1、The physiological response of photosynthesis to nitrogen deficiency

Here, we summarized the physiological response of photosynthesis to N deficiency in leaf structure and N allocation within the leaf. In serious N stress, photosynthetic rate decreases for almost all plants.

2、Evidence, causes, and consequences of declining nitrogen availability

Intercalibration of isotopic records from leaves, tree rings, and lake sediments suggests that N availability in many terrestrial ecosystems has steadily declined since the beginning of the industrial era.

3、Effects of soil nitrogen (N) deficiency on photosynthetic N

Our results showed that soil N deficiency significantly decreased the leaf N concentration and photosynthesis ability of the two non-N-fixing trees, but it had less influence on two...

Effects of Nitrogen Deficiency on the Metabolism of Organic Acids and

In this study, rice (Oryza sativa L. ssp. Indica) variety "Huanghuazhan" was used as the experimental material, and three N levels (5 mM, 1 mM, and 0 mM NH 4 NO 3) were set by the hydroponic method for different levels of N treatment.

Effect of Nitrogen Fertilization on Tree Growth and Nutrient

The content of minerals in two layers of the soil, in leaves, and its influence on tree growth, and the content of chlorophyll in leaves were assessed. The experiments were carried out in three different cherry orchards.

The physiological response of photosynthesis to nitrogen deficiency

Here, we summarized the physiological response of photosynthesis to N deficiency in leaf structure and N allocation within the leaf. In serious N stress, photosynthetic rate decreases for almost all plants.

Imbalance in nitrogen and phosphorus allocation between tree roots and

Our findings suggest that N addition will likely lead to an imbalance between the N and P cycles in temperate forest ecosystems, due to the unequal allocation of N and P between tree roots and leaves. This imbalance may, in turn, have negative implications for the provision of ecosystem services.

Impacts of nitrogen emissions on ecosystems and human health: A mini

Increased inputs of reactive nitrogen (N) by fertiliser production cause adverse effects on terrestrial and aquatic ecosystems as well as human health, through impacts on air, soil and water quality.

Effects of soil nitrogen (N) deficiency on photosynthetic N

Our results showed that soil N deficiency significantly decreased the leaf N concentration and photosynthesis ability of the two non-N-fixing trees, but it had less influence on two N-fixing trees.

Nitrogen Deficiency

Nitrogen shortage reduces development, increases chlorosis (green to yellow leaf shade shift), and causes red and pink blotches on leaves, all of which restrict lateral bud initiation (from which leaves, stems, and branches develop).

As an important fruit tree, the healthy growth of cherry trees relies on adequate nutrition. Nitrogen, one of the three essential elements for plant growth, plays a critical role in the development, growth, and yield of cherry trees. nitrogen deficiency in cherry leaves not only hinders tree growth but also leads to a range of problems that can threaten the overall health of the tree. Below is a detailed analysis of the harm caused by nitrogen deficiency in cherry leaves, along with corresponding solutions.

1. Impact on Cherry Tree Growth

Nitrogen is a fundamental component of proteins and a macronutrient essential for plant growth. When cherry trees lack nitrogen, growth slows significantly. Leaves become smaller, paler, and exhibit prominent veins. Severe cases result in chlorosis (yellowing), which reduces photosynthetic efficiency and impairs water and nutrient absorption, exacerbating poor growth.

2. Reduced Flowering and Fruiting

Nitrogen is crucial for flower bud differentiation. With sufficient nitrogen, cherry trees produce abundant flower buds, laying the foundation for robust flowering and fruiting the following year. Conversely, nitrogen deficiency disrupts flower bud formation, leading to fewer or no flowers. This impacts current yields and creates a vicious cycle affecting future fruiting.

3. Decline in Fruit Quality and Yield

Nitrogen deficiency negatively impacts fruit quality. Cherry fruits may appear lighter in color, worsen in taste, and reduce nutritional value. Additionally, insufficient nitrogen lowers fruit set rates, resulting in decreased yields.

4. Physiological Issues in Cherry Trees

Nitrogen deficiency can also cause physiological problems such as poor root development and premature leaf aging. These issues weaken the tree’s overall health, reduce disease resistance, and increase susceptibility to pests and diseases.

5. Soil Degradation

Excessive long-term nitrogen fertilization can lead to soil acidification, disrupting soil structure and reducing water- and nutrient-holding capacity. Nitrogen may also react with other soil elements to form compounds detrimental to plant absorption, further deteriorating soil conditions.

Solutions

To address nitrogen deficiency in cherry leaves, the following measures are recommended:

1. Rational Fertilization: Adjust nitrogen application based on growth stages and soil conditions. Apply moderate nitrogen during early growth and flowering periods while avoiding over-fertilization to prevent soil contamination.

2. Organic Fertilizer Supplement: Incorporate organic fertilizers, which provide sustained nitrogen and nutrients, improve soil health, and enhance fertility alongside chemical fertilizers.

3. Adjusting Planting Density: Optimize planting density to improve light penetration and air circulation, boosting photosynthesis and respiration. Proper density reduces competition between trees, promoting healthy growth.

4. Enhanced Management: Maintain orchards by pruning dead or diseased branches, preventing pests and diseases, and strengthening disease resistance through timely interventions.

nitrogen deficiency in cherry leaves harms growth, yields, fruit quality, physiological functions, and soil health. Addressing this issue requires rational fertilization, organic supplements, optimized planting practices, and diligent management. Implementing these strategies can improve cherry tree growth, yield, and contribute to the sustainable development of the cherry industry.