Article: Fertigation in grapes.(Brief Article)

representing an alternative to tradition

It's feast or famine in vineyards.

There are two schools of thought about how to raise high-quality wine grapes. One way is to "dry down" the vines to raise sugar. A newer practice takes an opposite tack, keeping the vines nourished and growing to build sugar content.

Hal Carlson of AgroTech Supply in Sonoma County is among those who advocates the latter. He won't hesitate to prescribe what he calls an "aggressive and progressive" fertilization program to a vineyard owner who wants to boost quality and yield. With land prices topping $50,000 and $60,000 an acre and the strong demand for wine grapes, it's ...

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