Why do black currants turn yellow leaves? Causes of the disease, methods of treatment and prevention
Black currant is a plant that is resistant to diseases andunpretentious in care. But there are cases when it is sick. Yellowing of leaves is considered the most common ailment of black currant bushes. The reasons for this phenomenon can be several. Let us consider them in more detail.
Harmful insects - the main reason why the black currant leaves turn yellow
Gallow aphid - enemy number one for currantbushes. This species of aphids multiplies very quickly: in one season, several generations are born. The pest feeds on the sap of the plant, which sucks from the leaves. On the affected areas of the aphids appear bubbles of yellow or brown hue, then the entire leaf turns yellow and falls off. Gallop aphids very quickly colonize the entire bush, therefore, at the first signs of its appearance, it is necessary to treat the plant with special preparations.
Currant glass - this is another pestshrubs. Caterpillars gnaw on young shoots, sucks out the juice, which is the cause of yellowing of the foliage and the general wilting of the plant. Regular inspection and timely spraying of bushes for the destruction of harmful insects will prevent the appearance and reproduction of glass.
Why yellow leaves black currant? Reason number 2
Unfavorable weather conditions can alsoinfluence the development and growth of the bush. The cause of premature yellowing of the foliage on the currant can be a drought. In very hot summer days, the plant should be well watered, and the soil around the bush regularly loosen so that the healing moisture does not evaporate very quickly.
High humidity can also causeWhy the black currant turns yellow. Abundant and frequent watering, prolonged rains affect adversely the activity of the bush. Water washes away the nutrients from the soil, and the plant lacks the elements necessary for the full development.
An improperly chosen landing site is the reason why the black currant leaves turn yellow
Bushes in the garden should be located at a distance of 1meter from any other crops, otherwise the plant will be limited in access to light and space. Leaves on such a bush will turn yellow and crumble. Berries in such conditions are tied up small, they are sour for taste.
The leaves turn yellow at the currant even whenThe bush grows either in sandy, or in solid, nutrient-poor soil. In this case, the plant must be transplanted into a more suitable place or regularly introduced into the soil mineral and organic fertilizers.
Can supplementary feeding cause why the black currant leaves turn yellow?
Fertilizing the bushes, you need to adhere to the rules and regulationson their introduction. Excess of peat in the soil affects the root system of the plant, which provokes yellowing and falling leaves. Young currant bushes are very sensitive to potash and phosphorus fertilizers. Overdosing them causes a root burn, blanching and shedding of foliage and ovaries.
In order for the plant to develop fully,need preventive inspection of bushes, a favorable environment for their growth and development, timely treatment of plants and soil. Provide the currant in your garden with such conditions, and it will please you with a healthy view and a rich harvest.