【Knowledge Expansion】Yishizhuang Tells You How to Fertilize in Autumn and Winter

Why Fertilize in Autumn and Winter?

High Fertilizer Utilization Rate

In winter and spring, the temperature is low, and the decomposition of organic fertilizers is slow. When organic fertilizers are applied during this period, they cannot fully exert their effects. By the time the fertilizers are fully decomposed and their fertilizing effects are realized, it often causes the secondary growth and development of the new shoots of fruit trees, which has an adverse impact on the flower bud differentiation and fruit setting rate of fruit trees. Autumn is a period of nutrient accumulation for fruit trees. The aboveground part basically stops growing, while the photosynthesis of the leaves is still vigorous, which is conducive to the accumulation of more nutrients in the leaves and their transportation to the stems and branches.

In autumn, the soil temperature is relatively high, and the soil moisture condition is good, which is beneficial to the activities of soil microorganisms. The applied organic fertilizers, microbial bacterial fertilizers, medium and trace element fertilizers, and inorganic fertilizers decompose quickly and are easily absorbed and utilized by the roots of fruit trees. Experimental data show that fertilizing in autumn can increase the fertilizer efficiency of nitrogen, phosphorus, potassium, calcium, and magnesium by 1 time, 5 times, 3 times, 2 times, and 2 times respectively.

Improve the Root Growth Environment and Enhance the Stress Resistance of the Tree

Combining autumn fertilization with deep plowing of the soil can increase the soil porosity, optimize the soil structure, improve the soil permeability conditions, make the soil loose, which is conducive to soil moisture retention and water storage, prevent drought in winter and spring, and also increase the soil temperature and prevent root freezing damage.

In summary, it can promote the vigorous growth of the tree, stimulate endogenous activity, and improve stress resistance such as drought resistance, waterlogging resistance, and freezing resistance.

Conducive to the Accumulation and Reserve of Nutrients

It is used for the budding, flowering, and fruit setting of fruit trees in the coming year, and the fruit setting rate is high, and the fruits are large.

The nutrients consumed by fruit trees from the early spring budding to flowering and fruit setting mainly come from the nutrients stored in the tree body in the previous year. The period from the fruit harvest to before the leaves fall is the best period for nutrient accumulation. Applying base fertilizer in autumn can increase the nutrient reserve of the tree body.
Autumn is the last growth peak period of the roots of fruit trees in a year. Their life activities are vigorous, and the ability to absorb nutrients is strong, which is also conducive to delaying the aging of leaves, enhancing the photosynthetic capacity of autumn leaves, and increasing the nutrient reserve of the tree body.

Conducive to the Healing of Damaged Roots Caused by Fertilization

Promote the Growth of New Roots. (The root growth of fruit trees is still vigorous after fruit harvesting)

Autumn is the vigorous growth period of the roots of fruit trees. At this time, the small damaged roots caused by fertilization can heal quickly, and new roots can be quickly promoted, thus increasing the number of absorbing roots, expanding the absorption area of nutrient elements, and greatly improving the utilization rate of fertilizers.

Conducive to Coordinating Vegetative Growth and Reproductive Growth

That is, after the quick - acting nutrients in the fertilizer are absorbed, they can greatly enhance the function of autumn leaves, increase nutrient accumulation, make the flower buds plump, germinate early in spring of the coming year, bloom neatly, the spring shoots grow vigorously with a large growth amount, which is conducive to maintaining a strong tree vigor for high - quality and high - yield production; and the slow - acting nutrients are decomposed through long - term  in the soil and are easily absorbed and utilized in spring, which strengthens the late development of spring shoots, improves the quality of medium and short branches, and can stop growing in a timely manner, creating conditions for flower bud differentiation.

How to Fertilize Tea in Autumn and Winter

The function of the base fertilizer in a tea garden is to provide sufficient nutrients that can be slowly decomposed to ensure the nutrients required for the root activities of tea trees after they enter winter, and also to provide nutrients for the germination of tea buds in the coming year.

Timely fertilization is conducive to the normal development of overwintering buds, as well as the root growth and cold resistance for winter. Therefore, the base fertilizer should be applied early. After entering autumn and winter, as the temperature drops, the aboveground part of the tea tree gradually enters a dormant state, and the roots begin to be active. However, if the temperature is too low, the root growth also slows down. Therefore, applying the base fertilizer early can promote the roots to absorb nutrients

There should be a variety of fertilizer varieties. Not only nitrogen fertilizer should be applied, but also phosphorus and potassium fertilizers, medium and trace element fertilizers such as magnesium, sulfur, copper, and zinc, as well as organic fertilizers, etc., to meet the needs of tea trees for various nutrients and continuously improve the soil fertility level.
In the tea areas in the middle and lower reaches of the Yangtze River, it is required to apply the fertilizer between the beginning of September and the end of October; the tea areas in the north of the Yangtze River can start applying it as early as the end of August and finish applying it by the beginning of October; while the tea areas in the south can delay the application until the end of September and end it by the end of November.

Yishizhuang Recommended Fertilization Package:

Yishizhuang 38% Tea Formula Fertilizer + Yishizhuang Organic Fertilizer

Demonstration of Application Effects in Jiangxi

How to Fertilize Grapes in Autumn and Winter

The base fertilizer is mainly organic fertilizer, and it is generally best to apply it after the fruit is harvested and before the soil freezes. Applying it appropriately early is conducive to the decomposition of organic fertilizers and the healing of wounds, which is helpful for restoring the tree vigor, improving cold resistance and drought resistance, and laying a foundation for the root growth, flower bud differentiation, and new shoot growth in the next stage.
Precautions for Base Fertilizer:

1.Use thoroughly decomposed organic fertilizers, biological bacterial organic fertilizers, and biological bacterial agents;

2.Do not use flush fertilizers containing trace elements;

3.Select and use acidic or alkaline fertilizers according to the characteristics of the soil;

4.Use organic calcium fertilizers that can adjust the soil acidity and alkalinity;

5.Use seaweed fertilizers, chitin fertilizers, amino acid fertilizers, and humic acid fertilizers with the function of soil repair.

6.Integrate fertilizers and pesticides. While fertilizing, kill harmful bacteria and underground pests in the soil to reduce the occurrence base of diseases and pests in the coming year.

Yishizhuang Recommended Fertilization Package:

Xiyangyang Bio - Organic Fertilizer + Yishizhuang 46% Potassium Sulfate Compound Fertilizer

Demonstration of Application Effects in Hubei