Concept of Natural and Organic Farming Systems in Indian Agriculture

Natural and organic farming represent holistic agricultural paradigms designed to work in complete harmony with natural ecosystems rather than dominating them through synthetic agrochemicals. While modern conventional agriculture relies heavily on fossil-fuel-derived synthetic nitrogenous, phosphatic, and potassic fertilizers, along with broad-spectrum chemical pesticides, natural and organic systems prioritize ecological balance, soil biological vitality, and closed nutrient loops.

• Organic Farming: A production system that sustains the health of soils, ecosystems, and people. It relies on ecological processes, biodiversity, and cycles adapted to local conditions, rather than the use of inputs with adverse effects.
• Natural Farming (Zero Budget Natural Farming / Prakritik Krishi): A chemical-free farming system drawing on traditional Indian agro-ecological practices, famously championed by Subhash Palekar, emphasizing microbial activation through indigenous cow dung and urine.
• Core Objectives: Conservation of natural resources, elimination of chemical residues in the food chain, enhancement of soil organic matter (SOM), and maximization of soil biodiversity including earthworms and beneficial microflora like Azotobacter and Rhizobium species.

According to the International Federation of Organic Agriculture Movements (IFOAM), organic agriculture is founded on four interrelated and indivisible ethical principles which serve as the bedrock for competitive exam questions in UP TGT/PGT Agriculture.

• Principle of Health: Agriculture should sustain and enhance the health of soil, plant, animal, human, and planet as one and indivisible. Healthy soils produce healthy crops that foster health in animals and humans.
• Principle of Ecology: Farming systems should be modeled on living ecological systems, mimicking their cycles and balances. Management must be tailored to local agro-climatic conditions.
• Principle of Fairness: Agriculture should build relationships that ensure fairness with regard to the common environment and life opportunities, providing a good quality of life and food sovereignty for all stakeholders.
• Principle of Care: Management must be precautionary and responsible to protect the health and well-being of current and future generations and the environment.

Natural farming eliminates purchased external inputs, especially chemical fertilizers and synthetic pesticides, substituting them with on-farm biological preparations. Understanding these components is vital for agronomy examinations.

• Jeevamrutha / Jiwamrita: A microbial culture prepared using 200 liters of water, 10 kg local cow dung, 10 liters cow urine, 2 kg jaggery, 2 kg pulse flour (besan), and a handful of live undisturbed forest soil. It multiplies native soil microorganisms exponentially.
• Beejamrutha / Bijamrita: A seed treatment formulation using cow dung, cow urine, water, lime, and forest soil, applied to seeds, tubers, or rhizomes to protect young seedlings from soil-borne and seed-borne fungal pathogens such as Fusarium oxysporum and Rhizoctonia solani.
• Whapasa (Soil Moisture-Air Balance): The condition where soil holds equal proportions of moisture and air, created through mulching (Achhadana) and reduced tillage, drastically reducing irrigation requirements.
• Achhadana (Mulching): Covering topsoil with crop residues, live cover crops, or fallen leaves to suppress weed emergence, conserve soil moisture, regulate soil temperature, and prevent soil erosion.

Maintaining and building soil organic matter (SOM) is the central tenet of both natural and organic nutrient management. Unlike conventional agriculture which applies immediate soluble ionic nutrients, organic systems rely on slow-release organic complexes mediated by soil macro- and micro-fauna.

• Composting and Vermicomposting: Aerobic decomposition of organic waste using earthworms such as Eisenia fetida transforms crop residues and animal manure into nutrient-rich vermicompost containing plant-available nitrogen, phosphorus, and potassium (NPK), alongside humic substances.
• Green Manuring and Cover Cropping: Incorporation of fast-growing leguminous green manure crops such as sunnhemp (Crotalaria juncea), dhaincha (Sesbania aculeata), and cluster bean (Cyamopsis tetragonoloba) in situ to fix atmospheric nitrogen via symbiotic Rhizobium bacteria and add organic carbon.
• Biofertilizers: Application of specialized microbial inoculants including nitrogen fixers (Azotobacter chroococcum, Azospirillum brasilense), phosphate solubilizing bacteria (PSB like Bacillus megaterium), and vesicular-arbuscular mycorrhizal (VAM) fungi to enhance nutrient availability.

Without synthetic chemical pesticides, natural and organic farming systems employ a multilayered prophylactic and therapeutic defense strategy to keep pest populations below Economic Injury Levels (EIL).

• Botanical Pesticides: Utilization of plant-derived secondary metabolites, most notably Azadirachtin extracted from neem (Azadirachta indica) seeds, pongamia oil, and garlic-chili extracts acting as repellents, anti-feedants, and insect growth regulators.
• Biopesticides: Application of entomopathogenic microorganisms such as the bacterium Bacillus thuringiensis (Bt), nucleopolyhedrovirus (NPV) for lepidopteran pests like Helicoverpa armigera, and entomopathogenic fungi like Beauveria bassiana and Metarhizium anisopliae.
• Cultural and Mechanical Controls: Crop rotation, trap cropping (e.g., marigold with tomato for nematode and fruit borer management), summer ploughing to expose pupae, yellow sticky traps, and hand-picking of egg masses.