Solution to yellowing and withering of blueberry leaves

Blueberry leaves are important organs for photosynthesis and synthesis of organic matter, and once a large number of yellowing leaves appear, it will seriously affect the growth and development of blueberries. Blueberry yellow leaf phenomenon is more serious, light fruit set rate is low, heavy tree weakness, branches and leaves die, even dead plants, to prevent blueberry yellow leaves, first of all to understand its reasons, let's take a look at the detailed introduction.

1. The reason for blueberry yellow leaves

1. Reasons for seedlings

The seedlings themselves are undernourished and the roots are poor. In the process of planting, because the roots are not broken quickly and the roots are covered with too thick soil, it will lead to poor root growth and lead to yellowing.

2. Improper soil

Blueberry has strict requirements for soil pH value. With the suitable growth soil pH value between 4.5 and 5.5, excessive acid and alkali are unfavorable for blueberry growth and development. In addition, when the soil organic matter content does not reach 5% or more, it is also unfavorable for blueberry growth.

3. Waterlogging

Low-lying plots prone to water logging, seriously affecting the growth and development of blueberry roots and the ability to absorb nutrients, a long time, leaves do not have enough nutrients and water, will appear yellowing phenomenon.

4. Underground pests

White grubs, mole crickets and other pests will harm blueberry roots, resulting in root damage, tree weakness, in addition to root rot, stem base will also lead to slow growth of plants, no new branches, no heart leaves, even the leaves are relatively small, yellow phenomenon.

5. Fertilizer damage Blueberry is a low-fertilizer crop. Excessive fertilizer application or improper fertilizer application position causes fertilizer damage, which also easily leads to blueberry yellowing.

II. Solutions

1. New branches of seedlings

To choose 2-3 years old, developed roots, 2-3 branches of healthy seedlings, planting to first break open the group eyes, group roots are relatively dry, while soaking while transplanting.

2. Soil improvement

Measure soil pH value before planting, apply sulfur powder or humic acid to adjust pH value, apply organic bacterial fertilizer or forest peat to improve local soil and increase soil organic matter.

3. Ridging cultivation

Gutters can be built. It can effectively reduce the occurrence of waterlogging and avoid blueberry yellowing caused by waterlogging.

4. Pest control

For the root system damage caused by various diseases and insect pests, which leads to leaf yellowing, humic acid foliar fertilizer +30% hymexyl + carbendazim + low-toxicity pesticide + plant auxin can be used for root irrigation to achieve triple effects of sterilization, insecticide and root promotion.

5, foliar fertilizer

Foliar fertilizer has the characteristics of high absorption and utilization rate and fast recovery, so it can be sprayed with fungicide + trace element water-soluble fertilizer to supplement medium and trace elements in the early stage of yellowing, so that the yellowed leaves gradually turn green.

The above is an introduction to the causes and solutions of blueberry leaf yellowing and drying. I hope it can help you. If you want to know more about it, please pay attention to us.