Causes of strawberry diseases
1. Year after year of planting
Growers know continuous cropping is a problem for strawberries. So they use a lot of chemicals every year to treat and improve the soil. At the same time, these chemicals kill beneficial organisms in the soil.
2. Fertilizer
If growers apply raw fertilizer and green organic fertilizer or pour a lot of water after planting, it will cause seedlings or roots to burn. Therefore, growers should apply well-rotted organic fertilizer and water in advance. Microbial fertilizers should be used when watering to improve the soil and create a healthy environment for strawberry root growth.
3.Watering
When planting, growers need to water lightly (flooding with large water is prohibited) to avoid damaging the root system.
1. Before Planting
Dilute Trichoderma harzianum 20 times and soak the roots at 15 kg/ha. Do not soak the roots under high temperature or strong light. It is recommended to dry the roots before sowing them to protect the roots from bacteria and stimulate the growth of strawberry roots.
2. During Planting
When planting, use 30-45 kg of Trichoderma harzianum per hectare for hole sowing or mixing with organic fertilizers and then spreading or deep soaking. It is recommended to keep the soil moist after application so that the fungus can thrive better. Trichoderma harzianum can kill soil pathogenic bacteria, balance the soil microecological structure, and promote crop growth.
3. After Planting
7-10 days after planting, dilute Trichoderma harzianum 300 times and apply it through root watering or drip irrigation to replenish the number of strains and achieve the best state of the strains.
All of the above methods can prevent problems such as dead strawberry seedlings, weak seedlings, and continuous cropping that often occur during strawberry seedling planting.
At the same time, it can also improve the stress resistance of strawberries, promote growth, and promote later quality and yield of strawberries.
The effect of Trichoderma harzianum on strawberries
1. Promote root growth
After applying Trichoderma harzianum, the root system of the treatment group grew rapidly, the root system was strong, and other pathogenic infections were effectively controlled. The plants in the control group took root slowly, had weak root systems, and were susceptible to infection by other pathogenic bacteria.
2. Prevent and treat diseases
Powdery mildew is a common disease in strawberry cultivation and even vegetable cultivation. Spots of varying sizes appear on the leaves of strawberry plants. A layer of white powder forms on the back of the leaves, and the leaf edges shrink. In severe cases, the leaves will wither and the young fruits will wither. These have seriously affected the yield and quality of strawberries. Growers dilute Trichoderma harzianum 100 times and spray it on the leaves. After 12 hours of use, the control effect is shown. The white powder falls off and the leaves scatter. Plants are growing well.
3. Promote crop growth
Stolons are important nutritional organs of strawberries. After using Trichoderma harzianum, the plants grow rapidly and the stolons are stronger, providing more seedlings for later cuttings.
For reference only.