Grape
Grapevine fungicides
The objective of this Campo Demo is to show and compare every fungicidal strategy against Plasmopara viticola (downy mildew).
It is a particular fungus that develops in hot and humid environments. Symptoms include irregular yellow spots on the upper surface of the leaves (that can brown because of necrosis) and white and dusty spots on the bottom surface. On the bunches, the fruit is covered by a white/grey dust and changes color from purple to a reddish-brown.
We have tried several strategies and products, both biological and synthetic, to evaluate their effectiveness in controlling this pathogen.
Grapevine herbicides
A problem that is present in several vineyard areas is the spread of some types of infesting weeds, such as Conyza canadensis, which have developed a certain resistance to the most widely used herbicide in viticulture: glyphosate.
The objective of this Campo Demo is to show alternative products and strategies for controlling these infesting weeds in the vineyards.
Grapevine fungicides
The fungicide Campo Demo will be held in the Asti province, in the center of the viticultural area. The variety considered will be the White Muscat, among the most representative of the area and very sensitive to the main cryptogamic diseases.
Products with different mechanisms of actions, for biological agriculture and widespread use in the containment of downy and powdery mildew will be tested.
In order to be able to see the effectiveness of the different solutions tested, field visits are scheduled during the second half of July.
Grapevine biostimulants
The idea of this Campo Demo is to test the effectiveness of biostimulant products that, applied on the leaves, could interact with the metabolism of the plant, favoring the concentration of solutes. If the results will be interesting enough, this solution could substitute or support the practice of “manual thinning” in order to increase the quality of the product while limiting the production costs.
The targets will be qualitative traits, with the possibility of implementing microvinification.
The analyses that will be conducted are:
- Maturation curve;
- Anthocyanins;
- Polyphenols;
- Maturation index;
- Tannins;
- Sugars;
- pH;
- Acidity.
The Grapevine biostimulants Campo Demo is a great opportunity offered to evaluate the effectiveness of different products.
Grapevine herbicides
A problem present in several vineyard areas is the spread of some types of infesting weeds, such as Conyza canadensis, which have developed a certain resistance to the most widely used herbicide in viticulture: glyphosate.
The objective of this Campo Demo is to show alternative products and strategies for controlling these infesting weeds in the vineyards.
Grapevine fungicides
Evaluation on cv. Chardonnay and white Moscato of the effectiveness of protection strategies for containing downy mildew on grapevines.
Grapevine biostimulants
Grapevine herbicides
Autumn herbicides is an uncommon practice in viticulture. We tried several residual action molecules combined with active ingredients with contact action and also glyphosate.
Grapevine fungicides
Plasmopora viticola, a causative agent for downy mildew in grapevines, is a particular type of fungus that develops in hot and humid environments. The symptoms appear as irregular chlorothic spots on the top side of leaves, which could subsequently necrotize and a powdery coating on the bottom side. The fruits are covered by a whitish powder and change color from purple to reddish brown.
Uncinula necator is the cause of powdery mildew on grapevines. In hot and humid environments, it infects all the green tissues, including leaves and young bunches. The symptoms are easily recognizable and identifiable: a white-grey powder covers the infected tissues, visible on the top side of the leaves and the fruits.
We have tested different strategies and products, both biological and chemical, in order to evaluate their effectiveness in controlling these pathogens.
