Winter Pruning Solaris on 'Rods and Spurs' (Strecker-Zapfen) Training System скачать в хорошем качестве

Winter Pruning Solaris on 'Rods and Spurs' (Strecker-Zapfen) Training System

How to prune Solaris vines on this unusual Training system. 15th April 2012. NOTE: This video assumes that viewers already have a good grasp of general grape vine pruning techniques. If your vines are too vigorous on Guyot then why not try the 'Rods and Spurs' or 'Strecker-Zapfen' training System? This is a permanent cordon system so it is essential to leave adequate number of spurs so as to keep the cordon regenerating new growth close to the cordon so as to avoid having to replace the cordon which would involve leaving a large wound with potential trunk disease implications. As the Solaris variety has an early bud burst we prune it as late as possible to give it the best chance of avoiding Spring frosts because bud burst is delayed by a day or two (or three) by pruning late. However, if the buds are already bursting, as in this video, you cannot just pull the cut canes out vigorously as you would if the buds were still dormant. Instead much more cutting is required to chop up the canes to extract them from the trellis without damaging the remaining buds. Just in case either of the two cordon 'arms' have to be replaced at some time in the future we leave a single bud spur a few centimetres below the horizontal cordon, and remove any other canes growing from the trunk. A key area of the cordon is the first 30cm near the trunk and we have to ensure that there is at least one viable spur left there otherwise beginning the process of replacing the thick cordon arm may be necessary. Replacing the cordon arm is not covered in this video. One of the first things to do when pruning this system is to identify spurs in this vital area (30cm near trunk) and make the cut(s). Both the spurs and the rods should grow from as near as possible to the cordon. Working along the cordon from the trunk cut spurs at approximately every 25cm. Then start selecting rods of 4 visible buds length. We leave 7 or 8 such rods on our Solaris which are spaced 1.3m apart in the rows. The rows are 2.5m apart. We aim to leave approx 32 buds on the rods and 8 single 'visible-bud' spurs. These single visible bud spurs should grow 2 canes. Next year one of these will be cut as the rod, leaving the other one as the replacement spur. Always choose the one nearest the cordon as the spur, adhering to the principle of keeping the growth as near to the cordon as possible! Spurs positioned at the top or sides of the cordon are to be preferred over those underneath. Rods can 'point' in any direction, although ones pointing down are seldom chosen as new growth from these would soon grow near the ground. Rods are best spaced out with as much distance between them as possible. Ones pointing outwards are to be preferred over those growing vertically upwards.