vineyard

Nitrogen Fertilization in the Vineyard

Timely Viticulture: Pre Bloom
The annual goal in the established vineyard is to have the vines fill their allotted trellis space, top out just above the top wire at verasion, and produce a crop that is in balance with the vegetative vigor. For many grapevines (especially vinifera varieties), excessive nitrogen may lead to...

Canopy Management - Shoot Thinning and Positioning

Timely Viticulture - Pre-Bloom
Updated May 4, 2017 Managing excessive vine vigor is one the greatest battles in Eastern viticulture and this problem is exacerbated in seasons with high rainfall and warm spring temperatures. Many vigorous varieties and variety/rootstock combinations are quickly beginning to increase in shoot...

The Spotted Wing Drosophila (SWD) - Part 2: Management

Timely Viticulture: Pre Harvest
The Spotted Wing Drosophila (SWD) is a small vinegar fly with the potential to damage many fruit crops, particularly thin-skinned fruit. SWD was first detected in the western United States in 2008 and has already become a major pest of many fruit and berry crops in Maryland, with potential to cause...

The Spotted Wing Drosophila (SWD) - Part 1: History, Background, and Damage

Timely Viticulture: Pre Harvest
History The Spotted Wing Drosophila (SWD) is a small vinegar fly with the potential to damage many fruit crops, especially thin-skinned fruit. SWD, or Drosophila suzukii, is native to eastern Asia. Most species of vinegar flies attack overripe or damaged fruit. However, SWD is unique as the female...

Grape Berry Moth

Timely Viticulture: Mid Season and Pre Harvest
Although the Japanese beetle is rapidly moving to the top of the list in many areas of Maryland the grape berry moth (Paralobesia viteana; GBM) has typically been the most significant insect pest in the vineyard due to its direct and indirect damage to the berries and clusters. GBM is native to...
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