1、Optimal fertilizer application for Panax notoginseng and effect of soil water on root rot disease and saponin contents

These results indicate that the amount of nitrogen fertilizer used in these fields is excessive and that of potassium fertilizer is deficient. Higher soil moisture is an important factor that increases the severity of the root rot disease.

2、Roles of nitrogen, phosphorus, and potassium fertilizers in carbon sequestration in a Chinese agricultural ecosystem

To enhance cereal production and meet the escalating food demands of the increasingly affluent population in China, the application of nitrogen (N), phosphorus (P), and potassium (K) fertilizers to agricultural soils has risen significantly.

3、Effects of saline root environment (NaCl) on nitrate and potassium uptake kinetics for rose plants: a Michaelis–Menten modelling approach

The objective of this work was to quantify the influence of NaCl concentration on the uptake of nitrate and potassium by roses and develop a predictive model of uptake inhibition based on NaCl, NO 3 −, and K + concentration.

4、A plan for efficient use of nitrogen fertilizers

A global analysis finds that nitrogen fertilizers could be used more efficiently if their international distribution across croplands was altered — a measure that would also decrease nitrogen...

Tools and Strategies for Sustainable Nitrogen Fertilisation of Vegetable Crops

Use of these tools has been demonstrated to appreciably reduce fertiliser N application and N losses while maintaining production. The selection of tools to be used by a grower will be influenced by factors such as availability, the grower’s technical level, and economic considerations.

Effects of nitrogen, phosphorus and potassium fertilization on photosynthetic characteristics, yield and quality of Pulsatilla chinensis

The results showed that Pulsatilla chinensis had the greatest demand for nitrogen fertilizer, phosphate fertilizer had greater influence on photosynthetic characteristics, root growth and quality, and potassium fertilizer had more obvious influence on the growth of aboveground parts.

The effects of potassium fertilization on water

The main objective of this conceptual review is to confirm that adequate K management can be used as an important tool to alleviate the negative effects of water deficit on plant growth, yield-component formation, and yield.

The Effects of Mulch and Nitrogen Fertilizer on the Soil Environment of Crop Plants

Here, we will discuss the effects of mulch and nitrogen fertilizer on the soil environment of crop plants and analyze how mulch and nitrogen fertilizer affect nitrogen and water use efficiency and regulate root morphological and physiological traits in the rhizosphere.

Effects of saline root environment (NaCl) on nitrate and potassium uptake kinetics for rose plants: a Michaelis Menten modelling approach

Abstract Greenhouse-grown cut flower roses are often irrigated with moderately saline irrigation water. The salt/ballast ions are either present initially in poor quality raw water or reclaimed municipal water, or accumulated in greenhouse irrigation water that is captured and reused.

Effects of Nitrogen and Phosphorus Fertilization on Plant Growth and Nitrate Accumulation in Vegetables

As a result, addition of N fertilizer to soil was the major cause for vegetables increasing their nitrate contents. Effects of P fertilization on vegetable growth and nitrate accumulation were species and sampling-time dependant.

Roses are a popular ornamental plant, cherished for their vibrant flowers and rich fragrance. During the cultivation of roses, fertilization is a critical practice to enhance plant growth and quality. Nitrogen and potassium fertilizers are commonly used to promote healthy growth and flowering. This article explains whether these fertilizers can be applied via root irrigation and provides guidance on proper usage.

I. Overview of Nitrogen and Potassium Fertilizers for Roses

1. Nitrogen Fertilizers: Nitrogen is essential for photosynthesis, protein synthesis, and overall plant growth. For roses, moderate nitrogen fertilization promotes leaf development, increases foliage area, and enhances flower vibrancy.

2. Potassium Fertilizers: Potassium improves disease resistance, stress tolerance, and flower bud differentiation. It also aids water absorption, stabilizes cell membranes, and reduces susceptibility to pathogens.

3. Phosphorus Fertilizers: Phosphorus supports root development, flower bud formation, and photosynthetic efficiency. It strengthens根系 (root systems) and enhances pest/disease resilience.

II. Application Methods for Nitrogen and Potassium Fertilizers

1. Direct Application: Scatter or apply fertilizers in furrows for large-scale rose plantations. Ensure even distribution over soil surfaces or channels.

2. Drip Irrigation: Use drip systems to deliver fertilizer solutions precisely to roots. This method minimizes waste and environmental impact but requires specialized equipment and diluted fertilizer mixtures.

3. Root Irrigation: Dissolve fertilizers in water and apply directly to roots. Suitable for potted roses or small gardens. Caution: Control water volume and fertilizer concentration to avoid root burn or salt damage.

III. Precautions for Root Irrigation with Nitrogen and Potassium Fertilizers

1. Fertilizer Selection: Choose formulas tailored to rose needs (e.g., urea, potassium sulfate). Match nutrients to growth stages (e.g., higher nitrogen during vegetative growth, balanced ratios during flowering).

2. Concentration Control: Adjust fertilizer solutions to safe levels. Excessive concentrations risk root damage or osmotic stress.

3. Water Volume: Avoid over-irrigation to prevent root hypoxia or salt buildup. Adjust based on soil moisture and weather conditions.

4. Timing: Optimal times: morning or evening (minimal transpiration, reduced nutrient loss). Avoid hot midday periods to prevent root scalding.

5. Post-Application Care: Follow up with light watering to rinse soil. Monitor plants for stress signs (e.g., leaf discoloration) and address issues promptly.

Root irrigation with nitrogen and potassium fertilizers effectively supplies essential nutrients, promoting robust growth and abundant flowering in roses. Success depends on proper fertilizer selection, concentration, water management, timing, and post-care. Combined with other horticultural practices, this method enhances rose quality and yield.

Key Terms: Root irrigation, nitrogen fertilizer, potassium fertilizer, nutrient balance, rose cultivation.