投稿の詳細: 異変　An accident.

今年はメルローの畑に異変が起きた。
結論から言うと、生理障害だと
判断した。

症状はひどいすぎる縮果。
原因はおそらく地下水位。
地下水位が高い→
根が深く伸びない→
根が浅く表土に分布→
7月の旱魃（6月の半分の降水量）・
かつ副梢の伸び→
表土が極度に乾燥→
房から水分が奪われる→
縮果。

こういうパターンだと思われる。

そのせいだろうか、今頃
副梢の端あたりから
少しだが花穂が
できているのを見つけた。

剪定で切ってしまう枝なので
問題はないが、今年は
この畑固有の現象が起きて
色々考えさせられている。

I experienced accidents
in a Merlot vineyard this year.
It seems a physiological accident
to the vines.

The symptom is heavy shriveling.
It may be caused by the higher underground
water level. What happened may be;
Higher underground water level →
Limited growth of root system →
Root system spreads in the limited
depth from the surface →
Drought in July (half rainfall of that
in June) & secondary shoots growth　→
Dryint out of the ground surface where
the root systems exist →
Water is absorbed from the bunches　→
Heave Shriveling.

Maybe due to the accident, I found
the new shoots growth with baby bunches
from the secondary
branches at this time though not so many.

These branches may not cause harm to next
year because the brances are not necessary ones
which will be pruned in this winter.

Because of these puzzling accidents, I have
come to consider the factors of growing grapes
including soil, weather, macro-, meso- and
micro-climate, vine's physiology,
and other interrelated issues
in each vineyard more.