1、Impacts of nitrogen (N), phosphorus (P), and potassium (K) fertilizers

Soil nutrient deficiency is one of the significant challenges in grain production, particularly nitrogen (N), phosphorus (P), and potassium (K). These deficiencies not only reduce crop yields but also cause associated environmental issues, such as soil structure deterioration and ecosystem services diminution.

2、Nitrogen, phosphorus, and potassium co‐limitation in terrestrial

Nitrogen, phosphorus, and potassium are essential elements for plant growth and are the primary nutrients in commercial fertilizers. However, the extent to which these nutrients individually limit plant growth is still unclear, as is the influence of their interactions.

3、Crop Nutrient Requirements and Advanced Fertilizer Management

Improving nutrient-use efficiency (NUE) and crop yield through improved nutrient management practices also ensures SDG 1 (no poverty), SDG 3 (good health and wellbeing), and SDG 15 (life on land).

Effect of nitrogen, phosphorus and potassium fertilization management

Rational fertilization is the main measure to improve crop yield, but there are differences in the optimal effects of nitrogen (N), phosphorus (P) and potassium (K) rationing exhibited by the same crop species in different regions and soil conditions.

Potassium nutrition of crops under varied regimes of nitrogen supply

In this paper we review K in crops under varied N regimes, including effects of N-K interaction on crop yields, and processes of N-K interaction such as K uptake, transport, recycling and reutilization within plants under different levels of N supply.

Agriculture Nutrient Management and Fertilizer

Most fertilizers that are commonly used in agriculture contain the three basic plant nutrients: nitrogen, phosphorus, and potassium. Some fertilizers also contain certain "micronutrients," such as zinc and other metals, that are necessary for plant growth.

Quick guide to fertilizing plants

Nitrogen, phosphorus, and potassium are the nutrients most likely to be deficient and should be supplemented with fertilizers for optimum plant growth. The best method for assessing nutrient availability in your garden is to do a soil test.

Sustainable options for fertilizer management in agriculture to prevent

Composts that have been developed from various waste materials, such as poultry farms, dairy farms, and other sources, have proven to be very rich in N, P, and K. For example, compost generated from dairy farm wastes can provide a value of 45,100, 7300, and 9100 mg/kg of N, P, and K, respectively.

Recent advances in the chemistry of nitrogen, phosphorus and potassium

This necessitates the study of the major mineral fertilizer elements (nitrogen (N), phosphorus (P), and potassium (K)), the forms in which they are applied to soil, and their chemistry/reactions in soil.

Nitrogen

Research carried out in South Asia suggests that further improvement in nutrient use efficiency will become possible by balanced use of nitrogen, phosphorus, and potassium fertilizers, and by rational use of organic manures in wheat systems.

In agricultural production, the rational use of fertilizers is key to improving crop yield and quality. not all crops are suitable for fertilizers containing nitrogen and potassium. Below is an analysis of crops that should avoid such fertilizers, along with the reasons:

1. Legum Crops: Crops like soybeans and mung beans require significant nitrogen, but excessive nitrogen can lead to excessive stem and leaf growth, hinder root development, and disrupt flower bud differentiation, ultimately reducing yields. legum crops should not use nitrogen-potassium fertilizers.

2. Root Vegetables: Crops such as potatoes and sweet potatoes have low nitrogen requirements. Excessive nitrogen promotes excessive root enlargement, increasing starch accumulation in tubers, which degrades quality. Thus, root vegetables should avoid nitrogen-potassium fertilizers.

3. Fruit Trees: While fruit trees like apples, pears, and peaches need some nitrogen, overapplication leads to rapid, uneven fruit growth, excessive shoot elongation, and excessive blooming. This diverts nutrients away from fruits, compromising quality and yield. Fruit trees should avoid nitrogen-potassium fertilizers.

4. Cucurbits: Crops like watermelon, melon, and cucumber require minimal nitrogen. Excessive nitrogen causes vigorous foliage growth, reducing fruit size and sugar content. It also promotes excessive vegetation, lowering fruit quality. Cucurbits should avoid nitrogen-potassium fertilizers.

5. Tobacco: Tobacco (flue-cured or sun-cured) requires limited nitrogen. Excess nitrogen leads to excessive foliage growth, reducing leaf quality and yield. It also promotes undesirable plant elongation. Tobacco should avoid nitrogen-potassium fertilizers.

6. Cereal Crops: Grains like wheat, corn, and rice need moderate nitrogen. Overapplication causes excessive foliage growth, reducing photosynthetic efficiency and grain filling. Cereals should avoid nitrogen-potassium fertilizers.

7. Commercial Crops: Crops like cotton and peanuts, while requiring some nitrogen, suffer from overapplication, which leads to excessive plant growth, poor fiber quality, and reduced yields. Commercial crops should avoid nitrogen-potassium fertilizers.

8. Medicinal Plants: Herbs such as ginseng and astragalus need nitrogen, but excess leads to excessive growth, diluting medicinal compounds and reducing efficacy. Medicinal plants should avoid nitrogen-potassium fertilizers.

9. Ornamental Plants: Flowers like chrysanthemums and roses require minimal nitrogen. Excess nitrogen causes excessive foliage growth, reducing aesthetic value. Ornamentals should avoid nitrogen-potassium fertilizers.

10. Vegetables: Crops like tomatoes and peppers, while needing some nitrogen, risk overapplication, which leads to excessive foliage growth, poor fruit quality, and reduced yields. Vegetables should avoid nitrogen-potassium fertilizers.

When selecting fertilizers, crop-specific growth characteristics and nutrient needs must be considered. For the above crops, alternative fertilizers or adjusted fertilization strategies should be used to ensure healthy growth and optimal quality.