1、Soil nutrient deficiency decreases the postharvest quality

Therefore, in some tea gardens, tea plants are grown under natural conditions with almost no fertilizer applications (Ruan, 2019). However, the long-term cultivation without fertilizers will lead to insufficient soil mineral nutrient contents in these tea gardens (Yang et al., 2018).

2、Fertilizer Effects on the Nitrogen Isotope Composition of Soil and

The nitrogen-stable isotopes of plants can be used to verify the source of fertilizers, but the fertilizer uptake patterns in tea (Camellia sinensis) plants are unclear.

3、Nitrogen absorption by field

The present field experiment was conducted to investigate whether 15 N is taken up by tea (Camellia sinensis L.) plants in winter dormancy in the absence of active shoot growth and utilization in young spring shoots.

Nitrogen absorption by field

Abstract mation of nitrogen uptake by subtropi-cal, ever-green broad-leaf plants at cold temperatures of winter is very limited. The present field experiment was conducted to investigate whether 15N is taken up by tea (Camel

Nitrogen transport and assimilation in tea plant (Camellia

To achieve higher yields, excessive amounts of N fertilizers mainly in the form of urea have been applied in tea plantations where N fertilizer is prone to convert to nitrate and be lost by leaching in the acid soils. This usually results in elevated costs and environmental pollution.

Why Do Camellia Leaves Fall Off? Experts Weigh In on This Mysterious

By understanding the causes of camellia leaf drop and implementing the appropriate preventive measures, you can ensure your camellia thrives for years to come. Remember, a little care and attention can go a long way in maintaining the health and beauty of your beloved camellia plant.

Transform Your Garden: Discover 'Why Is My Camellia Dropping Leaves

A lack of nutrients, particularly nitrogen, can lead to leaf drop. Use a balanced fertilizer specifically formulated for acid-loving plants, such as camellias, azaleas, and rhododendrons.

Thermo Condition Determines the Uptake of Autumn and Winter Applied

The results showed that application of N fertilizer in October relative to other later months most significantly improves the accumulation of plant N reserves and consequently contributes more significantly to the early spring tea.

Fertilizer Effects on the Nitrogen Isotope Composition of Soil and

The nitrogen-stable isotopes of plants can be used to verify the source of fertilizers, but the fertilizer uptake patterns in tea (Camellia sinensis) plants are unclear. In this study,...

Fertilizer Effects on the Nitrogen Isotope Composition of Soil and

The nitrogen-stable isotopes of plants can be used to verify the source of fertilizers, but the fertilizer uptake patterns in tea (Camellia sinensis) plants are unclear. In this study, potted tea plants were treated with three types of organic fertilizers (OFs), urea, and a control.

Does the lack of nitrogen fertilizer in camellia cause winter leaf drop and potential death? This question pertains to plant growth requirements and fertilization principles. Nitrogen fertilizer is one of the essential nutrients during plant growth, playing a crucial role in promoting development and enhancing disease resistance. improper or excessive application can lead to various issues.

Firstly, it's important to note that camellia prefers acidic soil and has specific pH requirements. When planting camellia in northern regions, where the soil tends to be alkaline, adding acidic fertilizers becomes necessary to adjust the soil's pH. Since nitrogen fertilizer is the primary source of nitrogen for plant growth, its rational application is vital for camellia health.

Regarding the issue of winter leaf drop due to nitrogen deficiency in camellia, we can analyze from the following aspects:

1. Role of Nitrogen Fertilizer: As an essential nutrient, nitrogen promotes cell division and elongation, increases chlorophyll content, and enhances photosynthetic efficiency. For camellia, appropriate nitrogen levels support robust growth and flowering, improving ornamental value.

2. Symptoms of Deficiency: Signs of nitrogen shortage include smaller, thinner leaves with faded color; yellowing at leaf tips and edges; slow new leaf growth coupled with gradual old leaf shedding; reduced flower quantity, paler colors, and smaller petals; overall stunted growth and weakened resilience.

3. Causes of Winter Leaf Drop: In winter, low temperatures prompt camellia to enter dormancy, slowing metabolism and growth. Prolonged nitrogen deficiency can inhibit growth, disrupt photosynthesis, and nutrient synthesis, affecting the plant's overall health.

4. Fertilization Recommendations: To prevent winter leaf drop, consider:

   • Rational Application: Increase nitrogen during active growth periods (spring/summer), while reducing it in winter to avoid disruption.
   • Balanced Fertilization: Ensure a mix of nitrogen, phosphorus, and potassium for comprehensive nutrition, avoiding over-reliance on nitrogen.
   • Organic-Inorganic Combination: Incorporate organic fertilizers to enrich soil structure and micronutrients, enhancing disease resistance.
   • Timely Top-Dressing: Supplement nutrients during peak growth phases, but control amounts to prevent excess.

5. Prevention and Treatment: Addressing nitrogen-deficiency-induced leaf drop involves:

   • Enhanced Management: Maintain proper watering and ventilation, promptly removing dead foliage to reduce pest/disease risks.
   • Pruning: Trim affected branches, removing weak, crossing, or overcrowded limbs to improve light and air circulation.
   • Chemical Intervention: For severe cases, apply high-nitrogen compounds or urea solutions as directed, ensuring suitability for camellia.

camellia's winter leaf drop due to nitrogen deficiency is a multifaceted issue requiring consideration of multiple factors. Through rational fertilization and management practices, this problem can be effectively prevented and resolved, safeguarding the healthy growth of the plant.