1、Calcium uptake and transport in rice during grain filling under

Calcium (Ca) enrichment in rice grain is crucial for ensuring grain yield and quality. Thus, it is vital to understand the transport pathways of Ca from the soil to grain.

2、Silicon–calcium fertilizer increased rice yield and quality by

Research showed that silicon-calcium fertilizer can improve the structure and texture of rice soil, increase soil fertility, thereby strengthening the development and absorptive capacity of...

3、Effects and potential of optimized fertilization practices for rice

Optimized fertilization in China has noticeable potential to alleviate agricultural non-point source pollution while ensuring rice yield.

Effects of Calcium Silicate Fertilization on Disease Intensity and

Effects of Calcium Silicate Fertilization on Disease Intensity and Yield and Quality of Rice Grain

Effects of Calcium Silicate Fertilization on Disease Intensity and

PDF | On Apr 8, 2021, Leandro José Dallagnol published Effects of Calcium Silicate Fertilization on Disease Intensity and Yield and Quality of Rice Grain | Find, read and cite all the...

Silicon–calcium fertilizer increased rice yield and quality by

Research showed that silicon-calcium fertilizer can improve the structure and texture of rice soil, increase soil fertility, thereby strengthening the development and absorptive capacity of rice roots, improving rice’s resistance to diseases and pests and stress tolerance, and providing a more ideal growth environment for rice 17.

Calcium

Taking into account the Ca/Mg ratio of input is therefore necessary for a strategy of phosphate fertilization of rice, on acidic soil, in the humid forest agroecology of the tropical zone.

Crop Guide: Rice Nutrition

Based on the site-specific nutrient management (SSNM) approach for fertilization of rice (IRRI 2006), a rice crop requires about 50 kg/ha of N fertilizer for each ton in additional grain yield.

Effects and potential of optimized fertilization practices for rice

The results indicated that 76.5% of all paddies in China are overfertilized regions under the current rice yields. Optimized fertilization practices were mainly adopted in central and eastern China regions with serious water pollution and excessive fertilization.

Silicon calcium fertilizer increased rice yield and quality by

Research showed that silicon-calcium fertilizer can improve the structure and texture of rice soil, increase soil fertility, thereby strengthening the development and absorptive capacity of...

In agricultural production, rational fertilization is critical for improving crop yields, enhancing quality, and boosting resistance to pests and diseases. As an essential microelement fertilizer, calcium has garnered significant attention in rice cultivation. Below is a detailed analysis of the necessity and mechanisms of calcium fertilization in rice production:

I. The Importance of Calcium Fertilizers for Rice Growth

1. Promoting Root Development: Calcium is a key component of various enzymes in plants, particularly those involved in phytohormone regulation. Appropriate calcium application enhances root system development, strengthens water and nutrient absorption, and improves overall plant health.
2. Improving Disease Resistance: Calcium fertilization increases rice’s resistance to diseases by stabilizing cell walls, enabling plants to better withstand external stressors such as pathogen invasions.
3. Enhancing Stress Resistance: Calcium also helps rice tolerate adverse conditions like drought and high temperatures. By activating key enzymes, calcium enables plants to adapt to harsh environments while maintaining normal growth.

II. Application Methods and Precautions for Calcium Fertilizers

1. Application Methods: Calcium can be applied via basal application (pre-planting), topdressing (during growth), or foliar spraying. The optimal method depends on the growth stage and soil conditions. For example, basal application during early or vigorous growth stages effectively replenishes soil calcium.
2. Dosage Control: Calcium dosage should be determined based on soil tests and crop requirements. Excessive use may lead to salt accumulation, disrupt soil pH balance, and hinder growth. Precise control is essential.
3. Integration with Other Fertilizers: Calcium should not be applied in isolation but combined with major nutrients like nitrogen (N), phosphorus (P), and potassium (K) to ensure balanced nutrition. Avoid mixing with aluminum-containing fertilizers to prevent aluminum toxicity.

III. Practical Cases of Calcium Fertilization in Rice Production

1. Case 1: Farmers in a region applied 5-10 kg/mu of calcium fertilizer basally before rice planting. Results showed stronger plants, vibrant green leaves,发达的根系, and improved disease resistance, with an 8% yield increase compared to untreated fields.
2. Case 2: In another area, foliar spraying of 10-15 kg/mu calcium fertilizer was used to address calcium deficiencies. Treated fields exhibited better stress resistance, growth vigor, and reduced disease incidence.

Calcium fertilization in rice cultivation improves yields, quality, disease resistance, and stress tolerance. effective application requires attention to methods, dosage, and integration with other nutrients. Scientifically sound calcium management can deliver significant economic and social benefits for rice production.