A.,
terestingly, the yield of the late variety Cabernet Sauvignon, was Sabbatini P., Gatti M., Poni S., Palliotti A. (2016): Post-budburst
not affected by the pruning date and no correlation was found spur-pruning reduces yield and delays fruit sugar accumulation
between chilling hours and yield. n in cv. Sangiovese in central Italy. Am. J. Enol. Vitic 67: 419-425.

רצנ ישי ר״ד הארנכ :םליצ

2019 ,ג”ע הנש ’עטונה ןולע‘ 56 ‘Alon Hanotea’ vol. 73, 2019