Vines produce large, succulent leaves that in healthy, beautiful home garden. Occasionally, the leaves roll down. An indication of disease, herbicide injury or a lack of nutrients In rare cases, leaf curling to be a sign of drought stress. The plants healthy with good care, so they are better able to withstand, diseases and other problems.
Grape leafroll disease
Grape leafroll disease is more common in the vineyards have the home plantation, but devastating effects, including the loss of 30 to 50 percent of income have. On the red varieties, the leaves turn red. To white varieties, the leaves turn yellow. Both varieties have cupping or turn down the sheets. The veins remain green. There are no chemical controls for leafroll disease, although treatment restrict aphids and scales through the use of pesticides, the spread of the disease can be. Plant certified disease-free plants and remove and destroy infected plants.
Soil phosphorus and potassium deficiencies can mimic grape leafroll disease. Send a soil sample to a university extension office to assess the nutrient content in the soil. Ask the extension office for instructions fertilizer, the grapes. Amendment of the soil with a balanced fertilizer, anything is needed to fix the problem is to be.
Glyphosate and phenoxy herbicides such as 2,4-D, may distort leaf and even plant death. The herbicides of the surrounding areas or drift may be applied using a syringe to the contaminated vines. Good water the plants, in order to dilute the effect. If the damage is severe, plants usually recover within a few months.
Vines given proper care often suffer problems in a home garden. Plant them in full sun, so that at least six to eight feet. For every branch Adequate air circulation keeps many diseases at bay. Not overfertilize the vines that can weak, vulnerable cause strains. Remove dead or diseased leaves, stems and fruits immediately.