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Crop Physiology Lesson: Crop Nutrition and Mineral Nutrients Absorption


Lecture on: 1 December 2025


This lecture is a comprehensive guide to Crop Nutrition and Mineral Nutrient Absorption, foundational topics for Crop Physiology (AGR3301). We cover the classification of nutrients, the criteria for essentiality, and the complex process of nutrient uptake by plant roots.


Essential Plant Nutrients We begin by defining nutrients and establishing the criteria for a chemical element to be considered essential (e.g., its absence prevents the plant from completing its life cycle). A total of 17 elements are essential for higher green plants.


Classification of Essential Plant Nutrients by Amount

Frame-work elements (C, H, O): Obtained from air and water. These three elements are required in large quantities for the production of plant constituents and make up 95 percent of plant biomass.


Macronutrients (6): Required in larger quantities 4, including Primary Nutrients (N, P, K) and Secondary Nutrients (Ca, Mg, S).


Micronutrients (8): Required in relatively minute quantities 7, including Fe, Mn, Zn, B, Cu, Cl, Mo, and Ni.


Keywords: Crop Nutrition, Mineral Nutrients, Macronutrients, Micronutrients, Essential Elements, Root Absorption, Casparian Strip, Mycorrhiza, Apoplast, Symplast, Soil pH, Fertilizer, AGR3301.


Location:

Faculty of Agriculture, Universiti Putra Malaysia

Fakulti Pertanian, Universiti Putra Malaysia, 43000 Seri Kembangan, Selangor

2.983567621706455, 101.73466120334834

Attribution 4.0 International — CC BY 4.0 - Creative Commons


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