The topping of the screw is one of the operations of pruning and more important. Has the purpose of limiting the development of the crown and to reduce the size of the buds to ensure a better circulation of air, which helps to preserve the lives of any fungal diseases, and the penetration of light to promote the proper ripening of the grapes.

In this article we will see when and how to perform the shearing of the screw. BFM can help your company make this a fast, secure, and economically sustainable, thanks to a wide range of shearing machines are designed to meet the different needs of each vineyard.

When and how you run the topping

Usually the topping of the screw is between the phenological phase of post-flowering and the pre-closure of the bunch. Performed in this period lets you avoid the grape newly formed scottino, and provides the time to mature to the little woman that you develop later on. The actions after this period, however, are not recommended because they may expose the grapes to a higher risk of sunburn and lead to a premature aging of the crown, due to the removal of the leaves are young and active from the point of view of photosynthesis.

The topping is the practice in different ways depending on the purpose to reach.

• Contain the development of the crown the reduction of the layers of the leaf and guarantee to plant the best microclimatic conditions, both for the penetration of light for air circulation, which are essential to prevent diseases and to promote the proper ripening of the grapes. In general, the topping should leave 8-12 leaves after the cluster in order not to create situations of excessive stress at the screw.
• To promote the proper ripening of the grapes: climate change are having on the quality of the grapes. More and more often, in fact, there is a mismatch between technological maturation and phenolic maturation for the grapes tend to achieve the concentration of sugar in the grape harvest when the beans are still green. To realign the two processes, with the topping you will go to the dividing asunder of only the upper part of the crown.

The shearing machines professional BFM

With the advent of shearing machines, mechanical, topping was one of the first things to be mechanized, large-scale becoming fast and economically sustainable for the large-scale farms.

BFM offers you a wide range of shearing machines professional to suit different types of terrain, even on a slope and plantations in rows, very large. These machines are designed for maximum yields in the vineyard and in the minimum space to be closed, widely adjustable according to the type of operation to be performed.

Among the most innovative models that you can find in the catalog BFM there are:

• The shearing synchronized CM-SN it is equipped with stainless steel blades, designed to create the effect of suction and polished to prune the shoots more young people without an excessive deposit of green. Has a system for adjusting the tension of the straps to help prevent slippage due to the thick vegetation.
• The shearing synchronized simple double-CM-SDT it is the ideal machine for working in rows on flat terrain. Available with various options, including the opening in the side and the inclination of the bar, is equipped with the same cutting bars of the version CM-SN with a new movement to meet the needs of pruning in plantations in rows, very large.
• The shearing electric CM-SNE features of a power system, fully electric, both in the operation of the engines is in the jacks for the movement; lightweight, versatile and robust, maintains the best features of the model CM-SN. A study based on this model: Shearing power: BFM presents CM-SNE, 100% electric, and functional.

Conclusions

The topping of the screw it is essential to ensure the health of the plant and the proper ripening of the fruit. Is performed in the period between the post-flowering and the closure of the bunch and is practiced by removing the leaves that cover over clusters: the method and the amount of leaves to remove, vary according to the purpose to achieve that it may be a mere thinning to improve the ventilation and penetration of light on the grapes, or an operation more accurate to delete just the leaves that can prevent a proper ripening of the grapes.

BFM offers you a wide range of shearing machines to perform the shearing of screw safely and quickly. Contact us for a personalized consultation: our team will advise you on the solution that best suits the needs of your vineyard.