Background Magnesium (Mg), an essential secondary

The gap

Evidence profile

Sourced from the recommendations and stated research gap and abstract of the source papers, classified as general, drawn from work published between 2025 and 2026, spanning 3 journals. Those papers have been cited 4 times in total.

Supporting evidence — 4 representative gaps

• Effect of Magnesium Foliar Fertilization on Hybrid Rice Grown in Lowland Soils of Tarlac (2026) · Agricultural Science · doi

  Farmers growing hybrid rice in lahar-laden soils of Tarlac and similar volcanic ash-affected lowland areas are strongly advised to adopt foliar application of Magnesium Sulfate (MgSO₄) at 75 g/L as their standard Mg fertilization practice. Among all treatments evaluated, MgSO₄ at 75 g/L (T8) produced the highest grain yield of 8.81 t/ha, representing a gain of 2.53 t/ha over the unfertilized control, and delivered the greatest economic returns, with a net income of PhP83,874 and a Return on Investment of 406%. These figures represent a 129-percentage- point advantage in ROI over the control treatment and a 75-percentage-point advantage over the best-performing MgCO₃ treatment at the same concentration. The superiority of MgSO₄ is attributed to the additional availability of Sulfur, a nutrient that is frequently deficient in flooded lowland soils and critical for protein synthesis and chlorophyll function. Applied three times at 25, 40, and 60 days after transplanting, this treatment is practical, cost-effective, and scalable for smallholder rice farmers. Future studies should evaluate this recommendation across multiple cropping seasons and in other lahar-affected municipalities to confirm its robustness and further optimize application timing.

  generalrecommendationsevidence 5/5
  Keywords: mgso treatment farmers rice lahar soils affected lowland application control percentage point advantage growing hybrid
• Effect of Magnesium Foliar Fertilization on Hybrid Rice Grown in Lowland Soils of Tarlac (2026) · Agricultural Science · doi

  The study identifies a research gap in the understanding of the effects of magnesium foliar fertilization on hybrid rice grown in lowland soils of Tarlac. The study notes that the deposition of volcanic materials has altered soil composition and reduced essential nutrient levels, resulting in poor crop growth.

  generalstated research gapevidence 5/5
  Keywords: study identifies research gap understanding effects magnesium foliar
• Foliar Magnesium Application Enhances Fruit External and Interior Quality and Nitrogen Use Efficiency of Tomato (Solanum lycopersicum L.) Simultaneously Under High Nitrogen Supply (2026) · Agronomy · doi

  The effectiveness of foliar magnesium supplementation under magnesium-sufficient soil conditions and increasing nitrogen supply is unclear. There is a need to evaluate the impact of foliar magnesium application on tomato fruit quality and nitrogen use efficiency.

  generalstated research gapevidence 5/5
  Keywords: effectiveness foliar magnesium supplementation magnesium-sufficient soil conditions increasing
• Effects of moderate magnesium application on rice milling quality, nutritional value and eating quality (2025) · Frontiers in Sustainable Food Systems · cited 4× · doi

  Background Magnesium (Mg), an essential secondary macronutrient for plant growth and development, and its dose–response relationships with crop yield and quality remain to be systematically characterized.

  generalabstractevidence 3/5
  Keywords: background magnesium essential secondary macronutrient plant growth development dose response relationships crop yield quality remain

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