Effective Calcium Fertilization for Soybeans

1、The effect of calcium fertilization and liming on the soil improvement and grain yield of winter wheat, corn and soybean

Application of calcium fertilizer (Njival Ca) was to amend common properties of acid soil, as well as its productive ability. Its application into the soil increased soil pH by 0.69 in water and by 1.05 in KCl. Humus content increased relatively by 8 and 16%, and total nitrogen by 7.5 and 27% for soybean and corn trial, respectively.

The effect of calcium fertilization and liming on the soil improvement and grain yield of winter wheat, corn and soybean

2、Mineral Nutrition Of Soybeans

Soybeans harvested from solution cultures with wide ranges of calcium, potassium, and magnesium in the solution, had a much smaller range in total calcium: 1 to 300 p.p.m. in substrate-produced plants, with 0.5 to 1.5 per cent calcium in the leaf and 0.3 to 1.4 per cent in the stem (Hashimoto, 1955b).

3、The effect of fertilization on yield components and quality parameters of soybeans [(Glycine max (L.) Merr.] seeds

Soybean seeds from higher yielded fertilization treatments have significantly less content of isoflavones. Split application of Humic complet is effective method for improving yield of soybean seeds while maintaining the composition of protein oil and fibre.

The effect of fertilization on yield components and quality parameters of soybeans [(Glycine max (L.) Merr.] seeds

4、"Foliar Fertilization of Soybeans" by Kenneth L. Wells, Dennis B. Egli et al.

This results in nutrients being redistributed from leaves to seeds and a reduction in rate of photosynthesis. Consequently, studies were conducted to evaluate methods of foliar fertilization in an attempt to maintain photosynthetic rate and nutrient supply during seed filling, the objective being to increase yields.

"Foliar Fertilization of Soybeans" by Kenneth L. Wells, Dennis B. Egli et al.

5、Foliar Fertilization for Sustainable Crop Production

Calcium sprays are very effective on improving the quality of fruits (Kadir 2004). Trees (apple Malus domestica graft) were given one to eight sprays at 8.971 kg ha −1.

Foliar Fertilization for Sustainable Crop Production

The importance of soybean production worldwide

The dual inoculation of Bradyrhizobium – Pseudomonas (biological fertilization) with the addition of triple superphosphate (P 2 O 5) (chemical fertilization) was the most effective treatment on soybean growth, yield (12 and 38% increase compared with the single use of P 2 O 5), and yield components.

Foliar Fertilization of Crop Plants: Journal of Plant Nutrition: Vol 32, No 6

Soil application method is more common and most effective for nutrients, which required in higher amounts. However, under certain circumstances, foliar fertilization is more economic and effective. Foliar symptoms, soil and plant tissue tests, and crop growth responses are principal nutrient disorder diagnostic techniques.

Pre

The results showed that P fertilizer had a significant effect on grain yield of soybean. Phosphorus application at the rate of 58 kg P2O5 ha-1 gave the highest grain yield of soybean when grown before rice (365 kg ha-1) and after rice (757 kg ha-1).

Phosphate fertilization strategies for soybean production after conversion of a degraded pastureland to a no

Soil-P status improved by establishing no-till and P fertilization in crop furrows. Source with high soluble P had the best effect on soybean yield in weathered soil. P application to the cover crop is a strategy that should be encouraged.

THE EFFECT OF FERTILIZATION ON YIELD COMPONENTS AND QUALITY PARAMETERS OF SOYBEANS [ (GLYCINE MAX (L.) MERR.] SEEDS

Soybeans are a globally important source of oil, protein, and fiber. During their growth, soybeans require significant amounts of calcium. Calcium is not only crucial for healthy soybean development but also affects yield and quality. proper calcium fertilization plays a vital role in improving soybean productivity and quality.

1. Understanding Soybeans' Calcium Needs

Soybeans absorb calcium primarily through their roots in the form of calcium ions, while also synthesizing some calcium within the plant. Calcium serves multiple functions during soybean growth, such as promoting root development, enhancing stress resistance, and improving leaf structure. Adequate calcium fertilization can effectively increase soybean yield and quality.

2. Choosing the Right Type of Calcium Fertilizer

Calcium Source: Calcium fertilizers often exist as calcium salts. Common sources include gypsum (calcium sulfate), calcium chloride, and calcium nitrate. Gypsum and calcium chloride are widely used due to their high absorbability by plants.
Fertilizer Form: Calcium fertilizers come in various forms, such as granular, powdered, or liquid. Selecting an appropriate form based on soybean growth habits and soil conditions can improve calcium utilization efficiency.
Concentration: The effectiveness of calcium fertilizers depends on concentration. Both excessively high or low concentrations may hinder calcium absorption. Thus, concentration control is critical during application.

3. Methods of Applying Calcium Fertilizers

Soil Application: Evenly spread calcium fertilizer over the soybean planting area and incorporate it into the soil via deep tillage. This method is simple but requires caution to avoid excessive application, which may lead to soil salinization.
Foliar Spraying: Dilute the calcium fertilizer and spray it onto soybean leaves using a foliar sprayer. This approach rapidly increases leaf calcium content with minimal impact on the soil.
Root-Zone Application: Apply calcium fertilizer by trenching near the soybean roots, then cover with soil. This method enhances calcium absorption efficiency but is more labor-intensive.

4. Dosage of Calcium Fertilizers

Adjust Based on Soil Conditions: Soil pH, texture, and organic matter content influence calcium requirements. Dosage should be adjusted according to specific soil properties.
Follow Recommended Rates: Different calcium fertilizers have varying recommended application rates. Adhere to product guidelines to avoid waste or negative effects from overapplication.

5. Combining Calcium Fertilizers with Other Nutrients

With Nitrogen Fertilizers: Nitrogen promotes soybean growth, while calcium addresses deficiencies. Combining them supports healthy plant development.
With Phosphorus Fertilizers: Phosphorus enhances root growth and nutrient uptake, complementing calcium’s role in soybean health.
With Potassium Fertilizers: Potassium regulates internal pH balance, while calcium improves quality. Together, they further optimize soybean performance.

6. Precautions

Avoid Overapplication: Excessive calcium can cause soil salinization, harming soybean growth. Control dosage strictly.
Environmental Protection: Calcium fertilizers may impact soil ecosystems. Prioritize eco-friendly practices to minimize pollution.
Cost-Effectiveness: While calcium improves yield and quality, balance benefits against application costs. Choose the most efficient methods for your context.

calcium fertilization is a critical practice for soybean cultivation. By selecting appropriate fertilizers, application methods, and dosages, farmers can effectively meet soybean calcium needs, promote healthy growth, and enhance productivity and quality. careful consideration of soil, environmental, and economic factors ensures optimal results.