1、Irrigation and fertilization improved vegetative growth and fruit

Understanding the nutritional status and photosynthetic performance of orchard crops under different irrigation and fertilization regimes is crucial for optimizing vegetative growth and promoting fruit development.

2、Yield and Quality of Winter Jujube under Different Fertilizer

Based on our results, organic fertilization tended to improve the fruit quality indexes of winter jujube including contents of TSS and protein and TSS/TA ratio, and chemical fertilization at high applied rate would contribute to high fruit yield (Table 3).

3、Calcium maintained higher quality and enhanced resistance against

In this study, Chinese winter jujubes were sprayed with CaCl 2 (4%) 3 times at intervals of 2 hr on the day of refrigeration.

4、Soil Nutrient Status and Fertilization Techniques in Winter Jujube Orchard

Foliar spray fertilizer is an indispensable fertilization method for the top-dressing of winter jujube trees. Before flowering, flowering, young fruiting, and late growth, foliar spray of urea solution can increase the nitrogen deficiency of the soil and make the leaves darker.

5、Effects of winter irrigation on soil salinity and jujube growth

In this study, we investigated the effects of different irrigation methods (flood irrigation and drip irrigation) and winter irrigation quotas (450, 1350, 2250, 3150, 4050, and 4950 m 3 /hm 2) on soil salinity and plant growth in an arid region.

Application of medium and micro fertilizer in jujube tree in winter

The jujube tree has more flowering, less fruit setting, easy to crack fruit, light fruit flavor, poor coloring, and easy to be infected with jujube disease. It is closely related to the lack of trace elements in the plant such as calcium, magnesium, boron, zinc, iron, molybdenum, and manganese.

Solve the problem of jujube seedlings

The winter jujube seedlings are sprayed 2 times before harvesting, which is rich in nutrients and improves the drought resistance, cold resistance and stress resistance of jujube trees, which can effectively control the cracking fruit.

Effects of Different Fertilization on Soil Nutrient Content and

The effect of radial fertilization on the content of organic matter was the most significant,and the furrow fertilization was the second during the whole growth cycle of red jujube.

Yield and Quality of Winter Jujube under Different Fertilizer

It indicated that long-term fertilization could effectively promote the growth and development, increase yield, and significantly improve the fruit quality of pear jujube in the loess hilly...

Soil nutrient status and fertilization techniques in winter jujube garden

Foliar spray fertilizer is an indispensable fertilization method in the topdressing of winter jujube trees. Spraying urea solution on the foliar surface before flowering, flowering, young fruit and late growth can increase the nitrogen supply of the soil and deepen the color of the leaves.

Winter jujube is a fruit rich in nutritional value, containing abundant vitamins, minerals, and antioxidants. During its cultivation, proper soil management and fertilization are critical to ensuring quality and yield. The use of calcium fertilizers plays a significant role in this process. Below is an analysis of whether calcium fertilization is needed during the fruit enlargement stage of winter jujube:

I. The Role of Calcium Fertilizer in Winter Jujube Growth

1. Promoting Fruit Development: Calcium fertilizers effectively improve fruit setting rates, as calcium is essential for constructing plant cell walls, aiding fruit development and enlargement. Adequate calcium supplementation facilitates the transport of water and nutrients within fruits, resulting in fuller, more robust growth.

2. Enhancing Plant Stress Resistance: Calcium strengthens the disease resistance of winter jujube plants, reducing fruit drop caused by infections. It also improves root structure, promoting stronger, deeper roots that enhance water and nutrient absorption.

3. Improving Fruit Quality: Calcium enriches the texture and appearance of fruits, making winter jujube juicier and sweeter. Additionally, it increases sugar and vitamin content, boosting nutritional value.

II. Necessity of Calcium Fertilization During the Enlargement Stage

1. Meeting Nutrient Demands: Winter jujube requires substantial micronutrients, including calcium, during enlargement. Soil deficiencies can lead to yellowing leaves, fruit drop, and stunted growth. Timely calcium application is crucial.

2. Accelerating Fruit Enlargement: Calcium promotes cell division and elongation within fruits, speeding up growth. This directly impacts yield and quality.

3. Extending Harvest Period: Calcium delays fruit senescence, prolonging the harvest window. This not only increases economic returns but also stabilizes farmer income.

III. Rational Calcium Fertilization Methods and Precautions

1. Selecting Appropriate Calcium Sources: Choose calcium products (e.g., calcium carbonate, gypsum) based on soil conditions and crop needs.

2. Optimizing Application Rates: Dosage depends on soil tests and crop requirements. Generally, 5–10 kg of calcium carbonate per mu (0.067 hectare) is recommended, adjusted as needed.

3. Timing and Application Methods: Apply calcium fertilizer in the morning or evening, avoiding midday heat. Use deep tillage or furrow application to ensure thorough dissolution and absorption.

4. Post-Application Management: Monitor plants regularly for issues like nutrient imbalances. Maintain proper drainage and ventilation to prevent humidity-related diseases.

Calcium fertilization during the winter jujube enlargement stage is indispensable. Proper application methods and precautions maximize calcium’s benefits, fostering robust growth and superior fruit quality.