Practically I think the main cause of leaf roll virus is grafting of virus hidden stock or scion
Grapevine fanleaf virus infects grapevines. It causes chlorosis, or insufficient chlorophyll production, in the leaves and reduces fruit quality.
When the Grapevines Bloom on the Danube was created in 1965.
i dont no
There is no specific collective noun for grapevines, in which case, a noun suitable for the context of the sentence is used, for example a tangle of grapevines, a cloak of grapevines, etc.
A grapevine has netted veins.
The leaf has a wax coating, so water will roll off or the leaf would float on the water.
Sunlight causes this.
A Vineyard
Grapes...
There isn't a word for a group of grapevines... sorry. But I think you should just call it a bunch of grapevines... because you call them a bunch of grapes, right? So why shouldn't grapevine be the same?
With great difficulty
because the leaf is non polar or Because the leaf is coated in lipid molecules