1、Agronomic measures for better utilization of soil and fertilizer phosphates
From the agronomic measures such as the selection of the appropriate phosphate fertilizer type, adjusting fertilizer rates to soil tests and liming soils to an optimum pH level may be easily implemented by European farmers since lime and various phosphate fertilizer types are available.
2、Determination of Appropriate Rate and Mode of Lime Application on Acid Soils of Western Kenya: Targeting Small Scale Farmers
Ongoing research in the region has demonstrated the potential of using agricultural lime, inorganic fertilizers, and Minjingu rock phosphates to address soil acidity problem while at the same time promoting food production.
3、Fractionation and availability of phosphorus in acid soils of Hagereselam, Southern Ethiopia under different rates of lime
We used a sequential fractionation scheme to assess phosphorus fractions of acid soils of Southern Ethiopia. The study area called Hagereselam is characterized by high soil acidity, and the availability of P in the study area is relatively low.
4、LIME EFFECTIVENESS OF SOME FERTILIZERS IN A TROPICAL ACID ALFISOL
As such, this study sought to investigate the lime effectiveness of some P fertilizers (organic and inorganic) in an acid alfisol in relation to their ability to raise soil pH and enhance P release for sustainable soil productivity.
"Lime and Fertilizer Recommendations for Reclamation of Surface
Recommended fertilizer rates have been made on rather limited data and they are to be considered as the best available and may be revised without notice. These fertilizer rates are based on assumed "average" climatic conditions and for "average" spoils.
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Soil solution from plots receiving lime and fertilizer had increased Ca/Al and base cation/ aluminum (BC/Al) ratios above critical levels. The addition of herbicide alone caused increased soil solution Al and H+ concentrations and reduced Ca/Al ratios to critically low levels.
Water soluble phosphate fertilizers for crops grown in calcareous soils – an outdated paradigm for recycled phosphorus fertilizers?
The currently used commercial P compounds WSP and RP confirmed the requirement of water soluble P to nourish plants efficiently, as the fully water soluble WSP was the most efficient, and the sparingly water soluble RP the least efficient fertilizer on the calcareous soil (Fig. 5).
Effect of Lime and Flooding on Phosphorus Availability and Rice Growth on Two Acidic Lowland Soils
The current experiments show that the loss of soil‐water saturation may be associated with the inhibition of P absorption by excess soluble Al. By contrast, flooding decreased exchangeable Al to levels below the threshold for toxicity in rice.
Growth, nitrogen fixation, yield and kernel quality of peanut in response to lime, organic and inorganic fertilizer levels
All together 10 treatment combinations were laid out under two factor (fertilization levels and lime levels) factorial randomized complete block design with three replications.
Influence of Lime and Phosphorus Fertilizer on the Acid Properties of Soils and Soybean
The study was conducted to evaluate the influence of lime and Phosphorus fertilizer on yield and yield attributes of soybean in acid soil at Assosa north western Ethiopia during June 2012 to March of 2015. The crop was evaluated in terms of pod per plant, seed per pod, grain yield, hundred seed weight and straw yield.
The ratio of 10 grams of lime to water-soluble fertilizer depends on soil pH, crop requirements, and environmental conditions. Below are some basic guidelines and calculation methods:
I. Understand the Basic Properties of Lime and Water-Soluble Fertilizer
Lime (mainly calcium oxide, CaO) is an alkaline substance that neutralizes soil acidity, improves soil structure, and enhances fertility. Water-soluble fertilizers (hereafter referred to as "water-soluble fertilizers") are chemical fertilizers soluble in water, typically containing nitrogen (N), phosphorus (P), potassium (K), and other elements, providing rapid nutrient uptake for plants.
II. Determine Soil pH
Before fertilization, test the soil’s pH. Lime is suitable for neutral or slightly alkaline soils. Excessive lime in highly acidic soils can sharply lower the pH, harming plant growth. Conduct a soil test to confirm the exact pH before applying lime.
III. Consider Crop Requirements
Different crops thrive at varying pH levels. For example:
- Citrus trees prefer slightly acidic soil.
- Legumes thrive in mildly alkaline conditions.
Adjust lime dosage based on crop type and pH preferences.
IV. Environmental Factors
Climate, water availability, and fertilizer efficiency influence lime-to-fertilizer ratios. For example:
- In drought conditions, reduce lime to avoid salinization.
- In irrigated fields, increase lime slightly for better pH balance.
V. Calculate Lime-to-Fertilizer Ratio
Example: To adjust soil pH from 6.5 (neutral) to ~7 (mildly alkaline):
- Rule of thumb: 10 grams of lime requires ~100x water (1 liter) for pH adjustment.
- Note: This is an estimate; actual ratios may vary based on soil testing.
VI. Precautions
- Avoid Overapplication: Excess lime causes soil salinization, harming plants. Stick to recommended doses.
- Monitor pH: Regularly test soil pH after lime application.
- Combine Fertilizers: Use lime with other fertilizers (N, P, K) for optimal results.
- Proper Application:
- Evenly spread or furrow-apply lime; avoid direct root contact to prevent burning.
- Apply lime 1-2 weeks after other fertilizers for best absorption.
In practice, tailor lime and fertilizer ratios to local climate, soil type, and crop needs for scientific and effective results.
