Raspberry is grown up with pleasure by many gardeners and gardeners. This berry culture does not demand any special leaving. However very often many face such problem: raspberry leaves turn yellow.
Why leaves turn yellow and as to fight against it
There is set of the reasons for which it can occur on your personal plot. Some of them can easily be eliminated, but there are also those which can cause total loss of harvest.
Among the harmless reasons of yellowing of leaves on raspberry are: lack of mineral fertilizers, in particular nitrogen, manganese and magnesium; dense plantings and lack of light. For the solution of these problems it is necessary to introduce various fertilizers under raspberry bushes in time, to regularly carry out cutting, to delete the old and dried escapes, to regularly water plants.
On raspberry various diseases which cause yellowing of leaves too can develop. The most dangerous of them is root cancer of raspberry. It is bacterial disease which gets into the root system of plant. Root cancer gains special development at lack of moisture. The raspberry bushes affected with this disease cease to grow, leaves turn yellow. Over time all plants perish. To struggle with root cancer it is useless, it can only be prevented. In particular to process the soil solution of copper vitriol or potassium permanganate in the early spring. If the disease nevertheless has developed on your kitchen garden, then it is necessary to remove completely raspberry and not to put it about about 10 years.
Emergence of yellow leaves on raspberry can be also connected with such diseases as purple spottiness, rust or mosaic.
The purple spottiness is shown on leaves during the spring period. Further they become purple and gradually wither. Such spots often cover scapes of leaves, the lower and average parts of stalk. This fungal disease, is transmitted from plant to plant by disputes. For fight against this disease in the spring before blooming of kidneys the bushes spray with solution of nitrafen or the Bordeaux liquid. Also Bordeaux liquid is applied also after harvesting. In addition delete the struck plants, rake up and destroy leaves.
Rust on raspberry damages generally leaves which become yellow. At development of disease it can strike also stalks of plants. In May on raspberry convex yellow spots appear, from bottom side of leaves rusty small pillows on which disputes are formed are formed. They anew infect young bushes of raspberry with rust. The same medicines are applied to processing of plants, as at purple spottiness. The soil under bushes is regularly loosened and strewed with organic fertilizers, for example manure or humus.
The mosaic is viral disease. At it on leaves multi-colored spots are formed, they become tuberous and gruborassechenny. Berries on such bushes practically do not ripen. As the mosaic is transferred by insects wreckers therefore , first of all, it is necessary to struggle with them. Raspberry before blossoming and after harvesting is sprayed with carbophos solution. Among folk remedies use infusion of bitter wormwood or tobacco dust.
Generally all diseases on raspberry are brought on personal plot together with planting stock. Therefore it is necessary to select correctly and qualitatively saplings for landing. Before it surely lower them in the clay talker for healing of root system.
Raspberry very badly grows near potatoes, tomatoes and eggplants. It is infected by these vegetable cultures with vertitsillezny withering which is also shown by yellowing of leaves.
The set of diseases of raspberry can be prevented if to conduct the correct care for plants.