maintaing vineyards at night

[Thomas]

An interesting question, and one that could use scientific studying, if it hasn't already been done. It is true enough with other plants. For instance, watering certain plants at mid day could actually harm leaves when the sun beats down on the water, almost boiling it on the leaves.

With regard to such matters as spraying for pests and fungi, daytime work is likely preferable so that the spray material would not only dry quickly but would set better by not encountering nightime or morning dew.

It would also be extremely difficult to perfomr certain functions at night, like tying canes, but then, this is not an intrusive function that relies on anything flowing inside the plant.