Viticulture
Malbec is very susceptible to various grape diseases and viticultural hazards-most notably frost, coulure, downey mildew and rot but the development of new clones and vineyard management techniques have helped control some of these potential problems. When it is not afflicted with these various ailments, particularly coulure, it does have the potential to produce high yields. Too high a yield, as was the circumstance in Argentina until recently with their heavy use of flood irrigation, the wines become more simplistic and lacking in flavor. Malbec seems to be able to produce well in a variety of soil types but in the limestone based soils of Cahors it seems to produce its most dark and tannic manifestation. There are distinct ampelographical differences in the clones of Malbec found in France and in Argentina, with Argentine Malbec tending to have smaller berries.
Read more about this topic: Malbec