Improving Coastal Saline Soil with Soil Structure Formula: A Case Study of Javanese Farmers

Improving saline soil in coastal agricultural land is a major challenge faced by farmers in Indonesia. High salinity due to seawater intrusion and excessive evaporation causes the soil to become compact, nutrient-poor, and difficult to cultivate. However, a group of farmers on the coast of Java successfully overcame this problem with the help of Soil Structure Improvement Formula from Biosolution. Through a soil microbiology-based approach, they were able to restore the productivity of previously degraded land. This article will thoroughly discuss the mechanism, application, and real results of this solution.

Why is Saline Soil a Serious Problem?

Saline soil is defined as soil with a high concentration of dissolved salts, typically with an EC (Electrical Conductivity) > 4 dS/m. In Indonesia, saline land is commonly found on the northern coast of Java, such as in Indramayu, Cirebon, and Demak. The root causes are a combination of poor irrigation, limited drainage, and rising sea levels. As a result, salt accumulates in the root zone, inhibiting water and nutrient absorption. Rice, secondary crops, and vegetables become stunted, leaves turn yellow, and plants may even die. Data from the Ministry of Agriculture (2019) shows that around 440,000 hectares of rice fields in Indonesia are affected by salinity. Without treatment, productivity can drop by up to 50%.

Soil Structure Improvement Formula: A Microbiological Solution for Saline Soil

Soil Structure Improvement Formula is an innovative product from Biosolution specifically designed to improve damaged and marginal soils, including saline soil. This product contains three superior microbes that work synergistically:

• Azotobacter sp.: A free-living nitrogen-fixing bacterium that also produces exopolysaccharides (EPS). EPS acts as a glue for soil particles, forming micro-aggregates that increase porosity and aeration.
• Azospirillum sp.: In addition to fixing N₂, this bacterium produces plant growth hormones (IAA, gibberellins) that stimulate root development, helping plants survive in saline conditions.
• Bacillus megaterium: A phosphate and potassium solubilizer, converting bound forms into plant-available nutrients. Phosphorus is important for energy and cell division, while potassium plays a role in osmoregulation against salt stress.

The main mechanism of this product is the formation of stable soil aggregates through EPS, making the soil loose, improving drainage, and allowing salt to be more easily leached during rain or irrigation. Additionally, increased Cation Exchange Capacity (CEC) enables the soil to retain more nutrients, reducing the toxic effects of Na⁺ ions.

Case Study: Farmers in a Coastal Village, Java

Mr. Rahmat, a farmer in Pesisir Village, Indramayu Regency, manages 2 hectares of land that has experienced declining rice yields due to salinity over the past 3 years. The soil EC reached 5.2 dS/m, far above the rice tolerance threshold (2 dS/m). Rice variety IR64 only produced 3 tons of GKP per hectare, whereas the potential was 6 tons. He tried various methods, including liming, salt leaching, and applying organic matter, but results were not optimal.

In the November 2024 planting season, Mr. Rahmat used Soil Structure Improvement Formula at a dose of 10 ml per liter of water, applied by drenching the soil during land preparation. The application was repeated every 30 days, for a total of 3 times per season. He also added 2 tons/ha of manure to support microbial activity. The results were surprising: at the first harvest, rice production increased to 5.2 tons GKP/ha, a 73% increase from before. Soil EC dropped to 3.1 dS/m. Plants appeared greener, had more roots, and grains were fuller.

In the second planting season (March 2025), Mr. Rahmat continued routine applications. Soil EC further decreased to 2.4 dS/m, and production reached 6.1 tons GKP/ha. The land is now productive again. This success was followed by 15 other farmers in the village who are members of a farmer group. They reported average yield increases of 40-70% for rice and chili.

Application Guide for Soil Structure Improvement Formula

For optimal results, follow this application guide:

Dosage and Application Method

• Dosage: 10 ml of product per liter of water.
• Method: Drench the root zone or spray the soil during land preparation.
• Frequency: Every 30 days, 3 times per planting season.
• Best Time: Early rainy season or immediately after tillage, so microbes can adapt quickly.

Additional Tips

1. Ensure the soil is moist before application to activate microbes.
2. Avoid mixing with chemical pesticides or fungicides simultaneously, as they can inhibit bacterial growth.
3. Combine with organic matter (manure, compost) as an energy source for microbes.
4. Provide adequate irrigation to help leach salt and distribute microbes.

Long-Term Benefits for Coastal Land

Regular use of Soil Structure Improvement Formula provides sustainable benefits:

• Improves Soil Structure: Soil aggregation increases, porosity improves, allowing roots to grow optimally and water to infiltrate easily.
• Increases Water Holding Capacity: Soil can retain more water, reducing irrigation frequency.
• Improves CEC and Nutrient Availability: CEC increases, nutrients such as N, P, K become more available, and toxic elements (Na) are more easily leached.
• Increases Productivity of Marginal Land: Previously unproductive land can yield decent harvests again.

Data from field trials show that after 3 seasons of application, soil EC can decrease by up to 50% and crop yields increase 2-3 times. This proves that a microbiological approach is an effective and environmentally friendly solution for improving saline soil in coastal agricultural land.

Conclusion

Soil salinity is no longer an unsolvable problem. By utilizing microbiological technology such as Soil Structure Improvement Formula from Biosolution, coastal farmers can gradually restore their land's productivity. The case study of Mr. Rahmat in Java shows that routine application of Azotobacter sp., Azospirillum sp., and Bacillus megaterium can reduce salinity, improve soil structure, and significantly increase crop yields. If you face a similar problem, do not hesitate to try this solution. For further consultation, contact the Biosolution team via WhatsApp or see the product Soil Structure Improvement Formula for complete information. Also read related articles on marginal land management and saline soil solutions.