1、The effects of potassium fertilization on water

By using this method, it was possible to demonstrate the extent of several crop (winter wheat, spring triticale, maize, sugar beet) responses to the K supply. Yield increases resulting from K application mostly appeared under conditions of mild water deficit.

2、Nutrient Cycling: Potassium Solubilization by Microorganisms and Improvement of Crop Growth

Potassium level has declined in different kind of soils over the years due to intensive cultivation and imbalanced fertilizer application. Therefore, application of potassium fertilizer to these soils gives positive response.

3、Potassium release and fixation as a function of fertilizer application rate and soil parent material

In this study, release and fixation rates of K (kg ha − 1 yr − 1) were estimated in five long-term field experiments located on varying parent materials in South and Central Sweden, each having an array of K fertilizer application rates.

Long

Potassium deficiency has appeared in 40% of the agricultural land in south China according to the National Soil Survey Office (1998), and the application of fertilizer K has markedly increased grain yields in North China (Niu et al., 2011, He et al., 2012, Tan et al., 2012).

Potassium Management for Improving Growth and Grain Yield of Maize (Zea mays L.) under Moisture Stress Condition

Potassium (K) fertilizer management is beneficial for improving growth, yield and yield components of field crops under moisture stress condition in semiarid climates.

Potassium Release Kinetics and Water Retention of Controlled

It was found that the CRF hydrogels increased the water retention of the soil. After 30 days, soil containing the PVA-, PVA/CS- and CS-hydrogels showed the water retention capacities of 25%, 10% and 4%, respectively. While the soil without the CRF hydrogel had already given off most of the water.

Purification and rapid dissolution of potassium sulfate in aqueous solutions

In this study, the purification and rapid dissolution of potassium salt (K 2 SO 4) separated from potassium brine deposits collected from Lop Nur basin of China (referred to as LN K 2 SO 4) were studied for utilization in agricultural farming as a potash fertilizer.

Increased rate of potassium fertilizer at the time of heading enhances the quality of direct seeded rice

Potassium (K) is not easily assimilated into organic matter but helps to improve rice quality. Paddy yield and its quality depend on the correct time of fertilization and harvesting (days after flowering) in the field.

Potassium fertilization: paradox or K management dilemma?

In 2014, Khan et al. presented evidence that soil exchangeable K (Exch-K) increases over time without addition of potassium (K) to the soil despite the removal of K in crops on a soil rich in montmorillonite and illite. The authors term this behavior ‘The potassium paradox’.

Potassium fertilizer via hydrothermal alteration of K

First, the inherent solubility of potassium salts questions their efficacy in weathered soils. Second, long-distance transportation leaves unsolved the problems of limited local supplies and infrastructure, freight-related CO 2 emissions and cost of the fertilizer for the end user.

The optimal timing for applying potassium fertilizer after dissolving it in water depends on multiple factors, including soil type, crop species, climatic conditions, and the purpose of fertilization. Below are some recommendations and guiding principles:

1. Soil Type: Different soils have varying capacities to retain and supply potassium. In sandy soils, potassium is more readily absorbed by plants. For such soils, consider adding potassium fertilizer during irrigation.

2. Crop Species: Crops like fruits and vegetables require higher amounts of potassium. For these crops, apply potassium fertilizer cautiously to avoid overuse.

3. Climatic Conditions: In dry or hot weather, potassium may leach faster, requiring more frequent applications. In humid or cool conditions, plant absorption of potassium may decrease, but regular fertilization is still necessary.

4. Fertilization Goals:

   • To boost crop yields, apply potassium fertilizer in multiple stages during the growing season.
   • To improve soil structure, apply it shortly before or after planting.

5. Application Method: Potassium fertilizer is typically dissolved in water. Follow the instructions on the fertilizer packaging to dissolve the appropriate amount in water and distribute it evenly across the soil.

6. Timing: The best time to fertilize is during the morning or evening when plants are resting. This reduces evaporation losses and ensures efficient absorption.

7. Dosage: Adjust the amount of potassium based on crop needs and soil type. Excessive potassium can lead to salt buildup, harming plant growth.

8. Soil Testing: Conduct a soil test before fertilizing to determine the existing potassium levels and availability. This helps determine the ideal frequency and dosage.

9. Balancing Nutrients: Use potassium fertilizer in combination with other essential nutrients (e.g., nitrogen, phosphorus, calcium). Overemphasis on potassium may cause deficiencies in other nutrients.

10. Preventing Root Burn: Mixing potassium fertilizer with acidic substances can cause root burn. Avoid direct contact between the fertilizer solution and exposed roots by applying it away from the soil surface.

the optimal timing for applying dissolved potassium fertilizer depends on soil, crops, climate, goals, and testing results. To achieve the best results, tailor your fertilization plan to these factors, follow product guidelines, and avoid overapplication or root damage.