1、Effects of Nutrient Antagonism and Synergism on Yield and Fertilizer

In designing fertilizers with the right nutrient composition, antagonistic (negative) nutrient interactions should be minimized, whereas synergistic (positive) nutrient interactions should be maximized for optimal nutrient use efficiency. These actions require proper knowledge of possible positive and negative interactions between nutrients.

2、Role of calcium as a possible regulator of growth and nitrate nitrogen

Abstract As a crucial element for plants, calcium (Ca) is involved in both nitrogen (N) absorption and assimilation. Plants tend to exhibit lower nitrogen use efficiency (NUE) under Ca-deficient conditions. Improving NUE in apple production can reduce the negative effects of the excessive use of N fertilizer.

3、Effects of interaction between calcium and nitrogen fertilizers on dry

Effects of interaction between calcium rates and nitrogen rates had a significant impact on peanut yield. Increasing calcium fertilizer application was an important way to improve nitrogen use efficiency, which increased pod number and 100-pod weight and promoted stably high yield in peanut.

Increasing Calcium and Decreasing Nitrogen Fertilizers

Excessive nitrogen and insufficient calcium could significantly impact peanut yields. This study investigated the effects of nitrogen and calcium fertilizers on nutrient absorption, utilization, and yield; experiments were conducted using the peanut cultivar from Xianghua 2008 in a split-plot arrangement with two calcium fertilizer levels (Ca0: 0 and Ca1: 568 kg CaO ha−1) in the main plots ...

The effect of nitrogenous fertilizers on the calcium status of soil

Extract The results of an experiment, conducted over one cycle of a four-course rotation to study the effects of nine nitrogenous fertilizers on crops and soil, are described. All the crops gave fairly good responses to nitrogen but in no case was there a significant difference between the effects of the various nitrogenous fertilizers.

Effects of Nutrient Antagonism and Synergism on Yield and Fertilizer

In case of a significant effect of the fertilizer on the nutrient concentration, the nutrient concentration at the lowest and highest fertilizer input is given; otherwise the average content is given.

Nutrient Interactions & Antagonism

Many modern synthetic fertilizers primarily contain nitrates or other salt-based forms of nitrogen. The salts are the most common cause of tip burn, nutrient antagonism, and weak plant growth. The antagonistic action of nutrients shows how overdoses of certain elements can lockout or displace another element.

Role of calcium nutrition in plant Physiology: Advances in research and

In summary, calcium fertilizers play an essential role in mitigating the effects of acidic soils and improving agricultural yield. These fertilizers facilitate sustainable crop production in regions with acidic soils through their liming effects, improved nutrient availability, and enhanced soil structure.

Effects of Nutrient Antagonism and Synergism on Yield and Fertilizer

The effects of nitrogen and iron fertilization on growth, yield and fertilizer use efficiency of soybean in a Mediterranean-type soil. Field Crops Research 108 (2):126 –32.

Effects of Nutrient Antagonism and Synergism on Yield and

ABSTRACT Interaction among plant nutrients can yield antagonistic or synergistic outcomes that influence nutrient use efficiency. To provide insight on this phenomenon, peer-reviewed articles were selected that quantified the interaction effects of nutrients on crop yield levels. In total 94 articles were selected that described 117 interactions between all macro- and micronutrients for ...

The antagonistic effect between calcium and nitrogen fertilizers refers to the competitive absorption of calcium ions (Ca²⁺) and ammonium ions (NH₄⁺) from nitrogen fertilizers in the soil. This antagonism may impact plants' nitrogen uptake, subsequently affecting their growth and development. Calcium is an essential nutrient for plant growth, involved in cell wall construction, enzyme activity regulation, and signal transduction. Nitrogen fertilizers, meanwhile, are critical for plant growth, particularly for chlorophyll synthesis. the antagonism between calcium and nitrogen fertilizers holds significant practical implications for agricultural production.

The antagonistic effects between calcium and nitrogen fertilizers manifest in the following aspects:

1. Competitive Absorption: Both calcium and ammonium ions maintain concentration gradients in soil solutions. When present simultaneously, they compete for nutrient ions through absorption. Due to its larger ionic radius and stronger affinity, calcium tends to preferentially bind with soil cations, inhibiting the competitive absorption of ammonium ions.

2. Reduced Nitrogen Fertilizer Efficiency: The presence of calcium ions decreases ammonium ion concentrations in soil solutions, weakening plants' ability to absorb ammonium. This lowers intracellular ammonium content, reducing nitrogen utilization efficiency. Additionally, calcium ions may form insoluble complexes with ammonium ions, further diminishing their availability in soil solutions.

3. Impact on Plant Growth and Development: Calcium intake affects plants' nitrogen absorption and utilization, subsequently influencing growth. For example, reduced ammonium content due to calcium may impair nitrogen use efficiency. Calcium may also indirectly impact growth by altering cell wall formation, enzyme regulation, and signaling pathways.

4. Soil pH Alteration: Calcium ions reduce hydrogen ion concentrations in soil solutions, creating alkaline conditions. Such environments hinder ammonium absorption, leading to ammonium accumulation and reduced nitrogen availability. calcium reacts with soil organic matter to form precipitates like calcium carbonate, further lowering ammonium concentrations.

5. Soil Microbial Activity Disruption: Calcium ions interfere with soil microbial metabolism, affecting nutrient cycling and transformation. For instance, calcium suppresses the respiration of certain microorganisms, reducing their activity. It may also compete with enzymes produced by microbes, further inhibiting their function.

To mitigate the antagonistic effects between calcium and nitrogen fertilizers, the following measures can be adopted:

1. Rational Fertilization: Adjust the ratio and dosage of nitrogen and calcium fertilizers based on soil conditions and crop requirements. Maintaining a nitrogen-to-calcium ratio of approximately 1:1 ensures balanced nutrient supply.

2. Soil pH Adjustment: Apply lime or other alkaline materials to neutralize or slightly alkalinize the soil, reducing calcium's inhibitory effect on ammonium absorption. Alternatively, acidic substances like ammonium sulfate can increase soil ammonium concentrations, promoting nitrogen uptake.

3. Soil Environment Improvement: Enhance soil structure and organic matter content to boost nutrient cycling and transformation capacities. This reduces calcium's suppression of ammonium absorption and improves nitrogen fertilizer efficiency.

4. Optimized Irrigation: Use water-saving methods like drip or sprinkler irrigation to minimize water loss and dilution of soil ammonium concentrations, alleviating calcium's competitive effects.

5. Crop Variety Selection: Choose crops with tolerance to acidity, alkalinity, or shade to adapt to varying soil conditions, mitigating calcium's interference with nitrogen absorption.

addressing the antagonism between calcium and nitrogen fertilizers requires a holistic approach. By optimizing fertilization, adjusting soil pH, improving soil health, refining irrigation, and selecting suitable crops, this antagonism can be effectively alleviated. Such strategies enhance nitrogen fertilizer efficiency and promote healthy plant growth.