Call for papers/Topics Topics of Interest for Submission include, but are Not Limited to: 1. Sustainable Agriculture Sustainable agriculture focuses on long-term food production while minimizing environmental footprint, maintaining economic viability, and ensuring social equity. Independent Core Concepts Agroecology and Ecosystem Services: Understanding farms as ecosystems; promoting biodiversity, natural pest regulation, and pollination. Conservation Tillage and No-Till Farming: Reducing soil disturbance to preserve soil structure, retain moisture, and prevent erosion. Crop Rotation and Diversity: Polyculture, cover cropping, and sequential planting to break pest cycles and naturally replenish soil nutrients. Permaculture and Regenerative Agriculture: Design principles mimicking natural ecosystems to restore degraded land and sequester carbon. Water Harvesting and Efficient Irrigation: Drip irrigation, rainwater harvesting, and scheduling to minimize water wastage and salinization. Interrelated Connections Link to Plant Nutrition: Cover crops (like legumes) naturally fix atmospheric nitrogen, reducing the need for synthetic fertilizers. Link to Soil Pollution: Reduced reliance on chemical pesticides and synthetic fertilizers directly prevents chemical runoff and soil toxicity. 2. Plant Nutrition Plant nutrition involves the study of the essential elements and chemical compounds necessary for plant growth, metabolism, and external supply. Independent Core Concepts Essential Macronutrients: The roles, mobility, and assimilation of Nitrogen (N), Phosphorus (P), Potassium (K), Calcium (Ca), Magnesium (Mg), and Sulfur (S). Essential Micronutrients: The biochemical functions of Iron (Fe), Manganese (Mn), Zinc (Zn), Copper (Cu), Boron (B), Molybdenum (Mo), and Chlorine (Cl). The Rhizosphere and Root Exudates: The zone of soil surrounding plant roots where complex chemical signaling and nutrient uptake occur. Mycorrhizal Associations and Nitrogen Fixation: Symbiotic relationships between plant roots and fungi (AMF) or bacteria (Rhizobium) that enhance nutrient absorption. Nutrient Deficiency and Toxicity Symptoms: Visual and physiological indicators of nutrient imbalances (e.g., chlorosis, necrosis, stunted growth). Interrelated Connections Link to Sustainable Agriculture: Utilizing organic amendments (compost, manure) instead of synthetic inputs to feed the soil microbiome, which in turn feeds the plant. Link to Soil Pollution: Over-application of macronutrients (especially nitrogen and phosphorus) leads to soil acidification, nutrient leaching, and downstream water eutrophication. 3. Soil Pollution Soil pollution refers to the presence of xenobiotic (human-made) chemicals or other alterations in the natural soil environment that adversely affect plant and animal life. Independent Core Concepts Heavy Metal Contamination: Accumulation of toxic metals like Lead (Pb), Cadmium (Cd), Arsenic (As), and Mercury (Hg) from industrial waste and low-grade fertilizers. Agrochemical Pollution: Persistent organic pollutants (POPs) originating from excessive pesticide, herbicide, and fungicide applications. Soil Salinization and Alkalinization: The buildup of salts from poor irrigation practices, destroying soil structure and rendering it toxic to most crops. Microplastics and Emerging Contaminants: The infiltration of synthetic polymers and pharmaceutical residues into agricultural soils via sewage sludge or plastic mulching. Soil Bioremediation and Phytoremediation: Using microbes or hyperaccumulating plants to extract, degrade, or immobilize soil contaminants. Interrelated Connections Link to Plant Nutrition: Heavy metals can mimic essential micronutrients (e.g., Cadmium replacing Zinc), leading to toxic uptake by plants and entry into the human food chain. Link to Sustainable Agriculture: Sustainable practices like biochar application and organic farming act as preventative and remedial measures against soil pollution by binding toxins and restoring soil health. 4. Major Interrelated Subtopics These subtopics sit directly at the intersection of all three fields, representing the modern challenges and solutions in agronomy. Integrated Nutrient Management (INM): A system that combines organic, biological, and chemical inputs to optimize plant nutrition while preserving soil health and preventing pollution. Precision Agriculture and Smart Fertilization: Using IoT sensors, drones, and AI-driven soil mapping to apply the exact amount of nutrients needed, minimizing both agricultural waste and soil/water pollution. The Soil Microbiome as a Buffer: A healthy, sustainably managed soil microbiome enhances plant nutrition through natural cycling, while simultaneously degrading certain organic soil pollutants. Circular Economy in Agriculture: Recycling agricultural and municipal organic waste (after strict screening for pollutants) back into the soil as nutrient-rich compost to achieve long-term agricultural sustainability.