Many gardeners complain that at the beginning of summerraspberry is yellowing leaves. This mainly occurs during the ripening period of berries. First, the leaves begin to fade, and then the stems with the fruits dry up. It is important to solve the problem in time to save the harvest. There are several reasons why the leaves turn yellow in raspberry. Depending on the type of disease, a specific method of fighting the virus should be used.
Садоводы часто списывают ухудшение состояния plants for summer drought or lack of nutrients. Of course, such reasons can also be, but with a lack of moisture raspberries wilt, the leaves burn, but do not turn yellow and do not fall off. Some craftsmen offer to spray sick bushes with potassium permanganate, but this strong oxidizer is unlikely to be able to help, and the soil contains a sufficient amount of manganese.
If the leaves turn yellow at the raspberry, newstalks grow short, and then the bush completely dies, then the plant is sick with root cancers. In this case, it remains only to uproot all plantations, and at this place do not plant berry crops for about 15 years. The reason why the leaves turn yellow in raspberry can be more innocuous. For example, in the middle of summer it dries up due to excessively dense plantations. Poor aeration and illumination negatively affects the condition of plants.
For raspberries, a virus such as wilt is dangerous.A sign of vertical wilt is the gradual wilting of the shoots along with the berries, which acquire a violet-bluish color. The reservoir of the virus is considered to be solanaceous cultures, for this reason near the raspberries one can not plant potatoes, seedlings of eggplants and tomatoes. Especially quickly the disease progresses on wetlands. Another reason why the leaves turn yellow in raspberry, may be unsatisfactory care of the plantations. Every year, the earth needs to be dug up and fed up. As fertilizer, you can use chicken manure, compost and humus.
A fairly common disease ispurple spotting or didymella. Many gardeners wonder why spring raspberry leaves turn yellow, not suggesting that it is infected with a fungus. In mid-June, red-violet spots appear on young shoots, which eventually grow and cover the entire bush. In autumn, most shoots die, and the rest very badly endure the winter. The disease develops thanks to a rainy and warm spring, as well as a winter with frequent thaws.
If the answer to the question why the leaves turn yellowraspberries, found, it is necessary to start to fight the problem. First of all, you need to buy only a proven and healthy planting material. It is recommended to choose varieties showing resistance to the virus, such as the Skromnitsa, Kuzmina News, Balsam, Scarlet Sail, Bryansk. It is necessary to prune the bushes in time, tie them to the trellis for ventilation. All stained shoots should be cut without delay. In the period of bud budding, the growth of young shoots, before the flowering begins and after the fruiting, raspberry can be sprinkled with 1% boron liquid. Such methods of fighting the virus will help to stop the development of the disease and save plants from death.
