The grape leaves are yellowing. What's going on?

Drug damage

If the whole rapid leaves turn yellow, the possibility of drug damage is greater.

Root and leaf diseases

If several leaves and some leaves turn yellow, and there is a process of development, then root diseases and leaf diseases are more likely.

Deficiency of trace elements

If the leaves in question are yellow only between the veins, but the veins are green, then iron deficiency or magnesium deficiency is more likely. If the old leaf is yellow, it can be determined as magnesium deficiency, and if the new leaf is yellow, it can be determined as iron deficiency.

Disease

If the leaves in question are green between the veins and the veins are yellow, it can basically be determined to be viral. If there are a lot of slowly necrotic yellow spots on the problem leaf, it can basically be determined to be a leaf fungal disease.

Fertilizer damage

If the problem leaf begins to dry up from the edge of the leaf, but the vein is normal between the vein and the vein, it can be identified as root damage and fertilizer damage.

What is the reason why the grape leaves turn yellow? Prevention and treatment of yellowing of grape leaves

The yellowing of grape leaves is a common problem in the process of grape planting. It is mainly characterized by uneven chlorosis and yellowing in the middle part of leaf vein and yellowing and scorching of leaf margin, which is a kind of physiological disease of grape. What on earth is the reason for the yellowing of grape leaves? The following is to introduce to you the prevention and treatment of grape leaf yellowing.

The main reasons for the yellowing of grape leaves:

The growth and development of roots were affected. The leaves of the plants with physiological diseases were small, thin and yellow, and most of the roots turned black and yellow, and the root rot occurred seriously. The causes of root dysplasia are related to the excessive application of chemical fertilizer or immature organic fertilizer or overload hanging fruit.

The nutrient elements are not balanced. In the fertilization of grapes, fruit growers attach importance to the application of a large number of elements of nitrogen, phosphorus and potassium, and no or less application of medium and trace element fertilizers. Due to the unreasonable application of a large number of elements, there is an antagonistic effect among nutrient elements, which not only affects the absorption of nutrients by grapes, but also pollutes the soil.

The soil aggregate structure is not good and the permeability is poor. The growth of crop roots is inseparable from the air, and good soil ventilation conditions play an important role in root growth, nutrient release and soil microbial activity, while poor ventilation in consolidated soil will cause obstacles to root development, especially the development of capillary roots, which will affect the absorption of nutrients by roots, resulting in the deficiency of trace elements, which will show the symptoms of element deficiency in leaves.

Prevention and control measures of grape leaf yellowing:

adequate manuring. The combination of a large number of elements and trace elements, the combination of inorganic fertilizer and organic fertilizer, and the combination of chemical fertilizer and microbial fertilizer to realize total nutrient fertilization.

Spray foliar fertilizer. According to the situation, avoid flowering, regularly and irregularly spray foliar fertilizer to increase nutrition and improve tree potential.

Apply more soil conditioners. Create good rhizosphere conditions for root growth and development, improve soil ventilation, adjust soil PH value, and promote the rapid formation of soil aggregate structure.

The above is the introduction of grape leaf yellowing prevention and control measures, grape planting friends can refer to the above methods, combined with the actual planting situation, scientific prevention and control.

What is the reason for the yellowing of grape leaves, and how to solve the problem?

Grape leaf yellowing is a kind of grape physiological disease. Grape leaf yellowing brings great harm to grape growth, so what is the reason for grape leaf yellowing and how to solve it?

What is the reason for the yellowing of grape leaves?

The growth and development of roots were affected. The leaves of the plants with physiological diseases were small, thin and yellow, and most of the roots turned black and yellow, and the root rot occurred seriously. The causes of root dysplasia are related to the excessive application of chemical fertilizer or immature organic fertilizer or overload hanging fruit.

The nutrient elements are not balanced. In the fertilization of grapes, fruit growers attach importance to the application of a large number of elements of nitrogen, phosphorus and potassium, and no or less application of medium and trace element fertilizers. Due to the unreasonable application of a large number of elements, there is an antagonistic effect among nutrient elements, which not only affects the absorption of nutrients by grapes, but also pollutes the soil.

The soil aggregate structure is not good and the permeability is poor. The growth of crop roots is inseparable from the air, and good soil ventilation conditions play an important role in root growth, nutrient release and soil microbial activity, while poor ventilation in consolidated soil will cause obstacles to root development, especially the development of capillary roots, which will affect the absorption of nutrients by roots, resulting in the deficiency of trace elements, which will show the symptoms of element deficiency in leaves.

How to solve the yellowing of grape leaves?

adequate manuring. The combination of a large number of elements and trace elements, the combination of inorganic fertilizer and organic fertilizer, and the combination of chemical fertilizer and microbial fertilizer to realize total nutrient fertilization.

Spray foliar fertilizer. According to the situation, avoid flowering, regularly and irregularly spray foliar fertilizer to increase nutrition and improve tree potential.

Apply more soil conditioners. Create good rhizosphere conditions for root growth and development, improve soil ventilation, adjust soil pH value, and promote the rapid formation of soil aggregate structure.